Merge "mvcc: Fix incorrect schema version being used to copy the mutation when applying (#5099)" from Tomasz

"
Currently affects only counter tables.

Introduced in 27014a2.

mutation_partition(s, mp) is incorrect because it uses s to interpret
mp, while it should use mp_schema.

We may hit this if the current node has a newer schema than the
incoming mutation. This can happen during table schema altering when we receive the
mutation from a node which hasn't processed the schema change yet.

This is undefined behavior in general. If the alter was adding or
removing columns, this may result in corruption of the write where
values of one column are inserted into a different column.

Fixes #5095.
"

* 'fix-schema-alter-counter-tables' of https://github.com/tgrabiec/scylla:
  mvcc: Fix incorrect schema verison being used to copy the mutation when applying
  mutation_partition: Track and validate schema version in debug builds
  tests: Use the correct schema to access mutation_partition

(cherry picked from commit 83bc59a89f)

.dockerignore

@@ -1,4 +0,0 @@
-.git
-build
-seastar/build
-testlog

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,4 @@
+Scylla doesn't use pull-requests, please send a patch to the [mailing list](mailto:scylladb-dev@googlegroups.com) instead.
+See our [contributing guidelines](../CONTRIBUTING.md) and our [Scylla development guidelines](../HACKING.md) for more information.
+
+If you have any questions please don't hesitate to send a mail to the [dev list](mailto:scylladb-dev@googlegroups.com).

.gitignore

@@ -19,8 +19,3 @@ CMakeLists.txt.user
 __pycache__CMakeLists.txt.user
 .gdbinit
 resources
-.pytest_cache
-/expressions.tokens
-tags
-testlog/*
-test/*/*.reject

.gitmodules

@@ -6,15 +6,9 @@
 	path = swagger-ui
 	url = ../scylla-swagger-ui
 	ignore = dirty
+[submodule "dist/ami/files/scylla-ami"]
+	path = dist/ami/files/scylla-ami
+	url = ../scylla-ami
 [submodule "xxHash"]
 	path = xxHash
 	url = ../xxHash
-[submodule "libdeflate"]
-	path = libdeflate
-	url = ../libdeflate
-[submodule "zstd"]
-	path = zstd
-	url = ../zstd
-[submodule "abseil"]
-	path = abseil
-	url = ../abseil-cpp

CMakeLists.txt

@@ -5,25 +5,13 @@
 cmake_minimum_required(VERSION 3.7)
 project(scylla)
 
-if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
-  message(STATUS "Setting build type to 'Release' as none was specified.")
-  set(CMAKE_BUILD_TYPE "Release" CACHE
-      STRING "Choose the type of build." FORCE)
-  # Set the possible values of build type for cmake-gui
-  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
-    "Debug" "Release" "Dev" "Sanitize")
-endif()
-
-if(CMAKE_BUILD_TYPE)
-    string(TOLOWER "${CMAKE_BUILD_TYPE}" BUILD_TYPE)
-else()
-    set(BUILD_TYPE "release")
-endif()
-
 if (NOT DEFINED FOR_IDE AND NOT DEFINED ENV{FOR_IDE} AND NOT DEFINED ENV{CLION_IDE})
     message(FATAL_ERROR "This CMakeLists.txt file is only valid for use in IDEs, please define FOR_IDE to acknowledge this.")
 endif()
 
+# Default value. A more accurate list is populated through `pkg-config` below if `seastar.pc` is available.
+set(SEASTAR_INCLUDE_DIRS "seastar")
+
 # These paths are always available, since they're included in the repository. Additional DPDK headers are placed while
 # Seastar is built, and are captured in `SEASTAR_INCLUDE_DIRS` through parsing the Seastar pkg-config file (below).
 set(SEASTAR_DPDK_INCLUDE_DIRS
@@ -34,14 +22,9 @@ set(SEASTAR_DPDK_INCLUDE_DIRS
 
 find_package(PkgConfig REQUIRED)
 
-set(ENV{PKG_CONFIG_PATH} "${CMAKE_SOURCE_DIR}/build/${BUILD_TYPE}/seastar:$ENV{PKG_CONFIG_PATH}")
+set(ENV{PKG_CONFIG_PATH} "${CMAKE_SOURCE_DIR}/seastar/build/release:$ENV{PKG_CONFIG_PATH}")
 pkg_check_modules(SEASTAR seastar)
 
-if(NOT SEASTAR_INCLUDE_DIRS)
-    # Default value. A more accurate list is populated through `pkg-config` below if `seastar.pc` is available.
-    set(SEASTAR_INCLUDE_DIRS "seastar/include")
-endif()
-
 find_package(Boost COMPONENTS filesystem program_options system thread)
 
 ##
@@ -87,7 +70,7 @@ scan_scylla_source_directories(
           seastar/json
           seastar/net
           seastar/rpc
-          seastar/testing
+          seastar/tests
           seastar/util)
 
 scan_scylla_source_directories(
@@ -114,7 +97,7 @@ scan_scylla_source_directories(
           service
           sstables
           streaming
-          test
+          tests
           thrift
           tracing
           transport
@@ -123,7 +106,7 @@ scan_scylla_source_directories(
 scan_scylla_source_directories(
         VAR SCYLLA_GEN_SOURCE_FILES
         RECURSIVE
-        PATHS build/${BUILD_TYPE}/gen)
+        PATHS build/release/gen)
 
 set(SCYLLA_SOURCE_FILES
         ${SCYLLA_ROOT_SOURCE_FILES}
@@ -155,5 +138,4 @@ target_include_directories(scylla PUBLIC
         ${SEASTAR_INCLUDE_DIRS}
         ${Boost_INCLUDE_DIRS}
         xxhash
-        libdeflate
-        build/${BUILD_TYPE}/gen)
+        build/release/gen)

CONTRIBUTING.md

@@ -1,6 +1,6 @@
 # Asking questions or requesting help
 
-Use the [ScyllaDB user mailing list](https://groups.google.com/forum/#!forum/scylladb-users) or the [Slack workspace](http://slack.scylladb.com) for general questions and help.
+Use the [ScyllaDB user mailing list](https://groups.google.com/forum/#!forum/scylladb-users) for general questions and help.
 
 # Reporting an issue
 

HACKING.md

@@ -20,22 +20,11 @@ $ git submodule update --init --recursive
 
 Scylla depends on the system package manager for its development dependencies.
 
-Running `./install-dependencies.sh` (as root) installs the appropriate packages based on your Linux distribution.
-
-On Ubuntu and Debian based Linux distributions, some packages
-required to build Scylla are missing in the official upstream:
-
-- libthrift-dev and libthrift
-- antlr3-c++-dev
-
-Try running ```sudo ./scripts/scylla_current_repo``` to add Scylla upstream,
-and get the missing packages from it.
+Running `./install_dependencies.sh` (as root) installs the appropriate packages based on your Linux distribution.
 
 ### Build system
 
-**Note**: Compiling Scylla requires, conservatively, 2 GB of memory per native
-thread, and up to 3 GB per native thread while linking. GCC >= 8.1.1. is
-required.
+**Note**: Compiling Scylla requires, conservatively, 2 GB of memory per native thread, and up to 3 GB per native thread while linking.
 
 Scylla is built with [Ninja](https://ninja-build.org/), a low-level rule-based system. A Python script, `configure.py`, generates a Ninja file (`build.ninja`) based on configuration options.
 
@@ -54,9 +43,11 @@ The full suite of options for project configuration is available via
 $ ./configure.py --help
 ```
 
-The most important option is:
+The most important options are:
 
-- `--enable-dpdk`: [DPDK](http://dpdk.org/) is a set of libraries and drivers for fast packet processing. During development, it's not necessary to enable support even if it is supported by your platform.
+- `--mode={release,debug,all}`: Debug mode enables [AddressSanitizer](https://github.com/google/sanitizers/wiki/AddressSanitizer) and allows for debugging with tools like GDB. Debugging builds are generally slower and generate much larger object files than release builds.
+
+- `--{enable,disable}-dpdk`: [DPDK](http://dpdk.org/) is a set of libraries and drivers for fast packet processing. During development, it's not necessary to enable support even if it is supported by your platform.
 
 Source files and build targets are tracked manually in `configure.py`, so the script needs to be updated when new files or targets are added or removed.
 
@@ -64,30 +55,6 @@ To save time -- for instance, to avoid compiling all unit tests -- you can also
 
 ```bash
 $ ninja-build build/release/tests/schema_change_test
-$ ninja-build build/release/service/storage_proxy.o
-```
-
-You can also specify a single mode. For example
-
-```bash
-$ ninja-build release
-```
-
-Will build everytihng in release mode. The valid modes are
-
-* Debug: Enables [AddressSanitizer](https://github.com/google/sanitizers/wiki/AddressSanitizer)
-  and other sanity checks. It has no optimizations, which allows for debugging with tools like
-  GDB. Debugging builds are generally slower and generate much larger object files than release builds.
-* Release: Fewer checks and more optimizations. It still has debug info.
-* Dev: No optimizations or debug info. The objective is to compile and link as fast as possible.
-  This is useful for the first iterations of a patch.
-
-
-Note that by default unit tests binaries are stripped so they can't be used with gdb or seastar-addr2line.
-To include debug information in the unit test binary, build the test binary with a `_g` suffix. For example,
-
-```bash
-$ ninja-build build/release/tests/schema_change_test_g
 ```
 
 ### Unit testing
@@ -116,7 +83,7 @@ The `-c1 -m1G` arguments limit this Seastar-based test to a single system thread
 
 ### Preparing patches
 
-All changes to Scylla are submitted as patches to the public [mailing list](mailto:scylladb-dev@googlegroups.com). Once a patch is approved by one of the maintainers of the project, it is committed to the maintainers' copy of the repository at https://github.com/scylladb/scylla.
+All changes to Scylla are submitted as patches to the public mailing list. Once a patch is approved by one of the maintainers of the project, it is committed to the maintainers' copy of the repository at https://github.com/scylladb/scylla.
 
 Detailed instructions for formatting patches for the mailing list and advice on preparing good patches are available at the [ScyllaDB website](http://docs.scylladb.com/contribute/). There are also some guidelines that can help you make the patch review process smoother:
 
@@ -141,12 +108,10 @@ In v3:
 "Tests: unit ({mode}), dtest ({smp})"
 ```
 
-The usual is "Tests: unit (dev)", although running debug tests is encouraged.
+The usual is "Tests: unit (release)", although running debug tests is encouraged.
 
 5. When answering review comments, prefer inline quotes as they make it easier to track the conversation across multiple e-mails.
 
-6. The Linux kernel's [Submitting Patches](https://www.kernel.org/doc/html/v4.19/process/submitting-patches.html) document offers excellent advice on how to prepare patches and patchsets for review. Since the Scylla development process is derived from the kernel's, almost all of the advice there is directly applicable.
-
 ### Finding a person to review and merge your patches
 
 You can use the `scripts/find-maintainer` script to find a subsystem maintainer and/or reviewer for your patches. The script accepts a filename in the git source tree as an argument and outputs a list of subsystems the file belongs to and their respective maintainers and reviewers. For example, if you changed the `cql3/statements/create_view_statement.hh` file, run the script as follows:
@@ -199,29 +164,6 @@ On a development machine, one might run Scylla as
 $ SCYLLA_HOME=$HOME/scylla build/release/scylla --overprovisioned --developer-mode=yes
 ```
 
-To interact with scylla it is recommended to build our versions of
-cqlsh and nodetool. They are available at
-https://github.com/scylladb/scylla-tools-java and can be built with
-
-```bash
-$ sudo ./install-dependencies.sh
-$ ant jar
-```
-
-cqlsh should work out of the box, but nodetool depends on a running
-scylla-jmx (https://github.com/scylladb/scylla-jmx). It can be build
-with
-
-```bash
-$ mvn package
-```
-
-and must be started with
-
-```bash
-$ ./scripts/scylla-jmx
-```
-
 ### Branches and tags
 
 Multiple release branches are maintained on the Git repository at https://github.com/scylladb/scylla. Release 1.5, for instance, is tracked on the `branch-1.5` branch.
@@ -312,7 +254,7 @@ In this example, `10.0.0.2` will be sent up to 16 jobs and the local machine wil
 
 When a compilation is in progress, the status of jobs on all remote machines can be visualized in the terminal with `distccmon-text` or graphically as a GTK application with `distccmon-gnome`.
 
-One thing to keep in mind is that linking object files happens on the coordinating machine, which can be a bottleneck. See the next sections speeding up this process.
+One thing to keep in mind is that linking object files happens on the coordinating machine, which can be a bottleneck. See the next section speeding up this process.
 
 ### Using the `gold` linker
 
@@ -322,24 +264,6 @@ Linking Scylla can be slow. The gold linker can replace GNU ld and often speeds
 $ sudo alternatives --config ld
 ```
 
-### Using split dwarf
-
-With debug info enabled, most of the link time is spent copying and
-relocating it. It is possible to leave most of the debug info out of
-the link by writing it to a side .dwo file. This is done by passing
-`-gsplit-dwarf` to gcc.
-
-Unfortunately just `-gsplit-dwarf` would slow down `gdb` startup. To
-avoid that the gold linker can be told to create an index with
-`--gdb-index`.
-
-More info at https://gcc.gnu.org/wiki/DebugFission.
-
-Both options can be enable by passing `--split-dwarf` to configure.py.
-
-Note that distcc is *not* compatible with it, but icecream
-(https://github.com/icecc/icecream) is.
-
 ### Testing changes in Seastar with Scylla
 
 Sometimes Scylla development is closely tied with a feature being developed in Seastar. It can be useful to compile Scylla with a particular check-out of Seastar.
@@ -353,8 +277,3 @@ $ git remote add local /home/tsmith/src/seastar
 $ git remote update
 $ git checkout -t local/my_local_seastar_branch
 ```
-
-### Core dump debugging
-
-Slides:
-2018.11.20: https://www.slideshare.net/tomekgrabiec/scylla-core-dump-debugging-tools

MAINTAINERS

@@ -5,6 +5,8 @@ F: Filename, directory, or pattern for the subsystem
 ---
 
 AUTH
+M: Paweł Dziepak <pdziepak@scylladb.com>
+M: Duarte Nunes <duarte@scylladb.com>
 R: Calle Wilund <calle@scylladb.com>
 R: Vlad Zolotarov <vladz@scylladb.com>
 R: Jesse Haber-Kucharsky <jhaberku@scylladb.com>
@@ -12,17 +14,22 @@ F: auth/*
 
 CACHE
 M: Tomasz Grabiec <tgrabiec@scylladb.com>
+M: Paweł Dziepak <pdziepak@scylladb.com>
 R: Piotr Jastrzebski <piotr@scylladb.com>
 F: row_cache*
 F: *mutation*
 F: tests/mvcc*
 
 COMMITLOG / BATCHLOGa
+M: Paweł Dziepak <pdziepak@scylladb.com>
+M: Duarte Nunes <duarte@scylladb.com>
 R: Calle Wilund <calle@scylladb.com>
 F: db/commitlog/*
 F: db/batch*
 
 COORDINATOR
+M: Paweł Dziepak <pdziepak@scylladb.com>
+M: Duarte Nunes <duarte@scylladb.com>
 R: Gleb Natapov <gleb@scylladb.com>
 F: service/storage_proxy*
 
@@ -42,10 +49,12 @@ M: Pekka Enberg <penberg@scylladb.com>
 F: cql3/*
 
 COUNTERS
+M: Paweł Dziepak <pdziepak@scylladb.com>
 F: counters*
 F: tests/counter_test*
 
 GOSSIP
+M: Duarte Nunes <duarte@scylladb.com>
 M: Tomasz Grabiec <tgrabiec@scylladb.com>
 R: Asias He <asias@scylladb.com>
 F: gms/*
@@ -56,11 +65,14 @@ F: dist/docker/*
 
 LSA
 M: Tomasz Grabiec <tgrabiec@scylladb.com>
+M: Paweł Dziepak <pdziepak@scylladb.com>
 F: utils/logalloc*
 
 MATERIALIZED VIEWS
+M: Duarte Nunes <duarte@scylladb.com>
 M: Pekka Enberg <penberg@scylladb.com>
-M: Nadav Har'El <nyh@scylladb.com>
+R: Nadav Har'El <nyh@scylladb.com>
+R: Duarte Nunes <duarte@scylladb.com>
 F: db/view/*
 F: cql3/statements/*view*
 
@@ -70,12 +82,14 @@ F: dist/*
 
 REPAIR
 M: Tomasz Grabiec <tgrabiec@scylladb.com>
+M: Duarte Nunes <duarte@scylladb.com>
 R: Asias He <asias@scylladb.com>
 R: Nadav Har'El <nyh@scylladb.com>
 F: repair/*
 
 SCHEMA MANAGEMENT
 M: Tomasz Grabiec <tgrabiec@scylladb.com>
+M: Duarte Nunes <duarte@scylladb.com>
 M: Pekka Enberg <penberg@scylladb.com>
 F: db/schema_tables*
 F: db/legacy_schema_migrator*
@@ -84,13 +98,15 @@ F: schema*
 
 SECONDARY INDEXES
 M: Pekka Enberg <penberg@scylladb.com>
-M: Nadav Har'El <nyh@scylladb.com>
+M: Duarte Nunes <duarte@scylladb.com>
+R: Nadav Har'El <nyh@scylladb.com>
 R: Pekka Enberg <penberg@scylladb.com>
 F: db/index/*
 F: cql3/statements/*index*
 
 SSTABLES
 M: Tomasz Grabiec <tgrabiec@scylladb.com>
+M: Duarte Nunes <duarte@scylladb.com>
 R: Raphael S. Carvalho <raphaelsc@scylladb.com>
 R: Glauber Costa <glauber@scylladb.com>
 R: Nadav Har'El <nyh@scylladb.com>
@@ -98,17 +114,18 @@ F: sstables/*
 
 STREAMING
 M: Tomasz Grabiec <tgrabiec@scylladb.com>
+M: Duarte Nunes <duarte@scylladb.com>
 R: Asias He <asias@scylladb.com>
 F: streaming/*
 F: service/storage_service.*
 
-ALTERNATOR
-M: Nadav Har'El <nyh@scylladb.com>
-F: alternator/*
-F: alternator-test/*
+THRIFT TRANSPORT LAYER
+M: Duarte Nunes <duarte@scylladb.com>
+F: thrift/*
 
 THE REST
 M: Avi Kivity <avi@scylladb.com>
+M: Paweł Dziepak <pdziepak@scylladb.com>
+M: Duarte Nunes <duarte@scylladb.com>
 M: Tomasz Grabiec <tgrabiec@scylladb.com>
-M: Nadav Har'El <nyh@scylladb.com>
 F: *

README-DPDK.md

@@ -0,0 +1,29 @@
+Seastar and DPDK
+================
+
+Seastar uses the Data Plane Development Kit to drive NIC hardware directly.  This
+provides an enormous performance boost.
+
+To enable DPDK, specify `--enable-dpdk` to `./configure.py`, and `--dpdk-pmd` as a
+run-time parameter.  This will use the DPDK package provided as a git submodule with the
+seastar sources.
+
+To use your own self-compiled DPDK package, follow this procedure:
+
+1. Setup host to compile DPDK:
+   - Ubuntu 
+     `sudo apt-get install -y build-essential linux-image-extra-$(uname -r)` 
+2. Prepare a DPDK SDK:
+   - Download the latest DPDK release: `wget http://dpdk.org/browse/dpdk/snapshot/dpdk-1.8.0.tar.gz`
+   - Untar it.
+   - Edit config/common_linuxapp: set CONFIG_RTE_MBUF_REFCNT and CONFIG_RTE_LIBRTE_KNI to 'n'.
+   - For DPDK 1.7.x: edit config/common_linuxapp: 
+     - Set CONFIG_RTE_LIBRTE_PMD_BOND  to 'n'.
+     - Set CONFIG_RTE_MBUF_SCATTER_GATHER to 'n'.
+     - Set CONFIG_RTE_LIBRTE_IP_FRAG to 'n'.
+   - Start the tools/setup.sh script as root.
+   - Compile a linuxapp target (option 9).
+   - Install IGB_UIO module (option 11).
+   - Bind some physical port to IGB_UIO (option 17).
+   - Configure hugepage mappings (option 14/15).
+3. Run a configure.py: `./configure.py --dpdk-target <Path to untared dpdk-1.8.0 above>/x86_64-native-linuxapp-gcc`.

README.md

@@ -2,23 +2,17 @@
 
 ## Quick-start
 
-To get the build going quickly, Scylla offers a [frozen toolchain](tools/toolchain/README.md)
-which would build and run Scylla using a pre-configured Docker image.
-Using the frozen toolchain will also isolate all of the installed
-dependencies in a Docker container.
-Assuming you have met the toolchain prerequisites, which is running
-Docker in user mode, building and running is as easy as:
-
 ```bash
-$ ./tools/toolchain/dbuild ./configure.py
-$ ./tools/toolchain/dbuild ninja build/release/scylla
-$ ./tools/toolchain/dbuild ./build/release/scylla --developer-mode 1
- ```
+$ git submodule update --init --recursive
+$ sudo ./install-dependencies.sh
+$ ./configure.py --mode=release
+$ ninja-build -j4 # Assuming 4 system threads.
+$ ./build/release/scylla
+$ # Rejoice!
+```
 
 Please see [HACKING.md](HACKING.md) for detailed information on building and developing Scylla.
 
-**Note**: GCC >= 8.1.1 is required to compile Scylla.
-
 ## Running Scylla
 
 * Run Scylla
@@ -27,10 +21,10 @@ Please see [HACKING.md](HACKING.md) for detailed information on building and dev
 
 ```
 
-* run Scylla with one CPU and ./tmp as work directory
+* run Scylla with one CPU and ./tmp as data directory
 
 ```
-./build/release/scylla --workdir tmp --smp 1
+./build/release/scylla --datadir tmp --commitlog-directory tmp --smp 1
 ```
 
 * For more run options:
@@ -38,34 +32,31 @@ Please see [HACKING.md](HACKING.md) for detailed information on building and dev
 ./build/release/scylla --help
 ```
 
-## Testing
+## Building Fedora RPM
 
-See [test.py manual](docs/testing.md).
+As a pre-requisite, you need to install [Mock](https://fedoraproject.org/wiki/Mock) on your machine:
 
-## Scylla APIs and compatibility
-By default, Scylla is compatible with Apache Cassandra and its APIs - CQL and
-Thrift. There is also experimental support for the API of Amazon DynamoDB,
-but being experimental it needs to be explicitly enabled to be used. For more
-information on how to enable the experimental DynamoDB compatibility in Scylla,
-and the current limitations of this feature, see
-[Alternator](docs/alternator/alternator.md) and
-[Getting started with Alternator](docs/alternator/getting-started.md).
+```
+# Install mock:
+sudo yum install mock
 
-## Documentation
+# Add user to the "mock" group:
+usermod -a -G mock $USER && newgrp mock
+```
 
-Documentation can be found in [./docs](./docs) and on the
-[wiki](https://github.com/scylladb/scylla/wiki). There is currently no clear
-definition of what goes where, so when looking for something be sure to check
-both.
-Seastar documentation can be found [here](http://docs.seastar.io/master/index.html).
-User documentation can be found [here](https://docs.scylladb.com/).
+Then, to build an RPM, run:
 
-## Training 
+```
+./dist/redhat/build_rpm.sh
+```
 
-Training material and online courses can be found at [Scylla University](https://university.scylladb.com/). 
-The courses are free, self-paced and include hands-on examples. They cover a variety of topics including Scylla data modeling, 
-administration, architecture, basic NoSQL concepts, using drivers for application development, Scylla setup, failover, compactions, 
-multi-datacenters and how Scylla integrates with third-party applications.
+The built RPM is stored in ``/var/lib/mock/<configuration>/result`` directory.
+For example, on Fedora 21 mock reports the following:
+
+```
+INFO: Done(scylla-server-0.00-1.fc21.src.rpm) Config(default) 20 minutes 7 seconds
+INFO: Results and/or logs in: /var/lib/mock/fedora-21-x86_64/result
+```
 
 ## Building Fedora-based Docker image
 
@@ -84,5 +75,4 @@ docker run -p $(hostname -i):9042:9042 -i -t <image name>
 
 ## Contributing to Scylla
 
-[Hacking howto](HACKING.md)
 [Guidelines for contributing](CONTRIBUTING.md)

SCYLLA-VERSION-GEN

@@ -1,7 +1,6 @@
 #!/bin/sh
 
-PRODUCT=scylla
-VERSION=4.0.11
+VERSION=2.3.6
 
 if test -f version
 then
@@ -19,16 +18,7 @@ else
 	SCYLLA_RELEASE=$SCYLLA_BUILD.$DATE.$GIT_COMMIT
 fi
 
-if [ -f build/SCYLLA-RELEASE-FILE ]; then
-	RELEASE_FILE=$(cat build/SCYLLA-RELEASE-FILE)
-	GIT_COMMIT_FILE=$(cat build/SCYLLA-RELEASE-FILE |cut -d . -f 3)
-	if [ "$GIT_COMMIT" = "$GIT_COMMIT_FILE" ]; then
-		exit 0
-	fi
-fi
-
 echo "$SCYLLA_VERSION-$SCYLLA_RELEASE"
 mkdir -p build
 echo "$SCYLLA_VERSION" > build/SCYLLA-VERSION-FILE
 echo "$SCYLLA_RELEASE" > build/SCYLLA-RELEASE-FILE
-echo "$PRODUCT" > build/SCYLLA-PRODUCT-FILE

alternator/auth.cc

@@ -1,147 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "alternator/error.hh"
-#include "log.hh"
-#include <string>
-#include <string_view>
-#include <gnutls/crypto.h>
-#include <seastar/util/defer.hh>
-#include "hashers.hh"
-#include "bytes.hh"
-#include "alternator/auth.hh"
-#include <fmt/format.h>
-#include "auth/common.hh"
-#include "auth/password_authenticator.hh"
-#include "auth/roles-metadata.hh"
-#include "cql3/query_processor.hh"
-#include "cql3/untyped_result_set.hh"
-
-namespace alternator {
-
-static logging::logger alogger("alternator-auth");
-
-static hmac_sha256_digest hmac_sha256(std::string_view key, std::string_view msg) {
-    hmac_sha256_digest digest;
-    int ret = gnutls_hmac_fast(GNUTLS_MAC_SHA256, key.data(), key.size(), msg.data(), msg.size(), digest.data());
-    if (ret) {
-        throw std::runtime_error(fmt::format("Computing HMAC failed ({}): {}", ret, gnutls_strerror(ret)));
-    }
-    return digest;
-}
-
-static hmac_sha256_digest get_signature_key(std::string_view key, std::string_view date_stamp, std::string_view region_name, std::string_view service_name) {
-    auto date = hmac_sha256("AWS4" + std::string(key), date_stamp);
-    auto region = hmac_sha256(std::string_view(date.data(), date.size()), region_name);
-    auto service = hmac_sha256(std::string_view(region.data(), region.size()), service_name);
-    auto signing = hmac_sha256(std::string_view(service.data(), service.size()), "aws4_request");
-    return signing;
-}
-
-static std::string apply_sha256(std::string_view msg) {
-    sha256_hasher hasher;
-    hasher.update(msg.data(), msg.size());
-    return to_hex(hasher.finalize());
-}
-
-static std::string format_time_point(db_clock::time_point tp) {
-    time_t time_point_repr = db_clock::to_time_t(tp);
-    std::string time_point_str;
-    time_point_str.resize(17);
-    ::tm time_buf;
-    // strftime prints the terminating null character as well
-    std::strftime(time_point_str.data(), time_point_str.size(), "%Y%m%dT%H%M%SZ", ::gmtime_r(&time_point_repr, &time_buf));
-    time_point_str.resize(16);
-    return time_point_str;
-}
-
-void check_expiry(std::string_view signature_date) {
-    //FIXME: The default 15min can be changed with X-Amz-Expires header - we should honor it
-    std::string expiration_str = format_time_point(db_clock::now() - 15min);
-    std::string validity_str = format_time_point(db_clock::now() + 15min);
-    if (signature_date < expiration_str) {
-        throw api_error("InvalidSignatureException",
-                fmt::format("Signature expired: {} is now earlier than {} (current time - 15 min.)",
-                signature_date, expiration_str));
-    }
-    if (signature_date > validity_str) {
-        throw api_error("InvalidSignatureException",
-                fmt::format("Signature not yet current: {} is still later than {} (current time + 15 min.)",
-                signature_date, validity_str));
-    }
-}
-
-std::string get_signature(std::string_view access_key_id, std::string_view secret_access_key, std::string_view host, std::string_view method,
-        std::string_view orig_datestamp, std::string_view signed_headers_str, const std::map<std::string_view, std::string_view>& signed_headers_map,
-        std::string_view body_content, std::string_view region, std::string_view service, std::string_view query_string) {
-    auto amz_date_it = signed_headers_map.find("x-amz-date");
-    if (amz_date_it == signed_headers_map.end()) {
-        throw api_error("InvalidSignatureException", "X-Amz-Date header is mandatory for signature verification");
-    }
-    std::string_view amz_date = amz_date_it->second;
-    check_expiry(amz_date);
-    std::string_view datestamp = amz_date.substr(0, 8);
-    if (datestamp != orig_datestamp) {
-        throw api_error("InvalidSignatureException",
-                format("X-Amz-Date date does not match the provided datestamp. Expected {}, got {}",
-                        orig_datestamp, datestamp));
-    }
-    std::string_view canonical_uri = "/";
-
-    std::stringstream canonical_headers;
-    for (const auto& header : signed_headers_map) {
-        canonical_headers << fmt::format("{}:{}", header.first, header.second) << '\n';
-    }
-
-    std::string payload_hash = apply_sha256(body_content);
-    std::string canonical_request = fmt::format("{}\n{}\n{}\n{}\n{}\n{}", method, canonical_uri, query_string, canonical_headers.str(), signed_headers_str, payload_hash);
-
-    std::string_view algorithm = "AWS4-HMAC-SHA256";
-    std::string credential_scope = fmt::format("{}/{}/{}/aws4_request", datestamp, region, service);
-    std::string string_to_sign = fmt::format("{}\n{}\n{}\n{}", algorithm, amz_date, credential_scope,  apply_sha256(canonical_request));
-
-    hmac_sha256_digest signing_key = get_signature_key(secret_access_key, datestamp, region, service);
-    hmac_sha256_digest signature = hmac_sha256(std::string_view(signing_key.data(), signing_key.size()), string_to_sign);
-
-    return to_hex(bytes_view(reinterpret_cast<const int8_t*>(signature.data()), signature.size()));
-}
-
-future<std::string> get_key_from_roles(cql3::query_processor& qp, std::string username) {
-    static const sstring query = format("SELECT salted_hash FROM {} WHERE {} = ?",
-            auth::meta::roles_table::qualified_name(), auth::meta::roles_table::role_col_name);
-
-    auto cl = auth::password_authenticator::consistency_for_user(username);
-    auto timeout = auth::internal_distributed_timeout_config();
-    return qp.execute_internal(query, cl, timeout, {sstring(username)}, true).then_wrapped([username = std::move(username)] (future<::shared_ptr<cql3::untyped_result_set>> f) {
-        auto res = f.get0();
-        auto salted_hash = std::optional<sstring>();
-        if (res->empty()) {
-            throw api_error("UnrecognizedClientException", fmt::format("User not found: {}", username));
-        }
-        salted_hash = res->one().get_opt<sstring>("salted_hash");
-        if (!salted_hash) {
-            throw api_error("UnrecognizedClientException", fmt::format("No password found for user: {}", username));
-        }
-        return make_ready_future<std::string>(*salted_hash);
-    });
-}
-
-}

alternator/auth.hh

@@ -1,46 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-#include <string>
-#include <string_view>
-#include <array>
-#include "gc_clock.hh"
-#include "utils/loading_cache.hh"
-
-namespace cql3 {
-class query_processor;
-}
-
-namespace alternator {
-
-using hmac_sha256_digest = std::array<char, 32>;
-
-using key_cache = utils::loading_cache<std::string, std::string>;
-
-std::string get_signature(std::string_view access_key_id, std::string_view secret_access_key, std::string_view host, std::string_view method,
-        std::string_view orig_datestamp, std::string_view signed_headers_str, const std::map<std::string_view, std::string_view>& signed_headers_map,
-        std::string_view body_content, std::string_view region, std::string_view service, std::string_view query_string);
-
-future<std::string> get_key_from_roles(cql3::query_processor& qp, std::string username);
-
-}

alternator/base64.cc

@@ -1,111 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-// The DynamoAPI dictates that "binary" (a.k.a. "bytes" or "blob") values
-// be encoded in the JSON API as base64-encoded strings. This is code to
-// convert byte arrays to base64-encoded strings, and back.
-
-#include "base64.hh"
-
-#include <ctype.h>
-
-
-// Arrays for quickly converting to and from an integer between 0 and 63,
-// and the character used in base64 encoding to represent it.
-static class base64_chars {
-public:
-    static constexpr const char* to =
-            "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-    int8_t from[255];
-    base64_chars() {
-        static_assert(strlen(to) == 64);
-        for (int i = 0; i < 255; i++) {
-            from[i] = 255; // signal invalid character
-        }
-        for (int i = 0; i < 64; i++) {
-            from[(unsigned) to[i]] = i;
-        }
-    }
-} base64_chars;
-
-std::string base64_encode(bytes_view in) {
-    std::string ret;
-    ret.reserve(((4 * in.size() / 3) + 3) & ~3);
-    int i = 0;
-    unsigned char chunk3[3]; // chunk of input
-    for (auto byte : in) {
-        chunk3[i++] = byte;
-        if (i == 3) {
-            ret += base64_chars.to[ (chunk3[0] & 0xfc) >> 2 ];
-            ret += base64_chars.to[ ((chunk3[0] & 0x03) << 4) + ((chunk3[1] & 0xf0) >> 4) ];
-            ret += base64_chars.to[ ((chunk3[1] & 0x0f) << 2) + ((chunk3[2] & 0xc0) >> 6) ];
-            ret += base64_chars.to[ chunk3[2] & 0x3f ];
-            i = 0;
-        }
-    }
-    if (i) {
-        // i can be 1 or 2.
-        for(int j = i; j < 3; j++)
-            chunk3[j] = '\0';
-        ret += base64_chars.to[ ( chunk3[0] & 0xfc) >> 2 ];
-        ret += base64_chars.to[ ((chunk3[0] & 0x03) << 4) + ((chunk3[1] & 0xf0) >> 4) ];
-        if (i == 2) {
-            ret += base64_chars.to[ ((chunk3[1] & 0x0f) << 2) + ((chunk3[2] & 0xc0) >> 6) ];
-        } else {
-            ret += '=';
-        }
-        ret += '=';
-    }
-    return ret;
-}
-
-bytes base64_decode(std::string_view in) {
-    int i = 0;
-    int8_t chunk4[4]; // chunk of input, each byte converted to 0..63;
-    std::string ret;
-    ret.reserve(in.size() * 3 / 4);
-    for (unsigned char c : in) {
-        uint8_t dc = base64_chars.from[c];
-        if (dc == 255) {
-            // Any unexpected character, include the "=" character usually
-            // used for padding, signals the end of the decode.
-            break;
-        }
-        chunk4[i++] = dc;
-        if (i == 4) {
-            ret += (chunk4[0] << 2) + ((chunk4[1] & 0x30) >> 4);
-            ret += ((chunk4[1] & 0xf) << 4) + ((chunk4[2] & 0x3c) >> 2);
-            ret += ((chunk4[2] & 0x3) << 6) + chunk4[3];
-            i = 0;
-        }
-    }
-    if (i) {
-        // i can be 2 or 3, meaning 1 or 2 more output characters
-        if (i>=2)
-            ret += (chunk4[0] << 2) + ((chunk4[1] & 0x30) >> 4);
-        if (i==3)
-            ret += ((chunk4[1] & 0xf) << 4) + ((chunk4[2] & 0x3c) >> 2);
-    }
-    // FIXME: This copy is sad. The problem is we need back "bytes"
-    // but "bytes" doesn't have efficient append and std::string.
-    // To fix this we need to use bytes' "uninitialized" feature.
-    return bytes(ret.begin(), ret.end());
-}

alternator/base64.hh

@@ -1,34 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-#include <string_view>
-#include "bytes.hh"
-#include "rjson.hh"
-
-std::string base64_encode(bytes_view);
-
-bytes base64_decode(std::string_view);
-
-inline bytes base64_decode(const rjson::value& v) {
-  return base64_decode(std::string_view(v.GetString(), v.GetStringLength()));
-}

alternator/conditions.cc

@@ -1,682 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <list>
-#include <map>
-#include <string_view>
-#include "alternator/conditions.hh"
-#include "alternator/error.hh"
-#include "cql3/constants.hh"
-#include <unordered_map>
-#include "rjson.hh"
-#include "serialization.hh"
-#include "base64.hh"
-#include <stdexcept>
-#include <boost/algorithm/cxx11/all_of.hpp>
-#include <boost/algorithm/cxx11/any_of.hpp>
-#include "utils/overloaded_functor.hh"
-
-#include "expressions_eval.hh"
-
-namespace alternator {
-
-static logging::logger clogger("alternator-conditions");
-
-comparison_operator_type get_comparison_operator(const rjson::value& comparison_operator) {
-    static std::unordered_map<std::string, comparison_operator_type> ops = {
-            {"EQ", comparison_operator_type::EQ},
-            {"NE", comparison_operator_type::NE},
-            {"LE", comparison_operator_type::LE},
-            {"LT", comparison_operator_type::LT},
-            {"GE", comparison_operator_type::GE},
-            {"GT", comparison_operator_type::GT},
-            {"IN", comparison_operator_type::IN},
-            {"NULL", comparison_operator_type::IS_NULL},
-            {"NOT_NULL", comparison_operator_type::NOT_NULL},
-            {"BETWEEN", comparison_operator_type::BETWEEN},
-            {"BEGINS_WITH", comparison_operator_type::BEGINS_WITH},
-            {"CONTAINS", comparison_operator_type::CONTAINS},
-            {"NOT_CONTAINS", comparison_operator_type::NOT_CONTAINS},
-    };
-    if (!comparison_operator.IsString()) {
-        throw api_error("ValidationException", format("Invalid comparison operator definition {}", rjson::print(comparison_operator)));
-    }
-    std::string op = comparison_operator.GetString();
-    auto it = ops.find(op);
-    if (it == ops.end()) {
-        throw api_error("ValidationException", format("Unsupported comparison operator {}", op));
-    }
-    return it->second;
-}
-
-static ::shared_ptr<cql3::restrictions::single_column_restriction::contains> make_map_element_restriction(const column_definition& cdef, std::string_view key, const rjson::value& value) {
-    bytes raw_key = utf8_type->from_string(sstring_view(key.data(), key.size()));
-    auto key_value = ::make_shared<cql3::constants::value>(cql3::raw_value::make_value(std::move(raw_key)));
-    bytes raw_value = serialize_item(value);
-    auto entry_value = ::make_shared<cql3::constants::value>(cql3::raw_value::make_value(std::move(raw_value)));
-    return make_shared<cql3::restrictions::single_column_restriction::contains>(cdef, std::move(key_value), std::move(entry_value));
-}
-
-static ::shared_ptr<cql3::restrictions::single_column_restriction::EQ> make_key_eq_restriction(const column_definition& cdef, const rjson::value& value) {
-    bytes raw_value = get_key_from_typed_value(value, cdef);
-    auto restriction_value = ::make_shared<cql3::constants::value>(cql3::raw_value::make_value(std::move(raw_value)));
-    return make_shared<cql3::restrictions::single_column_restriction::EQ>(cdef, std::move(restriction_value));
-}
-
-::shared_ptr<cql3::restrictions::statement_restrictions> get_filtering_restrictions(schema_ptr schema, const column_definition& attrs_col, const rjson::value& query_filter) {
-    clogger.trace("Getting filtering restrictions for: {}", rjson::print(query_filter));
-    auto filtering_restrictions = ::make_shared<cql3::restrictions::statement_restrictions>(schema, true);
-    for (auto it = query_filter.MemberBegin(); it != query_filter.MemberEnd(); ++it) {
-        std::string_view column_name(it->name.GetString(), it->name.GetStringLength());
-        const rjson::value& condition = it->value;
-
-        const rjson::value& comp_definition = rjson::get(condition, "ComparisonOperator");
-        const rjson::value& attr_list = rjson::get(condition, "AttributeValueList");
-        comparison_operator_type op = get_comparison_operator(comp_definition);
-
-        if (op != comparison_operator_type::EQ) {
-            throw api_error("ValidationException", "Filtering is currently implemented for EQ operator only");
-        }
-        if (attr_list.Size() != 1) {
-            throw api_error("ValidationException", format("EQ restriction needs exactly 1 attribute value: {}", rjson::print(attr_list)));
-        }
-        if (const column_definition* cdef = schema->get_column_definition(to_bytes(column_name.data()))) {
-            // Primary key restriction
-            filtering_restrictions->add_restriction(make_key_eq_restriction(*cdef, attr_list[0]), false, true);
-        } else {
-            // Regular column restriction
-            filtering_restrictions->add_restriction(make_map_element_restriction(attrs_col, column_name, attr_list[0]), false, true);
-        }
-
-    }
-    return filtering_restrictions;
-}
-
-namespace {
-
-struct size_check {
-    // True iff size passes this check.
-    virtual bool operator()(rapidjson::SizeType size) const = 0;
-    // Check description, such that format("expected array {}", check.what()) is human-readable.
-    virtual sstring what() const = 0;
-};
-
-class exact_size : public size_check {
-    rapidjson::SizeType _expected;
-  public:
-    explicit exact_size(rapidjson::SizeType expected) : _expected(expected) {}
-    bool operator()(rapidjson::SizeType size) const override { return size == _expected; }
-    sstring what() const override { return format("of size {}", _expected); }
-};
-
-struct empty : public size_check {
-    bool operator()(rapidjson::SizeType size) const override { return size < 1; }
-    sstring what() const override { return "to be empty"; }
-};
-
-struct nonempty : public size_check {
-    bool operator()(rapidjson::SizeType size) const override { return size > 0; }
-    sstring what() const override { return "to be non-empty"; }
-};
-
-} // anonymous namespace
-
-// Check that array has the expected number of elements
-static void verify_operand_count(const rjson::value* array, const size_check& expected, const rjson::value& op) {
-    if (!array || !array->IsArray()) {
-        throw api_error("ValidationException", "With ComparisonOperator, AttributeValueList must be given and an array");
-    }
-    if (!expected(array->Size())) {
-        throw api_error("ValidationException",
-                        format("{} operator requires AttributeValueList {}, instead found list size {}",
-                               op, expected.what(), array->Size()));
-    }
-}
-
-struct rjson_engaged_ptr_comp {
-    bool operator()(const rjson::value* p1, const rjson::value* p2) const {
-        return rjson::single_value_comp()(*p1, *p2);
-    }
-};
-
-// It's not enough to compare underlying JSON objects when comparing sets,
-// as internally they're stored in an array, and the order of elements is
-// not important in set equality. See issue #5021
-static bool check_EQ_for_sets(const rjson::value& set1, const rjson::value& set2) {
-    if (set1.Size() != set2.Size()) {
-        return false;
-    }
-    std::set<const rjson::value*, rjson_engaged_ptr_comp> set1_raw;
-    for (auto it = set1.Begin(); it != set1.End(); ++it) {
-        set1_raw.insert(&*it);
-    }
-    for (const auto& a : set2.GetArray()) {
-        if (set1_raw.count(&a) == 0) {
-            return false;
-        }
-    }
-    return true;
-}
-
-// Check if two JSON-encoded values match with the EQ relation
-static bool check_EQ(const rjson::value* v1, const rjson::value& v2) {
-    if (!v1) {
-        return false;
-    }
-    if (v1->IsObject() && v1->MemberCount() == 1 && v2.IsObject() && v2.MemberCount() == 1) {
-        auto it1 = v1->MemberBegin();
-        auto it2 = v2.MemberBegin();
-        if ((it1->name == "SS" && it2->name == "SS") || (it1->name == "NS" && it2->name == "NS") || (it1->name == "BS" && it2->name == "BS")) {
-            return check_EQ_for_sets(it1->value, it2->value);
-        }
-    }
-    return *v1 == v2;
-}
-
-// Check if two JSON-encoded values match with the NE relation
-static bool check_NE(const rjson::value* v1, const rjson::value& v2) {
-    return !v1 || *v1 != v2; // null is unequal to anything.
-}
-
-// Check if two JSON-encoded values match with the BEGINS_WITH relation
-static bool check_BEGINS_WITH(const rjson::value* v1, const rjson::value& v2) {
-    // BEGINS_WITH requires that its single operand (v2) be a string or
-    // binary - otherwise it's a validation error. However, problems with
-    // the stored attribute (v1) will just return false (no match).
-    if (!v2.IsObject() || v2.MemberCount() != 1) {
-        throw api_error("ValidationException", format("BEGINS_WITH operator encountered malformed AttributeValue: {}", v2));
-    }
-    auto it2 = v2.MemberBegin();
-    if (it2->name != "S" && it2->name != "B") {
-        throw api_error("ValidationException", format("BEGINS_WITH operator requires String or Binary in AttributeValue, got {}", it2->name));
-    }
-
-
-    if (!v1 || !v1->IsObject() || v1->MemberCount() != 1) {
-        return false;
-    }
-    auto it1 = v1->MemberBegin();
-    if (it1->name != it2->name) {
-        return false;
-    }
-    if (it2->name == "S") {
-        std::string_view val1(it1->value.GetString(), it1->value.GetStringLength());
-        std::string_view val2(it2->value.GetString(), it2->value.GetStringLength());
-        return val1.substr(0, val2.size()) == val2;
-    } else /* it2->name == "B" */ {
-        // TODO (optimization): Check the begins_with condition directly on
-        // the base64-encoded string, without making a decoded copy.
-        bytes val1 = base64_decode(it1->value);
-        bytes val2 = base64_decode(it2->value);
-        return val1.substr(0, val2.size()) == val2;
-    }
-}
-
-static bool is_set_of(const rjson::value& type1, const rjson::value& type2) {
-    return (type2 == "S" && type1 == "SS") || (type2 == "N" && type1 == "NS") || (type2 == "B" && type1 == "BS");
-}
-
-// Check if two JSON-encoded values match with the CONTAINS relation
-bool check_CONTAINS(const rjson::value* v1, const rjson::value& v2) {
-    if (!v1) {
-        return false;
-    }
-    const auto& kv1 = *v1->MemberBegin();
-    const auto& kv2 = *v2.MemberBegin();
-    if (kv2.name != "S" && kv2.name != "N" &&  kv2.name != "B") {
-        throw api_error("ValidationException",
-                        format("CONTAINS operator requires a single AttributeValue of type String, Number, or Binary, "
-                               "got {} instead", kv2.name));
-    }
-    if (kv1.name == "S" && kv2.name == "S") {
-        return rjson::to_string_view(kv1.value).find(rjson::to_string_view(kv2.value)) != std::string_view::npos;
-    } else if (kv1.name == "B" && kv2.name == "B") {
-        return base64_decode(kv1.value).find(base64_decode(kv2.value)) != bytes::npos;
-    } else if (is_set_of(kv1.name, kv2.name)) {
-        for (auto i = kv1.value.Begin(); i != kv1.value.End(); ++i) {
-            if (*i == kv2.value) {
-                return true;
-            }
-        }
-    } else if (kv1.name == "L") {
-        for (auto i = kv1.value.Begin(); i != kv1.value.End(); ++i) {
-            if (!i->IsObject() || i->MemberCount() != 1) {
-                clogger.error("check_CONTAINS received a list whose element is malformed");
-                return false;
-            }
-            const auto& el = *i->MemberBegin();
-            if (el.name == kv2.name && el.value == kv2.value) {
-                return true;
-            }
-        }
-    }
-    return false;
-}
-
-// Check if two JSON-encoded values match with the NOT_CONTAINS relation
-static bool check_NOT_CONTAINS(const rjson::value* v1, const rjson::value& v2) {
-    if (!v1) {
-        return false;
-    }
-    return !check_CONTAINS(v1, v2);
-}
-
-// Check if a JSON-encoded value equals any element of an array, which must have at least one element.
-static bool check_IN(const rjson::value* val, const rjson::value& array) {
-    if (!array[0].IsObject() || array[0].MemberCount() != 1) {
-        throw api_error("ValidationException",
-                        format("IN operator encountered malformed AttributeValue: {}", array[0]));
-    }
-    const auto& type = array[0].MemberBegin()->name;
-    if (type != "S" && type != "N" && type != "B") {
-        throw api_error("ValidationException",
-                        "IN operator requires AttributeValueList elements to be of type String, Number, or Binary ");
-    }
-    if (!val) {
-        return false;
-    }
-    bool have_match = false;
-    for (const auto& elem : array.GetArray()) {
-        if (!elem.IsObject() || elem.MemberCount() != 1 || elem.MemberBegin()->name != type) {
-            throw api_error("ValidationException",
-                            "IN operator requires all AttributeValueList elements to have the same type ");
-        }
-        if (!have_match && *val == elem) {
-            // Can't return yet, must check types of all array elements. <sigh>
-            have_match = true;
-        }
-    }
-    return have_match;
-}
-
-// Another variant of check_IN, this one for ConditionExpression. It needs to
-// check whether the first element in the given vector is equal to any of the
-// others.
-static bool check_IN(const std::vector<rjson::value>& array) {
-    const rjson::value* first = &array[0];
-    for (unsigned i = 1; i < array.size(); i++) {
-        if (check_EQ(first, array[i])) {
-            return true;
-        }
-    }
-    return false;
-}
-
-static bool check_NULL(const rjson::value* val) {
-    return val == nullptr;
-}
-
-static bool check_NOT_NULL(const rjson::value* val) {
-    return val != nullptr;
-}
-
-// Check if two JSON-encoded values match with cmp.
-template <typename Comparator>
-bool check_compare(const rjson::value* v1, const rjson::value& v2, const Comparator& cmp) {
-    if (!v2.IsObject() || v2.MemberCount() != 1) {
-        throw api_error("ValidationException",
-                        format("{} requires a single AttributeValue of type String, Number, or Binary",
-                               cmp.diagnostic));
-    }
-    const auto& kv2 = *v2.MemberBegin();
-    if (kv2.name != "S" && kv2.name != "N" && kv2.name != "B") {
-        throw api_error("ValidationException",
-                        format("{} requires a single AttributeValue of type String, Number, or Binary",
-                               cmp.diagnostic));
-    }
-    if (!v1 || !v1->IsObject() || v1->MemberCount() != 1) {
-        return false;
-    }
-    const auto& kv1 = *v1->MemberBegin();
-    if (kv1.name != kv2.name) {
-        return false;
-    }
-    if (kv1.name == "N") {
-        return cmp(unwrap_number(*v1, cmp.diagnostic), unwrap_number(v2, cmp.diagnostic));
-    }
-    if (kv1.name == "S") {
-        return cmp(std::string_view(kv1.value.GetString(), kv1.value.GetStringLength()),
-                   std::string_view(kv2.value.GetString(), kv2.value.GetStringLength()));
-    }
-    if (kv1.name == "B") {
-        return cmp(base64_decode(kv1.value), base64_decode(kv2.value));
-    }
-    clogger.error("check_compare panic: LHS type equals RHS type, but one is in {N,S,B} while the other isn't");
-    return false;
-}
-
-struct cmp_lt {
-    template <typename T> bool operator()(const T& lhs, const T& rhs) const { return lhs < rhs; }
-    // We cannot use the normal comparison operators like "<" on the bytes
-    // type, because they treat individual bytes as signed but we need to
-    // compare them as *unsigned*. So we need a specialization for bytes.
-    bool operator()(const bytes& lhs, const bytes& rhs) const { return compare_unsigned(lhs, rhs) < 0; }
-    static constexpr const char* diagnostic = "LT operator";
-};
-
-struct cmp_le {
-    template <typename T> bool operator()(const T& lhs, const T& rhs) const { return lhs <= rhs; }
-    bool operator()(const bytes& lhs, const bytes& rhs) const { return compare_unsigned(lhs, rhs) <= 0; }
-    static constexpr const char* diagnostic = "LE operator";
-};
-
-struct cmp_ge {
-    template <typename T> bool operator()(const T& lhs, const T& rhs) const { return lhs >= rhs; }
-    bool operator()(const bytes& lhs, const bytes& rhs) const { return compare_unsigned(lhs, rhs) >= 0; }
-    static constexpr const char* diagnostic = "GE operator";
-};
-
-struct cmp_gt {
-    template <typename T> bool operator()(const T& lhs, const T& rhs) const { return lhs > rhs; }
-    bool operator()(const bytes& lhs, const bytes& rhs) const { return compare_unsigned(lhs, rhs) > 0; }
-    static constexpr const char* diagnostic = "GT operator";
-};
-
-// True if v is between lb and ub, inclusive.  Throws if lb > ub.
-template <typename T>
-bool check_BETWEEN(const T& v, const T& lb, const T& ub) {
-    if (cmp_lt()(ub, lb)) {
-        throw api_error("ValidationException",
-                        format("BETWEEN operator requires lower_bound <= upper_bound, but {} > {}", lb, ub));
-    }
-    return cmp_ge()(v, lb) && cmp_le()(v, ub);
-}
-
-static bool check_BETWEEN(const rjson::value* v, const rjson::value& lb, const rjson::value& ub) {
-    if (!v) {
-        return false;
-    }
-    if (!v->IsObject() || v->MemberCount() != 1) {
-        throw api_error("ValidationException", format("BETWEEN operator encountered malformed AttributeValue: {}", *v));
-    }
-    if (!lb.IsObject() || lb.MemberCount() != 1) {
-        throw api_error("ValidationException", format("BETWEEN operator encountered malformed AttributeValue: {}", lb));
-    }
-    if (!ub.IsObject() || ub.MemberCount() != 1) {
-        throw api_error("ValidationException", format("BETWEEN operator encountered malformed AttributeValue: {}", ub));
-    }
-
-    const auto& kv_v = *v->MemberBegin();
-    const auto& kv_lb = *lb.MemberBegin();
-    const auto& kv_ub = *ub.MemberBegin();
-    if (kv_lb.name != kv_ub.name) {
-        throw api_error(
-                "ValidationException",
-                format("BETWEEN operator requires the same type for lower and upper bound; instead got {} and {}",
-                       kv_lb.name, kv_ub.name));
-    }
-    if (kv_v.name != kv_lb.name) { // Cannot compare different types, so v is NOT between lb and ub.
-        return false;
-    }
-    if (kv_v.name == "N") {
-        const char* diag = "BETWEEN operator";
-        return check_BETWEEN(unwrap_number(*v, diag), unwrap_number(lb, diag), unwrap_number(ub, diag));
-    }
-    if (kv_v.name == "S") {
-        return check_BETWEEN(std::string_view(kv_v.value.GetString(), kv_v.value.GetStringLength()),
-                             std::string_view(kv_lb.value.GetString(), kv_lb.value.GetStringLength()),
-                             std::string_view(kv_ub.value.GetString(), kv_ub.value.GetStringLength()));
-    }
-    if (kv_v.name == "B") {
-        return check_BETWEEN(base64_decode(kv_v.value), base64_decode(kv_lb.value), base64_decode(kv_ub.value));
-    }
-    throw api_error("ValidationException",
-        format("BETWEEN operator requires AttributeValueList elements to be of type String, Number, or Binary; instead got {}",
-               kv_lb.name));
-}
-
-// Verify one Expect condition on one attribute (whose content is "got")
-// for the verify_expected() below.
-// This function returns true or false depending on whether the condition
-// succeeded - it does not throw ConditionalCheckFailedException.
-// However, it may throw ValidationException on input validation errors.
-static bool verify_expected_one(const rjson::value& condition, const rjson::value* got) {
-    const rjson::value* comparison_operator = rjson::find(condition, "ComparisonOperator");
-    const rjson::value* attribute_value_list = rjson::find(condition, "AttributeValueList");
-    const rjson::value* value = rjson::find(condition, "Value");
-    const rjson::value* exists = rjson::find(condition, "Exists");
-    // There are three types of conditions that Expected supports:
-    // A value, not-exists, and a comparison of some kind. Each allows
-    // and requires a different combinations of parameters in the request
-    if (value) {
-        if (exists && (!exists->IsBool() || exists->GetBool() != true)) {
-            throw api_error("ValidationException", "Cannot combine Value with Exists!=true");
-        }
-        if (comparison_operator) {
-            throw api_error("ValidationException", "Cannot combine Value with ComparisonOperator");
-        }
-        return check_EQ(got, *value);
-    } else if (exists) {
-        if (comparison_operator) {
-            throw api_error("ValidationException", "Cannot combine Exists with ComparisonOperator");
-        }
-        if (!exists->IsBool() || exists->GetBool() != false) {
-            throw api_error("ValidationException", "Exists!=false requires Value");
-        }
-        // Remember Exists=false, so we're checking that the attribute does *not* exist:
-        return !got;
-    } else {
-        if (!comparison_operator) {
-            throw api_error("ValidationException", "Missing ComparisonOperator, Value or Exists");
-        }
-        comparison_operator_type op = get_comparison_operator(*comparison_operator);
-        switch (op) {
-        case comparison_operator_type::EQ:
-            verify_operand_count(attribute_value_list, exact_size(1), *comparison_operator);
-            return check_EQ(got, (*attribute_value_list)[0]);
-        case comparison_operator_type::NE:
-            verify_operand_count(attribute_value_list, exact_size(1), *comparison_operator);
-            return check_NE(got, (*attribute_value_list)[0]);
-        case comparison_operator_type::LT:
-            verify_operand_count(attribute_value_list, exact_size(1), *comparison_operator);
-            return check_compare(got, (*attribute_value_list)[0], cmp_lt{});
-        case comparison_operator_type::LE:
-            verify_operand_count(attribute_value_list, exact_size(1), *comparison_operator);
-            return check_compare(got, (*attribute_value_list)[0], cmp_le{});
-        case comparison_operator_type::GT:
-            verify_operand_count(attribute_value_list, exact_size(1), *comparison_operator);
-            return check_compare(got, (*attribute_value_list)[0], cmp_gt{});
-        case comparison_operator_type::GE:
-            verify_operand_count(attribute_value_list, exact_size(1), *comparison_operator);
-            return check_compare(got, (*attribute_value_list)[0], cmp_ge{});
-        case comparison_operator_type::BEGINS_WITH:
-            verify_operand_count(attribute_value_list, exact_size(1), *comparison_operator);
-            return check_BEGINS_WITH(got, (*attribute_value_list)[0]);
-        case comparison_operator_type::IN:
-            verify_operand_count(attribute_value_list, nonempty(), *comparison_operator);
-            return check_IN(got, *attribute_value_list);
-        case comparison_operator_type::IS_NULL:
-            verify_operand_count(attribute_value_list, empty(), *comparison_operator);
-            return check_NULL(got);
-        case comparison_operator_type::NOT_NULL:
-            verify_operand_count(attribute_value_list, empty(), *comparison_operator);
-            return check_NOT_NULL(got);
-        case comparison_operator_type::BETWEEN:
-            verify_operand_count(attribute_value_list, exact_size(2), *comparison_operator);
-            return check_BETWEEN(got, (*attribute_value_list)[0], (*attribute_value_list)[1]);
-        case comparison_operator_type::CONTAINS:
-            verify_operand_count(attribute_value_list, exact_size(1), *comparison_operator);
-            return check_CONTAINS(got, (*attribute_value_list)[0]);
-        case comparison_operator_type::NOT_CONTAINS:
-            verify_operand_count(attribute_value_list, exact_size(1), *comparison_operator);
-            return check_NOT_CONTAINS(got, (*attribute_value_list)[0]);
-        }
-        throw std::logic_error(format("Internal error: corrupted operator enum: {}", int(op)));
-    }
-}
-
-// Check if the existing values of the item (previous_item) match the
-// conditions given by the Expected and ConditionalOperator parameters
-// (if they exist) in the request (an UpdateItem, PutItem or DeleteItem).
-// This function can throw an ValidationException API error if there
-// are errors in the format of the condition itself.
-bool verify_expected(const rjson::value& req, const std::unique_ptr<rjson::value>& previous_item) {
-    const rjson::value* expected = rjson::find(req, "Expected");
-    if (!expected) {
-        return true;
-    }
-    if (!expected->IsObject()) {
-        throw api_error("ValidationException", "'Expected' parameter, if given, must be an object");
-    }
-    // ConditionalOperator can be "AND" for requiring all conditions, or
-    // "OR" for requiring one condition, and defaults to "AND" if missing.
-    const rjson::value* conditional_operator = rjson::find(req, "ConditionalOperator");
-    bool require_all = true;
-    if (conditional_operator) {
-        if (!conditional_operator->IsString()) {
-            throw api_error("ValidationException", "'ConditionalOperator' parameter, if given, must be a string");
-        }
-        std::string_view s(conditional_operator->GetString(), conditional_operator->GetStringLength());
-        if (s == "AND") {
-            // require_all is already true
-        } else if (s == "OR") {
-            require_all = false;
-        } else {
-            throw api_error("ValidationException", "'ConditionalOperator' parameter must be AND, OR or missing");
-        }
-        if (expected->GetObject().ObjectEmpty()) {
-            throw api_error("ValidationException", "'ConditionalOperator' parameter cannot be specified for empty Expression");
-        }
-    }
-
-    for (auto it = expected->MemberBegin(); it != expected->MemberEnd(); ++it) {
-        const rjson::value* got = nullptr;
-        if (previous_item && previous_item->IsObject() && previous_item->HasMember("Item")) {
-            got = rjson::find((*previous_item)["Item"], rjson::to_string_view(it->name));
-        }
-        bool success = verify_expected_one(it->value, got);
-        if (success && !require_all) {
-            // When !require_all, one success is enough!
-            return true;
-        } else if (!success && require_all) {
-            // When require_all, one failure is enough!
-            return false;
-        }
-    }
-    // If we got here and require_all, none of the checks failed, so succeed.
-    // If we got here and !require_all, all of the checks failed, so fail.
-    return require_all;
-}
-
-bool calculate_primitive_condition(const parsed::primitive_condition& cond,
-        std::unordered_set<std::string>& used_attribute_values,
-        std::unordered_set<std::string>& used_attribute_names,
-        const rjson::value& req,
-        schema_ptr schema,
-        const std::unique_ptr<rjson::value>& previous_item) {
-    std::vector<rjson::value> calculated_values;
-    calculated_values.reserve(cond._values.size());
-    for (const parsed::value& v : cond._values) {
-        calculated_values.push_back(calculate_value(v,
-                cond._op == parsed::primitive_condition::type::VALUE ?
-                        calculate_value_caller::ConditionExpressionAlone :
-                        calculate_value_caller::ConditionExpression,
-                rjson::find(req, "ExpressionAttributeValues"),
-                used_attribute_names, used_attribute_values,
-                req, schema, previous_item));
-    }
-    switch (cond._op) {
-    case parsed::primitive_condition::type::BETWEEN:
-        if (calculated_values.size() != 3) {
-            // Shouldn't happen unless we have a bug in the parser
-            throw std::logic_error(format("Wrong number of values {} in BETWEEN primitive_condition", cond._values.size()));
-        }
-        return check_BETWEEN(&calculated_values[0], calculated_values[1], calculated_values[2]);
-    case parsed::primitive_condition::type::IN:
-        return check_IN(calculated_values);
-    case parsed::primitive_condition::type::VALUE:
-        if (calculated_values.size() != 1) {
-            // Shouldn't happen unless we have a bug in the parser
-            throw std::logic_error(format("Unexpected values in primitive_condition", cond._values.size()));
-        }
-        // Unwrap the boolean wrapped as the value (if it is a boolean)
-        if (calculated_values[0].IsObject() && calculated_values[0].MemberCount() == 1) {
-            auto it = calculated_values[0].MemberBegin();
-            if (it->name == "BOOL" && it->value.IsBool()) {
-                return it->value.GetBool();
-            }
-        }
-        throw api_error("ValidationException",
-                format("ConditionExpression: condition results in a non-boolean value: {}",
-                        calculated_values[0]));
-    default:
-        // All the rest of the operators have exactly two parameters (and unless
-        // we have a bug in the parser, that's what we have in the parsed object:
-        if (calculated_values.size() != 2) {
-            throw std::logic_error(format("Wrong number of values {} in primitive_condition object", cond._values.size()));
-        }
-    }
-    switch (cond._op) {
-    case parsed::primitive_condition::type::EQ:
-        return check_EQ(&calculated_values[0], calculated_values[1]);
-    case parsed::primitive_condition::type::NE:
-        return check_NE(&calculated_values[0], calculated_values[1]);
-    case parsed::primitive_condition::type::GT:
-        return check_compare(&calculated_values[0], calculated_values[1], cmp_gt{});
-    case parsed::primitive_condition::type::GE:
-        return check_compare(&calculated_values[0], calculated_values[1], cmp_ge{});
-    case parsed::primitive_condition::type::LT:
-        return check_compare(&calculated_values[0], calculated_values[1], cmp_lt{});
-    case parsed::primitive_condition::type::LE:
-        return check_compare(&calculated_values[0], calculated_values[1], cmp_le{});
-    default:
-        // Shouldn't happen unless we have a bug in the parser
-        throw std::logic_error(format("Unknown type {} in primitive_condition object", (int)(cond._op)));
-    }
-}
-
-// Check if the existing values of the item (previous_item) match the
-// conditions given by the given parsed ConditionExpression.
-bool verify_condition_expression(
-        const parsed::condition_expression& condition_expression,
-        std::unordered_set<std::string>& used_attribute_values,
-        std::unordered_set<std::string>& used_attribute_names,
-        const rjson::value& req,
-        schema_ptr schema,
-        const std::unique_ptr<rjson::value>& previous_item) {
-    if (condition_expression.empty()) {
-        return true;
-    }
-    bool ret = std::visit(overloaded_functor {
-        [&] (const parsed::primitive_condition& cond) -> bool {
-            return calculate_primitive_condition(cond, used_attribute_values,
-                    used_attribute_names, req, schema, previous_item);
-        },
-        [&] (const parsed::condition_expression::condition_list& list) -> bool {
-            auto verify_condition = [&] (const parsed::condition_expression& e) {
-                return verify_condition_expression(e, used_attribute_values,
-                        used_attribute_names, req, schema, previous_item);
-            };
-            switch (list.op) {
-            case '&':
-                return boost::algorithm::all_of(list.conditions, verify_condition);
-            case '|':
-                return boost::algorithm::any_of(list.conditions, verify_condition);
-            default:
-                // Shouldn't happen unless we have a bug in the parser
-                throw std::logic_error("bad operator in condition_list");
-            }
-        }
-    }, condition_expression._expression);
-    return condition_expression._negated ? !ret : ret;
-}
-
-}

alternator/conditions.hh

@@ -1,49 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-/*
- * This file contains definitions and functions related to placing conditions
- * on Alternator queries (equivalent of CQL's restrictions).
- *
- * With conditions, it's possible to add criteria to selection requests (Scan, Query)
- * and use them for narrowing down the result set, by means of filtering or indexing.
- *
- * Ref: https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_Condition.html
- */
-
-#pragma once
-
-#include "cql3/restrictions/statement_restrictions.hh"
-#include "serialization.hh"
-
-namespace alternator {
-
-enum class comparison_operator_type {
-    EQ, NE, LE, LT, GE, GT, IN, BETWEEN, CONTAINS, NOT_CONTAINS, IS_NULL, NOT_NULL, BEGINS_WITH
-};
-
-comparison_operator_type get_comparison_operator(const rjson::value& comparison_operator);
-
-::shared_ptr<cql3::restrictions::statement_restrictions> get_filtering_restrictions(schema_ptr schema, const column_definition& attrs_col, const rjson::value& query_filter);
-
-bool verify_expected(const rjson::value& req, const std::unique_ptr<rjson::value>& previous_item);
-
-}

alternator/error.hh

@@ -1,50 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-#include <seastar/http/httpd.hh>
-#include "seastarx.hh"
-
-namespace alternator {
-
-// DynamoDB's error messages are described in detail in
-// https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Programming.Errors.html
-// Ah An error message has a "type", e.g., "ResourceNotFoundException", a coarser
-// HTTP code (almost always, 400), and a human readable message. Eventually these
-// will be wrapped into a JSON object returned to the client.
-class api_error : public std::exception {
-public:
-    using status_type = httpd::reply::status_type;
-    status_type _http_code;
-    std::string _type;
-    std::string _msg;
-    api_error(std::string type, std::string msg, status_type http_code = status_type::bad_request)
-        : _http_code(std::move(http_code))
-        , _type(std::move(type))
-        , _msg(std::move(msg))
-    { }
-    api_error() = default;
-    virtual const char* what() const noexcept override { return _msg.c_str(); }
-};
-
-}
-

alternator/executor.hh

@@ -1,82 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-#include <seastar/core/future.hh>
-#include <seastar/http/httpd.hh>
-#include "seastarx.hh"
-#include <seastar/json/json_elements.hh>
-#include <seastar/core/sharded.hh>
-
-#include "service/storage_proxy.hh"
-#include "service/migration_manager.hh"
-#include "service/client_state.hh"
-
-#include "alternator/error.hh"
-#include "stats.hh"
-#include "rjson.hh"
-
-namespace alternator {
-
-class executor : public peering_sharded_service<executor> {
-    service::storage_proxy& _proxy;
-    service::migration_manager& _mm;
-    // An smp_service_group to be used for limiting the concurrency when
-    // forwarding Alternator request between shards - if necessary for LWT.
-    smp_service_group _ssg;
-
-public:
-    using client_state = service::client_state;
-    using request_return_type = std::variant<json::json_return_type, api_error>;
-    stats _stats;
-    static constexpr auto ATTRS_COLUMN_NAME = ":attrs";
-    static constexpr auto KEYSPACE_NAME_PREFIX = "alternator_";
-
-    executor(service::storage_proxy& proxy, service::migration_manager& mm, smp_service_group ssg)
-        : _proxy(proxy), _mm(mm), _ssg(ssg) {}
-
-    future<request_return_type> create_table(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request);
-    future<request_return_type> describe_table(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request);
-    future<request_return_type> delete_table(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request);
-    future<request_return_type> put_item(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request);
-    future<request_return_type> get_item(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request);
-    future<request_return_type> delete_item(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request);
-    future<request_return_type> update_item(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request);
-    future<request_return_type> list_tables(client_state& client_state, service_permit permit, rjson::value request);
-    future<request_return_type> scan(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request);
-    future<request_return_type> describe_endpoints(client_state& client_state, service_permit permit, rjson::value request, std::string host_header);
-    future<request_return_type> batch_write_item(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request);
-    future<request_return_type> batch_get_item(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request);
-    future<request_return_type> query(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request);
-    future<request_return_type> tag_resource(client_state& client_state, service_permit permit, rjson::value request);
-    future<request_return_type> untag_resource(client_state& client_state, service_permit permit, rjson::value request);
-    future<request_return_type> list_tags_of_resource(client_state& client_state, service_permit permit, rjson::value request);
-
-    future<> start();
-    future<> stop() { return make_ready_future<>(); }
-
-    future<> create_keyspace(std::string_view keyspace_name);
-
-    static tracing::trace_state_ptr maybe_trace_query(client_state& client_state, sstring_view op, sstring_view query);
-};
-
-}

alternator/expressions.cc

@@ -1,127 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "expressions.hh"
-#include "alternator/expressionsLexer.hpp"
-#include "alternator/expressionsParser.hpp"
-#include "utils/overloaded_functor.hh"
-
-#include <seastarx.hh>
-
-#include <seastar/core/print.hh>
-#include <seastar/util/log.hh>
-
-#include <functional>
-
-namespace alternator {
-
-template <typename Func, typename Result = std::result_of_t<Func(expressionsParser&)>>
-Result do_with_parser(std::string input, Func&& f) {
-    expressionsLexer::InputStreamType input_stream{
-        reinterpret_cast<const ANTLR_UINT8*>(input.data()),
-        ANTLR_ENC_UTF8,
-        static_cast<ANTLR_UINT32>(input.size()),
-        nullptr };
-    expressionsLexer lexer(&input_stream);
-    expressionsParser::TokenStreamType tstream(ANTLR_SIZE_HINT, lexer.get_tokSource());
-    expressionsParser parser(&tstream);
-
-    auto result = f(parser);
-    return result;
-}
-
-parsed::update_expression
-parse_update_expression(std::string query) {
-    try {
-        return do_with_parser(query,  std::mem_fn(&expressionsParser::update_expression));
-    } catch (...) {
-        throw expressions_syntax_error(format("Failed parsing UpdateExpression '{}': {}", query, std::current_exception()));
-    }
-}
-
-std::vector<parsed::path>
-parse_projection_expression(std::string query) {
-    try {
-        return do_with_parser(query,  std::mem_fn(&expressionsParser::projection_expression));
-    } catch (...) {
-        throw expressions_syntax_error(format("Failed parsing ProjectionExpression '{}': {}", query, std::current_exception()));
-    }
-}
-
-parsed::condition_expression
-parse_condition_expression(std::string query) {
-    try {
-        return do_with_parser(query,  std::mem_fn(&expressionsParser::condition_expression));
-    } catch (...) {
-        throw expressions_syntax_error(format("Failed parsing ConditionExpression '{}': {}", query, std::current_exception()));
-    }
-}
-
-namespace parsed {
-
-void update_expression::add(update_expression::action a) {
-    std::visit(overloaded_functor {
-        [&] (action::set&)    { seen_set = true; },
-        [&] (action::remove&) { seen_remove = true; },
-        [&] (action::add&)    { seen_add = true; },
-        [&] (action::del&)    { seen_del = true; }
-    }, a._action);
-    _actions.push_back(std::move(a));
-}
-
-void update_expression::append(update_expression other) {
-    if ((seen_set && other.seen_set) ||
-        (seen_remove && other.seen_remove) ||
-        (seen_add && other.seen_add) ||
-        (seen_del && other.seen_del)) {
-        throw expressions_syntax_error("Each of SET, REMOVE, ADD, DELETE may only appear once in UpdateExpression");
-    }
-    std::move(other._actions.begin(), other._actions.end(), std::back_inserter(_actions));
-    seen_set |= other.seen_set;
-    seen_remove |= other.seen_remove;
-    seen_add |= other.seen_add;
-    seen_del |= other.seen_del;
-}
-
-void condition_expression::append(condition_expression&& a, char op) {
-    std::visit(overloaded_functor {
-        [&] (condition_list& x) {
-            // If 'a' has a single condition, we could, instead of inserting
-            // it insert its single condition (possibly negated if a._negated)
-            // But considering it we don't evaluate these expressions many
-            // times, this optimization is not worth extra code complexity.
-            if (!x.conditions.empty() && x.op != op) {
-                // Shouldn't happen unless we have a bug in the parser
-                throw std::logic_error("condition_expression::append called with mixed operators");
-            }
-            x.conditions.push_back(std::move(a));
-            x.op = op;
-        },
-        [&] (primitive_condition& x) {
-            // Shouldn't happen unless we have a bug in the parser
-            throw std::logic_error("condition_expression::append called on primitive_condition");
-        }
-    }, _expression);
-}
-
-
-} // namespace parsed
-} // namespace alternator

alternator/expressions.g

@@ -1,265 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- *
- * This file is part of Scylla. See the LICENSE.PROPRIETARY file in the
- * top-level directory for licensing information.
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-/*
- * The DynamoDB protocol is based on JSON, and most DynamoDB requests
- * describe the operation and its parameters via JSON objects such as maps
- * and lists. Nevertheless, in some types of requests an "expression" is
- * passed as a single string, and we need to parse this string. These
- * cases include:
- *  1. Attribute paths, such as "a[3].b.c", are used in projection
- *     expressions as well as inside other expressions described below.
- *  2. Condition expressions, such as "(NOT (a=b OR c=d)) AND e=f",
- *     used in conditional updates, filters, and other places.
- *  3. Update expressions, such as "SET #a.b = :x, c = :y DELETE d"
- *
- * All these expression syntaxes are very simple: Most of them could be
- * parsed as regular expressions, and the parenthesized condition expression
- * could be done with a simple hand-written lexical analyzer and recursive-
- * descent parser. Nevertheless, we decided to specify these parsers in the
- * ANTLR3 language already used in the Scylla project, hopefully making these
- * parsers easier to reason about, and easier to change if needed - and
- * reducing the amount of boiler-plate code.
- */
-
-grammar expressions;
-
-options {
-    language = Cpp;
-}
-
-@parser::namespace{alternator}
-@lexer::namespace{alternator}
-
-/* TODO: explain what these traits things are. I haven't seen them explained
- * in any document... Compilation fails without these fail because a definition
- * of "expressionsLexerTraits" and "expressionParserTraits" is needed.
- */
-@lexer::traits {
-    class expressionsLexer;
-    class expressionsParser;
-    typedef antlr3::Traits<expressionsLexer, expressionsParser> expressionsLexerTraits;
-}
-@parser::traits {
-    typedef expressionsLexerTraits expressionsParserTraits;
-}
-
-@lexer::header {
-	#include "alternator/expressions.hh"
-	// ANTLR generates a bunch of unused variables and functions. Yuck...
-    #pragma GCC diagnostic ignored "-Wunused-variable"
-    #pragma GCC diagnostic ignored "-Wunused-function"
-}
-@parser::header {
-	#include "expressionsLexer.hpp"
-}
-
-/* By default, ANTLR3 composes elaborate syntax-error messages, saying which
- * token was unexpected, where, and so on on, but then dutifully writes these
- * error messages to the standard error, and returns from the parser as if
- * everything was fine, with a half-constructed output object! If we define
- * the "displayRecognitionError" method, it will be called upon to build this
- * error message, and we can instead throw an exception to stop the parsing
- * immediately. This is good enough for now, for our simple needs, but if
- * we ever want to show more information about the syntax error, Cql3.g
- * contains an elaborate implementation (it would be nice if we could reuse
- * it, not duplicate it).
- * Unfortunately, we have to repeat the same definition twice - once for the
- * parser, and once for the lexer.
- */
-@parser::context {
-    void displayRecognitionError(ANTLR_UINT8** token_names, ExceptionBaseType* ex) {
-        throw expressions_syntax_error("syntax error");
-    }
-}
-@lexer::context {
-    void displayRecognitionError(ANTLR_UINT8** token_names, ExceptionBaseType* ex) {
-        throw expressions_syntax_error("syntax error");
-    }
-}
-
-/*
- * Lexical analysis phase, i.e., splitting the input up to tokens.
- * Lexical analyzer rules have names starting in capital letters.
- * "fragment" rules do not generate tokens, and are just aliases used to
- * make other rules more readable.
- * Characters *not* listed here, e.g., '=', '(', etc., will be handled
- * as individual tokens on their own right.
- * Whitespace spans are skipped, so do not generate tokens.
- */
-WHITESPACE: (' ' | '\t' | '\n' | '\r')+ { skip(); };
-
-/* shortcuts for case-insensitive keywords */
-fragment A:('a'|'A');
-fragment B:('b'|'B');
-fragment C:('c'|'C');
-fragment D:('d'|'D');
-fragment E:('e'|'E');
-fragment F:('f'|'F');
-fragment G:('g'|'G');
-fragment H:('h'|'H');
-fragment I:('i'|'I');
-fragment J:('j'|'J');
-fragment K:('k'|'K');
-fragment L:('l'|'L');
-fragment M:('m'|'M');
-fragment N:('n'|'N');
-fragment O:('o'|'O');
-fragment P:('p'|'P');
-fragment Q:('q'|'Q');
-fragment R:('r'|'R');
-fragment S:('s'|'S');
-fragment T:('t'|'T');
-fragment U:('u'|'U');
-fragment V:('v'|'V');
-fragment W:('w'|'W');
-fragment X:('x'|'X');
-fragment Y:('y'|'Y');
-fragment Z:('z'|'Z');
-/* These keywords must be appear before the generic NAME token below,
- * because NAME matches too, and the first to match wins.
- */
-SET: S E T;
-REMOVE: R E M O V E;
-ADD: A D D;
-DELETE: D E L E T E;
-
-AND: A N D;
-OR: O R;
-NOT: N O T;
-BETWEEN: B E T W E E N;
-IN: I N;
-
-fragment ALPHA: 'A'..'Z' | 'a'..'z';
-fragment DIGIT: '0'..'9';
-fragment ALNUM: ALPHA | DIGIT | '_';
-INTEGER: DIGIT+;
-NAME: ALPHA ALNUM*;
-NAMEREF: '#' ALNUM+;
-VALREF: ':' ALNUM+;
-
-/*
- * Parsing phase - parsing the string of tokens generated by the lexical
- * analyzer defined above.
- */
-
-path_component: NAME | NAMEREF;
-path returns [parsed::path p]:
-    root=path_component           { $p.set_root($root.text); }
-    (   '.' name=path_component   { $p.add_dot($name.text); }
-      | '[' INTEGER ']'           { $p.add_index(std::stoi($INTEGER.text)); }
-    )*;
-
-value returns [parsed::value v]:
-      VALREF       { $v.set_valref($VALREF.text); }
-    | path         { $v.set_path($path.p); }
-    | NAME         { $v.set_func_name($NAME.text); }
-     '(' x=value   { $v.add_func_parameter($x.v); }
-     (',' x=value  { $v.add_func_parameter($x.v); })*
-     ')'
-    ;
-
-update_expression_set_rhs returns [parsed::set_rhs rhs]:
-    v=value  { $rhs.set_value(std::move($v.v)); }
-    (   '+' v=value  { $rhs.set_plus(std::move($v.v)); }
-      | '-' v=value  { $rhs.set_minus(std::move($v.v)); }
-    )?
-    ;
-
-update_expression_set_action returns [parsed::update_expression::action a]:
-    path '=' rhs=update_expression_set_rhs { $a.assign_set($path.p, $rhs.rhs); };
-
-update_expression_remove_action returns [parsed::update_expression::action a]:
-    path { $a.assign_remove($path.p); };
-
-update_expression_add_action returns [parsed::update_expression::action a]:
-    path VALREF { $a.assign_add($path.p, $VALREF.text); };
-
-update_expression_delete_action returns [parsed::update_expression::action a]:
-    path VALREF { $a.assign_del($path.p, $VALREF.text); };
-
-update_expression_clause returns [parsed::update_expression e]:
-      SET s=update_expression_set_action { $e.add(s); }
-      (',' s=update_expression_set_action { $e.add(s); })*
-    | REMOVE r=update_expression_remove_action { $e.add(r); }
-      (',' r=update_expression_remove_action { $e.add(r); })*
-    | ADD a=update_expression_add_action { $e.add(a); }
-      (',' a=update_expression_add_action { $e.add(a); })*
-    | DELETE d=update_expression_delete_action { $e.add(d); }
-      (',' d=update_expression_delete_action { $e.add(d); })*
-    ;
-
-// Note the "EOF" token at the end of the update expression. We want to the
-//  parser to match the entire string given to it - not just its beginning!
-update_expression returns [parsed::update_expression e]:
-    (update_expression_clause { e.append($update_expression_clause.e); })* EOF;
-
-projection_expression returns [std::vector<parsed::path> v]:
-    p=path      { $v.push_back(std::move($p.p)); }
-    (',' p=path { $v.push_back(std::move($p.p)); } )* EOF;
-
-
-primitive_condition returns [parsed::primitive_condition c]:
-      v=value         { $c.add_value(std::move($v.v));
-                        $c.set_operator(parsed::primitive_condition::type::VALUE); }
-      (  (  '='       { $c.set_operator(parsed::primitive_condition::type::EQ); }
-          | '<' '>'   { $c.set_operator(parsed::primitive_condition::type::NE); }
-          | '<'       { $c.set_operator(parsed::primitive_condition::type::LT); }
-          | '<' '='   { $c.set_operator(parsed::primitive_condition::type::LE); }
-          | '>'       { $c.set_operator(parsed::primitive_condition::type::GT); }
-          | '>' '='   { $c.set_operator(parsed::primitive_condition::type::GE); }
-         )
-         v=value      { $c.add_value(std::move($v.v)); }
-       | BETWEEN      { $c.set_operator(parsed::primitive_condition::type::BETWEEN); }
-         v=value      { $c.add_value(std::move($v.v)); }
-         AND
-         v=value      { $c.add_value(std::move($v.v)); }
-       | IN '('       { $c.set_operator(parsed::primitive_condition::type::IN); }
-         v=value      { $c.add_value(std::move($v.v)); }
-         (',' v=value { $c.add_value(std::move($v.v)); })*
-         ')'
-      )?
-    ;
-
-// The following rules for parsing boolean expressions are verbose and
-// somewhat strange because of Antlr 3's limitations on recursive rules,
-// common rule prefixes, and (lack of) support for operator precedence.
-// These rules could have been written more clearly using a more powerful
-// parser generator - such as Yacc.
-boolean_expression returns [parsed::condition_expression e]:
-	  b=boolean_expression_1       { $e.append(std::move($b.e), '|'); }
-	  (OR b=boolean_expression_1   { $e.append(std::move($b.e), '|'); } )*
-	;
-boolean_expression_1 returns [parsed::condition_expression e]:
-	  b=boolean_expression_2       { $e.append(std::move($b.e), '&'); }
-	  (AND b=boolean_expression_2  { $e.append(std::move($b.e), '&'); } )*
-	;
-boolean_expression_2 returns [parsed::condition_expression e]:
-	  p=primitive_condition        { $e.set_primitive(std::move($p.c)); }
-	| NOT b=boolean_expression_2   { $e = std::move($b.e); $e.apply_not(); }
-	| '(' b=boolean_expression ')' { $e = std::move($b.e); }
-    ;
-
-condition_expression returns [parsed::condition_expression e]:
-    boolean_expression { e=std::move($boolean_expression.e); } EOF;

alternator/expressions.hh

@@ -1,41 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-#include <string>
-#include <stdexcept>
-#include <vector>
-
-#include "expressions_types.hh"
-
-namespace alternator {
-
-class expressions_syntax_error : public std::runtime_error {
-public:
-    using runtime_error::runtime_error;
-};
-
-parsed::update_expression parse_update_expression(std::string query);
-std::vector<parsed::path> parse_projection_expression(std::string query);
-parsed::condition_expression parse_condition_expression(std::string query);
-
-} /* namespace alternator */

alternator/expressions_eval.hh

@@ -1,78 +0,0 @@
-/*
- * Copyright 2020 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-#include <string>
-#include <unordered_set>
-
-#include "rjson.hh"
-#include "schema_fwd.hh"
-
-#include "expressions_types.hh"
-
-namespace alternator {
-
-// calculate_value() behaves slightly different (especially, different
-// functions supported) when used in different types of expressions, as
-// enumerated in this enum:
-enum class calculate_value_caller {
-    UpdateExpression, ConditionExpression, ConditionExpressionAlone
-};
-
-inline std::ostream& operator<<(std::ostream& out, calculate_value_caller caller) {
-    switch (caller) {
-        case calculate_value_caller::UpdateExpression:
-            out << "UpdateExpression";
-            break;
-        case calculate_value_caller::ConditionExpression:
-            out << "ConditionExpression";
-            break;
-        case calculate_value_caller::ConditionExpressionAlone:
-            out << "ConditionExpression";
-            break;
-        default:
-            out << "unknown type of expression";
-            break;
-    }
-    return out;
-}
-
-bool check_CONTAINS(const rjson::value* v1, const rjson::value& v2);
-
-rjson::value calculate_value(const parsed::value& v,
-        calculate_value_caller caller,
-        const rjson::value* expression_attribute_values,
-        std::unordered_set<std::string>& used_attribute_names,
-        std::unordered_set<std::string>& used_attribute_values,
-        const rjson::value& update_info,
-        schema_ptr schema,
-        const std::unique_ptr<rjson::value>& previous_item);
-
-bool verify_condition_expression(
-        const parsed::condition_expression& condition_expression,
-        std::unordered_set<std::string>& used_attribute_values,
-        std::unordered_set<std::string>& used_attribute_names,
-        const rjson::value& req,
-        schema_ptr schema,
-        const std::unique_ptr<rjson::value>& previous_item);
-
-} /* namespace alternator */

alternator/expressions_types.hh

@@ -1,228 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-#include <vector>
-#include <string>
-#include <variant>
-
-/*
- * Parsed representation of expressions and their components.
- *
- * Types in alternator::parse namespace are used for holding the parse
- * tree - objects generated by the Antlr rules after parsing an expression.
- * Because of the way Antlr works, all these objects are default-constructed
- * first, and then assigned when the rule is completed, so all these types
- * have only default constructors - but setter functions to set them later.
- */
-
-namespace alternator {
-namespace parsed {
-
-// "path" is an attribute's path in a document, e.g., a.b[3].c.
-class path {
-    // All paths have a "root", a top-level attribute, and any number of
-    // "dereference operators" - each either an index (e.g., "[2]") or a
-    // dot (e.g., ".xyz").
-    std::string _root;
-    std::vector<std::variant<std::string, unsigned>> _operators;
-public:
-    void set_root(std::string root) {
-        _root = std::move(root);
-    }
-    void add_index(unsigned i) {
-        _operators.emplace_back(i);
-    }
-    void add_dot(std::string(name)) {
-        _operators.emplace_back(std::move(name));
-    }
-    const std::string& root() const {
-        return _root;
-    }
-    bool has_operators() const {
-        return !_operators.empty();
-    }
-};
-
-// "value" is is a value used in the right hand side of an assignment
-// expression, "SET a = ...". It can be a reference to a value included in
-// the request (":val"), a path to an attribute from the existing item
-// (e.g., "a.b[3].c"), or a function of other such values.
-// Note that the real right-hand-side of an assignment is actually a bit
-// more general - it allows either a value, or a value+value or value-value -
-// see class set_rhs below.
-struct value {
-    struct function_call {
-        std::string _function_name;
-        std::vector<value> _parameters;
-    };
-    std::variant<std::string, path, function_call> _value;
-    void set_valref(std::string s) {
-        _value = std::move(s);
-    }
-    void set_path(path p) {
-        _value = std::move(p);
-    }
-    void set_func_name(std::string s) {
-        _value = function_call {std::move(s), {}};
-    }
-    void add_func_parameter(value v) {
-        std::get<function_call>(_value)._parameters.emplace_back(std::move(v));
-    }
-    bool is_valref() const {
-        return std::holds_alternative<std::string>(_value);
-    }
-    bool is_path() const {
-        return std::holds_alternative<path>(_value);
-    }
-    bool is_func() const {
-        return std::holds_alternative<function_call>(_value);
-    }
-};
-
-// The right-hand-side of a SET in an update expression can be either a
-// single value (see above), or value+value, or value-value.
-class set_rhs {
-public:
-    char _op;  // '+', '-', or 'v''
-    value _v1;
-    value _v2;
-    void set_value(value&& v1) {
-        _op = 'v';
-        _v1 = std::move(v1);
-    }
-    void set_plus(value&& v2) {
-        _op = '+';
-        _v2 = std::move(v2);
-    }
-    void set_minus(value&& v2) {
-        _op = '-';
-        _v2 = std::move(v2);
-    }
-};
-
-class update_expression {
-public:
-    struct action {
-        path _path;
-        struct set {
-            set_rhs _rhs;
-        };
-        struct remove {
-        };
-        struct add {
-            std::string _valref;
-        };
-        struct del {
-            std::string _valref;
-        };
-        std::variant<set, remove, add, del> _action;
-
-        void assign_set(path p, set_rhs rhs) {
-            _path = std::move(p);
-            _action = set { std::move(rhs) };
-        }
-        void assign_remove(path p) {
-            _path = std::move(p);
-            _action = remove { };
-        }
-        void assign_add(path p, std::string v) {
-            _path = std::move(p);
-            _action = add { std::move(v) };
-        }
-        void assign_del(path p, std::string v) {
-            _path = std::move(p);
-            _action = del { std::move(v) };
-        }
-    };
-private:
-    std::vector<action> _actions;
-    bool seen_set = false;
-    bool seen_remove = false;
-    bool seen_add = false;
-    bool seen_del = false;
-public:
-    void add(action a);
-    void append(update_expression other);
-    bool empty() const {
-        return _actions.empty();
-    }
-    const std::vector<action>& actions() const {
-        return _actions;
-    }
-};
-
-// A primitive_condition is a condition expression involving one condition,
-// while the full condition_expression below adds boolean logic over these
-// primitive conditions.
-// The supported primitive conditions are:
-// 1. Binary operators - v1 OP v2, where OP is =, <>, <, <=, >, or >= and
-//    v1 and v2 are values - from the item (an attribute path), the query
-//    (a ":val" reference), or a function of the the above (only the size()
-//    function is supported).
-// 2. Ternary operator - v1 BETWEEN v2 and v3 (means v1 >= v2 AND v1 <= v3).
-// 3. N-ary operator - v1 IN ( v2, v3, ... )
-// 4. A single function call (attribute_exists etc.). The parser actually
-//    accepts a more general "value" here but later stages reject a value
-//    which is not a function call (because DynamoDB does it too).
-class primitive_condition {
-public:
-    enum class type {
-        UNDEFINED, VALUE, EQ, NE, LT, LE, GT, GE, BETWEEN, IN
-    };
-    type _op = type::UNDEFINED;
-    std::vector<value> _values;
-    void set_operator(type op) {
-        _op = op;
-    }
-    void add_value(value&& v) {
-        _values.push_back(std::move(v));
-    }
-    bool empty() const {
-        return _op == type::UNDEFINED;
-    }
-};
-
-class condition_expression {
-public:
-    bool _negated = false; // If true, the entire condition is negated
-    struct condition_list {
-        char op = '|'; // '&' or '|'
-        std::vector<condition_expression> conditions;
-    };
-    std::variant<primitive_condition, condition_list> _expression = condition_list();
-
-    void set_primitive(primitive_condition&& p) {
-        _expression = std::move(p);
-    }
-    void append(condition_expression&& c, char op);
-    void apply_not() {
-        _negated = !_negated;
-    }
-    bool empty() const {
-        return std::holds_alternative<condition_list>(_expression) &&
-               std::get<condition_list>(_expression).conditions.empty();
-    }
-};
-
-} // namespace parsed
-} // namespace alternator

alternator/rjson.cc

@@ -1,300 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "rjson.hh"
-#include "error.hh"
-#include <seastar/core/print.hh>
-#include <seastar/core/thread.hh>
-
-namespace rjson {
-
-static allocator the_allocator;
-
-/*
- * This wrapper class adds nested level checks to rapidjson's handlers.
- * Each rapidjson handler implements functions for accepting JSON values,
- * which includes strings, numbers, objects, arrays, etc.
- * Parsing objects and arrays needs to be performed carefully with regard
- * to stack overflow - each object/array layer adds another stack frame
- * to parsing, printing and destroying the parent JSON document.
- * To prevent stack overflow, a rapidjson handler can be wrapped with
- * guarded_json_handler, which accepts an additional max_nested_level parameter.
- * After trying to exceed the max nested level, a proper rjson::error will be thrown.
- */
-template<typename Handler, bool EnableYield>
-struct guarded_yieldable_json_handler : public Handler {
-    size_t _nested_level = 0;
-    size_t _max_nested_level;
-public:
-    using handler_base = Handler;
-
-    explicit guarded_yieldable_json_handler(size_t max_nested_level) : _max_nested_level(max_nested_level) {}
-    guarded_yieldable_json_handler(string_buffer& buf, size_t max_nested_level)
-            : handler_base(buf), _max_nested_level(max_nested_level) {}
-
-    void Parse(const char* str, size_t length) {
-        rapidjson::MemoryStream ms(static_cast<const char*>(str), length * sizeof(typename encoding::Ch));
-        rapidjson::EncodedInputStream<encoding, rapidjson::MemoryStream> is(ms);
-        rapidjson::GenericReader<encoding, encoding, allocator> reader(&the_allocator);
-        reader.Parse(is, *this);
-        if (reader.HasParseError()) {
-            throw rjson::error(format("Parsing JSON failed: {}", rapidjson::GetParseError_En(reader.GetParseErrorCode())));
-        }
-        //NOTICE: The handler has parsed the string, but in case of rapidjson::GenericDocument
-        // the data now resides in an internal stack_ variable, which is private instead of
-        // protected... which means we cannot simply access its data. Fortunately, another
-        // function for populating documents from SAX events can be abused to extract the data
-        // from the stack via gadget-oriented programming - we use an empty event generator
-        // which does nothing, and use it to call Populate(), which assumes that the generator
-        // will fill the stack with something. It won't, but our stack is already filled with
-        // data we want to steal, so once Populate() ends, our document will be properly parsed.
-        // A proper solution could be programmed once rapidjson declares this stack_ variable
-        // as protected instead of private, so that this class can access it.
-        auto dummy_generator = [](handler_base&){return true;};
-        handler_base::Populate(dummy_generator);
-    }
-
-    bool StartObject() {
-        ++_nested_level;
-        check_nested_level();
-        maybe_yield();
-        return handler_base::StartObject();
-    }
-
-    bool EndObject(rapidjson::SizeType elements_count = 0) {
-        --_nested_level;
-        return handler_base::EndObject(elements_count);
-    }
-
-    bool StartArray() {
-        ++_nested_level;
-        check_nested_level();
-        maybe_yield();
-        return handler_base::StartArray();
-    }
-
-    bool EndArray(rapidjson::SizeType elements_count = 0) {
-        --_nested_level;
-        return handler_base::EndArray(elements_count);
-    }
-
-    bool Null()                 { maybe_yield(); return handler_base::Null(); }
-    bool Bool(bool b)           { maybe_yield(); return handler_base::Bool(b); }
-    bool Int(int i)             { maybe_yield(); return handler_base::Int(i); }
-    bool Uint(unsigned u)       { maybe_yield(); return handler_base::Uint(u); }
-    bool Int64(int64_t i64)     { maybe_yield(); return handler_base::Int64(i64); }
-    bool Uint64(uint64_t u64)   { maybe_yield(); return handler_base::Uint64(u64); }
-    bool Double(double d)       { maybe_yield(); return handler_base::Double(d); }
-    bool String(const value::Ch* str, size_t length, bool copy = false) { maybe_yield(); return handler_base::String(str, length, copy); }
-    bool Key(const value::Ch* str, size_t length, bool copy = false) { maybe_yield(); return handler_base::Key(str, length, copy); }
-
-
-protected:
-    static void maybe_yield() {
-        if constexpr (EnableYield) {
-            thread::maybe_yield();
-        }
-    }
-
-    void check_nested_level() const {
-        if (RAPIDJSON_UNLIKELY(_nested_level > _max_nested_level)) {
-            throw rjson::error(format("Max nested level reached: {}", _max_nested_level));
-        }
-    }
-};
-
-std::string print(const rjson::value& value) {
-    string_buffer buffer;
-    guarded_yieldable_json_handler<writer, false> writer(buffer, 39);
-    value.Accept(writer);
-    return std::string(buffer.GetString());
-}
-
-rjson::value copy(const rjson::value& value) {
-    return rjson::value(value, the_allocator);
-}
-
-rjson::value parse(std::string_view str) {
-    guarded_yieldable_json_handler<document, false> d(39);
-    d.Parse(str.data(), str.size());
-    if (d.HasParseError()) {
-        throw rjson::error(format("Parsing JSON failed: {}", GetParseError_En(d.GetParseError())));
-    }
-    rjson::value& v = d;
-    return std::move(v);
-}
-
-rjson::value parse_yieldable(std::string_view str) {
-    guarded_yieldable_json_handler<document, true> d(39);
-    d.Parse(str.data(), str.size());
-    if (d.HasParseError()) {
-        throw rjson::error(format("Parsing JSON failed: {}", GetParseError_En(d.GetParseError())));
-    }
-    rjson::value& v = d;
-    return std::move(v);
-}
-
-rjson::value& get(rjson::value& value, std::string_view name) {
-    // Although FindMember() has a variant taking a StringRef, it ignores the
-    // given length (see https://github.com/Tencent/rapidjson/issues/1649).
-    // Luckily, the variant taking a GenericValue doesn't share this bug,
-    // and we can create a string GenericValue without copying the string.
-    auto member_it = value.FindMember(rjson::value(name.data(), name.size()));
-    if (member_it != value.MemberEnd())
-        return member_it->value;
-    else {
-        throw rjson::error(format("JSON parameter {} not found", name));
-    }
-}
-
-const rjson::value& get(const rjson::value& value, std::string_view name) {
-    auto member_it = value.FindMember(rjson::value(name.data(), name.size()));
-    if (member_it != value.MemberEnd())
-        return member_it->value;
-    else {
-        throw rjson::error(format("JSON parameter {} not found", name));
-    }
-}
-
-rjson::value from_string(const std::string& str) {
-    return rjson::value(str.c_str(), str.size(), the_allocator);
-}
-
-rjson::value from_string(const sstring& str) {
-    return rjson::value(str.c_str(), str.size(), the_allocator);
-}
-
-rjson::value from_string(const char* str, size_t size) {
-    return rjson::value(str, size, the_allocator);
-}
-
-rjson::value from_string(std::string_view view) {
-    return rjson::value(view.data(), view.size(), the_allocator);
-}
-
-const rjson::value* find(const rjson::value& value, std::string_view name) {
-    // Although FindMember() has a variant taking a StringRef, it ignores the
-    // given length (see https://github.com/Tencent/rapidjson/issues/1649).
-    // Luckily, the variant taking a GenericValue doesn't share this bug,
-    // and we can create a string GenericValue without copying the string.
-    auto member_it = value.FindMember(rjson::value(name.data(), name.size()));
-    return member_it != value.MemberEnd() ? &member_it->value : nullptr;
-}
-
-rjson::value* find(rjson::value& value, std::string_view name) {
-    auto member_it = value.FindMember(rjson::value(name.data(), name.size()));
-    return member_it != value.MemberEnd() ? &member_it->value : nullptr;
-}
-
-bool remove_member(rjson::value& value, std::string_view name) {
-    // Although RemoveMember() has a variant taking a StringRef, it ignores
-    // given length (see https://github.com/Tencent/rapidjson/issues/1649).
-    // Luckily, the variant taking a GenericValue doesn't share this bug,
-    // and we can create a string GenericValue without copying the string.
-    return value.RemoveMember(rjson::value(name.data(), name.size()));
-}
-
-void set_with_string_name(rjson::value& base, const std::string& name, rjson::value&& member) {
-    base.AddMember(rjson::value(name.c_str(), name.size(), the_allocator), std::move(member), the_allocator);
-}
-
-void set_with_string_name(rjson::value& base, std::string_view name, rjson::value&& member) {
-    base.AddMember(rjson::value(name.data(), name.size(), the_allocator), std::move(member), the_allocator);
-}
-
-void set_with_string_name(rjson::value& base, const std::string& name, rjson::string_ref_type member) {
-    base.AddMember(rjson::value(name.c_str(), name.size(), the_allocator), rjson::value(member), the_allocator);
-}
-
-void set_with_string_name(rjson::value& base, std::string_view name, rjson::string_ref_type member) {
-    base.AddMember(rjson::value(name.data(), name.size(), the_allocator), rjson::value(member), the_allocator);
-}
-
-void set(rjson::value& base, rjson::string_ref_type name, rjson::value&& member) {
-    base.AddMember(name, std::move(member), the_allocator);
-}
-
-void set(rjson::value& base, rjson::string_ref_type name, rjson::string_ref_type member) {
-    base.AddMember(name, rjson::value(member), the_allocator);
-}
-
-void push_back(rjson::value& base_array, rjson::value&& item) {
-    base_array.PushBack(std::move(item), the_allocator);
-
-}
-
-bool single_value_comp::operator()(const rjson::value& r1, const rjson::value& r2) const {
-   auto r1_type = r1.GetType();
-   auto r2_type = r2.GetType();
-
-   // null is the smallest type and compares with every other type, nothing is lesser than null
-   if (r1_type == rjson::type::kNullType || r2_type == rjson::type::kNullType) {
-       return r1_type < r2_type;
-   }
-   // only null, true, and false are comparable with each other, other types are not compatible
-   if (r1_type != r2_type) {
-       if (r1_type > rjson::type::kTrueType || r2_type > rjson::type::kTrueType) {
-           throw rjson::error(format("Types are not comparable: {} {}", r1, r2));
-       }
-   }
-
-   switch (r1_type) {
-   case rjson::type::kNullType:
-       // fall-through
-   case rjson::type::kFalseType:
-       // fall-through
-   case rjson::type::kTrueType:
-       return r1_type < r2_type;
-   case rjson::type::kObjectType:
-       throw rjson::error("Object type comparison is not supported");
-   case rjson::type::kArrayType:
-       throw rjson::error("Array type comparison is not supported");
-   case rjson::type::kStringType: {
-       const size_t r1_len = r1.GetStringLength();
-       const size_t r2_len = r2.GetStringLength();
-       size_t len = std::min(r1_len, r2_len);
-       int result = std::strncmp(r1.GetString(), r2.GetString(), len);
-       return result < 0 || (result == 0 && r1_len < r2_len);
-   }
-   case rjson::type::kNumberType: {
-       if (r1.IsInt() && r2.IsInt()) {
-           return r1.GetInt() < r2.GetInt();
-       } else if (r1.IsUint() && r2.IsUint()) {
-           return r1.GetUint() < r2.GetUint();
-       } else if (r1.IsInt64() && r2.IsInt64()) {
-           return r1.GetInt64() < r2.GetInt64();
-       } else if (r1.IsUint64() && r2.IsUint64()) {
-           return r1.GetUint64() < r2.GetUint64();
-       } else {
-           // it's safe to call GetDouble() on any number type
-           return r1.GetDouble() < r2.GetDouble();
-       }
-   }
-   default:
-       return false;
-   }
-}
-
-} // end namespace rjson
-
-std::ostream& std::operator<<(std::ostream& os, const rjson::value& v) {
-    return os << rjson::print(v);
-}

alternator/rjson.hh

@@ -1,177 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-/*
- * rjson is a wrapper over rapidjson library, providing fast JSON parsing and generation.
- *
- * rapidjson has strict copy elision policies, which, among other things, involves
- * using provided char arrays without copying them and allows copying objects only explicitly.
- * As such, one should be careful when passing strings with limited liveness
- * (e.g. data underneath local std::strings) to rjson functions, because created JSON objects
- * may end up relying on dangling char pointers. All rjson functions that create JSONs from strings
- * by rjson have both APIs for string_ref_type (more optimal, used when the string is known to live
- * at least as long as the object, e.g. a static char array) and for std::strings. The more optimal
- * variants should be used *only* if the liveness of the string is guaranteed, otherwise it will
- * result in undefined behaviour.
- * Also, bear in mind that methods exposed by rjson::value are generic, but some of them
- * work fine only for specific types. In case the type does not match, an rjson::error will be thrown.
- * Examples of such mismatched usages is calling MemberCount() on a JSON value not of object type
- * or calling Size() on a non-array value.
- */
-
-#include <string>
-#include <stdexcept>
-
-namespace rjson {
-class error : public std::exception {
-    std::string _msg;
-public:
-    error() = default;
-    error(const std::string& msg) : _msg(msg) {}
-
-    virtual const char* what() const noexcept override { return _msg.c_str(); }
-};
-}
-
-// rapidjson configuration macros
-#define RAPIDJSON_HAS_STDSTRING 1
-// Default rjson policy is to use assert() - which is dangerous for two reasons:
-// 1. assert() can be turned off with -DNDEBUG
-// 2. assert() crashes a program
-// Fortunately, the default policy can be overridden, and so rapidjson errors will
-// throw an rjson::error exception instead.
-#define RAPIDJSON_ASSERT(x) do { if (!(x)) throw rjson::error(std::string("JSON error: condition not met: ") + #x); } while (0)
-
-#include <rapidjson/document.h>
-#include <rapidjson/writer.h>
-#include <rapidjson/stringbuffer.h>
-#include <rapidjson/error/en.h>
-#include <seastar/core/sstring.hh>
-#include "seastarx.hh"
-
-namespace rjson {
-
-using allocator = rapidjson::CrtAllocator;
-using encoding = rapidjson::UTF8<>;
-using document = rapidjson::GenericDocument<encoding, allocator>;
-using value = rapidjson::GenericValue<encoding, allocator>;
-using string_ref_type = value::StringRefType;
-using string_buffer = rapidjson::GenericStringBuffer<encoding>;
-using writer = rapidjson::Writer<string_buffer, encoding>;
-using type = rapidjson::Type;
-
-// Returns an object representing JSON's null
-inline rjson::value null_value() {
-    return rjson::value(rapidjson::kNullType);
-}
-
-// Returns an empty JSON object - {}
-inline rjson::value empty_object() {
-    return rjson::value(rapidjson::kObjectType);
-}
-
-// Returns an empty JSON array - []
-inline rjson::value empty_array() {
-    return rjson::value(rapidjson::kArrayType);
-}
-
-// Returns an empty JSON string - ""
-inline rjson::value empty_string() {
-    return rjson::value(rapidjson::kStringType);
-}
-
-// Convert the JSON value to a string with JSON syntax, the opposite of parse().
-// The representation is dense - without any redundant indentation.
-std::string print(const rjson::value& value);
-
-// Returns a string_view to the string held in a JSON value (which is
-// assumed to hold a string, i.e., v.IsString() == true). This is a view
-// to the existing data - no copying is done.
-inline std::string_view to_string_view(const rjson::value& v) {
-    return std::string_view(v.GetString(), v.GetStringLength());
-}
-
-// Copies given JSON value - involves allocation
-rjson::value copy(const rjson::value& value);
-
-// Parses a JSON value from given string or raw character array.
-// The string/char array liveness does not need to be persisted,
-// as parse() will allocate member names and values.
-// Throws rjson::error if parsing failed.
-rjson::value parse(std::string_view str);
-// Needs to be run in thread context
-rjson::value parse_yieldable(std::string_view str);
-
-// Creates a JSON value (of JSON string type) out of internal string representations.
-// The string value is copied, so str's liveness does not need to be persisted.
-rjson::value from_string(const std::string& str);
-rjson::value from_string(const sstring& str);
-rjson::value from_string(const char* str, size_t size);
-rjson::value from_string(std::string_view view);
-
-// Returns a pointer to JSON member if it exists, nullptr otherwise
-rjson::value* find(rjson::value& value, std::string_view name);
-const rjson::value* find(const rjson::value& value, std::string_view name);
-
-// Returns a reference to JSON member if it exists, throws otherwise
-rjson::value& get(rjson::value& value, std::string_view name);
-const rjson::value& get(const rjson::value& value, std::string_view name);
-
-// Sets a member in given JSON object by moving the member - allocates the name.
-// Throws if base is not a JSON object.
-void set_with_string_name(rjson::value& base, const std::string& name, rjson::value&& member);
-void set_with_string_name(rjson::value& base, std::string_view name, rjson::value&& member);
-
-// Sets a string member in given JSON object by assigning its reference - allocates the name.
-// NOTICE: member string liveness must be ensured to be at least as long as base's.
-// Throws if base is not a JSON object.
-void set_with_string_name(rjson::value& base, const std::string& name, rjson::string_ref_type member);
-void set_with_string_name(rjson::value& base, std::string_view name, rjson::string_ref_type member);
-
-// Sets a member in given JSON object by moving the member.
-// NOTICE: name liveness must be ensured to be at least as long as base's.
-// Throws if base is not a JSON object.
-void set(rjson::value& base, rjson::string_ref_type name, rjson::value&& member);
-
-// Sets a string member in given JSON object by assigning its reference.
-// NOTICE: name liveness must be ensured to be at least as long as base's.
-// NOTICE: member liveness must be ensured to be at least as long as base's.
-// Throws if base is not a JSON object.
-void set(rjson::value& base, rjson::string_ref_type name, rjson::string_ref_type member);
-
-// Adds a value to a JSON list by moving the item to its end.
-// Throws if base_array is not a JSON array.
-void push_back(rjson::value& base_array, rjson::value&& item);
-
-// Remove a member from a JSON object. Throws if value isn't an object.
-bool remove_member(rjson::value& value, std::string_view name);
-
-struct single_value_comp {
-    bool operator()(const rjson::value& r1, const rjson::value& r2) const;
-};
-
-} // end namespace rjson
-
-namespace std {
-std::ostream& operator<<(std::ostream& os, const rjson::value& v);
-}

alternator/rmw_operation.hh

@@ -1,124 +0,0 @@
-/*
- * Copyright 2020 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-#include <seastarx.hh>
-#include <service/storage_proxy.hh>
-#include <service/storage_proxy.hh>
-#include "rjson.hh"
-#include "executor.hh"
-
-namespace alternator {
-
-// An rmw_operation encapsulates the common logic of all the item update
-// operations which may involve a read of the item before the write
-// (so-called Read-Modify-Write operations). These operations include PutItem,
-// UpdateItem and DeleteItem: All of these may be conditional operations (the
-// "Expected" parameter) which requir a read before the write, and UpdateItem
-// may also have an update expression which refers to the item's old value.
-//
-// The code below supports running the read and the write together as one
-// transaction using LWT (this is why rmw_operation is a subclass of
-// cas_request, as required by storage_proxy::cas()), but also has optional
-// modes not using LWT.
-class rmw_operation : public service::cas_request, public enable_shared_from_this<rmw_operation> {
-public:
-    // The following options choose which mechanism to use for isolating
-    // parallel write operations:
-    // * The FORBID_RMW option forbids RMW (read-modify-write) operations
-    //   such as conditional updates. For the remaining write-only
-    //   operations, ordinary quorum writes are isolated enough.
-    // * The LWT_ALWAYS option always uses LWT (lightweight transactions)
-    //   for any write operation - whether or not it also has a read.
-    // * The LWT_RMW_ONLY option uses LWT only for RMW operations, and uses
-    //   ordinary quorum writes for write-only operations.
-    //   This option is not safe if the user may send both RMW and write-only
-    //   operations on the same item.
-    // * The UNSAFE_RMW option does read-modify-write operations as separate
-    //   read and write. It is unsafe - concurrent RMW operations are not
-    //   isolated at all. This option will likely be removed in the future.
-    enum class write_isolation {
-        FORBID_RMW, LWT_ALWAYS, LWT_RMW_ONLY, UNSAFE_RMW
-    };
-    static constexpr auto WRITE_ISOLATION_TAG_KEY = "system:write_isolation";
-
-    static write_isolation get_write_isolation_for_schema(schema_ptr schema);
-
-protected:
-    // The full request JSON
-    rjson::value _request;
-    // All RMW operations involve a single item with a specific partition
-    // and optional clustering key, in a single table, so the following
-    // information is common to all of them:
-    schema_ptr _schema;
-    partition_key _pk = partition_key::make_empty();
-    clustering_key _ck = clustering_key::make_empty();
-    write_isolation _write_isolation;
-
-    // All RMW operations can have a ReturnValues parameter from the following
-    // choices. But note that only UpdateItem actually supports all of them:
-    enum class returnvalues {
-        NONE, ALL_OLD, UPDATED_OLD, ALL_NEW, UPDATED_NEW
-    } _returnvalues;
-    static returnvalues parse_returnvalues(const rjson::value& request);
-    // When _returnvalues != NONE, apply() should store here, in JSON form,
-    // the values which are to be returned in the "Attributes" field.
-    // The default null JSON means do not return an Attributes field at all.
-    // This field is marked "mutable" so that the const apply() can modify
-    // it (see explanation below), but note that because apply() may be
-    // called more than once, if apply() will sometimes set this field it
-    // must set it (even if just to the default empty value) every time.
-    mutable rjson::value _return_attributes;
-public:
-    // The constructor of a rmw_operation subclass should parse the request
-    // and try to discover as many input errors as it can before really
-    // attempting the read or write operations.
-    rmw_operation(service::storage_proxy& proxy, rjson::value&& request);
-    // rmw_operation subclasses (update_item_operation, put_item_operation
-    // and delete_item_operation) shall implement an apply() function which
-    // takes the previous value of the item (if it was read) and creates the
-    // write mutation. If the previous value of item does not pass the needed
-    // conditional expression, apply() should return an empty optional.
-    // apply() may throw if it encounters input errors not discovered during
-    // the constructor.
-    // apply() may be called more than once in case of contention, so it must
-    // not change the state saved in the object (issue #7218 was caused by
-    // violating this). We mark apply() "const" to let the compiler validate
-    // this for us. The output-only field _return_attributes is marked
-    // "mutable" above so that apply() can still write to it.
-    virtual std::optional<mutation> apply(std::unique_ptr<rjson::value> previous_item, api::timestamp_type ts) const = 0;
-    // Convert the above apply() into the signature needed by cas_request:
-    virtual std::optional<mutation> apply(query::result& qr, const query::partition_slice& slice, api::timestamp_type ts) override;
-    virtual ~rmw_operation() = default;
-    schema_ptr schema() const { return _schema; }
-    const rjson::value& request() const { return _request; }
-    rjson::value&& move_request() && { return std::move(_request); }
-    future<executor::request_return_type> execute(service::storage_proxy& proxy,
-            service::client_state& client_state,
-            tracing::trace_state_ptr trace_state,
-            service_permit permit,
-            bool needs_read_before_write,
-            stats& stats);
-    std::optional<shard_id> shard_for_execute(bool needs_read_before_write);
-};
-
-} // namespace alternator

alternator/serialization.cc

@@ -1,268 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "base64.hh"
-#include "log.hh"
-#include "serialization.hh"
-#include "error.hh"
-#include "rapidjson/writer.h"
-#include "concrete_types.hh"
-#include "cql3/type_json.hh"
-
-static logging::logger slogger("alternator-serialization");
-
-namespace alternator {
-
-type_info type_info_from_string(std::string type) {
-    static thread_local const std::unordered_map<std::string, type_info> type_infos = {
-        {"S", {alternator_type::S, utf8_type}},
-        {"B", {alternator_type::B, bytes_type}},
-        {"BOOL", {alternator_type::BOOL, boolean_type}},
-        {"N", {alternator_type::N, decimal_type}}, //FIXME: Replace with custom Alternator type when implemented
-    };
-    auto it = type_infos.find(type);
-    if (it == type_infos.end()) {
-        return {alternator_type::NOT_SUPPORTED_YET, utf8_type};
-    }
-    return it->second;
-}
-
-type_representation represent_type(alternator_type atype) {
-    static thread_local const std::unordered_map<alternator_type, type_representation> type_representations = {
-        {alternator_type::S, {"S", utf8_type}},
-        {alternator_type::B, {"B", bytes_type}},
-        {alternator_type::BOOL, {"BOOL", boolean_type}},
-        {alternator_type::N, {"N", decimal_type}}, //FIXME: Replace with custom Alternator type when implemented
-    };
-    auto it = type_representations.find(atype);
-    if (it == type_representations.end()) {
-        throw std::runtime_error(format("Unknown alternator type {}", int8_t(atype)));
-    }
-    return it->second;
-}
-
-struct from_json_visitor {
-    const rjson::value& v;
-    bytes_ostream& bo;
-
-    void operator()(const reversed_type_impl& t) const { visit(*t.underlying_type(), from_json_visitor{v, bo}); };
-    void operator()(const string_type_impl& t) {
-        bo.write(t.from_string(sstring_view(v.GetString(), v.GetStringLength())));
-    }
-    void operator()(const bytes_type_impl& t) const {
-        bo.write(base64_decode(v));
-    }
-    void operator()(const boolean_type_impl& t) const {
-        bo.write(boolean_type->decompose(v.GetBool()));
-    }
-    void operator()(const decimal_type_impl& t) const {
-        bo.write(t.from_string(sstring_view(v.GetString(), v.GetStringLength())));
-    }
-    // default
-    void operator()(const abstract_type& t) const {
-        bo.write(from_json_object(t, Json::Value(rjson::print(v)), cql_serialization_format::internal()));
-    }
-};
-
-bytes serialize_item(const rjson::value& item) {
-    if (item.IsNull() || item.MemberCount() != 1) {
-        throw api_error("ValidationException", format("An item can contain only one attribute definition: {}", item));
-    }
-    auto it = item.MemberBegin();
-    type_info type_info = type_info_from_string(it->name.GetString()); // JSON keys are guaranteed to be strings
-
-    if (type_info.atype == alternator_type::NOT_SUPPORTED_YET) {
-        slogger.trace("Non-optimal serialization of type {}", it->name.GetString());
-        return bytes{int8_t(type_info.atype)} + to_bytes(rjson::print(item));
-    }
-
-    bytes_ostream bo;
-    bo.write(bytes{int8_t(type_info.atype)});
-    visit(*type_info.dtype, from_json_visitor{it->value, bo});
-
-    return bytes(bo.linearize());
-}
-
-struct to_json_visitor {
-    rjson::value& deserialized;
-    const std::string& type_ident;
-    bytes_view bv;
-
-    void operator()(const reversed_type_impl& t) const { visit(*t.underlying_type(), to_json_visitor{deserialized, type_ident, bv}); };
-    void operator()(const decimal_type_impl& t) const {
-        auto s = to_json_string(*decimal_type, bytes(bv));
-        //FIXME(sarna): unnecessary copy
-        rjson::set_with_string_name(deserialized, type_ident, rjson::from_string(s));
-    }
-    void operator()(const string_type_impl& t) {
-        rjson::set_with_string_name(deserialized, type_ident, rjson::from_string(reinterpret_cast<const char *>(bv.data()), bv.size()));
-    }
-    void operator()(const bytes_type_impl& t) const {
-        std::string b64 = base64_encode(bv);
-        rjson::set_with_string_name(deserialized, type_ident, rjson::from_string(b64));
-    }
-    // default
-    void operator()(const abstract_type& t) const {
-        rjson::set_with_string_name(deserialized, type_ident, rjson::parse(t.to_string(bytes(bv))));
-    }
-};
-
-rjson::value deserialize_item(bytes_view bv) {
-    rjson::value deserialized(rapidjson::kObjectType);
-    if (bv.empty()) {
-        throw api_error("ValidationException", "Serialized value empty");
-    }
-
-    alternator_type atype = alternator_type(bv[0]);
-    bv.remove_prefix(1);
-
-    if (atype == alternator_type::NOT_SUPPORTED_YET) {
-        slogger.trace("Non-optimal deserialization of alternator type {}", int8_t(atype));
-        return rjson::parse(std::string_view(reinterpret_cast<const char *>(bv.data()), bv.size()));
-    }
-    type_representation type_representation = represent_type(atype);
-    visit(*type_representation.dtype, to_json_visitor{deserialized, type_representation.ident, bv});
-
-    return deserialized;
-}
-
-std::string type_to_string(data_type type) {
-    static thread_local std::unordered_map<data_type, std::string> types = {
-        {utf8_type, "S"},
-        {bytes_type, "B"},
-        {boolean_type, "BOOL"},
-        {decimal_type, "N"}, // FIXME: use a specialized Alternator number type instead of the general decimal_type
-    };
-    auto it = types.find(type);
-    if (it == types.end()) {
-        throw std::runtime_error(format("Unknown type {}", type->name()));
-    }
-    return it->second;
-}
-
-bytes get_key_column_value(const rjson::value& item, const column_definition& column) {
-    std::string column_name = column.name_as_text();
-    const rjson::value* key_typed_value = rjson::find(item, column_name);
-    if (!key_typed_value) {
-        throw api_error("ValidationException", format("Key column {} not found", column_name));
-    }
-    return get_key_from_typed_value(*key_typed_value, column);
-}
-
-// Parses the JSON encoding for a key value, which is a map with a single
-// entry, whose key is the type (expected to match the key column's type)
-// and the value is the encoded value.
-bytes get_key_from_typed_value(const rjson::value& key_typed_value, const column_definition& column) {
-    if (!key_typed_value.IsObject() || key_typed_value.MemberCount() != 1 ||
-            !key_typed_value.MemberBegin()->value.IsString()) {
-        throw api_error("ValidationException",
-                format("Malformed value object for key column {}: {}",
-                        column.name_as_text(), key_typed_value));
-    }
-
-    auto it = key_typed_value.MemberBegin();
-    if (it->name != type_to_string(column.type)) {
-        throw api_error("ValidationException",
-                format("Type mismatch: expected type {} for key column {}, got type {}",
-                        type_to_string(column.type), column.name_as_text(), it->name.GetString()));
-    }
-    if (column.type == bytes_type) {
-        return base64_decode(it->value);
-    } else {
-        return column.type->from_string(rjson::to_string_view(it->value));
-    }
-
-}
-
-rjson::value json_key_column_value(bytes_view cell, const column_definition& column) {
-    if (column.type == bytes_type) {
-        std::string b64 = base64_encode(cell);
-        return rjson::from_string(b64);
-    } if (column.type == utf8_type) {
-        return rjson::from_string(std::string(reinterpret_cast<const char*>(cell.data()), cell.size()));
-    } else if (column.type == decimal_type) {
-        // FIXME: use specialized Alternator number type, not the more
-        // general "decimal_type". A dedicated type can be more efficient
-        // in storage space and in parsing speed.
-        auto s = to_json_string(*decimal_type, bytes(cell));
-        return rjson::from_string(s);
-    } else {
-        // We shouldn't get here, we shouldn't see such key columns.
-        throw std::runtime_error(format("Unexpected key type: {}", column.type->name()));
-    }
-}
-
-
-partition_key pk_from_json(const rjson::value& item, schema_ptr schema) {
-    std::vector<bytes> raw_pk;
-    // FIXME: this is a loop, but we really allow only one partition key column.
-    for (const column_definition& cdef : schema->partition_key_columns()) {
-        bytes raw_value = get_key_column_value(item, cdef);
-        raw_pk.push_back(std::move(raw_value));
-    }
-   return partition_key::from_exploded(raw_pk);
-}
-
-clustering_key ck_from_json(const rjson::value& item, schema_ptr schema) {
-    if (schema->clustering_key_size() == 0) {
-        return clustering_key::make_empty();
-    }
-    std::vector<bytes> raw_ck;
-    // FIXME: this is a loop, but we really allow only one clustering key column.
-    for (const column_definition& cdef : schema->clustering_key_columns()) {
-        bytes raw_value = get_key_column_value(item,  cdef);
-        raw_ck.push_back(std::move(raw_value));
-    }
-
-    return clustering_key::from_exploded(raw_ck);
-}
-
-big_decimal unwrap_number(const rjson::value& v, std::string_view diagnostic) {
-    if (!v.IsObject() || v.MemberCount() != 1) {
-        throw api_error("ValidationException", format("{}: invalid number object", diagnostic));
-    }
-    auto it = v.MemberBegin();
-    if (it->name != "N") {
-        throw api_error("ValidationException", format("{}: expected number, found type '{}'", diagnostic, it->name));
-    }
-    if (it->value.IsNumber()) {
-         // FIXME(sarna): should use big_decimal constructor with numeric values directly:
-        return big_decimal(rjson::print(it->value));
-    }
-    if (!it->value.IsString()) {
-        throw api_error("ValidationException", format("{}: improperly formatted number constant", diagnostic));
-    }
-    return big_decimal(it->value.GetString());
-}
-
-const std::pair<std::string, const rjson::value*> unwrap_set(const rjson::value& v) {
-    if (!v.IsObject() || v.MemberCount() != 1) {
-        return {"", nullptr};
-    }
-    auto it = v.MemberBegin();
-    const std::string it_key = it->name.GetString();
-    if (it_key != "SS" && it_key != "BS" && it_key != "NS") {
-        return {"", nullptr};
-    }
-    return std::make_pair(it_key, &(it->value));
-}
-
-}

alternator/serialization.hh

@@ -1,72 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-#include <string>
-#include <string_view>
-#include "types.hh"
-#include "schema_fwd.hh"
-#include "keys.hh"
-#include "rjson.hh"
-#include "utils/big_decimal.hh"
-
-namespace alternator {
-
-enum class alternator_type : int8_t {
-    S, B, BOOL, N, NOT_SUPPORTED_YET
-};
-
-struct type_info {
-    alternator_type atype;
-    data_type dtype;
-};
-
-struct type_representation {
-    std::string ident;
-    data_type dtype;
-};
-
-type_info type_info_from_string(std::string type);
-type_representation represent_type(alternator_type atype);
-
-bytes serialize_item(const rjson::value& item);
-rjson::value deserialize_item(bytes_view bv);
-
-std::string type_to_string(data_type type);
-
-bytes get_key_column_value(const rjson::value& item, const column_definition& column);
-bytes get_key_from_typed_value(const rjson::value& key_typed_value, const column_definition& column);
-rjson::value json_key_column_value(bytes_view cell, const column_definition& column);
-
-partition_key pk_from_json(const rjson::value& item, schema_ptr schema);
-clustering_key ck_from_json(const rjson::value& item, schema_ptr schema);
-
-// If v encodes a number (i.e., it is a {"N": [...]}, returns an object representing it.  Otherwise,
-// raises ValidationException with diagnostic.
-big_decimal unwrap_number(const rjson::value& v, std::string_view diagnostic);
-
-// Check if a given JSON object encodes a set (i.e., it is a {"SS": [...]}, or "NS", "BS"
-// and returns set's type and a pointer to that set. If the object does not encode a set,
-// returned value is {"", nullptr}
-const std::pair<std::string, const rjson::value*> unwrap_set(const rjson::value& v);
-
-}

alternator/server.cc

@@ -1,483 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "alternator/server.hh"
-#include "log.hh"
-#include <seastar/http/function_handlers.hh>
-#include <seastar/json/json_elements.hh>
-#include <seastarx.hh>
-#include "error.hh"
-#include "rjson.hh"
-#include "auth.hh"
-#include <cctype>
-#include "cql3/query_processor.hh"
-#include "service/storage_service.hh"
-#include "utils/overloaded_functor.hh"
-
-static logging::logger slogger("alternator-server");
-
-using namespace httpd;
-
-namespace alternator {
-
-static constexpr auto TARGET = "X-Amz-Target";
-
-inline std::vector<std::string_view> split(std::string_view text, char separator) {
-    std::vector<std::string_view> tokens;
-    if (text == "") {
-        return tokens;
-    }
-
-    while (true) {
-        auto pos = text.find_first_of(separator);
-        if (pos != std::string_view::npos) {
-            tokens.emplace_back(text.data(), pos);
-            text.remove_prefix(pos + 1);
-        } else {
-            tokens.emplace_back(text);
-            break;
-        }
-    }
-    return tokens;
-}
-
-// DynamoDB HTTP error responses are structured as follows
-// https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Programming.Errors.html
-// Our handlers throw an exception to report an error. If the exception
-// is of type alternator::api_error, it unwrapped and properly reported to
-// the user directly. Other exceptions are unexpected, and reported as
-// Internal Server Error.
-class api_handler : public handler_base {
-public:
-    api_handler(const std::function<future<executor::request_return_type>(std::unique_ptr<request> req)>& _handle) : _f_handle(
-         [this, _handle](std::unique_ptr<request> req, std::unique_ptr<reply> rep) {
-         return seastar::futurize_apply(_handle, std::move(req)).then_wrapped([this, rep = std::move(rep)](future<executor::request_return_type> resf) mutable {
-             if (resf.failed()) {
-                 // Exceptions of type api_error are wrapped as JSON and
-                 // returned to the client as expected. Other types of
-                 // exceptions are unexpected, and returned to the user
-                 // as an internal server error:
-                 api_error ret;
-                 try {
-                     resf.get();
-                 } catch (api_error &ae) {
-                     ret = ae;
-                 } catch (rjson::error & re) {
-                     ret = api_error("ValidationException", re.what());
-                 } catch (...) {
-                     ret = api_error(
-                             "Internal Server Error",
-                             format("Internal server error: {}", std::current_exception()),
-                             reply::status_type::internal_server_error);
-                 }
-                 generate_error_reply(*rep, ret);
-                 return make_ready_future<std::unique_ptr<reply>>(std::move(rep));
-             }
-             auto res = resf.get0();
-             std::visit(overloaded_functor {
-                 [&] (const json::json_return_type& json_return_value) {
-                     slogger.trace("api_handler success case");
-                     if (json_return_value._body_writer) {
-                         rep->write_body("json", std::move(json_return_value._body_writer));
-                     } else {
-                         rep->_content += json_return_value._res;
-                     }
-                 },
-                 [&] (const api_error& err) {
-                     generate_error_reply(*rep, err);
-                 }
-             }, res);
-
-             return make_ready_future<std::unique_ptr<reply>>(std::move(rep));
-         });
-    }), _type("json") { }
-
-    api_handler(const api_handler&) = default;
-    future<std::unique_ptr<reply>> handle(const sstring& path,
-            std::unique_ptr<request> req, std::unique_ptr<reply> rep) override {
-        return _f_handle(std::move(req), std::move(rep)).then(
-                [this](std::unique_ptr<reply> rep) {
-                    rep->done(_type);
-                    return make_ready_future<std::unique_ptr<reply>>(std::move(rep));
-                });
-    }
-
-protected:
-    void generate_error_reply(reply& rep, const api_error& err) {
-        rep._content += "{\"__type\":\"com.amazonaws.dynamodb.v20120810#" + err._type + "\"," +
-                "\"message\":\"" + err._msg + "\"}";
-        rep._status = err._http_code;
-        slogger.trace("api_handler error case: {}", rep._content);
-    }
-
-    future_handler_function _f_handle;
-    sstring _type;
-};
-
-class gated_handler : public handler_base {
-    seastar::gate& _gate;
-public:
-    gated_handler(seastar::gate& gate) : _gate(gate) {}
-    virtual future<std::unique_ptr<reply>> do_handle(const sstring& path, std::unique_ptr<request> req, std::unique_ptr<reply> rep) = 0;
-    virtual future<std::unique_ptr<reply>> handle(const sstring& path, std::unique_ptr<request> req, std::unique_ptr<reply> rep) final override {
-        return with_gate(_gate, [this, &path, req = std::move(req), rep = std::move(rep)] () mutable {
-            return do_handle(path, std::move(req), std::move(rep));
-        });
-    }
-};
-
-class health_handler : public gated_handler {
-public:
-    health_handler(seastar::gate& pending_requests) : gated_handler(pending_requests) {}
-protected:
-    virtual future<std::unique_ptr<reply>> do_handle(const sstring& path, std::unique_ptr<request> req, std::unique_ptr<reply> rep) override {
-        rep->set_status(reply::status_type::ok);
-        rep->write_body("txt", format("healthy: {}", req->get_header("Host")));
-        return make_ready_future<std::unique_ptr<reply>>(std::move(rep));
-    }
-};
-
-class local_nodelist_handler : public gated_handler {
-public:
-    local_nodelist_handler(seastar::gate& pending_requests) : gated_handler(pending_requests) {}
-protected:
-    virtual future<std::unique_ptr<reply>> do_handle(const sstring& path, std::unique_ptr<request> req, std::unique_ptr<reply> rep) override {
-        rjson::value results = rjson::empty_array();
-        // It's very easy to get a list of all live nodes on the cluster,
-        // using gms::get_local_gossiper().get_live_members(). But getting
-        // just the list of live nodes in this DC needs more elaborate code:
-        sstring local_dc = locator::i_endpoint_snitch::get_local_snitch_ptr()->get_datacenter(
-                utils::fb_utilities::get_broadcast_address());
-        std::unordered_set<gms::inet_address> local_dc_nodes =
-                service::get_local_storage_service().get_token_metadata().
-                get_topology().get_datacenter_endpoints().at(local_dc);
-        for (auto& ip : local_dc_nodes) {
-            if (gms::get_local_gossiper().is_alive(ip)) {
-                rjson::push_back(results, rjson::from_string(ip.to_sstring()));
-            }
-        }
-        rep->set_status(reply::status_type::ok);
-        rep->set_content_type("json");
-        rep->_content = rjson::print(results);
-        return make_ready_future<std::unique_ptr<reply>>(std::move(rep));
-    }
-};
-
-future<> server::verify_signature(const request& req) {
-    if (!_enforce_authorization) {
-        slogger.debug("Skipping authorization");
-        return make_ready_future<>();
-    }
-    auto host_it = req._headers.find("Host");
-    if (host_it == req._headers.end()) {
-        throw api_error("InvalidSignatureException", "Host header is mandatory for signature verification");
-    }
-    auto authorization_it = req._headers.find("Authorization");
-    if (authorization_it == req._headers.end()) {
-        throw api_error("InvalidSignatureException", "Authorization header is mandatory for signature verification");
-    }
-    std::string host = host_it->second;
-    std::vector<std::string_view> credentials_raw = split(authorization_it->second, ' ');
-    std::string credential;
-    std::string user_signature;
-    std::string signed_headers_str;
-    std::vector<std::string_view> signed_headers;
-    for (std::string_view entry : credentials_raw) {
-        std::vector<std::string_view> entry_split = split(entry, '=');
-        if (entry_split.size() != 2) {
-            if (entry != "AWS4-HMAC-SHA256") {
-                throw api_error("InvalidSignatureException", format("Only AWS4-HMAC-SHA256 algorithm is supported. Found: {}", entry));
-            }
-            continue;
-        }
-        std::string_view auth_value = entry_split[1];
-        // Commas appear as an additional (quite redundant) delimiter
-        if (auth_value.back() == ',') {
-            auth_value.remove_suffix(1);
-        }
-        if (entry_split[0] == "Credential") {
-            credential = std::string(auth_value);
-        } else if (entry_split[0] == "Signature") {
-            user_signature = std::string(auth_value);
-        } else if (entry_split[0] == "SignedHeaders") {
-            signed_headers_str = std::string(auth_value);
-            signed_headers = split(auth_value, ';');
-            std::sort(signed_headers.begin(), signed_headers.end());
-        }
-    }
-    std::vector<std::string_view> credential_split = split(credential, '/');
-    if (credential_split.size() != 5) {
-        throw api_error("ValidationException", format("Incorrect credential information format: {}", credential));
-    }
-    std::string user(credential_split[0]);
-    std::string datestamp(credential_split[1]);
-    std::string region(credential_split[2]);
-    std::string service(credential_split[3]);
-
-    std::map<std::string_view, std::string_view> signed_headers_map;
-    for (const auto& header : signed_headers) {
-        signed_headers_map.emplace(header, std::string_view());
-    }
-    for (auto& header : req._headers) {
-        std::string header_str;
-        header_str.resize(header.first.size());
-        std::transform(header.first.begin(), header.first.end(), header_str.begin(), ::tolower);
-        auto it = signed_headers_map.find(header_str);
-        if (it != signed_headers_map.end()) {
-            it->second = std::string_view(header.second);
-        }
-    }
-
-    auto cache_getter = [] (std::string username) {
-        return get_key_from_roles(cql3::get_query_processor().local(), std::move(username));
-    };
-    return _key_cache.get_ptr(user, cache_getter).then([this, &req,
-                                                    user = std::move(user),
-                                                    host = std::move(host),
-                                                    datestamp = std::move(datestamp),
-                                                    signed_headers_str = std::move(signed_headers_str),
-                                                    signed_headers_map = std::move(signed_headers_map),
-                                                    region = std::move(region),
-                                                    service = std::move(service),
-                                                    user_signature = std::move(user_signature)] (key_cache::value_ptr key_ptr) {
-        std::string signature = get_signature(user, *key_ptr, std::string_view(host), req._method,
-                datestamp, signed_headers_str, signed_headers_map, req.content, region, service, "");
-
-        if (signature != std::string_view(user_signature)) {
-            _key_cache.remove(user);
-            throw api_error("UnrecognizedClientException", "The security token included in the request is invalid.");
-        }
-    });
-}
-
-future<executor::request_return_type> server::handle_api_request(std::unique_ptr<request>&& req) {
-    _executor._stats.total_operations++;
-    sstring target = req->get_header(TARGET);
-    std::vector<std::string_view> split_target = split(target, '.');
-    //NOTICE(sarna): Target consists of Dynamo API version followed by a dot '.' and operation type (e.g. CreateTable)
-    std::string op = split_target.empty() ? std::string() : std::string(split_target.back());
-    slogger.trace("Request: {} {}", op, req->content);
-    return verify_signature(*req).then([this, op, req = std::move(req)] () mutable {
-        auto callback_it = _callbacks.find(op);
-        if (callback_it == _callbacks.end()) {
-            _executor._stats.unsupported_operations++;
-            throw api_error("UnknownOperationException",
-                    format("Unsupported operation {}", op));
-        }
-        return with_gate(_pending_requests, [this, callback_it = std::move(callback_it), op = std::move(op), req = std::move(req)] () mutable {
-            //FIXME: Client state can provide more context, e.g. client's endpoint address
-            // We use unique_ptr because client_state cannot be moved or copied
-            return do_with(std::make_unique<executor::client_state>(executor::client_state::internal_tag()),
-                    [this, callback_it = std::move(callback_it), op = std::move(op), req = std::move(req)] (std::unique_ptr<executor::client_state>& client_state) mutable {
-                tracing::trace_state_ptr trace_state = executor::maybe_trace_query(*client_state, op, req->content);
-                tracing::trace(trace_state, op);
-                // JSON parsing can allocate up to roughly 2x the size of the raw document, + a couple of bytes for maintenance.
-                // FIXME: by this time, the whole HTTP request was already read, so some memory is already occupied.
-                // Once HTTP allows working on streams, we should grab the permit *before* reading the HTTP payload.
-                size_t mem_estimate = req->content.size() * 3 + 8000;
-                auto units_fut = get_units(*_memory_limiter, mem_estimate);
-                if (_memory_limiter->waiters()) {
-                    ++_executor._stats.requests_blocked_memory;
-                }
-                return units_fut.then([this, callback_it = std::move(callback_it), &client_state, trace_state, req = std::move(req)] (semaphore_units<> units) mutable {
-                    return _json_parser.parse(req->content).then([this, callback_it = std::move(callback_it), &client_state, trace_state,
-                            units = std::move(units), req = std::move(req)] (rjson::value json_request) mutable {
-                        return callback_it->second(_executor, *client_state, trace_state, make_service_permit(std::move(units)), std::move(json_request), std::move(req)).finally([trace_state] {});
-                    });
-                });
-            });
-        });
-    });
-}
-
-void server::set_routes(routes& r) {
-    api_handler* req_handler = new api_handler([this] (std::unique_ptr<request> req) mutable {
-        return handle_api_request(std::move(req));
-    });
-
-    r.put(operation_type::POST, "/", req_handler);
-    r.put(operation_type::GET, "/", new health_handler(_pending_requests));
-    // The "/localnodes" request is a new Alternator feature, not supported by
-    // DynamoDB and not required for DynamoDB compatibility. It allows a
-    // client to enquire - using a trivial HTTP request without requiring
-    // authentication - the list of all live nodes in the same data center of
-    // the Alternator cluster. The client can use this list to balance its
-    // request load to all the nodes in the same geographical region.
-    // Note that this API exposes - openly without authentication - the
-    // information on the cluster's members inside one data center. We do not
-    // consider this to be a security risk, because an attacker can already
-    // scan an entire subnet for nodes responding to the health request,
-    // or even just scan for open ports.
-    r.put(operation_type::GET, "/localnodes", new local_nodelist_handler(_pending_requests));
-}
-
-//FIXME: A way to immediately invalidate the cache should be considered,
-// e.g. when the system table which stores the keys is changed.
-// For now, this propagation may take up to 1 minute.
-server::server(executor& exec)
-        : _http_server("http-alternator")
-        , _https_server("https-alternator")
-        , _executor(exec)
-        , _key_cache(1024, 1min, slogger)
-        , _enforce_authorization(false)
-        , _enabled_servers{}
-        , _pending_requests{}
-      , _callbacks{
-        {"CreateTable", [] (executor& e, executor::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value json_request, std::unique_ptr<request> req) {
-            return e.create_table(client_state, std::move(trace_state), std::move(permit), std::move(json_request));
-        }},
-        {"DescribeTable", [] (executor& e, executor::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value json_request, std::unique_ptr<request> req) {
-            return e.describe_table(client_state, std::move(trace_state), std::move(permit), std::move(json_request));
-        }},
-        {"DeleteTable", [] (executor& e, executor::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value json_request, std::unique_ptr<request> req) {
-            return e.delete_table(client_state, std::move(trace_state), std::move(permit), std::move(json_request));
-        }},
-        {"PutItem", [] (executor& e, executor::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value json_request, std::unique_ptr<request> req) {
-            return e.put_item(client_state, std::move(trace_state), std::move(permit), std::move(json_request));
-        }},
-        {"UpdateItem", [] (executor& e, executor::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value json_request, std::unique_ptr<request> req) {
-            return e.update_item(client_state, std::move(trace_state), std::move(permit), std::move(json_request));
-        }},
-        {"GetItem", [] (executor& e, executor::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value json_request, std::unique_ptr<request> req) {
-            return e.get_item(client_state, std::move(trace_state), std::move(permit), std::move(json_request));
-        }},
-        {"DeleteItem", [] (executor& e, executor::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value json_request, std::unique_ptr<request> req) {
-            return e.delete_item(client_state, std::move(trace_state), std::move(permit), std::move(json_request));
-        }},
-        {"ListTables", [] (executor& e, executor::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value json_request, std::unique_ptr<request> req) {
-            return e.list_tables(client_state, std::move(permit), std::move(json_request));
-        }},
-        {"Scan", [] (executor& e, executor::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value json_request, std::unique_ptr<request> req) {
-            return e.scan(client_state, std::move(trace_state), std::move(permit), std::move(json_request));
-        }},
-        {"DescribeEndpoints", [] (executor& e, executor::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value json_request, std::unique_ptr<request> req) {
-            return e.describe_endpoints(client_state, std::move(permit), std::move(json_request), req->get_header("Host"));
-        }},
-        {"BatchWriteItem", [] (executor& e, executor::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value json_request, std::unique_ptr<request> req) {
-            return e.batch_write_item(client_state, std::move(trace_state), std::move(permit), std::move(json_request));
-        }},
-        {"BatchGetItem", [] (executor& e, executor::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value json_request, std::unique_ptr<request> req) {
-            return e.batch_get_item(client_state, std::move(trace_state), std::move(permit), std::move(json_request));
-        }},
-        {"Query", [] (executor& e, executor::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value json_request, std::unique_ptr<request> req) {
-            return e.query(client_state, std::move(trace_state), std::move(permit), std::move(json_request));
-        }},
-        {"TagResource", [] (executor& e, executor::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value json_request, std::unique_ptr<request> req) {
-            return e.tag_resource(client_state, std::move(permit), std::move(json_request));
-        }},
-        {"UntagResource", [] (executor& e, executor::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value json_request, std::unique_ptr<request> req) {
-            return e.untag_resource(client_state, std::move(permit), std::move(json_request));
-        }},
-        {"ListTagsOfResource", [] (executor& e, executor::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value json_request, std::unique_ptr<request> req) {
-            return e.list_tags_of_resource(client_state, std::move(permit), std::move(json_request));
-        }},
-    } {
-}
-
-future<> server::init(net::inet_address addr, std::optional<uint16_t> port, std::optional<uint16_t> https_port, std::optional<tls::credentials_builder> creds,
-        bool enforce_authorization, semaphore* memory_limiter) {
-    _memory_limiter = memory_limiter;
-    _enforce_authorization = enforce_authorization;
-    if (!port && !https_port) {
-        return make_exception_future<>(std::runtime_error("Either regular port or TLS port"
-                " must be specified in order to init an alternator HTTP server instance"));
-    }
-    return seastar::async([this, addr, port, https_port, creds] {
-        try {
-            _executor.start().get();
-
-            if (port) {
-                set_routes(_http_server._routes);
-                _http_server.set_content_length_limit(server::content_length_limit);
-                _http_server.listen(socket_address{addr, *port}).get();
-                _enabled_servers.push_back(std::ref(_http_server));
-                slogger.info("Alternator HTTP server listening on {} port {}", addr, *port);
-            }
-            if (https_port) {
-                set_routes(_https_server._routes);
-                _https_server.set_content_length_limit(server::content_length_limit);
-                _https_server.set_tls_credentials(creds->build_server_credentials());
-                _https_server.listen(socket_address{addr, *https_port}).get();
-                _enabled_servers.push_back(std::ref(_https_server));
-                slogger.info("Alternator HTTPS server listening on {} port {}", addr, *https_port);
-            }
-        } catch (...) {
-            slogger.error("Failed to set up Alternator HTTP server on {} port {}, TLS port {}: {}",
-                    addr, port ? std::to_string(*port) : "OFF", https_port ? std::to_string(*https_port) : "OFF", std::current_exception());
-            std::throw_with_nested(std::runtime_error(
-                    format("Failed to set up Alternator HTTP server on {} port {}, TLS port {}",
-                            addr, port ? std::to_string(*port) : "OFF", https_port ? std::to_string(*https_port) : "OFF")));
-        }
-    });
-}
-
-future<> server::stop() {
-    return parallel_for_each(_enabled_servers, [] (http_server& server) {
-        return server.stop();
-    }).then([this] {
-        return _pending_requests.close();
-    }).then([this] {
-        return _json_parser.stop();
-    });
-}
-
-server::json_parser::json_parser() : _run_parse_json_thread(async([this] {
-        while (true) {
-            _document_waiting.wait().get();
-            if (_as.abort_requested()) {
-                return;
-            }
-            try {
-                _parsed_document = rjson::parse_yieldable(_raw_document);
-                _current_exception = nullptr;
-            } catch (...) {
-                _current_exception = std::current_exception();
-            }
-            _document_parsed.signal();
-        }
-    })) {
-}
-
-future<rjson::value> server::json_parser::parse(std::string_view content) {
-    if (content.size() < yieldable_parsing_threshold) {
-        return make_ready_future<rjson::value>(rjson::parse(content));
-    }
-    return with_semaphore(_parsing_sem, 1, [this, content] {
-        _raw_document = content;
-        _document_waiting.signal();
-        return _document_parsed.wait().then([this] {
-            if (_current_exception) {
-                return make_exception_future<rjson::value>(_current_exception);
-            }
-            return make_ready_future<rjson::value>(std::move(_parsed_document));
-        });
-    });
-}
-
-future<> server::json_parser::stop() {
-    _as.request_abort();
-    _document_waiting.signal();
-    _document_parsed.broken();
-    return std::move(_run_parse_json_thread);
-}
-
-}
-

alternator/server.hh

@@ -1,83 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-#include "alternator/executor.hh"
-#include <seastar/core/future.hh>
-#include <seastar/http/httpd.hh>
-#include <seastar/net/tls.hh>
-#include <optional>
-#include <alternator/auth.hh>
-#include <utils/small_vector.hh>
-#include <seastar/core/units.hh>
-
-namespace alternator {
-
-class server {
-    static constexpr size_t content_length_limit = 16*MB;
-    using alternator_callback = std::function<future<executor::request_return_type>(executor&, executor::client_state&,
-            tracing::trace_state_ptr, service_permit, rjson::value, std::unique_ptr<request>)>;
-    using alternator_callbacks_map = std::unordered_map<std::string_view, alternator_callback>;
-
-    http_server _http_server;
-    http_server _https_server;
-    executor& _executor;
-
-    key_cache _key_cache;
-    bool _enforce_authorization;
-    utils::small_vector<std::reference_wrapper<seastar::httpd::http_server>, 2> _enabled_servers;
-    gate _pending_requests;
-    alternator_callbacks_map _callbacks;
-
-    semaphore* _memory_limiter;
-
-    class json_parser {
-        static constexpr size_t yieldable_parsing_threshold = 16*KB;
-        std::string_view _raw_document;
-        rjson::value _parsed_document;
-        std::exception_ptr _current_exception;
-        semaphore _parsing_sem{1};
-        condition_variable _document_waiting;
-        condition_variable _document_parsed;
-        abort_source _as;
-        future<> _run_parse_json_thread;
-    public:
-        json_parser();
-        future<rjson::value> parse(std::string_view content);
-        future<> stop();
-    };
-    json_parser _json_parser;
-
-public:
-    server(executor& executor);
-
-    future<> init(net::inet_address addr, std::optional<uint16_t> port, std::optional<uint16_t> https_port, std::optional<tls::credentials_builder> creds,
-            bool enforce_authorization, semaphore* memory_limiter);
-    future<> stop();
-private:
-    void set_routes(seastar::httpd::routes& r);
-    future<> verify_signature(const seastar::httpd::request& r);
-    future<executor::request_return_type> handle_api_request(std::unique_ptr<request>&& req);
-};
-
-}
-

alternator/stats.cc

@@ -1,104 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "stats.hh"
-
-#include <seastar/core/metrics.hh>
-
-namespace alternator {
-
-const char* ALTERNATOR_METRICS = "alternator";
-
-stats::stats() : api_operations{} {
-    // Register the
-    seastar::metrics::label op("op");
-
-    _metrics.add_group("alternator", {
-#define OPERATION(name, CamelCaseName) \
-                seastar::metrics::make_total_operations("operation", api_operations.name, \
-                        seastar::metrics::description("number of operations via Alternator API"), {op(CamelCaseName)}),
-#define OPERATION_LATENCY(name, CamelCaseName) \
-                seastar::metrics::make_histogram("op_latency", \
-                        seastar::metrics::description("Latency histogram of an operation via Alternator API"), {op(CamelCaseName)}, [this]{return api_operations.name.get_histogram(1,20);}),
-            OPERATION(batch_write_item, "BatchWriteItem")
-            OPERATION(create_backup, "CreateBackup")
-            OPERATION(create_global_table, "CreateGlobalTable")
-            OPERATION(create_table, "CreateTable")
-            OPERATION(delete_backup, "DeleteBackup")
-            OPERATION(delete_item, "DeleteItem")
-            OPERATION(delete_table, "DeleteTable")
-            OPERATION(describe_backup, "DescribeBackup")
-            OPERATION(describe_continuous_backups, "DescribeContinuousBackups")
-            OPERATION(describe_endpoints, "DescribeEndpoints")
-            OPERATION(describe_global_table, "DescribeGlobalTable")
-            OPERATION(describe_global_table_settings, "DescribeGlobalTableSettings")
-            OPERATION(describe_limits, "DescribeLimits")
-            OPERATION(describe_table, "DescribeTable")
-            OPERATION(describe_time_to_live, "DescribeTimeToLive")
-            OPERATION(get_item, "GetItem")
-            OPERATION(list_backups, "ListBackups")
-            OPERATION(list_global_tables, "ListGlobalTables")
-            OPERATION(list_tables, "ListTables")
-            OPERATION(list_tags_of_resource, "ListTagsOfResource")
-            OPERATION(put_item, "PutItem")
-            OPERATION(query, "Query")
-            OPERATION(restore_table_from_backup, "RestoreTableFromBackup")
-            OPERATION(restore_table_to_point_in_time, "RestoreTableToPointInTime")
-            OPERATION(scan, "Scan")
-            OPERATION(tag_resource, "TagResource")
-            OPERATION(transact_get_items, "TransactGetItems")
-            OPERATION(transact_write_items, "TransactWriteItems")
-            OPERATION(untag_resource, "UntagResource")
-            OPERATION(update_continuous_backups, "UpdateContinuousBackups")
-            OPERATION(update_global_table, "UpdateGlobalTable")
-            OPERATION(update_global_table_settings, "UpdateGlobalTableSettings")
-            OPERATION(update_item, "UpdateItem")
-            OPERATION(update_table, "UpdateTable")
-            OPERATION(update_time_to_live, "UpdateTimeToLive")
-            OPERATION_LATENCY(put_item_latency, "PutItem")
-            OPERATION_LATENCY(get_item_latency, "GetItem")
-            OPERATION_LATENCY(delete_item_latency, "DeleteItem")
-            OPERATION_LATENCY(update_item_latency, "UpdateItem")
-    });
-    _metrics.add_group("alternator", {
-            seastar::metrics::make_total_operations("unsupported_operations", unsupported_operations,
-                    seastar::metrics::description("number of unsupported operations via Alternator API")),
-            seastar::metrics::make_total_operations("total_operations", total_operations,
-                    seastar::metrics::description("number of total operations via Alternator API")),
-            seastar::metrics::make_total_operations("reads_before_write", reads_before_write,
-                    seastar::metrics::description("number of performed read-before-write operations")),
-            seastar::metrics::make_total_operations("write_using_lwt", write_using_lwt,
-                    seastar::metrics::description("number of writes that used LWT")),
-            seastar::metrics::make_total_operations("shard_bounce_for_lwt", shard_bounce_for_lwt,
-                    seastar::metrics::description("number writes that had to be bounced from this shard because of LWT requirements")),
-            seastar::metrics::make_total_operations("requests_blocked_memory", requests_blocked_memory,
-                    seastar::metrics::description("Counts a number of requests blocked due to memory pressure.")),
-            seastar::metrics::make_total_operations("filtered_rows_read_total", cql_stats.filtered_rows_read_total,
-                    seastar::metrics::description("number of rows read during filtering operations")),
-            seastar::metrics::make_total_operations("filtered_rows_matched_total", cql_stats.filtered_rows_matched_total,
-                    seastar::metrics::description("number of rows read and matched during filtering operations")),
-            seastar::metrics::make_total_operations("filtered_rows_dropped_total", [this] { return cql_stats.filtered_rows_read_total - cql_stats.filtered_rows_matched_total; },
-                    seastar::metrics::description("number of rows read and dropped during filtering operations")),
-    });
-}
-
-
-}

alternator/stats.hh

@@ -1,98 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-#include <cstdint>
-
-#include <seastar/core/metrics_registration.hh>
-#include "seastarx.hh"
-#include "utils/estimated_histogram.hh"
-#include "cql3/stats.hh"
-
-namespace alternator {
-
-// Object holding per-shard statistics related to Alternator.
-// While this object is alive, these metrics are also registered to be
-// visible by the metrics REST API, with the "alternator" prefix.
-class stats {
-public:
-    stats();
-    // Count of DynamoDB API operations by types
-    struct {
-        uint64_t batch_get_item = 0;
-        uint64_t batch_write_item = 0;
-        uint64_t create_backup = 0;
-        uint64_t create_global_table = 0;
-        uint64_t create_table = 0;
-        uint64_t delete_backup = 0;
-        uint64_t delete_item = 0;
-        uint64_t delete_table = 0;
-        uint64_t describe_backup = 0;
-        uint64_t describe_continuous_backups = 0;
-        uint64_t describe_endpoints = 0;
-        uint64_t describe_global_table = 0;
-        uint64_t describe_global_table_settings = 0;
-        uint64_t describe_limits = 0;
-        uint64_t describe_table = 0;
-        uint64_t describe_time_to_live = 0;
-        uint64_t get_item = 0;
-        uint64_t list_backups = 0;
-        uint64_t list_global_tables = 0;
-        uint64_t list_tables = 0;
-        uint64_t list_tags_of_resource = 0;
-        uint64_t put_item = 0;
-        uint64_t query = 0;
-        uint64_t restore_table_from_backup = 0;
-        uint64_t restore_table_to_point_in_time = 0;
-        uint64_t scan = 0;
-        uint64_t tag_resource = 0;
-        uint64_t transact_get_items = 0;
-        uint64_t transact_write_items = 0;
-        uint64_t untag_resource = 0;
-        uint64_t update_continuous_backups = 0;
-        uint64_t update_global_table = 0;
-        uint64_t update_global_table_settings = 0;
-        uint64_t update_item = 0;
-        uint64_t update_table = 0;
-        uint64_t update_time_to_live = 0;
-
-        utils::estimated_histogram put_item_latency;
-        utils::estimated_histogram get_item_latency;
-        utils::estimated_histogram delete_item_latency;
-        utils::estimated_histogram update_item_latency;
-    } api_operations;
-    // Miscellaneous event counters
-    uint64_t total_operations = 0;
-    uint64_t unsupported_operations = 0;
-    uint64_t reads_before_write = 0;
-    uint64_t write_using_lwt = 0;
-    uint64_t shard_bounce_for_lwt = 0;
-    uint64_t requests_blocked_memory = 0;
-    // CQL-derived stats
-    cql3::cql_stats cql_stats;
-private:
-    // The metric_groups object holds this stat object's metrics registered
-    // as long as the stats object is alive.
-    seastar::metrics::metric_groups _metrics;
-};
-
-}

alternator/tags_extension.hh

@@ -1,53 +0,0 @@
-/*
- * Copyright 2019 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-#include "serializer.hh"
-#include "schema.hh"
-#include "db/extensions.hh"
-
-namespace alternator {
-
-class tags_extension : public schema_extension {
-public:
-    static constexpr auto NAME = "scylla_tags";
-
-    tags_extension() = default;
-    explicit tags_extension(const std::map<sstring, sstring>& tags) : _tags(std::move(tags)) {}
-    explicit tags_extension(bytes b) : _tags(tags_extension::deserialize(b)) {}
-    explicit tags_extension(const sstring& s) {
-        throw std::logic_error("Cannot create tags from string");
-    }
-    bytes serialize() const override {
-        return ser::serialize_to_buffer<bytes>(_tags);
-    }
-    static std::map<sstring, sstring> deserialize(bytes_view buffer) {
-        return ser::deserialize_from_buffer(buffer, boost::type<std::map<sstring, sstring>>());
-    }
-    const std::map<sstring, sstring>& tags() const {
-        return _tags;
-    }
-private:
-    std::map<sstring, sstring> _tags;
-};
-
-}

api/api-doc/cache_service.json

@@ -13,7 +13,7 @@
             {
                "method":"GET",
                "summary":"get row cache save period in seconds",
-               "type": "long",
+               "type":"int",
                "nickname":"get_row_cache_save_period_in_seconds",
                "produces":[
                   "application/json"
@@ -35,7 +35,7 @@
                      "description":"row cache save period in seconds",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -48,7 +48,7 @@
             {
                "method":"GET",
                "summary":"get key cache save period in seconds",
-               "type": "long",
+               "type":"int",
                "nickname":"get_key_cache_save_period_in_seconds",
                "produces":[
                   "application/json"
@@ -70,7 +70,7 @@
                      "description":"key cache save period in seconds",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -83,7 +83,7 @@
             {
                "method":"GET",
                "summary":"get counter cache save period in seconds",
-               "type": "long",
+               "type":"int",
                "nickname":"get_counter_cache_save_period_in_seconds",
                "produces":[
                   "application/json"
@@ -105,7 +105,7 @@
                      "description":"counter cache save period in seconds",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -118,7 +118,7 @@
             {
                "method":"GET",
                "summary":"get row cache keys to save",
-               "type": "long",
+               "type":"int",
                "nickname":"get_row_cache_keys_to_save",
                "produces":[
                   "application/json"
@@ -140,7 +140,7 @@
                      "description":"row cache keys to save",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -153,7 +153,7 @@
             {
                "method":"GET",
                "summary":"get key cache keys to save",
-               "type": "long",
+               "type":"int",
                "nickname":"get_key_cache_keys_to_save",
                "produces":[
                   "application/json"
@@ -175,7 +175,7 @@
                      "description":"key cache keys to save",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -188,7 +188,7 @@
             {
                "method":"GET",
                "summary":"get counter cache keys to save",
-               "type": "long",
+               "type":"int",
                "nickname":"get_counter_cache_keys_to_save",
                "produces":[
                   "application/json"
@@ -210,7 +210,7 @@
                      "description":"counter cache keys to save",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -448,7 +448,7 @@
         {
           "method": "GET",
           "summary": "Get key entries",
-          "type": "long",
+          "type": "int",
           "nickname": "get_key_entries",
           "produces": [
             "application/json"
@@ -568,7 +568,7 @@
         {
           "method": "GET",
           "summary": "Get row entries",
-          "type": "long",
+          "type": "int",
           "nickname": "get_row_entries",
           "produces": [
             "application/json"
@@ -688,7 +688,7 @@
         {
           "method": "GET",
           "summary": "Get counter entries",
-          "type": "long",
+          "type": "int",
           "nickname": "get_counter_entries",
           "produces": [
             "application/json"

api/api-doc/column_family.json

@@ -70,7 +70,7 @@
             {
                "method":"POST",
                "summary":"Force a major compaction of this column family",
-               "type":"void",
+               "type":"string",
                "nickname":"force_major_compaction",
                "produces":[
                   "application/json"
@@ -121,7 +121,7 @@
                      "description":"The minimum number of sstables in queue before compaction kicks off",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -172,7 +172,7 @@
                      "description":"The maximum number of sstables in queue before compaction kicks off",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -223,7 +223,7 @@
                      "description":"The maximum number of sstables in queue before compaction kicks off",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   },
                   {
@@ -231,7 +231,7 @@
                      "description":"The minimum number of sstables in queue before compaction kicks off",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -544,7 +544,7 @@
                "summary":"sstable count for each level. empty unless leveled compaction is used",
                "type":"array",
                "items":{
-                  "type": "long"
+                  "type":"int"
                },
                "nickname":"get_sstable_count_per_level",
                "produces":[
@@ -611,54 +611,6 @@
             }
          ]
       },
-      {
-         "path":"/column_family/toppartitions/{name}",
-         "operations":[
-            {
-               "method":"GET",
-               "summary":"Toppartitions query",
-               "type":"toppartitions_query_results",
-               "nickname":"toppartitions",
-               "produces":[
-                  "application/json"
-               ],
-               "parameters":[
-                  {
-                     "name":"name",
-                     "description":"The column family name in keyspace:name format",
-                     "required":true,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"path"
-                  },
-                  {
-                     "name":"duration",
-                     "description":"Duration (in milliseconds) of monitoring operation",
-                     "required":true,
-                     "allowMultiple":false,
-                     "type": "long",
-                     "paramType":"query"
-                  },
-                  {
-                    "name":"list_size",
-                    "description":"number of the top partitions to list",
-                    "required":false,
-                    "allowMultiple":false,
-                    "type": "long",
-                    "paramType":"query"
-                 },
-                 {
-                    "name":"capacity",
-                    "description":"capacity of stream summary: determines amount of resources used in query processing",
-                    "required":false,
-                    "allowMultiple":false,
-                    "type": "long",
-                    "paramType":"query"
-                 }
-              ]
-            }
-         ]
-      },
       {
          "path":"/column_family/metrics/memtable_columns_count/",
          "operations":[
@@ -921,7 +873,7 @@
             {
                "method":"GET",
                "summary":"Get memtable switch count",
-               "type": "long",
+               "type":"int",
                "nickname":"get_memtable_switch_count",
                "produces":[
                   "application/json"
@@ -945,7 +897,7 @@
             {
                "method":"GET",
                "summary":"Get all memtable switch count",
-               "type": "long",
+               "type":"int",
                "nickname":"get_all_memtable_switch_count",
                "produces":[
                   "application/json"
@@ -1082,7 +1034,7 @@
             {
                "method":"GET",
                "summary":"Get read latency",
-               "type": "long",
+               "type":"int",
                "nickname":"get_read_latency",
                "produces":[
                   "application/json"
@@ -1235,7 +1187,7 @@
             {
                "method":"GET",
                "summary":"Get all read latency",
-               "type": "long",
+               "type":"int",
                "nickname":"get_all_read_latency",
                "produces":[
                   "application/json"
@@ -1251,7 +1203,7 @@
             {
                "method":"GET",
                "summary":"Get range latency",
-               "type": "long",
+               "type":"int",
                "nickname":"get_range_latency",
                "produces":[
                   "application/json"
@@ -1275,7 +1227,7 @@
             {
                "method":"GET",
                "summary":"Get all range latency",
-               "type": "long",
+               "type":"int",
                "nickname":"get_all_range_latency",
                "produces":[
                   "application/json"
@@ -1291,7 +1243,7 @@
             {
                "method":"GET",
                "summary":"Get write latency",
-               "type": "long",
+               "type":"int",
                "nickname":"get_write_latency",
                "produces":[
                   "application/json"
@@ -1444,7 +1396,7 @@
             {
                "method":"GET",
                "summary":"Get all write latency",
-               "type": "long",
+               "type":"int",
                "nickname":"get_all_write_latency",
                "produces":[
                   "application/json"
@@ -1460,7 +1412,7 @@
             {
                "method":"GET",
                "summary":"Get pending flushes",
-               "type": "long",
+               "type":"int",
                "nickname":"get_pending_flushes",
                "produces":[
                   "application/json"
@@ -1484,7 +1436,7 @@
             {
                "method":"GET",
                "summary":"Get all pending flushes",
-               "type": "long",
+               "type":"int",
                "nickname":"get_all_pending_flushes",
                "produces":[
                   "application/json"
@@ -1500,7 +1452,7 @@
             {
                "method":"GET",
                "summary":"Get pending compactions",
-               "type": "long",
+               "type":"int",
                "nickname":"get_pending_compactions",
                "produces":[
                   "application/json"
@@ -1524,7 +1476,7 @@
             {
                "method":"GET",
                "summary":"Get all pending compactions",
-               "type": "long",
+               "type":"int",
                "nickname":"get_all_pending_compactions",
                "produces":[
                   "application/json"
@@ -1540,7 +1492,7 @@
             {
                "method":"GET",
                "summary":"Get live ss table count",
-               "type": "long",
+               "type":"int",
                "nickname":"get_live_ss_table_count",
                "produces":[
                   "application/json"
@@ -1564,7 +1516,7 @@
             {
                "method":"GET",
                "summary":"Get all live ss table count",
-               "type": "long",
+               "type":"int",
                "nickname":"get_all_live_ss_table_count",
                "produces":[
                   "application/json"
@@ -1580,7 +1532,7 @@
             {
                "method":"GET",
                "summary":"Get live disk space used",
-               "type": "long",
+               "type":"int",
                "nickname":"get_live_disk_space_used",
                "produces":[
                   "application/json"
@@ -1604,7 +1556,7 @@
             {
                "method":"GET",
                "summary":"Get all live disk space used",
-               "type": "long",
+               "type":"int",
                "nickname":"get_all_live_disk_space_used",
                "produces":[
                   "application/json"
@@ -1620,7 +1572,7 @@
             {
                "method":"GET",
                "summary":"Get total disk space used",
-               "type": "long",
+               "type":"int",
                "nickname":"get_total_disk_space_used",
                "produces":[
                   "application/json"
@@ -1644,7 +1596,7 @@
             {
                "method":"GET",
                "summary":"Get all total disk space used",
-               "type": "long",
+               "type":"int",
                "nickname":"get_all_total_disk_space_used",
                "produces":[
                   "application/json"
@@ -2100,7 +2052,7 @@
             {
                "method":"GET",
                "summary":"Get speculative retries",
-               "type": "long",
+               "type":"int",
                "nickname":"get_speculative_retries",
                "produces":[
                   "application/json"
@@ -2124,7 +2076,7 @@
             {
                "method":"GET",
                "summary":"Get all speculative retries",
-               "type": "long",
+               "type":"int",
                "nickname":"get_all_speculative_retries",
                "produces":[
                   "application/json"
@@ -2204,7 +2156,7 @@
             {
                "method":"GET",
                "summary":"Get row cache hit out of range",
-               "type": "long",
+               "type":"int",
                "nickname":"get_row_cache_hit_out_of_range",
                "produces":[
                   "application/json"
@@ -2228,7 +2180,7 @@
             {
                "method":"GET",
                "summary":"Get all row cache hit out of range",
-               "type": "long",
+               "type":"int",
                "nickname":"get_all_row_cache_hit_out_of_range",
                "produces":[
                   "application/json"
@@ -2244,7 +2196,7 @@
             {
                "method":"GET",
                "summary":"Get row cache hit",
-               "type": "long",
+               "type":"int",
                "nickname":"get_row_cache_hit",
                "produces":[
                   "application/json"
@@ -2268,7 +2220,7 @@
             {
                "method":"GET",
                "summary":"Get all row cache hit",
-               "type": "long",
+               "type":"int",
                "nickname":"get_all_row_cache_hit",
                "produces":[
                   "application/json"
@@ -2284,7 +2236,7 @@
             {
                "method":"GET",
                "summary":"Get row cache miss",
-               "type": "long",
+               "type":"int",
                "nickname":"get_row_cache_miss",
                "produces":[
                   "application/json"
@@ -2308,7 +2260,7 @@
             {
                "method":"GET",
                "summary":"Get all row cache miss",
-               "type": "long",
+               "type":"int",
                "nickname":"get_all_row_cache_miss",
                "produces":[
                   "application/json"
@@ -2324,7 +2276,7 @@
             {
                "method":"GET",
                "summary":"Get cas prepare",
-               "type": "long",
+               "type":"int",
                "nickname":"get_cas_prepare",
                "produces":[
                   "application/json"
@@ -2348,7 +2300,7 @@
             {
                "method":"GET",
                "summary":"Get cas propose",
-               "type": "long",
+               "type":"int",
                "nickname":"get_cas_propose",
                "produces":[
                   "application/json"
@@ -2372,7 +2324,7 @@
             {
                "method":"GET",
                "summary":"Get cas commit",
-               "type": "long",
+               "type":"int",
                "nickname":"get_cas_commit",
                "produces":[
                   "application/json"
@@ -2864,44 +2816,6 @@
                "description":"The column family type"
             }
          }
-      },
-      "toppartitions_record":{
-         "id":"toppartitions_record",
-         "description":"nodetool toppartitions query record",
-         "properties":{
-            "partition":{
-               "type":"string",
-               "description":"Partition key"
-            },
-            "count":{
-               "type":"long",
-               "description":"Number of read/write operations"
-            },
-            "error":{
-               "type":"long",
-               "description":"Indication of inaccuracy in counting PKs"
-            }
-         }
-      },
-      "toppartitions_query_results":{
-         "id":"toppartitions_query_results",
-         "description":"nodetool toppartitions query results",
-         "properties":{
-            "read":{
-               "type":"array",
-               "items":{
-                  "type":"toppartitions_record"
-               },
-               "description":"Read results"
-            },
-            "write":{
-               "type":"array",
-               "items":{
-                  "type":"toppartitions_record"
-               },
-               "description":"Write results"
-            }
-         }
       }
    }
 }

api/api-doc/compaction_manager.json

@@ -118,7 +118,7 @@
         {
           "method": "GET",
           "summary": "Get pending tasks",
-          "type": "long",
+          "type": "int",
           "nickname": "get_pending_tasks",
           "produces": [
             "application/json"
@@ -127,24 +127,6 @@
         }
       ]
     },
-    {
-      "path": "/compaction_manager/metrics/pending_tasks_by_table",
-      "operations": [
-        {
-          "method": "GET",
-          "summary": "Get pending tasks by table name",
-          "type": "array",
-          "items": {
-              "type": "pending_compaction"
-           },
-          "nickname": "get_pending_tasks_by_table",
-          "produces": [
-            "application/json"
-          ],
-          "parameters": []
-        }
-      ]
-    },
     {
       "path": "/compaction_manager/metrics/completed_tasks",
       "operations": [
@@ -181,7 +163,7 @@
         {
           "method": "GET",
           "summary": "Get bytes compacted",
-          "type": "long",
+          "type": "int",
           "nickname": "get_bytes_compacted",
           "produces": [
             "application/json"
@@ -197,7 +179,7 @@
          "description":"A row merged information",
          "properties":{
             "key":{
-               "type": "long",
+               "type":"int",
                "description":"The number of sstable"
             },
             "value":{
@@ -262,23 +244,6 @@
             }
          }
       },
-      "pending_compaction": {
-        "id": "pending_compaction",
-        "properties": {
-            "cf": {
-               "type": "string",
-               "description": "The column family name"
-            },
-            "ks": {
-               "type":"string",
-               "description": "The keyspace name"
-            },
-            "task": {
-               "type":"long",
-               "description": "The number of pending tasks"
-            }
-        }
-      },
       "history": {
       "id":"history",
       "description":"Compaction history information",

api/api-doc/error_injection.json

@@ -1,90 +0,0 @@
-{
-   "apiVersion":"0.0.1",
-   "swaggerVersion":"1.2",
-   "basePath":"{{Protocol}}://{{Host}}",
-   "resourcePath":"/error_injection",
-   "produces":[
-      "application/json"
-   ],
-   "apis":[
-      {
-         "path":"/v2/error_injection/injection/{injection}",
-         "operations":[
-            {
-               "method":"POST",
-               "summary":"Activate an injection that triggers an error in code",
-               "type":"void",
-               "nickname":"enable_injection",
-               "produces":[
-                  "application/json"
-               ],
-               "parameters":[
-                  {
-                     "name":"injection",
-                     "description":"injection name, should correspond to an injection added in code",
-                     "required":true,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"path"
-                  },
-                  {
-                     "name":"one_shot",
-                     "description":"boolean flag indicating whether the injection should be enabled to trigger only once",
-                     "required":false,
-                     "allowMultiple":false,
-                     "type":"boolean",
-                     "paramType":"query"
-                  }
-               ]
-            },
-            {
-               "method":"DELETE",
-               "summary":"Deactivate an injection previously activated by the API",
-               "type":"void",
-               "nickname":"disable_injection",
-               "produces":[
-                  "application/json"
-               ],
-               "parameters":[
-                  {
-                     "name":"injection",
-                     "description":"injection name",
-                     "required":true,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"path"
-                  }
-               ]
-            }
-         ]
-      },
-      {
-         "path":"/v2/error_injection/injection",
-         "operations":[
-            {
-               "method":"GET",
-               "summary":"List all enabled injections on all shards, i.e. injections that will trigger an error in the code",
-               "type":"array",
-               "items":{
-                  "type":"string"
-               },
-               "nickname":"get_enabled_injections_on_all",
-               "produces":[
-                  "application/json"
-               ],
-               "parameters":[]
-            },
-            {
-               "method":"DELETE",
-               "summary":"Deactivate all injections previously activated on all shards by the API",
-               "type":"void",
-               "nickname":"disable_on_all",
-               "produces":[
-                  "application/json"
-               ],
-               "parameters":[]
-            }
-         ]
-      }
-   ]
-}

api/api-doc/failure_detector.json

@@ -110,7 +110,7 @@
             {
                "method":"GET",
                "summary":"Get count down endpoint",
-               "type": "long",
+               "type":"int",
                "nickname":"get_down_endpoint_count",
                "produces":[
                   "application/json"
@@ -126,7 +126,7 @@
             {
                "method":"GET",
                "summary":"Get count up endpoint",
-               "type": "long",
+               "type":"int",
                "nickname":"get_up_endpoint_count",
                "produces":[
                   "application/json"
@@ -180,11 +180,11 @@
                     "description": "The endpoint address"
                 },
                 "generation": {
-                    "type": "long",
+                    "type": "int",
                     "description": "The heart beat generation"
                 },
                 "version": {
-                    "type": "long",
+                    "type": "int",
                     "description": "The heart beat version"
                 },
                 "update_time": {
@@ -209,7 +209,7 @@
            "description": "Holds a version value for an application state",
                "properties": {
                 "application_state": {
-                    "type": "long",
+                    "type": "int",
                     "description": "The application state enum index"
                 },
                 "value": {
@@ -217,7 +217,7 @@
                     "description": "The version value"
                 },
                 "version": {
-                    "type": "long",
+                    "type": "int",
                     "description": "The application state version"
                 }
             }

api/api-doc/gossiper.json

@@ -75,7 +75,7 @@
             {
                "method":"GET",
                "summary":"Returns files which are pending for archival attempt. Does NOT include failed archive attempts",
-               "type": "long",
+               "type":"int",
                "nickname":"get_current_generation_number",
                "produces":[
                   "application/json"
@@ -99,7 +99,7 @@
             {
                "method":"GET",
                "summary":"Get heart beat version for a node",
-               "type": "long",
+               "type":"int",
                "nickname":"get_current_heart_beat_version",
                "produces":[
                   "application/json"

api/api-doc/hinted_handoff.json

@@ -99,7 +99,7 @@
         {
           "method": "GET",
           "summary": "Get create hint count",
-          "type": "long",
+          "type": "int",
           "nickname": "get_create_hint_count",
           "produces": [
             "application/json"
@@ -123,7 +123,7 @@
         {
           "method": "GET",
           "summary": "Get not stored hints count",
-          "type": "long",
+          "type": "int",
           "nickname": "get_not_stored_hints_count",
           "produces": [
             "application/json"

api/api-doc/messaging_service.json

@@ -191,7 +191,7 @@
             {
                "method":"GET",
                "summary":"Get the version number",
-               "type": "long",
+               "type":"int",
                "nickname":"get_version",
                "produces":[
                   "application/json"

api/api-doc/storage_proxy.json

@@ -105,7 +105,7 @@
             {
                "method":"GET",
                "summary":"Get the max hint window",
-               "type": "long",
+               "type":"int",
                "nickname":"get_max_hint_window",
                "produces":[
                   "application/json"
@@ -128,7 +128,7 @@
                      "description":"max hint window in ms",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -141,7 +141,7 @@
             {
                "method":"GET",
                "summary":"Get max hints in progress",
-               "type": "long",
+               "type":"int",
                "nickname":"get_max_hints_in_progress",
                "produces":[
                   "application/json"
@@ -164,7 +164,7 @@
                      "description":"max hints in progress",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -177,7 +177,7 @@
             {
                "method":"GET",
                "summary":"get hints in progress",
-               "type": "long",
+               "type":"int",
                "nickname":"get_hints_in_progress",
                "produces":[
                   "application/json"
@@ -602,7 +602,7 @@
         {
           "method": "GET",
           "summary": "Get cas write metrics",
-          "type": "long",
+          "type": "int",
           "nickname": "get_cas_write_metrics_unfinished_commit",
           "produces": [
             "application/json"
@@ -632,7 +632,7 @@
         {
           "method": "GET",
           "summary": "Get cas write metrics",
-          "type": "long",
+          "type": "int",
           "nickname": "get_cas_write_metrics_condition_not_met",
           "produces": [
             "application/json"
@@ -641,28 +641,13 @@
         }
       ]
     },
-    {
-      "path": "/storage_proxy/metrics/cas_write/failed_read_round_optimization",
-      "operations": [
-        {
-          "method": "GET",
-          "summary": "Get cas write metrics",
-          "type": "long",
-          "nickname": "get_cas_write_metrics_failed_read_round_optimization",
-          "produces": [
-            "application/json"
-          ],
-          "parameters": []
-        }
-      ]
-    },
     {
       "path": "/storage_proxy/metrics/cas_read/unfinished_commit",
       "operations": [
         {
           "method": "GET",
           "summary": "Get cas read metrics",
-          "type": "long",
+          "type": "int",
           "nickname": "get_cas_read_metrics_unfinished_commit",
           "produces": [
             "application/json"
@@ -686,13 +671,28 @@
         }
       ]
     },
+    {
+      "path": "/storage_proxy/metrics/cas_read/condition_not_met",
+      "operations": [
+        {
+          "method": "GET",
+          "summary": "Get cas read metrics",
+          "type": "int",
+          "nickname": "get_cas_read_metrics_condition_not_met",
+          "produces": [
+            "application/json"
+          ],
+          "parameters": []
+        }
+      ]
+    },
     {
       "path": "/storage_proxy/metrics/read/timeouts",
       "operations": [
         {
           "method": "GET",
           "summary": "Get read metrics",
-          "type": "long",
+          "type": "int",
           "nickname": "get_read_metrics_timeouts",
           "produces": [
             "application/json"
@@ -707,7 +707,7 @@
         {
           "method": "GET",
           "summary": "Get read metrics",
-          "type": "long",
+          "type": "int",
           "nickname": "get_read_metrics_unavailables",
           "produces": [
             "application/json"
@@ -791,36 +791,6 @@
         }
       ]
     },
-    {
-      "path": "/storage_proxy/metrics/cas_read/moving_average_histogram",
-      "operations": [
-        {
-          "method": "GET",
-          "summary": "Get CAS read rate and latency histogram",
-          "$ref": "#/utils/rate_moving_average_and_histogram",
-          "nickname": "get_cas_read_metrics_latency_histogram",
-          "produces": [
-            "application/json"
-          ],
-          "parameters": []
-        }
-      ]
-    },
-    {
-      "path": "/storage_proxy/metrics/view_write/moving_average_histogram",
-      "operations": [
-        {
-          "method": "GET",
-          "summary": "Get view write rate and latency histogram",
-          "$ref": "#/utils/rate_moving_average_and_histogram",
-          "nickname": "get_view_write_metrics_latency_histogram",
-          "produces": [
-            "application/json"
-          ],
-          "parameters": []
-        }
-      ]
-    },
     {
       "path": "/storage_proxy/metrics/range/moving_average_histogram",
       "operations": [
@@ -842,7 +812,7 @@
         {
           "method": "GET",
           "summary": "Get range metrics",
-          "type": "long",
+          "type": "int",
           "nickname": "get_range_metrics_timeouts",
           "produces": [
             "application/json"
@@ -857,7 +827,7 @@
         {
           "method": "GET",
           "summary": "Get range metrics",
-          "type": "long",
+          "type": "int",
           "nickname": "get_range_metrics_unavailables",
           "produces": [
             "application/json"
@@ -902,7 +872,7 @@
         {
           "method": "GET",
           "summary": "Get write metrics",
-          "type": "long",
+          "type": "int",
           "nickname": "get_write_metrics_timeouts",
           "produces": [
             "application/json"
@@ -917,7 +887,7 @@
         {
           "method": "GET",
           "summary": "Get write metrics",
-          "type": "long",
+          "type": "int",
           "nickname": "get_write_metrics_unavailables",
           "produces": [
             "application/json"
@@ -986,21 +956,6 @@
         }
       ]
     },
-    {
-      "path": "/storage_proxy/metrics/cas_write/moving_average_histogram",
-      "operations": [
-        {
-          "method": "GET",
-          "summary": "Get CAS write rate and latency histogram",
-          "$ref": "#/utils/rate_moving_average_and_histogram",
-          "nickname": "get_cas_write_metrics_latency_histogram",
-          "produces": [
-            "application/json"
-          ],
-          "parameters": []
-        }
-      ]
-    },
     {
          "path":"/storage_proxy/metrics/read/estimated_histogram/",
          "operations":[
@@ -1023,7 +978,7 @@
             {
                "method":"GET",
                "summary":"Get read latency",
-               "type": "long",
+               "type":"int",
                "nickname":"get_read_latency",
                "produces":[
                   "application/json"
@@ -1055,7 +1010,7 @@
             {
                "method":"GET",
                "summary":"Get write latency",
-               "type": "long",
+               "type":"int",
                "nickname":"get_write_latency",
                "produces":[
                   "application/json"
@@ -1087,7 +1042,7 @@
             {
                "method":"GET",
                "summary":"Get range latency",
-               "type": "long",
+               "type":"int",
                "nickname":"get_range_latency",
                "produces":[
                   "application/json"

api/api-doc/storage_service.json

@@ -458,7 +458,7 @@
             {
                "method":"GET",
                "summary":"Return the generation value for this node.",
-               "type": "long",
+               "type":"int",
                "nickname":"get_current_generation_number",
                "produces":[
                   "application/json"
@@ -582,15 +582,7 @@
                   },
                   {
                      "name":"kn",
-                     "description":"Comma seperated keyspaces name that their snapshot will be deleted",
-                     "required":false,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"query"
-                  },
-                  {
-                     "name":"cf",
-                     "description":"an optional table name that its snapshot will be deleted",
+                     "description":"Comma seperated keyspaces name to snapshot",
                      "required":false,
                      "allowMultiple":false,
                      "type":"string",
@@ -654,7 +646,7 @@
             {
                "method":"POST",
                "summary":"Trigger a cleanup of keys on a single keyspace",
-               "type": "long",
+               "type":"int",
                "nickname":"force_keyspace_cleanup",
                "produces":[
                   "application/json"
@@ -686,7 +678,7 @@
             {
                "method":"GET",
                "summary":"Scrub (deserialize + reserialize at the latest version, skipping bad rows if any) the given keyspace. If columnFamilies array is empty, all CFs are scrubbed. Scrubbed CFs will be snapshotted first, if disableSnapshot is false",
-               "type": "long",
+               "type":"int",
                "nickname":"scrub",
                "produces":[
                   "application/json"
@@ -734,7 +726,7 @@
             {
                "method":"GET",
                "summary":"Rewrite all sstables to the latest version. Unlike scrub, it doesn't skip bad rows and do not snapshot sstables first.",
-               "type": "long",
+               "type":"int",
                "nickname":"upgrade_sstables",
                "produces":[
                   "application/json"
@@ -808,7 +800,7 @@
                "summary":"Return an array with the ids of the currently active repairs",
                "type":"array",
                "items":{
-                  "type": "long"
+                  "type":"int"
                },
                "nickname":"get_active_repair_async",
                "produces":[
@@ -824,7 +816,7 @@
             {
                "method":"POST",
                "summary":"Invoke repair asynchronously. You can track repair progress by using the get supplying id",
-               "type": "long",
+               "type":"int",
                "nickname":"repair_async",
                "produces":[
                   "application/json"
@@ -955,7 +947,7 @@
                      "description":"The repair ID to check for status",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -1285,18 +1277,18 @@
                   },
                   {
                      "name":"dynamic_update_interval",
-                     "description":"interval in ms (default 100)",
+                     "description":"integer, in ms (default 100)",
                      "required":false,
                      "allowMultiple":false,
-                     "type":"long",
+                     "type":"integer",
                      "paramType":"query"
                   },
                   {
                      "name":"dynamic_reset_interval",
-                     "description":"interval in ms (default 600,000)",
+                     "description":"integer, in ms (default 600,000)",
                      "required":false,
                      "allowMultiple":false,
-                     "type":"long",
+                     "type":"integer",
                      "paramType":"query"
                   },
                   {
@@ -1501,7 +1493,7 @@
                      "description":"Stream throughput",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -1509,7 +1501,7 @@
             {
                "method":"GET",
                "summary":"Get stream throughput mb per sec",
-               "type": "long",
+               "type":"int",
                "nickname":"get_stream_throughput_mb_per_sec",
                "produces":[
                   "application/json"
@@ -1525,7 +1517,7 @@
             {
                "method":"GET",
                "summary":"get compaction throughput mb per sec",
-               "type": "long",
+               "type":"int",
                "nickname":"get_compaction_throughput_mb_per_sec",
                "produces":[
                   "application/json"
@@ -1547,7 +1539,7 @@
                      "description":"compaction throughput",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -1951,7 +1943,7 @@
             {
                "method":"GET",
                "summary":"Returns the threshold for warning of queries with many tombstones",
-               "type": "long",
+               "type":"int",
                "nickname":"get_tombstone_warn_threshold",
                "produces":[
                   "application/json"
@@ -1973,7 +1965,7 @@
                      "description":"tombstone debug threshold",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -1986,7 +1978,7 @@
             {
                "method":"GET",
                "summary":"",
-               "type": "long",
+               "type":"int",
                "nickname":"get_tombstone_failure_threshold",
                "produces":[
                   "application/json"
@@ -2008,7 +2000,7 @@
                      "description":"tombstone debug threshold",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -2021,7 +2013,7 @@
             {
                "method":"GET",
                "summary":"Returns the threshold for rejecting queries due to a large batch size",
-               "type": "long",
+               "type":"int",
                "nickname":"get_batch_size_failure_threshold",
                "produces":[
                   "application/json"
@@ -2043,7 +2035,7 @@
                      "description":"batch size debug threshold",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -2067,7 +2059,7 @@
                      "description":"throttle in kb",
                      "required":true,
                      "allowMultiple":false,
-                     "type": "long",
+                     "type":"int",
                      "paramType":"query"
                   }
                ]
@@ -2080,7 +2072,7 @@
             {
                "method":"GET",
                "summary":"Get load",
-               "type": "long",
+               "type":"int",
                "nickname":"get_metrics_load",
                "produces":[
                   "application/json"
@@ -2096,7 +2088,7 @@
             {
                "method":"GET",
                "summary":"Get exceptions",
-               "type": "long",
+               "type":"int",
                "nickname":"get_exceptions",
                "produces":[
                   "application/json"
@@ -2112,7 +2104,7 @@
             {
                "method":"GET",
                "summary":"Get total hints in progress",
-               "type": "long",
+               "type":"int",
                "nickname":"get_total_hints_in_progress",
                "produces":[
                   "application/json"
@@ -2128,7 +2120,7 @@
             {
                "method":"GET",
                "summary":"Get total hints",
-               "type": "long",
+               "type":"int",
                "nickname":"get_total_hints",
                "produces":[
                   "application/json"
@@ -2172,42 +2164,7 @@
                ]
             }
          ]
-      },
-      {
-         "path":"/storage_service/sstable_info",
-         "operations":[
-            {
-               "method":"GET",
-               "summary":"SSTable information",
-               "type":"array",
-               "items":{
-                  "type":"table_sstables"
-               },
-               "nickname":"sstable_info",
-               "produces":[
-                  "application/json"
-               ],
-               "parameters":[
-                  {
-                     "name":"keyspace",
-                     "description":"The keyspace",
-                     "required":false,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"query"
-                  },
-                  {
-                     "name":"cf",
-                     "description":"column family name",
-                     "required":false,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"query"
-                  }
-               ]
-            }
-         ]
-      }      
+      }
    ],
    "models":{
       "mapper":{
@@ -2367,92 +2324,6 @@
                "description":"The endpoint details"
             }
          }
-      },
-      "named_maps":{
-        "id":"named_maps",
-        "properties":{
-            "group":{
-                "type":"string"
-            },
-            "attributes":{
-                "type":"array",
-                "items":{
-                    "type":"mapper"
-                }
-            }
-        }
-      },
-      "sstable":{
-        "id":"sstable",
-        "properties":{
-            "size":{
-               "type":"long",
-               "description":"Total size in bytes of sstable"
-            },
-            "data_size":{
-                "type":"long",
-                "description":"The size in bytes on disk of data"
-            },
-            "index_size":{
-               "type":"long",
-               "description":"The size in bytes on disk of index"
-            },
-            "filter_size":{
-               "type":"long",
-               "description":"The size in bytes on disk of filter"
-            },
-            "timestamp":{
-                "type":"datetime",
-                "description":"File creation time"
-            },
-            "generation":{
-                "type":"long",
-                "description":"SSTable generation"
-            },
-            "level":{
-               "type":"long",
-               "description":"SSTable level"
-            },
-            "version":{
-               "type":"string",
-               "enum":[
-                  "ka", "la", "mc"
-               ],
-               "description":"SSTable version"
-            },
-            "properties":{
-                "type":"array",
-                "description":"SSTable attributes",
-                "items":{
-                    "type":"mapper"
-                }
-            },
-            "extended_properties":{
-                "type":"array",
-                "description":"SSTable extended attributes",
-                "items":{
-                    "type":"named_maps"
-                }
-            }
-        }
-      },
-      "table_sstables":{
-        "id":"table_sstables",
-        "description":"Per-table SSTable info and attributes",
-        "properties":{
-            "keyspace":{
-                "type":"string"
-            },
-            "table":{
-                "type":"string"
-            },
-            "sstables":{
-                "type":"array",
-                "items":{
-                    "$ref":"sstable"
-                }
-            }
-        }
       }
    }
 }

api/api-doc/stream_manager.json

@@ -32,7 +32,7 @@
             {
                "method":"GET",
                "summary":"Get number of active outbound streams",
-               "type": "long",
+               "type":"int",
                "nickname":"get_all_active_streams_outbound",
                "produces":[
                   "application/json"
@@ -48,7 +48,7 @@
             {
                "method":"GET",
                "summary":"Get total incoming bytes",
-               "type": "long",
+               "type":"int",
                "nickname":"get_total_incoming_bytes",
                "produces":[
                   "application/json"
@@ -72,7 +72,7 @@
             {
                "method":"GET",
                "summary":"Get all total incoming bytes",
-               "type": "long",
+               "type":"int",
                "nickname":"get_all_total_incoming_bytes",
                "produces":[
                   "application/json"
@@ -88,7 +88,7 @@
             {
                "method":"GET",
                "summary":"Get total outgoing bytes",
-               "type": "long",
+               "type":"int",
                "nickname":"get_total_outgoing_bytes",
                "produces":[
                   "application/json"
@@ -112,7 +112,7 @@
             {
                "method":"GET",
                "summary":"Get all total outgoing bytes",
-               "type": "long",
+               "type":"int",
                "nickname":"get_all_total_outgoing_bytes",
                "produces":[
                   "application/json"
@@ -154,7 +154,7 @@
                "description":"The peer"
             },
             "session_index":{
-               "type": "long",
+               "type":"int",
                "description":"The session index"
             },
             "connecting":{
@@ -211,7 +211,7 @@
                "description":"The ID"
             },
             "files":{
-               "type": "long",
+               "type":"int",
                "description":"Number of files to transfer. Can be 0 if nothing to transfer for some streaming request."
             },
             "total_size":{
@@ -242,7 +242,7 @@
                "description":"The peer address"
             },
             "session_index":{
-               "type": "long",
+               "type":"int",
                "description":"The session index"
             },
             "file_name":{

api/api-doc/system.json

@@ -52,21 +52,6 @@
             }
          ]
       },
-      {
-         "path":"/system/uptime_ms",
-         "operations":[
-            {
-               "method":"GET",
-               "summary":"Get system uptime, in milliseconds",
-               "type":"long",
-               "nickname":"get_system_uptime",
-               "produces":[
-                  "application/json"
-               ],
-               "parameters":[]
-            }
-         ]
-      },
       {
          "path":"/system/logger/{name}",
          "operations":[

api/api.cc

@@ -20,9 +20,9 @@
  */
 
 #include "api.hh"
-#include <seastar/http/file_handler.hh>
-#include <seastar/http/transformers.hh>
-#include <seastar/http/api_docs.hh>
+#include "http/file_handler.hh"
+#include "http/transformers.hh"
+#include "http/api_docs.hh"
 #include "storage_service.hh"
 #include "commitlog.hh"
 #include "gossiper.hh"
@@ -36,14 +36,11 @@
 #include "endpoint_snitch.hh"
 #include "compaction_manager.hh"
 #include "hinted_handoff.hh"
-#include "error_injection.hh"
-#include <seastar/http/exception.hh>
+#include "http/exception.hh"
 #include "stream_manager.hh"
 #include "system.hh"
 #include "api/config.hh"
 
-logging::logger apilog("api");
-
 namespace api {
 
 static std::unique_ptr<reply> exception_reply(std::exception_ptr eptr) {
@@ -69,19 +66,13 @@ future<> set_server_init(http_context& ctx) {
         rb->set_api_doc(r);
         rb02->set_api_doc(r);
         rb02->register_api_file(r, "swagger20_header");
+        set_config(rb02, ctx, r);
         rb->register_function(r, "system",
                 "The system related API");
         set_system(ctx, r);
     });
 }
 
-future<> set_server_config(http_context& ctx) {
-    auto rb02 = std::make_shared < api_registry_builder20 > (ctx.api_doc, "/v2");
-    return ctx.http_server.set_routes([&ctx, rb02](routes& r) {
-        set_config(rb02, ctx, r);
-    });
-}
-
 static future<> register_api(http_context& ctx, const sstring& api_name,
         const sstring api_desc,
         std::function<void(http_context& ctx, routes& r)> f) {
@@ -97,10 +88,6 @@ future<> set_server_storage_service(http_context& ctx) {
     return register_api(ctx, "storage_service", "The storage service API", set_storage_service);
 }
 
-future<> set_server_snapshot(http_context& ctx) {
-    return ctx.http_server.set_routes([&ctx] (routes& r) { set_snapshot(ctx, r); });
-}
-
 future<> set_server_snitch(http_context& ctx) {
     return register_api(ctx, "endpoint_snitch_info", "The endpoint snitch info API", set_endpoint_snitch);
 }
@@ -164,9 +151,6 @@ future<> set_server_done(http_context& ctx) {
         rb->register_function(r, "collectd",
                 "The collectd API");
         set_collectd(ctx, r);
-        rb->register_function(r, "error_injection",
-                "The error injection API");
-        set_error_injection(ctx, r);
     });
 }
 

api/api.hh

@@ -21,15 +21,13 @@
 
 #pragma once
 
-#include <seastar/json/json_elements.hh>
-#include <type_traits>
+#include "json/json_elements.hh"
 #include <boost/lexical_cast.hpp>
 #include <boost/algorithm/string/split.hpp>
 #include <boost/algorithm/string/classification.hpp>
-#include <boost/units/detail/utility.hpp>
 #include "api/api-doc/utils.json.hh"
 #include "utils/histogram.hh"
-#include <seastar/http/exception.hh>
+#include "http/exception.hh"
 #include "api_init.hh"
 #include "seastarx.hh"
 
@@ -218,42 +216,4 @@ std::vector<T> concat(std::vector<T> a, std::vector<T>&& b) {
     return a;
 }
 
-template <class T, class Base = T>
-class req_param {
-public:
-    sstring name;
-    sstring param;
-    T value;
-
-    req_param(const request& req, sstring name, T default_val) : name(name) {
-        param = req.get_query_param(name);
-        if (param.empty()) {
-            value = default_val;
-            return;
-        }
-        try {
-            // boost::lexical_cast does not use boolalpha. Converting a
-            // true/false throws exceptions. We don't want that.
-            if constexpr (std::is_same_v<Base, bool>) {
-                // Cannot use boolalpha because we (probably) want to
-                // accept 1 and 0 as well as true and false. And True. And fAlse.
-                std::transform(param.begin(), param.end(), param.begin(), ::tolower);
-                if (param == "true" || param == "1") {
-                    value = T(true);
-                } else if (param == "false" || param == "0") {
-                    value = T(false);
-                } else {
-                    throw boost::bad_lexical_cast{};
-                }
-            } else {
-                value = T{boost::lexical_cast<Base>(param)};
-            }
-        } catch (boost::bad_lexical_cast&) {
-            throw bad_param_exception(format("{} ({}): type error - should be {}", name, param, boost::units::detail::demangle(typeid(Base).name())));
-        }
-    }
-
-    operator T() const { return value; }
-};
-
 }

api/api_init.hh

@@ -19,12 +19,9 @@
  * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
  */
 #pragma once
-#include "database_fwd.hh"
+#include "database.hh"
 #include "service/storage_proxy.hh"
-#include <seastar/http/httpd.hh>
-
-namespace service { class load_meter; }
-namespace locator { class token_metadata; }
+#include "http/httpd.hh"
 
 namespace api {
 
@@ -34,21 +31,15 @@ struct http_context {
     httpd::http_server_control http_server;
     distributed<database>& db;
     distributed<service::storage_proxy>& sp;
-    service::load_meter& lmeter;
-    sharded<locator::token_metadata>& token_metadata;
-
     http_context(distributed<database>& _db,
-            distributed<service::storage_proxy>& _sp,
-            service::load_meter& _lm, sharded<locator::token_metadata>& _tm)
-            : db(_db), sp(_sp), lmeter(_lm), token_metadata(_tm) {
+            distributed<service::storage_proxy>& _sp)
+            : db(_db), sp(_sp) {
     }
 };
 
 future<> set_server_init(http_context& ctx);
-future<> set_server_config(http_context& ctx);
 future<> set_server_snitch(http_context& ctx);
 future<> set_server_storage_service(http_context& ctx);
-future<> set_server_snapshot(http_context& ctx);
 future<> set_server_gossip(http_context& ctx);
 future<> set_server_load_sstable(http_context& ctx);
 future<> set_server_messaging_service(http_context& ctx);

api/collectd.cc

@@ -21,8 +21,8 @@
 
 #include "collectd.hh"
 #include "api/api-doc/collectd.json.hh"
-#include <seastar/core/scollectd.hh>
-#include <seastar/core/scollectd_api.hh>
+#include "core/scollectd.hh"
+#include "core/scollectd_api.hh"
 #include "endian.h"
 #include <boost/range/irange.hpp>
 #include <regex>
@@ -64,7 +64,7 @@ static const char* str_to_regex(const sstring& v) {
 void set_collectd(http_context& ctx, routes& r) {
     cd::get_collectd.set(r, [&ctx](std::unique_ptr<request> req) {
 
-        auto id = ::make_shared<scollectd::type_instance_id>(req->param["pluginid"],
+        auto id = make_shared<scollectd::type_instance_id>(req->param["pluginid"],
                 req->get_query_param("instance"), req->get_query_param("type"),
                 req->get_query_param("type_instance"));
 

api/column_family.cc

@@ -22,14 +22,10 @@
 #include "column_family.hh"
 #include "api/api-doc/column_family.json.hh"
 #include <vector>
-#include <seastar/http/exception.hh>
+#include "http/exception.hh"
 #include "sstables/sstables.hh"
 #include "utils/estimated_histogram.hh"
 #include <algorithm>
-#include "db/system_keyspace_view_types.hh"
-#include "db/data_listeners.hh"
-
-extern logging::logger apilog;
 
 namespace api {
 using namespace httpd;
@@ -38,7 +34,7 @@ using namespace std;
 using namespace json;
 namespace cf = httpd::column_family_json;
 
-std::tuple<sstring, sstring> parse_fully_qualified_cf_name(sstring name) {
+const utils::UUID& get_uuid(const sstring& name, const database& db) {
     auto pos = name.find("%3A");
     size_t end;
     if (pos == sstring::npos) {
@@ -50,22 +46,14 @@ std::tuple<sstring, sstring> parse_fully_qualified_cf_name(sstring name) {
     } else {
         end = pos + 3;
     }
-    return std::make_tuple(name.substr(0, pos), name.substr(end));
-}
-
-const utils::UUID& get_uuid(const sstring& ks, const sstring& cf, const database& db) {
     try {
-        return db.find_uuid(ks, cf);
+        return db.find_uuid(name.substr(0, pos), name.substr(end));
     } catch (std::out_of_range& e) {
-        throw bad_param_exception(format("Column family '{}:{}' not found", ks, cf));
+        throw bad_param_exception("Column family '" + name.substr(0, pos) + ":"
+                + name.substr(end) + "' not found");
     }
 }
 
-const utils::UUID& get_uuid(const sstring& name, const database& db) {
-    auto [ks, cf] = parse_fully_qualified_cf_name(name);
-    return get_uuid(ks, cf, db);
-}
-
 future<> foreach_column_family(http_context& ctx, const sstring& name, function<void(column_family&)> f) {
     auto uuid = get_uuid(name, ctx.db.local());
 
@@ -75,28 +63,28 @@ future<> foreach_column_family(http_context& ctx, const sstring& name, function<
 }
 
 future<json::json_return_type>  get_cf_stats(http_context& ctx, const sstring& name,
-        int64_t column_family_stats::*f) {
+        int64_t column_family::stats::*f) {
     return map_reduce_cf(ctx, name, int64_t(0), [f](const column_family& cf) {
         return cf.get_stats().*f;
     }, std::plus<int64_t>());
 }
 
 future<json::json_return_type>  get_cf_stats(http_context& ctx,
-        int64_t column_family_stats::*f) {
+        int64_t column_family::stats::*f) {
     return map_reduce_cf(ctx, int64_t(0), [f](const column_family& cf) {
         return cf.get_stats().*f;
     }, std::plus<int64_t>());
 }
 
 static future<json::json_return_type>  get_cf_stats_count(http_context& ctx, const sstring& name,
-        utils::timed_rate_moving_average_and_histogram column_family_stats::*f) {
+        utils::timed_rate_moving_average_and_histogram column_family::stats::*f) {
     return map_reduce_cf(ctx, name, int64_t(0), [f](const column_family& cf) {
         return (cf.get_stats().*f).hist.count;
     }, std::plus<int64_t>());
 }
 
 static future<json::json_return_type>  get_cf_stats_sum(http_context& ctx, const sstring& name,
-        utils::timed_rate_moving_average_and_histogram column_family_stats::*f) {
+        utils::timed_rate_moving_average_and_histogram column_family::stats::*f) {
     auto uuid = get_uuid(name, ctx.db.local());
     return ctx.db.map_reduce0([uuid, f](database& db) {
         // Histograms information is sample of the actual load
@@ -112,14 +100,14 @@ static future<json::json_return_type>  get_cf_stats_sum(http_context& ctx, const
 
 
 static future<json::json_return_type>  get_cf_stats_count(http_context& ctx,
-        utils::timed_rate_moving_average_and_histogram column_family_stats::*f) {
+        utils::timed_rate_moving_average_and_histogram column_family::stats::*f) {
     return map_reduce_cf(ctx, int64_t(0), [f](const column_family& cf) {
         return (cf.get_stats().*f).hist.count;
     }, std::plus<int64_t>());
 }
 
 static future<json::json_return_type>  get_cf_histogram(http_context& ctx, const sstring& name,
-        utils::timed_rate_moving_average_and_histogram column_family_stats::*f) {
+        utils::timed_rate_moving_average_and_histogram column_family::stats::*f) {
     utils::UUID uuid = get_uuid(name, ctx.db.local());
     return ctx.db.map_reduce0([f, uuid](const database& p) {
         return (p.find_column_family(uuid).get_stats().*f).hist;},
@@ -130,7 +118,7 @@ static future<json::json_return_type>  get_cf_histogram(http_context& ctx, const
     });
 }
 
-static future<json::json_return_type> get_cf_histogram(http_context& ctx, utils::timed_rate_moving_average_and_histogram column_family_stats::*f) {
+static future<json::json_return_type> get_cf_histogram(http_context& ctx, utils::timed_rate_moving_average_and_histogram column_family::stats::*f) {
     std::function<utils::ihistogram(const database&)> fun = [f] (const database& db)  {
         utils::ihistogram res;
         for (auto i : db.get_column_families()) {
@@ -146,7 +134,7 @@ static future<json::json_return_type> get_cf_histogram(http_context& ctx, utils:
 }
 
 static future<json::json_return_type>  get_cf_rate_and_histogram(http_context& ctx, const sstring& name,
-        utils::timed_rate_moving_average_and_histogram column_family_stats::*f) {
+        utils::timed_rate_moving_average_and_histogram column_family::stats::*f) {
     utils::UUID uuid = get_uuid(name, ctx.db.local());
     return ctx.db.map_reduce0([f, uuid](const database& p) {
         return (p.find_column_family(uuid).get_stats().*f).rate();},
@@ -157,7 +145,7 @@ static future<json::json_return_type>  get_cf_rate_and_histogram(http_context& c
     });
 }
 
-static future<json::json_return_type> get_cf_rate_and_histogram(http_context& ctx, utils::timed_rate_moving_average_and_histogram column_family_stats::*f) {
+static future<json::json_return_type> get_cf_rate_and_histogram(http_context& ctx, utils::timed_rate_moving_average_and_histogram column_family::stats::*f) {
     std::function<utils::rate_moving_average_and_histogram(const database&)> fun = [f] (const database& db)  {
         utils::rate_moving_average_and_histogram res;
         for (auto i : db.get_column_families()) {
@@ -178,27 +166,27 @@ static future<json::json_return_type> get_cf_unleveled_sstables(http_context& ct
     }, std::plus<int64_t>());
 }
 
-static int64_t min_partition_size(column_family& cf) {
+static int64_t min_row_size(column_family& cf) {
     int64_t res = INT64_MAX;
     for (auto i: *cf.get_sstables() ) {
-        res = std::min(res, i->get_stats_metadata().estimated_partition_size.min());
+        res = std::min(res, i->get_stats_metadata().estimated_row_size.min());
     }
     return (res == INT64_MAX) ? 0 : res;
 }
 
-static int64_t max_partition_size(column_family& cf) {
+static int64_t max_row_size(column_family& cf) {
     int64_t res = 0;
     for (auto i: *cf.get_sstables() ) {
-        res = std::max(i->get_stats_metadata().estimated_partition_size.max(), res);
+        res = std::max(i->get_stats_metadata().estimated_row_size.max(), res);
     }
     return res;
 }
 
-static integral_ratio_holder mean_partition_size(column_family& cf) {
+static integral_ratio_holder mean_row_size(column_family& cf) {
     integral_ratio_holder res;
     for (auto i: *cf.get_sstables() ) {
-        auto c = i->get_stats_metadata().estimated_partition_size.count();
-        res.sub += i->get_stats_metadata().estimated_partition_size.mean() * c;
+        auto c = i->get_stats_metadata().estimated_row_size.count();
+        res.sub += i->get_stats_metadata().estimated_row_size.mean() * c;
         res.total += c;
     }
     return res;
@@ -254,11 +242,12 @@ class sum_ratio {
     uint64_t _n = 0;
     T _total = 0;
 public:
-    void operator()(T value) {
+    future<> operator()(T value) {
         if (value > 0) {
             _total += value;
             _n++;
         }
+        return make_ready_future<>();
     }
     // Returns average value of all registered ratios.
     T get() && {
@@ -407,31 +396,29 @@ void set_column_family(http_context& ctx, routes& r) {
     });
 
     cf::get_memtable_switch_count.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_stats(ctx,req->param["name"] ,&column_family_stats::memtable_switch_count);
+        return get_cf_stats(ctx,req->param["name"] ,&column_family::stats::memtable_switch_count);
     });
 
     cf::get_all_memtable_switch_count.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_stats(ctx, &column_family_stats::memtable_switch_count);
+        return get_cf_stats(ctx, &column_family::stats::memtable_switch_count);
     });
 
-    // FIXME: this refers to partitions, not rows.
     cf::get_estimated_row_size_histogram.set(r, [&ctx] (std::unique_ptr<request> req) {
         return map_reduce_cf(ctx, req->param["name"], utils::estimated_histogram(0), [](column_family& cf) {
             utils::estimated_histogram res(0);
             for (auto i: *cf.get_sstables() ) {
-                res.merge(i->get_stats_metadata().estimated_partition_size);
+                res.merge(i->get_stats_metadata().estimated_row_size);
             }
             return res;
         },
         utils::estimated_histogram_merge, utils_json::estimated_histogram());
     });
 
-    // FIXME: this refers to partitions, not rows.
     cf::get_estimated_row_count.set(r, [&ctx] (std::unique_ptr<request> req) {
         return map_reduce_cf(ctx, req->param["name"], int64_t(0), [](column_family& cf) {
             uint64_t res = 0;
             for (auto i: *cf.get_sstables() ) {
-                res += i->get_stats_metadata().estimated_partition_size.count();
+                res += i->get_stats_metadata().estimated_row_size.count();
             }
             return res;
         },
@@ -456,67 +443,67 @@ void set_column_family(http_context& ctx, routes& r) {
     });
 
     cf::get_pending_flushes.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_stats(ctx,req->param["name"] ,&column_family_stats::pending_flushes);
+        return get_cf_stats(ctx,req->param["name"] ,&column_family::stats::pending_flushes);
     });
 
     cf::get_all_pending_flushes.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_stats(ctx, &column_family_stats::pending_flushes);
+        return get_cf_stats(ctx, &column_family::stats::pending_flushes);
     });
 
     cf::get_read.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_stats_count(ctx,req->param["name"] ,&column_family_stats::reads);
+        return get_cf_stats_count(ctx,req->param["name"] ,&column_family::stats::reads);
     });
 
     cf::get_all_read.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_stats_count(ctx, &column_family_stats::reads);
+        return get_cf_stats_count(ctx, &column_family::stats::reads);
     });
 
     cf::get_write.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_stats_count(ctx, req->param["name"] ,&column_family_stats::writes);
+        return get_cf_stats_count(ctx, req->param["name"] ,&column_family::stats::writes);
     });
 
     cf::get_all_write.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_stats_count(ctx, &column_family_stats::writes);
+        return get_cf_stats_count(ctx, &column_family::stats::writes);
     });
 
     cf::get_read_latency_histogram_depricated.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_histogram(ctx, req->param["name"], &column_family_stats::reads);
+        return get_cf_histogram(ctx, req->param["name"], &column_family::stats::reads);
     });
 
     cf::get_read_latency_histogram.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_rate_and_histogram(ctx, req->param["name"], &column_family_stats::reads);
+        return get_cf_rate_and_histogram(ctx, req->param["name"], &column_family::stats::reads);
     });
 
     cf::get_read_latency.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_stats_sum(ctx,req->param["name"] ,&column_family_stats::reads);
+        return get_cf_stats_sum(ctx,req->param["name"] ,&column_family::stats::reads);
     });
 
     cf::get_write_latency.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_stats_sum(ctx, req->param["name"] ,&column_family_stats::writes);
+        return get_cf_stats_sum(ctx, req->param["name"] ,&column_family::stats::writes);
     });
 
     cf::get_all_read_latency_histogram_depricated.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_histogram(ctx, &column_family_stats::writes);
+        return get_cf_histogram(ctx, &column_family::stats::writes);
     });
 
     cf::get_all_read_latency_histogram.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_rate_and_histogram(ctx, &column_family_stats::writes);
+        return get_cf_rate_and_histogram(ctx, &column_family::stats::writes);
     });
 
     cf::get_write_latency_histogram_depricated.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_histogram(ctx, req->param["name"], &column_family_stats::writes);
+        return get_cf_histogram(ctx, req->param["name"], &column_family::stats::writes);
     });
 
     cf::get_write_latency_histogram.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_rate_and_histogram(ctx, req->param["name"], &column_family_stats::writes);
+        return get_cf_rate_and_histogram(ctx, req->param["name"], &column_family::stats::writes);
     });
 
     cf::get_all_write_latency_histogram_depricated.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_histogram(ctx, &column_family_stats::writes);
+        return get_cf_histogram(ctx, &column_family::stats::writes);
     });
 
     cf::get_all_write_latency_histogram.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_rate_and_histogram(ctx, &column_family_stats::writes);
+        return get_cf_rate_and_histogram(ctx, &column_family::stats::writes);
     });
 
     cf::get_pending_compactions.set(r, [&ctx] (std::unique_ptr<request> req) {
@@ -532,11 +519,11 @@ void set_column_family(http_context& ctx, routes& r) {
     });
 
     cf::get_live_ss_table_count.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_stats(ctx, req->param["name"], &column_family_stats::live_sstable_count);
+        return get_cf_stats(ctx, req->param["name"], &column_family::stats::live_sstable_count);
     });
 
     cf::get_all_live_ss_table_count.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_stats(ctx, &column_family_stats::live_sstable_count);
+        return get_cf_stats(ctx, &column_family::stats::live_sstable_count);
     });
 
     cf::get_unleveled_sstables.set(r, [&ctx] (std::unique_ptr<request> req) {
@@ -559,36 +546,30 @@ void set_column_family(http_context& ctx, routes& r) {
         return sum_sstable(ctx, true);
     });
 
-    // FIXME: this refers to partitions, not rows.
     cf::get_min_row_size.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return map_reduce_cf(ctx, req->param["name"], INT64_MAX, min_partition_size, min_int64);
+        return map_reduce_cf(ctx, req->param["name"], INT64_MAX, min_row_size, min_int64);
     });
 
-    // FIXME: this refers to partitions, not rows.
     cf::get_all_min_row_size.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return map_reduce_cf(ctx, INT64_MAX, min_partition_size, min_int64);
+        return map_reduce_cf(ctx, INT64_MAX, min_row_size, min_int64);
     });
 
-    // FIXME: this refers to partitions, not rows.
     cf::get_max_row_size.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return map_reduce_cf(ctx, req->param["name"], int64_t(0), max_partition_size, max_int64);
+        return map_reduce_cf(ctx, req->param["name"], int64_t(0), max_row_size, max_int64);
     });
 
-    // FIXME: this refers to partitions, not rows.
     cf::get_all_max_row_size.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return map_reduce_cf(ctx, int64_t(0), max_partition_size, max_int64);
+        return map_reduce_cf(ctx, int64_t(0), max_row_size, max_int64);
     });
 
-    // FIXME: this refers to partitions, not rows.
     cf::get_mean_row_size.set(r, [&ctx] (std::unique_ptr<request> req) {
         // Cassandra 3.x mean values are truncated as integrals.
-        return map_reduce_cf(ctx, req->param["name"], integral_ratio_holder(), mean_partition_size, std::plus<integral_ratio_holder>());
+        return map_reduce_cf(ctx, req->param["name"], integral_ratio_holder(), mean_row_size, std::plus<integral_ratio_holder>());
     });
 
-    // FIXME: this refers to partitions, not rows.
     cf::get_all_mean_row_size.set(r, [&ctx] (std::unique_ptr<request> req) {
         // Cassandra 3.x mean values are truncated as integrals.
-        return map_reduce_cf(ctx, integral_ratio_holder(), mean_partition_size, std::plus<integral_ratio_holder>());
+        return map_reduce_cf(ctx, integral_ratio_holder(), mean_row_size, std::plus<integral_ratio_holder>());
     });
 
     cf::get_bloom_filter_false_positives.set(r, [&ctx] (std::unique_ptr<request> req) {
@@ -795,25 +776,25 @@ void set_column_family(http_context& ctx, routes& r) {
 
     });
 
-    cf::get_cas_prepare.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return map_reduce_cf(ctx, req->param["name"], utils::estimated_histogram(0), [](column_family& cf) {
-            return cf.get_stats().estimated_cas_prepare;
-        },
-        utils::estimated_histogram_merge, utils_json::estimated_histogram());
+    cf::get_cas_prepare.set(r, [] (std::unique_ptr<request> req) {
+        //TBD
+        unimplemented();
+        //auto id = get_uuid(req->param["name"], ctx.db.local());
+        return make_ready_future<json::json_return_type>(0);
     });
 
-    cf::get_cas_propose.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return map_reduce_cf(ctx, req->param["name"], utils::estimated_histogram(0), [](column_family& cf) {
-            return cf.get_stats().estimated_cas_propose;
-        },
-        utils::estimated_histogram_merge, utils_json::estimated_histogram());
+    cf::get_cas_propose.set(r, [] (std::unique_ptr<request> req) {
+        //TBD
+        unimplemented();
+        //auto id = get_uuid(req->param["name"], ctx.db.local());
+        return make_ready_future<json::json_return_type>(0);
     });
 
-    cf::get_cas_commit.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return map_reduce_cf(ctx, req->param["name"], utils::estimated_histogram(0), [](column_family& cf) {
-            return cf.get_stats().estimated_cas_commit;
-        },
-        utils::estimated_histogram_merge, utils_json::estimated_histogram());
+    cf::get_cas_commit.set(r, [] (std::unique_ptr<request> req) {
+        //TBD
+        unimplemented();
+        //auto id = get_uuid(req->param["name"], ctx.db.local());
+        return make_ready_future<json::json_return_type>(0);
     });
 
     cf::get_sstables_per_read_histogram.set(r, [&ctx] (std::unique_ptr<request> req) {
@@ -824,11 +805,11 @@ void set_column_family(http_context& ctx, routes& r) {
     });
 
     cf::get_tombstone_scanned_histogram.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_histogram(ctx, req->param["name"], &column_family_stats::tombstone_scanned);
+        return get_cf_histogram(ctx, req->param["name"], &column_family::stats::tombstone_scanned);
     });
 
     cf::get_live_scanned_histogram.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return get_cf_histogram(ctx, req->param["name"], &column_family_stats::live_scanned);
+        return get_cf_histogram(ctx, req->param["name"], &column_family::stats::live_scanned);
     });
 
     cf::get_col_update_time_delta_histogram.set(r, [] (std::unique_ptr<request> req) {
@@ -846,28 +827,13 @@ void set_column_family(http_context& ctx, routes& r) {
         return true;
     });
 
-    cf::get_built_indexes.set(r, [&ctx](std::unique_ptr<request> req) {
-        auto [ks, cf_name] = parse_fully_qualified_cf_name(req->param["name"]);
-        return db::system_keyspace::load_view_build_progress().then([ks, cf_name, &ctx](const std::vector<db::system_keyspace::view_build_progress>& vb) mutable {
-            std::set<sstring> vp;
-            for (auto b : vb) {
-                if (b.view.first == ks) {
-                    vp.insert(b.view.second);
-                }
-            }
-            std::vector<sstring> res;
-            auto uuid = get_uuid(ks, cf_name, ctx.db.local());
-            column_family& cf = ctx.db.local().find_column_family(uuid);
-            res.reserve(cf.get_index_manager().list_indexes().size());
-            for (auto&& i : cf.get_index_manager().list_indexes()) {
-                if (vp.find(secondary_index::index_table_name(i.metadata().name())) == vp.end()) {
-                    res.emplace_back(i.metadata().name());
-                }
-            }
-            return make_ready_future<json::json_return_type>(res);
-        });
+    cf::get_built_indexes.set(r, [](const_req) {
+        // FIXME
+        // Currently there are no index support
+        return std::vector<sstring>();
     });
 
+
     cf::get_compression_metadata_off_heap_memory_used.set(r, [](const_req) {
         // FIXME
         // Currently there are no information on the compression
@@ -954,55 +920,5 @@ void set_column_family(http_context& ctx, routes& r) {
             return make_ready_future<json::json_return_type>(container_to_vec(res));
         });
     });
-
-    cf::toppartitions.set(r, [&ctx] (std::unique_ptr<request> req) {
-        auto name_param = req->param["name"];
-        auto [ks, cf] = parse_fully_qualified_cf_name(name_param);
-
-        api::req_param<std::chrono::milliseconds, unsigned> duration{*req, "duration", 1000ms};
-        api::req_param<unsigned> capacity(*req, "capacity", 256);
-        api::req_param<unsigned> list_size(*req, "list_size", 10);
-
-        apilog.info("toppartitions query: name={} duration={} list_size={} capacity={}",
-            name_param, duration.param, list_size.param, capacity.param);
-
-        return seastar::do_with(db::toppartitions_query(ctx.db, ks, cf, duration.value, list_size, capacity), [&ctx](auto& q) {
-            return q.scatter().then([&q] {
-                return sleep(q.duration()).then([&q] {
-                    return q.gather(q.capacity()).then([&q] (auto topk_results) {
-                        apilog.debug("toppartitions query: processing results");
-                        cf::toppartitions_query_results results;
-
-                        for (auto& d: topk_results.read.top(q.list_size())) {
-                            cf::toppartitions_record r;
-                            r.partition = sstring(d.item);
-                            r.count = d.count;
-                            r.error = d.error;
-                            results.read.push(r);
-                        }
-                        for (auto& d: topk_results.write.top(q.list_size())) {
-                            cf::toppartitions_record r;
-                            r.partition = sstring(d.item);
-                            r.count = d.count;
-                            r.error = d.error;
-                            results.write.push(r);
-                        }
-                        return make_ready_future<json::json_return_type>(results);
-                    });
-                });
-            });
-        });
-    });
-
-    cf::force_major_compaction.set(r, [&ctx](std::unique_ptr<request> req) {
-        if (req->get_query_param("split_output") != "") {
-            fail(unimplemented::cause::API);
-        }
-        return foreach_column_family(ctx, req->param["name"], [](column_family &cf) {
-            return cf.compact_all_sstables();
-        }).then([] {
-            return make_ready_future<json::json_return_type>(json_void());
-        });
-    });
 }
 }

api/column_family.hh

@@ -24,7 +24,6 @@
 #include "api.hh"
 #include "api/api-doc/column_family.json.hh"
 #include "database.hh"
-#include <seastar/core/future-util.hh>
 #include <any>
 
 namespace api {
@@ -39,14 +38,14 @@ template<class Mapper, class I, class Reducer>
 future<I> map_reduce_cf_raw(http_context& ctx, const sstring& name, I init,
         Mapper mapper, Reducer reducer) {
     auto uuid = get_uuid(name, ctx.db.local());
-    using mapper_type = std::function<std::unique_ptr<std::any>(database&)>;
-    using reducer_type = std::function<std::unique_ptr<std::any>(std::unique_ptr<std::any>, std::unique_ptr<std::any>)>;
+    using mapper_type = std::function<std::any (database&)>;
+    using reducer_type = std::function<std::any (std::any, std::any)>;
     return ctx.db.map_reduce0(mapper_type([mapper, uuid](database& db) {
-        return std::make_unique<std::any>(I(mapper(db.find_column_family(uuid))));
-    }), std::make_unique<std::any>(std::move(init)), reducer_type([reducer = std::move(reducer)] (std::unique_ptr<std::any> a, std::unique_ptr<std::any> b) mutable {
-        return std::make_unique<std::any>(I(reducer(std::any_cast<I>(std::move(*a)), std::any_cast<I>(std::move(*b)))));
-    })).then([] (std::unique_ptr<std::any> r) {
-        return std::any_cast<I>(std::move(*r));
+        return I(mapper(db.find_column_family(uuid)));
+    }), std::any(std::move(init)), reducer_type([reducer = std::move(reducer)] (std::any a, std::any b) mutable {
+        return I(reducer(std::any_cast<I>(std::move(a)), std::any_cast<I>(std::move(b))));
+    })).then([] (std::any r) {
+        return std::any_cast<I>(std::move(r));
     });
 }
 
@@ -70,32 +69,30 @@ future<json::json_return_type> map_reduce_cf(http_context& ctx, const sstring& n
 
 struct map_reduce_column_families_locally {
     std::any init;
-    std::function<std::unique_ptr<std::any>(column_family&)> mapper;
-    std::function<std::unique_ptr<std::any>(std::unique_ptr<std::any>, std::unique_ptr<std::any>)> reducer;
-    future<std::unique_ptr<std::any>> operator()(database& db) const {
-        auto res = seastar::make_lw_shared<std::unique_ptr<std::any>>(std::make_unique<std::any>(init));
-        return do_for_each(db.get_column_families(), [res, this](const std::pair<utils::UUID, seastar::lw_shared_ptr<table>>& i) {
-            *res = std::move(reducer(std::move(*res), mapper(*i.second.get())));
-        }).then([res] {
-            return std::move(*res);
-        });
+    std::function<std::any (column_family&)> mapper;
+    std::function<std::any (std::any, std::any)> reducer;
+    std::any operator()(database& db) const {
+        auto res = init;
+        for (auto i : db.get_column_families()) {
+            res = reducer(res, mapper(*i.second.get()));
+        }
+        return res;
     }
 };
 
 template<class Mapper, class I, class Reducer>
 future<I> map_reduce_cf_raw(http_context& ctx, I init,
         Mapper mapper, Reducer reducer) {
-    using mapper_type = std::function<std::unique_ptr<std::any>(column_family&)>;
-    using reducer_type = std::function<std::unique_ptr<std::any>(std::unique_ptr<std::any>, std::unique_ptr<std::any>)>;
+    using mapper_type = std::function<std::any (column_family&)>;
+    using reducer_type = std::function<std::any (std::any, std::any)>;
     auto wrapped_mapper = mapper_type([mapper = std::move(mapper)] (column_family& cf) mutable {
-        return std::make_unique<std::any>(I(mapper(cf)));
+        return I(mapper(cf));
     });
-    auto wrapped_reducer = reducer_type([reducer = std::move(reducer)] (std::unique_ptr<std::any> a, std::unique_ptr<std::any> b) mutable {
-        return std::make_unique<std::any>(I(reducer(std::any_cast<I>(std::move(*a)), std::any_cast<I>(std::move(*b)))));
+    auto wrapped_reducer = reducer_type([reducer = std::move(reducer)] (std::any a, std::any b) mutable {
+        return I(reducer(std::any_cast<I>(std::move(a)), std::any_cast<I>(std::move(b))));
     });
-    return ctx.db.map_reduce0(map_reduce_column_families_locally{init,
-            std::move(wrapped_mapper), wrapped_reducer}, std::make_unique<std::any>(init), wrapped_reducer).then([] (std::unique_ptr<std::any> res) {
-        return std::any_cast<I>(std::move(*res));
+    return ctx.db.map_reduce0(map_reduce_column_families_locally{init, std::move(wrapped_mapper), wrapped_reducer}, std::any(init), wrapped_reducer).then([] (std::any res) {
+        return std::any_cast<I>(std::move(res));
     });
 }
 
@@ -109,9 +106,9 @@ future<json::json_return_type> map_reduce_cf(http_context& ctx, I init,
 }
 
 future<json::json_return_type>  get_cf_stats(http_context& ctx, const sstring& name,
-        int64_t column_family_stats::*f);
+        int64_t column_family::stats::*f);
 
 future<json::json_return_type>  get_cf_stats(http_context& ctx,
-        int64_t column_family_stats::*f);
+        int64_t column_family::stats::*f);
 
 }

api/commitlog.cc

@@ -22,16 +22,15 @@
 #include "commitlog.hh"
 #include <db/commitlog/commitlog.hh>
 #include "api/api-doc/commitlog.json.hh"
-#include "database.hh"
 #include <vector>
 
 namespace api {
 
-template<typename T>
-static auto acquire_cl_metric(http_context& ctx, std::function<T (db::commitlog*)> func) {
-    typedef T ret_type;
+template<typename Func>
+static auto acquire_cl_metric(http_context& ctx, Func&& func) {
+    typedef std::result_of_t<Func(db::commitlog *)> ret_type;
 
-    return ctx.db.map_reduce0([func = std::move(func)](database& db) {
+    return ctx.db.map_reduce0([func = std::forward<Func>(func)](database& db) {
         if (db.commitlog() == nullptr) {
             return make_ready_future<ret_type>();
         }
@@ -64,15 +63,15 @@ void set_commitlog(http_context& ctx, routes& r) {
     });
 
     httpd::commitlog_json::get_completed_tasks.set(r, [&ctx](std::unique_ptr<request> req) {
-        return acquire_cl_metric<uint64_t>(ctx, std::bind(&db::commitlog::get_completed_tasks, std::placeholders::_1));
+        return acquire_cl_metric(ctx, std::bind(&db::commitlog::get_completed_tasks, std::placeholders::_1));
     });
 
     httpd::commitlog_json::get_pending_tasks.set(r, [&ctx](std::unique_ptr<request> req) {
-        return acquire_cl_metric<uint64_t>(ctx, std::bind(&db::commitlog::get_pending_tasks, std::placeholders::_1));
+        return acquire_cl_metric(ctx, std::bind(&db::commitlog::get_pending_tasks, std::placeholders::_1));
     });
 
     httpd::commitlog_json::get_total_commit_log_size.set(r, [&ctx](std::unique_ptr<request> req) {
-        return acquire_cl_metric<uint64_t>(ctx, std::bind(&db::commitlog::get_total_size, std::placeholders::_1));
+        return acquire_cl_metric(ctx, std::bind(&db::commitlog::get_total_size, std::placeholders::_1));
     });
 }
 

api/compaction_manager.cc

@@ -24,7 +24,6 @@
 #include "api/api-doc/compaction_manager.json.hh"
 #include "db/system_keyspace.hh"
 #include "column_family.hh"
-#include <utility>
 
 namespace api {
 
@@ -39,16 +38,6 @@ static future<json::json_return_type> get_cm_stats(http_context& ctx,
         return make_ready_future<json::json_return_type>(res);
     });
 }
-static std::unordered_map<std::pair<sstring, sstring>, uint64_t, utils::tuple_hash> sum_pending_tasks(std::unordered_map<std::pair<sstring, sstring>, uint64_t, utils::tuple_hash>&& a,
-        const std::unordered_map<std::pair<sstring, sstring>, uint64_t, utils::tuple_hash>& b) {
-    for (auto&& i : b) {
-        if (i.second) {
-            a[i.first] += i.second;
-        }
-    }
-    return std::move(a);
-}
-
 
 void set_compaction_manager(http_context& ctx, routes& r) {
     cm::get_compactions.set(r, [&ctx] (std::unique_ptr<request> req) {
@@ -58,8 +47,8 @@ void set_compaction_manager(http_context& ctx, routes& r) {
 
             for (const auto& c : cm.get_compactions()) {
                 cm::summary s;
-                s.ks = c->ks_name;
-                s.cf = c->cf_name;
+                s.ks = c->ks;
+                s.cf = c->cf;
                 s.unit = "keys";
                 s.task_type = sstables::compaction_name(c->type);
                 s.completed = c->total_keys_written;
@@ -72,32 +61,6 @@ void set_compaction_manager(http_context& ctx, routes& r) {
         });
     });
 
-    cm::get_pending_tasks_by_table.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return ctx.db.map_reduce0([&ctx](database& db) {
-            return do_with(std::unordered_map<std::pair<sstring, sstring>, uint64_t, utils::tuple_hash>(), [&ctx, &db](std::unordered_map<std::pair<sstring, sstring>, uint64_t, utils::tuple_hash>& tasks) {
-                return do_for_each(db.get_column_families(), [&tasks](const std::pair<utils::UUID, seastar::lw_shared_ptr<table>>& i) {
-                    table& cf = *i.second.get();
-                    tasks[std::make_pair(cf.schema()->ks_name(), cf.schema()->cf_name())] = cf.get_compaction_strategy().estimated_pending_compactions(cf);
-                    return make_ready_future<>();
-                }).then([&tasks] {
-                    return std::move(tasks);
-                });
-            });
-        }, std::unordered_map<std::pair<sstring, sstring>, uint64_t, utils::tuple_hash>(), sum_pending_tasks).then(
-                [](const std::unordered_map<std::pair<sstring, sstring>, uint64_t, utils::tuple_hash>& task_map) {
-            std::vector<cm::pending_compaction> res;
-            res.reserve(task_map.size());
-            for (auto i : task_map) {
-                cm::pending_compaction task;
-                task.ks = i.first.first;
-                task.cf = i.first.second;
-                task.task = i.second;
-                res.emplace_back(std::move(task));
-            }
-            return make_ready_future<json::json_return_type>(res);
-        });
-    });
-
     cm::force_user_defined_compaction.set(r, [] (std::unique_ptr<request> req) {
         //TBD
         // FIXME
@@ -140,37 +103,29 @@ void set_compaction_manager(http_context& ctx, routes& r) {
     });
 
     cm::get_compaction_history.set(r, [] (std::unique_ptr<request> req) {
-        std::function<future<>(output_stream<char>&&)> f = [](output_stream<char>&& s) {
-            return do_with(output_stream<char>(std::move(s)), true, [] (output_stream<char>& s, bool& first){
-                return s.write("[").then([&s, &first] {
-                    return db::system_keyspace::get_compaction_history([&s, &first](const db::system_keyspace::compaction_history_entry& entry) mutable {
-                        cm::history h;
-                        h.id = entry.id.to_sstring();
-                        h.ks = std::move(entry.ks);
-                        h.cf = std::move(entry.cf);
-                        h.compacted_at = entry.compacted_at;
-                        h.bytes_in = entry.bytes_in;
-                        h.bytes_out =  entry.bytes_out;
-                        for (auto it : entry.rows_merged) {
-                            httpd::compaction_manager_json::row_merged e;
-                            e.key = it.first;
-                            e.value = it.second;
-                            h.rows_merged.push(std::move(e));
-                        }
-                        auto fut = first ? make_ready_future<>() : s.write(", ");
-                        first = false;
-                        return fut.then([&s, h = std::move(h)] {
-                            return formatter::write(s, h);
-                        });
-                    }).then([&s] {
-                        return s.write("]").then([&s] {
-                            return s.close();
-                        });
-                    });
-                });
-            });
-        };
-        return make_ready_future<json::json_return_type>(std::move(f));
+        return db::system_keyspace::get_compaction_history().then([] (std::vector<db::system_keyspace::compaction_history_entry> history) {
+            std::vector<cm::history> res;
+            res.reserve(history.size());
+
+            for (auto& entry : history) {
+                cm::history h;
+                h.id = entry.id.to_sstring();
+                h.ks = std::move(entry.ks);
+                h.cf = std::move(entry.cf);
+                h.compacted_at = entry.compacted_at;
+                h.bytes_in = entry.bytes_in;
+                h.bytes_out =  entry.bytes_out;
+                for (auto it : entry.rows_merged) {
+                    httpd::compaction_manager_json::row_merged e;
+                    e.key = it.first;
+                    e.value = it.second;
+                    h.rows_merged.push(std::move(e));
+                }
+                res.push_back(std::move(h));
+            }
+
+            return make_ready_future<json::json_return_type>(res);
+        });
     });
 
     cm::get_compaction_info.set(r, [] (std::unique_ptr<request> req) {

api/config.cc

@@ -22,7 +22,6 @@
 #include "api/config.hh"
 #include "api/api-doc/config.json.hh"
 #include "db/config.hh"
-#include "database.hh"
 #include <sstream>
 #include <boost/algorithm/string/replace.hpp>
 
@@ -44,14 +43,14 @@ json::json_return_type get_json_return_type(const db::seed_provider_type& val) {
     return json::json_return_type(val.class_name);
 }
 
-std::string_view format_type(std::string_view type) {
+std::string format_type(const std::string& type) {
     if (type == "int") {
         return "integer";
     }
     return type;
 }
 
-future<> get_config_swagger_entry(std::string_view name, const std::string& description, std::string_view type, bool& first, output_stream<char>& os) {
+future<> get_config_swagger_entry(const std::string& name, const std::string& description, const std::string& type, bool& first, output_stream<char>& os) {
     std::stringstream ss;
     if (first) {
         first=false;
@@ -88,29 +87,23 @@ future<> get_config_swagger_entry(std::string_view name, const std::string& desc
 }
 
 namespace cs = httpd::config_json;
+#define _get_config_value(name, type, deflt, status, desc, ...) if (id == #name) {return get_json_return_type(ctx.db.local().get_config().name());}
+
+
+#define _get_config_description(name, type, deflt, status, desc, ...) f = f.then([&os, &first] {return get_config_swagger_entry(#name, desc, #type, first, os);});
 
 void set_config(std::shared_ptr < api_registry_builder20 > rb, http_context& ctx, routes& r) {
-    rb->register_function(r, [&ctx] (output_stream<char>& os) {
-        return do_with(true, [&os, &ctx] (bool& first) {
+    rb->register_function(r, [] (output_stream<char>& os) {
+        return do_with(true, [&os] (bool& first) {
             auto f = make_ready_future();
-            for (auto&& cfg_ref : ctx.db.local().get_config().values()) {
-                auto&& cfg = cfg_ref.get();
-                f = f.then([&os, &first, &cfg] {
-                    return get_config_swagger_entry(cfg.name(), std::string(cfg.desc()), cfg.type_name(), first, os);
-                });
-            }
+            _make_config_values(_get_config_description)
             return f;
         });
     });
 
     cs::find_config_id.set(r, [&ctx] (const_req r) {
         auto id = r.param["id"];
-        for (auto&& cfg_ref : ctx.db.local().get_config().values()) {
-            auto&& cfg = cfg_ref.get();
-            if (id == cfg.name()) {
-                return cfg.value_as_json();
-            }
-        }
+        _make_config_values(_get_config_value)
         throw bad_param_exception(sstring("No such config entry: ") + id);
     });
 }

api/error_injection.cc

@@ -1,66 +0,0 @@
-/*
- * Copyright (C) 2020 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "api/api-doc/error_injection.json.hh"
-#include "api/api.hh"
-
-#include <seastar/http/exception.hh>
-#include "log.hh"
-#include "utils/error_injection.hh"
-#include "seastar/core/future-util.hh"
-
-namespace api {
-
-namespace hf = httpd::error_injection_json;
-
-void set_error_injection(http_context& ctx, routes& r) {
-
-    hf::enable_injection.set(r, [](std::unique_ptr<request> req) {
-        sstring injection = req->param["injection"];
-        bool one_shot = req->get_query_param("one_shot") == "True";
-        auto& errinj = utils::get_local_injector();
-        errinj.enable_on_all(injection, one_shot);
-        return make_ready_future<json::json_return_type>(json::json_void());
-    });
-
-    hf::get_enabled_injections_on_all.set(r, [](std::unique_ptr<request> req) {
-        auto& errinj = utils::get_local_injector();
-        auto ret = errinj.enabled_injections_on_all();
-        return make_ready_future<json::json_return_type>(ret);
-    });
-
-    hf::disable_injection.set(r, [](std::unique_ptr<request> req) {
-        sstring injection = req->param["injection"];
-
-        auto& errinj = utils::get_local_injector();
-        errinj.disable_on_all(injection);
-        return make_ready_future<json::json_return_type>(json::json_void());
-    });
-
-    hf::disable_on_all.set(r, [](std::unique_ptr<request> req) {
-        auto& errinj = utils::get_local_injector();
-        errinj.disable_on_all();
-        return make_ready_future<json::json_return_type>(json::json_void());
-    });
-
-}
-
-} // namespace api

api/lsa.cc

@@ -23,7 +23,7 @@
 #include "api/lsa.hh"
 #include "api/api.hh"
 
-#include <seastar/http/exception.hh>
+#include "http/exception.hh"
 #include "utils/logalloc.hh"
 #include "log.hh"
 

api/messaging_service.cc

@@ -21,7 +21,7 @@
 
 #include "messaging_service.hh"
 #include "message/messaging_service.hh"
-#include <seastar/rpc/rpc_types.hh>
+#include "rpc/rpc_types.hh"
 #include "api/api-doc/messaging_service.json.hh"
 #include <iostream>
 #include <sstream>
@@ -76,7 +76,7 @@ future_json_function get_server_getter(std::function<uint64_t(const rpc::stats&)
         auto get_shard_map = [f](messaging_service& ms) {
             std::unordered_map<gms::inet_address, unsigned long> map;
             ms.foreach_server_connection_stats([&map, f] (const rpc::client_info& info, const rpc::stats& stats) mutable {
-                map[gms::inet_address(info.addr.addr())] = f(stats);
+                map[gms::inet_address(net::ipv4_address(info.addr))] = f(stats);
             });
             return map;
         };
@@ -139,7 +139,7 @@ void set_messaging_service(http_context& ctx, routes& r) {
                 messaging_verb v = i; // for type safety we use messaging_verb values
                 auto idx = static_cast<uint32_t>(v);
                 if (idx >= map->size()) {
-                    throw std::runtime_error(format("verb index out of bounds: {:d}, map size: {:d}", idx, map->size()));
+                    throw std::runtime_error(sprint("verb index out of bounds: %lu, map size: %lu", idx, map->size()));
                 }
                 if ((*map)[idx] > 0) {
                     c.count = (*map)[idx];

api/storage_proxy.cc

@@ -26,8 +26,6 @@
 #include "service/storage_service.hh"
 #include "db/config.hh"
 #include "utils/histogram.hh"
-#include "database.hh"
-#include "seastar/core/scheduling_specific.hh"
 
 namespace api {
 
@@ -35,70 +33,12 @@ namespace sp = httpd::storage_proxy_json;
 using proxy = service::storage_proxy;
 using namespace json;
 
-
-/**
- * This function implement a two dimentional map reduce where
- * the first level is a distributed storage_proxy class and the
- * second level is the stats per scheduling group class.
- * @param d -  a reference to the storage_proxy distributed class.
- * @param mapper -  the internal mapper that is used to map the internal
- * stat class into a value of type `V`.
- * @param reducer - the reducer that is used in both outer and inner
- * aggregations.
- * @param initial_value - the initial value to use for both aggregations
- * @return A future that resolves to the result of the aggregation.
- */
-template<typename V, typename Reducer, typename InnerMapper>
-future<V> two_dimensional_map_reduce(distributed<service::storage_proxy>& d,
-        InnerMapper mapper, Reducer reducer, V initial_value) {
-    return d.map_reduce0( [mapper, reducer, initial_value] (const service::storage_proxy& sp) {
-        return map_reduce_scheduling_group_specific<service::storage_proxy_stats::stats>(
-                mapper, reducer, initial_value, sp.get_stats_key());
-    }, initial_value, reducer);
+static future<utils::rate_moving_average>  sum_timed_rate(distributed<proxy>& d, utils::timed_rate_moving_average proxy::stats::*f) {
+    return d.map_reduce0([f](const proxy& p) {return (p.get_stats().*f).rate();}, utils::rate_moving_average(),
+            std::plus<utils::rate_moving_average>());
 }
 
-/**
- * This function implement a two dimentional map reduce where
- * the first level is a distributed storage_proxy class and the
- * second level is the stats per scheduling group class.
- * @param d -  a reference to the storage_proxy distributed class.
- * @param f - a field pointer which is the implicit internal reducer.
- * @param reducer - the reducer that is used in both outer and inner
- * aggregations.
- * @param initial_value - the initial value to use for both aggregations* @return
- * @return A future that resolves to the result of the aggregation.
- */
-template<typename V, typename Reducer, typename F>
-future<V> two_dimensional_map_reduce(distributed<service::storage_proxy>& d,
-        V F::*f, Reducer reducer, V initial_value) {
-    return two_dimensional_map_reduce(d, [f] (F& stats) {
-        return stats.*f;
-    }, reducer, initial_value);
-}
-
-/**
- * A partial Specialization of sum_stats for the storage proxy
- * case where the get stats function doesn't return a
- * stats object with fields but a per scheduling group
- * stats object, the name was also changed since functions
- * partial specialization is not supported in C++.
- *
- */
-template<typename V, typename F>
-future<json::json_return_type>  sum_stats_storage_proxy(distributed<proxy>& d, V F::*f) {
-    return two_dimensional_map_reduce(d, [f] (F& stats) { return stats.*f; }, std::plus<V>(), V(0)).then([] (V val) {
-        return make_ready_future<json::json_return_type>(val);
-    });
-}
-
-
-static future<utils::rate_moving_average>  sum_timed_rate(distributed<proxy>& d, utils::timed_rate_moving_average service::storage_proxy_stats::stats::*f) {
-    return two_dimensional_map_reduce(d, [f] (service::storage_proxy_stats::stats& stats) {
-        return (stats.*f).rate();
-    }, std::plus<utils::rate_moving_average>(), utils::rate_moving_average());
-}
-
-static future<json::json_return_type>  sum_timed_rate_as_obj(distributed<proxy>& d, utils::timed_rate_moving_average service::storage_proxy_stats::stats::*f) {
+static future<json::json_return_type>  sum_timed_rate_as_obj(distributed<proxy>& d, utils::timed_rate_moving_average proxy::stats::*f) {
     return sum_timed_rate(d, f).then([](const utils::rate_moving_average& val) {
         httpd::utils_json::rate_moving_average m;
         m = val;
@@ -106,76 +46,29 @@ static future<json::json_return_type>  sum_timed_rate_as_obj(distributed<proxy>&
     });
 }
 
-httpd::utils_json::rate_moving_average_and_histogram get_empty_moving_average() {
-    return timer_to_json(utils::rate_moving_average_and_histogram());
-}
-
-static future<json::json_return_type>  sum_timed_rate_as_long(distributed<proxy>& d, utils::timed_rate_moving_average service::storage_proxy_stats::stats::*f) {
+static future<json::json_return_type>  sum_timed_rate_as_long(distributed<proxy>& d, utils::timed_rate_moving_average proxy::stats::*f) {
     return sum_timed_rate(d, f).then([](const utils::rate_moving_average& val) {
         return make_ready_future<json::json_return_type>(val.count);
     });
 }
 
-static future<json::json_return_type>  sum_estimated_histogram(http_context& ctx, utils::estimated_histogram service::storage_proxy_stats::stats::*f) {
-
-    return two_dimensional_map_reduce(ctx.sp, f, utils::estimated_histogram_merge,
-            utils::estimated_histogram()).then([](const utils::estimated_histogram& val) {
+static future<json::json_return_type>  sum_estimated_histogram(http_context& ctx, utils::estimated_histogram proxy::stats::*f) {
+    return ctx.sp.map_reduce0([f](const proxy& p) {return p.get_stats().*f;}, utils::estimated_histogram(),
+            utils::estimated_histogram_merge).then([](const utils::estimated_histogram& val) {
         utils_json::estimated_histogram res;
         res = val;
         return make_ready_future<json::json_return_type>(res);
     });
 }
 
-static future<json::json_return_type>  total_latency(http_context& ctx, utils::timed_rate_moving_average_and_histogram service::storage_proxy_stats::stats::*f) {
-    return two_dimensional_map_reduce(ctx.sp, [f] (service::storage_proxy_stats::stats& stats) {
-            return (stats.*f).hist.mean * (stats.*f).hist.count;
-        }, std::plus<double>(), 0.0).then([](double val) {
+static future<json::json_return_type>  total_latency(http_context& ctx, utils::timed_rate_moving_average_and_histogram proxy::stats::*f) {
+    return ctx.sp.map_reduce0([f](const proxy& p) {return (p.get_stats().*f).hist.mean * (p.get_stats().*f).hist.count;}, 0.0,
+            std::plus<double>()).then([](double val) {
         int64_t res = val;
         return make_ready_future<json::json_return_type>(res);
     });
 }
 
-/**
- * A partial Specialization of sum_histogram_stats
- * for the storage proxy case where the get stats
- * function doesn't return a stats object with
- * fields but a per scheduling group stats object,
- * the name was also changed since function partial
- * specialization is not supported in C++.
- */
-template<typename F>
-future<json::json_return_type>
-sum_histogram_stats_storage_proxy(distributed<proxy>& d,
-        utils::timed_rate_moving_average_and_histogram F::*f) {
-    return two_dimensional_map_reduce(d, [f] (service::storage_proxy_stats::stats& stats) {
-        return (stats.*f).hist;
-    }, std::plus<utils::ihistogram>(), utils::ihistogram()).
-            then([](const utils::ihistogram& val) {
-        return make_ready_future<json::json_return_type>(to_json(val));
-    });
-}
-
-/**
- * A partial Specialization of sum_timer_stats for the
- * storage proxy case where the get stats function
- * doesn't return a stats object with fields but a
- * per scheduling group stats object, the name
- * was also changed since partial function specialization
- * is not supported in C++.
- */
-template<typename F>
-future<json::json_return_type>
-sum_timer_stats_storage_proxy(distributed<proxy>& d,
-        utils::timed_rate_moving_average_and_histogram F::*f) {
-
-    return two_dimensional_map_reduce(d, [f] (service::storage_proxy_stats::stats& stats) {
-        return (stats.*f).rate();
-    }, std::plus<utils::rate_moving_average_and_histogram>(),
-            utils::rate_moving_average_and_histogram()).then([](const utils::rate_moving_average_and_histogram& val) {
-        return make_ready_future<json::json_return_type>(timer_to_json(val));
-    });
-}
-
 void set_storage_proxy(http_context& ctx, routes& r) {
     sp::get_total_hints.set(r, [](std::unique_ptr<request> req)  {
         //TBD
@@ -183,9 +76,12 @@ void set_storage_proxy(http_context& ctx, routes& r) {
         return make_ready_future<json::json_return_type>(0);
     });
 
-    sp::get_hinted_handoff_enabled.set(r, [&ctx](std::unique_ptr<request> req)  {
-        auto enabled = ctx.db.local().get_config().hinted_handoff_enabled();
-        return make_ready_future<json::json_return_type>(enabled);
+    sp::get_hinted_handoff_enabled.set(r, [](std::unique_ptr<request> req)  {
+        //TBD
+        // FIXME
+        // hinted handoff is not supported currently,
+        // so we should return false
+        return make_ready_future<json::json_return_type>(false);
     });
 
     sp::set_hinted_handoff_enabled.set(r, [](std::unique_ptr<request> req)  {
@@ -325,15 +221,15 @@ void set_storage_proxy(http_context& ctx, routes& r) {
     });
 
     sp::get_read_repair_attempted.set(r, [&ctx](std::unique_ptr<request> req)  {
-        return sum_stats_storage_proxy(ctx.sp, &service::storage_proxy_stats::stats::read_repair_attempts);
+        return sum_stats(ctx.sp, &proxy::stats::read_repair_attempts);
     });
 
     sp::get_read_repair_repaired_blocking.set(r, [&ctx](std::unique_ptr<request> req)  {
-        return sum_stats_storage_proxy(ctx.sp, &service::storage_proxy_stats::stats::read_repair_repaired_blocking);
+        return sum_stats(ctx.sp, &proxy::stats::read_repair_repaired_blocking);
     });
 
     sp::get_read_repair_repaired_background.set(r, [&ctx](std::unique_ptr<request> req)  {
-        return sum_stats_storage_proxy(ctx.sp, &service::storage_proxy_stats::stats::read_repair_repaired_background);
+        return sum_stats(ctx.sp, &proxy::stats::read_repair_repaired_background);
     });
 
     sp::get_schema_versions.set(r, [](std::unique_ptr<request> req)  {
@@ -349,154 +245,163 @@ void set_storage_proxy(http_context& ctx, routes& r) {
         });
     });
 
-    sp::get_cas_read_timeouts.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timed_rate_as_long(ctx.sp, &proxy::stats::cas_read_timeouts);
+    sp::get_cas_read_timeouts.set(r, [](std::unique_ptr<request> req) {
+        //TBD
+        // FIXME
+        // cas is not supported yet, so just return 0
+        return make_ready_future<json::json_return_type>(0);
     });
 
-    sp::get_cas_read_unavailables.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timed_rate_as_long(ctx.sp, &proxy::stats::cas_read_unavailables);
+    sp::get_cas_read_unavailables.set(r, [](std::unique_ptr<request> req) {
+        //TBD
+        // FIXME
+        // cas is not supported yet, so just return 0
+        return make_ready_future<json::json_return_type>(0);
     });
 
-    sp::get_cas_write_timeouts.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timed_rate_as_long(ctx.sp, &proxy::stats::cas_write_timeouts);
+    sp::get_cas_write_timeouts.set(r, [](std::unique_ptr<request> req) {
+        //TBD
+        // FIXME
+        // cas is not supported yet, so just return 0
+        return make_ready_future<json::json_return_type>(0);
     });
 
-    sp::get_cas_write_unavailables.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timed_rate_as_long(ctx.sp, &proxy::stats::cas_write_unavailables);
+    sp::get_cas_write_unavailables.set(r, [](std::unique_ptr<request> req) {
+        //TBD
+        // FIXME
+        // cas is not supported yet, so just return 0
+        return make_ready_future<json::json_return_type>(0);
     });
 
-    sp::get_cas_write_metrics_unfinished_commit.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_stats(ctx.sp, &proxy::stats::cas_write_unfinished_commit);
+    sp::get_cas_write_metrics_unfinished_commit.set(r, [](std::unique_ptr<request> req) {
+        //TBD
+        unimplemented();
+        return make_ready_future<json::json_return_type>(0);
     });
 
-    sp::get_cas_write_metrics_contention.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_estimated_histogram(ctx, &proxy::stats::cas_write_contention);
+    sp::get_cas_write_metrics_contention.set(r, [](std::unique_ptr<request> req) {
+        //TBD
+        unimplemented();
+        return make_ready_future<json::json_return_type>(0);
     });
 
-    sp::get_cas_write_metrics_condition_not_met.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_stats(ctx.sp, &proxy::stats::cas_write_condition_not_met);
+    sp::get_cas_write_metrics_condition_not_met.set(r, [](std::unique_ptr<request> req) {
+        //TBD
+        unimplemented();
+        return make_ready_future<json::json_return_type>(0);
     });
 
-    sp::get_cas_write_metrics_failed_read_round_optimization.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_stats(ctx.sp, &proxy::stats::cas_failed_read_round_optimization);
+    sp::get_cas_read_metrics_unfinished_commit.set(r, [](std::unique_ptr<request> req) {
+        //TBD
+        unimplemented();
+        return make_ready_future<json::json_return_type>(0);
     });
 
-    sp::get_cas_read_metrics_unfinished_commit.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_stats(ctx.sp, &proxy::stats::cas_read_unfinished_commit);
+    sp::get_cas_read_metrics_contention.set(r, [](std::unique_ptr<request> req) {
+        //TBD
+        unimplemented();
+        return make_ready_future<json::json_return_type>(0);
     });
 
-    sp::get_cas_read_metrics_contention.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_estimated_histogram(ctx, &proxy::stats::cas_read_contention);
+    sp::get_cas_read_metrics_condition_not_met.set(r, [](std::unique_ptr<request> req) {
+        //TBD
+        unimplemented();
+        return make_ready_future<json::json_return_type>(0);
     });
 
     sp::get_read_metrics_timeouts.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timed_rate_as_long(ctx.sp, &service::storage_proxy_stats::stats::read_timeouts);
+        return sum_timed_rate_as_long(ctx.sp, &proxy::stats::read_timeouts);
     });
 
     sp::get_read_metrics_unavailables.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timed_rate_as_long(ctx.sp, &service::storage_proxy_stats::stats::read_unavailables);
+        return sum_timed_rate_as_long(ctx.sp, &proxy::stats::read_unavailables);
     });
 
     sp::get_range_metrics_timeouts.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timed_rate_as_long(ctx.sp, &service::storage_proxy_stats::stats::range_slice_timeouts);
+        return sum_timed_rate_as_long(ctx.sp, &proxy::stats::range_slice_timeouts);
     });
 
     sp::get_range_metrics_unavailables.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timed_rate_as_long(ctx.sp, &service::storage_proxy_stats::stats::range_slice_unavailables);
+        return sum_timed_rate_as_long(ctx.sp, &proxy::stats::range_slice_unavailables);
     });
 
     sp::get_write_metrics_timeouts.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timed_rate_as_long(ctx.sp, &service::storage_proxy_stats::stats::write_timeouts);
+        return sum_timed_rate_as_long(ctx.sp, &proxy::stats::write_timeouts);
     });
 
     sp::get_write_metrics_unavailables.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timed_rate_as_long(ctx.sp, &service::storage_proxy_stats::stats::write_unavailables);
+        return sum_timed_rate_as_long(ctx.sp, &proxy::stats::write_unavailables);
     });
 
     sp::get_read_metrics_timeouts_rates.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timed_rate_as_obj(ctx.sp, &service::storage_proxy_stats::stats::read_timeouts);
+        return sum_timed_rate_as_obj(ctx.sp, &proxy::stats::read_timeouts);
     });
 
     sp::get_read_metrics_unavailables_rates.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timed_rate_as_obj(ctx.sp, &service::storage_proxy_stats::stats::read_unavailables);
+        return sum_timed_rate_as_obj(ctx.sp, &proxy::stats::read_unavailables);
     });
 
     sp::get_range_metrics_timeouts_rates.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timed_rate_as_obj(ctx.sp, &service::storage_proxy_stats::stats::range_slice_timeouts);
+        return sum_timed_rate_as_obj(ctx.sp, &proxy::stats::range_slice_timeouts);
     });
 
     sp::get_range_metrics_unavailables_rates.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timed_rate_as_obj(ctx.sp, &service::storage_proxy_stats::stats::range_slice_unavailables);
+        return sum_timed_rate_as_obj(ctx.sp, &proxy::stats::range_slice_unavailables);
     });
 
     sp::get_write_metrics_timeouts_rates.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timed_rate_as_obj(ctx.sp, &service::storage_proxy_stats::stats::write_timeouts);
+        return sum_timed_rate_as_obj(ctx.sp, &proxy::stats::write_timeouts);
     });
 
     sp::get_write_metrics_unavailables_rates.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timed_rate_as_obj(ctx.sp, &service::storage_proxy_stats::stats::write_unavailables);
+        return sum_timed_rate_as_obj(ctx.sp, &proxy::stats::write_unavailables);
     });
 
     sp::get_range_metrics_latency_histogram_depricated.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_histogram_stats_storage_proxy(ctx.sp, &service::storage_proxy_stats::stats::range);
+        return sum_histogram_stats(ctx.sp, &proxy::stats::range);
     });
 
     sp::get_write_metrics_latency_histogram_depricated.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_histogram_stats_storage_proxy(ctx.sp, &service::storage_proxy_stats::stats::write);
+        return sum_histogram_stats(ctx.sp, &proxy::stats::write);
     });
 
     sp::get_read_metrics_latency_histogram_depricated.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_histogram_stats_storage_proxy(ctx.sp, &service::storage_proxy_stats::stats::read);
+        return sum_histogram_stats(ctx.sp, &proxy::stats::read);
     });
 
     sp::get_range_metrics_latency_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timer_stats_storage_proxy(ctx.sp, &service::storage_proxy_stats::stats::range);
+        return sum_timer_stats(ctx.sp, &proxy::stats::range);
     });
 
     sp::get_write_metrics_latency_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timer_stats_storage_proxy(ctx.sp, &service::storage_proxy_stats::stats::write);
-    });
-    sp::get_cas_write_metrics_latency_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timer_stats(ctx.sp, &proxy::stats::cas_write);
-    });
-
-    sp::get_cas_read_metrics_latency_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timer_stats(ctx.sp, &proxy::stats::cas_read);
-    });
-
-    sp::get_view_write_metrics_latency_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
-        //TBD
-        // FIXME
-        // No View metrics are available, so just return empty moving average
-
-        return make_ready_future<json::json_return_type>(get_empty_moving_average());
+        return sum_timer_stats(ctx.sp, &proxy::stats::write);
     });
 
     sp::get_read_metrics_latency_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timer_stats_storage_proxy(ctx.sp, &service::storage_proxy_stats::stats::read);
+        return sum_timer_stats(ctx.sp, &proxy::stats::read);
     });
 
     sp::get_read_estimated_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_estimated_histogram(ctx, &service::storage_proxy_stats::stats::estimated_read);
+        return sum_estimated_histogram(ctx, &proxy::stats::estimated_read);
     });
 
     sp::get_read_latency.set(r, [&ctx](std::unique_ptr<request> req) {
-        return total_latency(ctx, &service::storage_proxy_stats::stats::read);
+        return total_latency(ctx, &proxy::stats::read);
     });
     sp::get_write_estimated_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_estimated_histogram(ctx, &service::storage_proxy_stats::stats::estimated_write);
+        return sum_estimated_histogram(ctx, &proxy::stats::estimated_write);
     });
 
     sp::get_write_latency.set(r, [&ctx](std::unique_ptr<request> req) {
-        return total_latency(ctx, &service::storage_proxy_stats::stats::write);
+        return total_latency(ctx, &proxy::stats::write);
     });
 
     sp::get_range_estimated_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
-        return sum_timer_stats_storage_proxy(ctx.sp, &service::storage_proxy_stats::stats::range);
+        return sum_timer_stats(ctx.sp, &proxy::stats::range);
     });
 
     sp::get_range_latency.set(r, [&ctx](std::unique_ptr<request> req) {
-        return total_latency(ctx, &service::storage_proxy_stats::stats::range);
+        return total_latency(ctx, &proxy::stats::range);
     });
 }
 

api/storage_service.cc

@@ -22,25 +22,19 @@
 #include "storage_service.hh"
 #include "api/api-doc/storage_service.json.hh"
 #include "db/config.hh"
-#include <optional>
-#include <time.h>
 #include <boost/range/adaptor/map.hpp>
 #include <boost/range/adaptor/filtered.hpp>
-#include "service/storage_service.hh"
-#include "service/load_meter.hh"
-#include "db/commitlog/commitlog.hh"
-#include "gms/gossiper.hh"
-#include "db/system_keyspace.hh"
-#include "seastar/http/exception.hh"
+#include <service/storage_service.hh>
+#include <db/commitlog/commitlog.hh>
+#include <gms/gossiper.hh>
+#include <db/system_keyspace.hh>
+#include "http/exception.hh"
 #include "repair/repair.hh"
 #include "locator/snitch_base.hh"
 #include "column_family.hh"
 #include "log.hh"
 #include "release.hh"
 #include "sstables/compaction_manager.hh"
-#include "sstables/sstables.hh"
-#include "database.hh"
-#include "db/extensions.hh"
 
 namespace api {
 
@@ -54,35 +48,27 @@ static sstring validate_keyspace(http_context& ctx, const parameters& param) {
     throw bad_param_exception("Keyspace " + param["keyspace"] + " Does not exist");
 }
 
-static ss::token_range token_range_endpoints_to_json(const dht::token_range_endpoints& d) {
-    ss::token_range r;
-    r.start_token = d._start_token;
-    r.end_token = d._end_token;
-    r.endpoints = d._endpoints;
-    r.rpc_endpoints = d._rpc_endpoints;
-    for (auto det : d._endpoint_details) {
-        ss::endpoint_detail ed;
-        ed.host = det._host;
-        ed.datacenter = det._datacenter;
-        if (det._rack != "") {
-            ed.rack = det._rack;
+
+static std::vector<ss::token_range> describe_ring(const sstring& keyspace) {
+    std::vector<ss::token_range> res;
+    for (auto d : service::get_local_storage_service().describe_ring(keyspace)) {
+        ss::token_range r;
+        r.start_token = d._start_token;
+        r.end_token = d._end_token;
+        r.endpoints = d._endpoints;
+        r.rpc_endpoints = d._rpc_endpoints;
+        for (auto det : d._endpoint_details) {
+            ss::endpoint_detail ed;
+            ed.host = det._host;
+            ed.datacenter = det._datacenter;
+            if (det._rack != "") {
+                ed.rack = det._rack;
+            }
+            r.endpoint_details.push(ed);
         }
-        r.endpoint_details.push(ed);
+        res.push_back(r);
     }
-    return r;
-}
-
-using ks_cf_func = std::function<future<json::json_return_type>(http_context&, std::unique_ptr<request>, sstring, std::vector<sstring>)>;
-
-static auto wrap_ks_cf(http_context &ctx, ks_cf_func f) {
-    return [&ctx, f = std::move(f)](std::unique_ptr<request> req) {
-        auto keyspace = validate_keyspace(ctx, req->param);
-        auto column_families = split_cf(req->get_query_param("cf"));
-        if (column_families.empty()) {
-            column_families = map_keys(ctx.db.local().find_keyspace(keyspace).metadata().get()->cf_meta_data());
-        }
-        return f(ctx, std::move(req), std::move(keyspace), std::move(column_families));
-    };
+    return res;
 }
 
 void set_storage_service(http_context& ctx, routes& r) {
@@ -92,17 +78,15 @@ void set_storage_service(http_context& ctx, routes& r) {
         });
     });
 
-    ss::get_tokens.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return make_ready_future<json::json_return_type>(stream_range_as_array(ctx.token_metadata.local().sorted_tokens(), [](const dht::token& i) {
-           return boost::lexical_cast<std::string>(i);
-        }));
+    ss::get_tokens.set(r, [] (const_req req) {
+        auto tokens = service::get_local_storage_service().get_token_metadata().sorted_tokens();
+        return container_to_vec(tokens);
     });
 
-    ss::get_node_tokens.set(r, [&ctx] (std::unique_ptr<request> req) {
-        gms::inet_address addr(req->param["endpoint"]);
-        return make_ready_future<json::json_return_type>(stream_range_as_array(ctx.token_metadata.local().get_tokens(addr), [](const dht::token& i) {
-           return boost::lexical_cast<std::string>(i);
-       }));
+    ss::get_node_tokens.set(r, [] (const_req req) {
+        gms::inet_address addr(req.param["endpoint"]);
+        auto tokens = service::get_local_storage_service().get_token_metadata().get_tokens(addr);
+        return container_to_vec(tokens);
     });
 
     ss::get_commitlog.set(r, [&ctx](const_req req) {
@@ -118,17 +102,21 @@ void set_storage_service(http_context& ctx, routes& r) {
         }));
     });
 
-    ss::get_leaving_nodes.set(r, [&ctx](const_req req) {
-        return container_to_vec(ctx.token_metadata.local().get_leaving_endpoints());
+    ss::get_leaving_nodes.set(r, [](const_req req) {
+        return container_to_vec(service::get_local_storage_service().get_token_metadata().get_leaving_endpoints());
     });
 
     ss::get_moving_nodes.set(r, [](const_req req) {
+        auto points = service::get_local_storage_service().get_token_metadata().get_moving_endpoints();
         std::unordered_set<sstring> addr;
+        for (auto i: points) {
+            addr.insert(boost::lexical_cast<std::string>(i.second));
+        }
         return container_to_vec(addr);
     });
 
-    ss::get_joining_nodes.set(r, [&ctx](const_req req) {
-        auto points = ctx.token_metadata.local().get_bootstrap_tokens();
+    ss::get_joining_nodes.set(r, [](const_req req) {
+        auto points = service::get_local_storage_service().get_token_metadata().get_bootstrap_tokens();
         std::unordered_set<sstring> addr;
         for (auto i: points) {
             addr.insert(boost::lexical_cast<std::string>(i.second));
@@ -171,26 +159,27 @@ void set_storage_service(http_context& ctx, routes& r) {
         return make_ready_future<json::json_return_type>(res);
     });
 
-    ss::describe_any_ring.set(r, [&ctx](std::unique_ptr<request> req) {
-        return make_ready_future<json::json_return_type>(stream_range_as_array(service::get_local_storage_service().describe_ring(""), token_range_endpoints_to_json));
+    ss::describe_any_ring.set(r, [&ctx](const_req req) {
+        return describe_ring("");
     });
 
-    ss::describe_ring.set(r, [&ctx](std::unique_ptr<request> req) {
-        auto keyspace = validate_keyspace(ctx, req->param);
-        return make_ready_future<json::json_return_type>(stream_range_as_array(service::get_local_storage_service().describe_ring(keyspace), token_range_endpoints_to_json));
+    ss::describe_ring.set(r, [&ctx](const_req req) {
+        auto keyspace = validate_keyspace(ctx, req.param);
+        return describe_ring(keyspace);
     });
 
-    ss::get_host_id_map.set(r, [&ctx](const_req req) {
+    ss::get_host_id_map.set(r, [](const_req req) {
         std::vector<ss::mapper> res;
-        return map_to_key_value(ctx.token_metadata.local().get_endpoint_to_host_id_map_for_reading(), res);
+        return map_to_key_value(service::get_local_storage_service().
+                get_token_metadata().get_endpoint_to_host_id_map_for_reading(), res);
     });
 
     ss::get_load.set(r, [&ctx](std::unique_ptr<request> req) {
-        return get_cf_stats(ctx, &column_family_stats::live_disk_space_used);
+        return get_cf_stats(ctx, &column_family::stats::live_disk_space_used);
     });
 
-    ss::get_load_map.set(r, [&ctx] (std::unique_ptr<request> req) {
-        return ctx.lmeter.get_load_map().then([] (auto&& load_map) {
+    ss::get_load_map.set(r, [] (std::unique_ptr<request> req) {
+        return service::get_local_storage_service().get_load_map().then([] (auto&& load_map) {
             std::vector<ss::map_string_double> res;
             for (auto i : load_map) {
                 ss::map_string_double val;
@@ -215,6 +204,64 @@ void set_storage_service(http_context& ctx, routes& r) {
                 req.get_query_param("key")));
     });
 
+    ss::get_snapshot_details.set(r, [](std::unique_ptr<request> req) {
+        return service::get_local_storage_service().get_snapshot_details().then([] (auto result) {
+            std::vector<ss::snapshots> res;
+            for (auto& map: result) {
+                ss::snapshots all_snapshots;
+                all_snapshots.key = map.first;
+
+                std::vector<ss::snapshot> snapshot;
+                for (auto& cf: map.second) {
+                    ss::snapshot s;
+                    s.ks = cf.ks;
+                    s.cf = cf.cf;
+                    s.live = cf.live;
+                    s.total = cf.total;
+                    snapshot.push_back(std::move(s));
+                }
+                all_snapshots.value = std::move(snapshot);
+                res.push_back(std::move(all_snapshots));
+            }
+            return make_ready_future<json::json_return_type>(std::move(res));
+        });
+    });
+
+    ss::take_snapshot.set(r, [](std::unique_ptr<request> req) {
+        auto tag = req->get_query_param("tag");
+        auto column_family = req->get_query_param("cf");
+
+        std::vector<sstring> keynames = split(req->get_query_param("kn"), ",");
+
+        auto resp = make_ready_future<>();
+        if (column_family.empty()) {
+            resp = service::get_local_storage_service().take_snapshot(tag, keynames);
+        } else {
+            if (keynames.size() > 1) {
+                throw httpd::bad_param_exception("Only one keyspace allowed when specifying a column family");
+            }
+            resp = service::get_local_storage_service().take_column_family_snapshot(keynames[0], column_family, tag);
+        }
+        return resp.then([] {
+            return make_ready_future<json::json_return_type>(json_void());
+        });
+    });
+
+    ss::del_snapshot.set(r, [](std::unique_ptr<request> req) {
+        auto tag = req->get_query_param("tag");
+
+        std::vector<sstring> keynames = split(req->get_query_param("kn"), ",");
+        return service::get_local_storage_service().clear_snapshot(tag, keynames).then([] {
+            return make_ready_future<json::json_return_type>(json_void());
+        });
+    });
+
+    ss::true_snapshots_size.set(r, [](std::unique_ptr<request> req) {
+        return service::get_local_storage_service().true_snapshots_size().then([] (int64_t size) {
+            return make_ready_future<json::json_return_type>(size);
+        });
+    });
+
     ss::force_keyspace_compaction.set(r, [&ctx](std::unique_ptr<request> req) {
         auto keyspace = validate_keyspace(ctx, req->param);
         auto column_families = split_cf(req->get_query_param("cf"));
@@ -240,40 +287,38 @@ void set_storage_service(http_context& ctx, routes& r) {
         if (column_families.empty()) {
             column_families = map_keys(ctx.db.local().find_keyspace(keyspace).metadata().get()->cf_meta_data());
         }
-        return service::get_local_storage_service().is_cleanup_allowed(keyspace).then([&ctx, keyspace,
-                column_families = std::move(column_families)] (bool is_cleanup_allowed) mutable {
-            if (!is_cleanup_allowed) {
-                return make_exception_future<json::json_return_type>(
-                        std::runtime_error("Can not perform cleanup operation when topology changes"));
+        return ctx.db.invoke_on_all([keyspace, column_families] (database& db) {
+            std::vector<column_family*> column_families_vec;
+            auto& cm = db.get_compaction_manager();
+            for (auto cf : column_families) {
+                column_families_vec.push_back(&db.find_column_family(keyspace, cf));
             }
-            return ctx.db.invoke_on_all([keyspace, column_families] (database& db) {
-                std::vector<column_family*> column_families_vec;
-                auto& cm = db.get_compaction_manager();
-                for (auto cf : column_families) {
-                    column_families_vec.push_back(&db.find_column_family(keyspace, cf));
-                }
-                return parallel_for_each(column_families_vec, [&cm, &db] (column_family* cf) {
-                    return cm.perform_cleanup(db, cf);
-                });
-            }).then([]{
-                return make_ready_future<json::json_return_type>(0);
-            });
-        });
-    });
-
-    ss::upgrade_sstables.set(r, wrap_ks_cf(ctx, [] (http_context& ctx, std::unique_ptr<request> req, sstring keyspace, std::vector<sstring> column_families) {
-        bool exclude_current_version = req_param<bool>(*req, "exclude_current_version", false);
-
-        return ctx.db.invoke_on_all([=] (database& db) {
-            return do_for_each(column_families, [=, &db](sstring cfname) {
-                auto& cm = db.get_compaction_manager();
-                auto& cf = db.find_column_family(keyspace, cfname);
-                return cm.perform_sstable_upgrade(&cf, exclude_current_version);
+            return parallel_for_each(column_families_vec, [&cm] (column_family* cf) {
+                return cm.perform_cleanup(cf);
             });
         }).then([]{
             return make_ready_future<json::json_return_type>(0);
         });
-    }));
+    });
+
+    ss::scrub.set(r, [&ctx](std::unique_ptr<request> req) {
+        //TBD
+        unimplemented();
+        auto keyspace = validate_keyspace(ctx, req->param);
+        auto column_family = req->get_query_param("cf");
+        auto disable_snapshot = req->get_query_param("disable_snapshot");
+        auto skip_corrupted = req->get_query_param("skip_corrupted");
+        return make_ready_future<json::json_return_type>(json_void());
+    });
+
+    ss::upgrade_sstables.set(r, [&ctx](std::unique_ptr<request> req) {
+        //TBD
+        unimplemented();
+        auto keyspace = validate_keyspace(ctx, req->param);
+        auto column_family = req->get_query_param("cf");
+        auto exclude_current_version = req->get_query_param("exclude_current_version");
+        return make_ready_future<json::json_return_type>(json_void());
+    });
 
     ss::force_keyspace_flush.set(r, [&ctx](std::unique_ptr<request> req) {
         auto keyspace = validate_keyspace(ctx, req->param);
@@ -411,7 +456,7 @@ void set_storage_service(http_context& ctx, routes& r) {
         return service::get_storage_service().map_reduce(adder<service::storage_service::drain_progress>(), [] (auto& ss) {
             return ss.get_drain_progress();
         }).then([] (auto&& progress) {
-            auto progress_str = format("Drained {}/{} ColumnFamilies", progress.remaining_cfs, progress.total_cfs);
+            auto progress_str = sprint("Drained %s/%s ColumnFamilies", progress.remaining_cfs, progress.total_cfs);
             return make_ready_future<json::json_return_type>(std::move(progress_str));
         });
     });
@@ -516,7 +561,9 @@ void set_storage_service(http_context& ctx, routes& r) {
     });
 
     ss::join_ring.set(r, [](std::unique_ptr<request> req) {
-        return make_ready_future<json::json_return_type>(json_void());
+        return service::get_local_storage_service().join_ring().then([] {
+            return make_ready_future<json::json_return_type>(json_void());
+        });
     });
 
     ss::is_joined.set(r, [] (std::unique_ptr<request> req) {
@@ -620,11 +667,7 @@ void set_storage_service(http_context& ctx, routes& r) {
         auto coordinator = std::hash<sstring>()(cf) % smp::count;
         return service::get_storage_service().invoke_on(coordinator, [ks = std::move(ks), cf = std::move(cf)] (service::storage_service& s) {
             return s.load_new_sstables(ks, cf);
-        }).then_wrapped([] (auto&& f) {
-            if (f.failed()) {
-                auto msg = fmt::format("Failed to load new sstables: {}", f.get_exception());
-                return make_exception_future<json::json_return_type>(httpd::server_error_exception(msg));
-            }
+        }).then([] {
             return make_ready_future<json::json_return_type>(json_void());
         });
     });
@@ -658,7 +701,7 @@ void set_storage_service(http_context& ctx, routes& r) {
             } catch (std::out_of_range& e) {
                 throw httpd::bad_param_exception(e.what());
             } catch (std::invalid_argument&){
-                throw httpd::bad_param_exception(format("Bad format in a probability value: \"{}\"", probability.c_str()));
+                throw httpd::bad_param_exception(sprint("Bad format in a probability value: \"%s\"", probability.c_str()));
             }
         });
     });
@@ -694,7 +737,7 @@ void set_storage_service(http_context& ctx, routes& r) {
                 return make_ready_future<json::json_return_type>(json_void());
             });
         } catch (...) {
-            throw httpd::bad_param_exception(format("Bad format value: "));
+            throw httpd::bad_param_exception(sprint("Bad format value: "));
         }
     });
 
@@ -776,7 +819,7 @@ void set_storage_service(http_context& ctx, routes& r) {
     });
 
     ss::get_metrics_load.set(r, [&ctx](std::unique_ptr<request> req) {
-        return get_cf_stats(ctx, &column_family_stats::live_disk_space_used);
+        return get_cf_stats(ctx, &column_family::stats::live_disk_space_used);
     });
 
     ss::get_exceptions.set(r, [](const_req req) {
@@ -818,236 +861,6 @@ void set_storage_service(http_context& ctx, routes& r) {
             return make_ready_future<json::json_return_type>(map_to_key_value(std::move(status), res));
         });
     });
-
-    ss::sstable_info.set(r, [&ctx] (std::unique_ptr<request> req) {
-        auto ks = api::req_param<sstring>(*req, "keyspace", {}).value;
-        auto cf = api::req_param<sstring>(*req, "cf", {}).value;
-
-        // The size of this vector is bound by ks::cf. I.e. it is as most Nks + Ncf long
-        // which is not small, but not huge either. 
-        using table_sstables_list = std::vector<ss::table_sstables>;
-
-        return do_with(table_sstables_list{}, [ks, cf, &ctx](table_sstables_list& dst) {
-            return service::get_local_storage_service().db().map_reduce([&dst](table_sstables_list&& res) {
-                for (auto&& t : res) {
-                    auto i = std::find_if(dst.begin(), dst.end(), [&t](const ss::table_sstables& t2) {
-                        return t.keyspace() == t2.keyspace() && t.table() == t2.table();
-                    });
-                    if (i == dst.end()) {
-                        dst.emplace_back(std::move(t));
-                        continue;
-                    }
-                    auto& ssd = i->sstables; 
-                    for (auto&& sd : t.sstables._elements) {
-                        auto j = std::find_if(ssd._elements.begin(), ssd._elements.end(), [&sd](const ss::sstable& s) {
-                            return s.generation() == sd.generation();
-                        });
-                        if (j == ssd._elements.end()) {
-                            i->sstables.push(std::move(sd));
-                        }
-                    }
-                }
-            }, [ks, cf](const database& db) {
-                // see above
-                table_sstables_list res;
-
-                auto& ext = db.get_config().extensions();
-
-                for (auto& t : db.get_column_families() | boost::adaptors::map_values) {
-                    auto& schema = t->schema();
-                    if ((ks.empty() || ks == schema->ks_name()) && (cf.empty() || cf == schema->cf_name())) {
-                        // at most Nsstables long
-                        ss::table_sstables tst;
-                        tst.keyspace = schema->ks_name();
-                        tst.table = schema->cf_name();
-
-                        for (auto sstable : *t->get_sstables_including_compacted_undeleted()) {
-                            auto ts = db_clock::to_time_t(sstable->data_file_write_time());
-                            ::tm t;
-                            ::gmtime_r(&ts, &t);
-
-                            ss::sstable info;
-
-                            info.timestamp = t;
-                            info.generation = sstable->generation();
-                            info.level = sstable->get_sstable_level();
-                            info.size = sstable->bytes_on_disk();
-                            info.data_size = sstable->ondisk_data_size();
-                            info.index_size = sstable->index_size();
-                            info.filter_size = sstable->filter_size();
-                            info.version = sstable->get_version();
-
-                            if (sstable->has_component(sstables::component_type::CompressionInfo)) {
-                                auto& c = sstable->get_compression();
-                                auto cp = sstables::get_sstable_compressor(c);
-
-                                ss::named_maps nm;
-                                nm.group = "compression_parameters";
-                                for (auto& p : cp->options()) {
-                                    ss::mapper e;
-                                    e.key = p.first;
-                                    e.value = p.second;
-                                    nm.attributes.push(std::move(e));
-                                }
-                                if (!cp->options().count(compression_parameters::SSTABLE_COMPRESSION)) {
-                                    ss::mapper e;
-                                    e.key = compression_parameters::SSTABLE_COMPRESSION;
-                                    e.value = cp->name();
-                                    nm.attributes.push(std::move(e));
-                                }
-                                info.extended_properties.push(std::move(nm));
-                            }
-
-                            sstables::file_io_extension::attr_value_map map;
-
-                            for (auto* ep : ext.sstable_file_io_extensions()) {
-                                map.merge(ep->get_attributes(*sstable));
-                            }
-
-                            for (auto& p : map) {
-                                struct {
-                                    const sstring& key; 
-                                    ss::sstable& info;
-                                    void operator()(const std::map<sstring, sstring>& map) const {
-                                        ss::named_maps nm;
-                                        nm.group = key;
-                                        for (auto& p : map) {
-                                            ss::mapper e;
-                                            e.key = p.first;
-                                            e.value = p.second;
-                                            nm.attributes.push(std::move(e));
-                                        }
-                                        info.extended_properties.push(std::move(nm));
-                                    }
-                                    void operator()(const sstring& value) const {
-                                        ss::mapper e;
-                                        e.key = key;
-                                        e.value = value;
-                                        info.properties.push(std::move(e));                                        
-                                    }
-                                } v{p.first, info};
-
-                                std::visit(v, p.second);
-                            }
-
-                            tst.sstables.push(std::move(info));
-                        }
-                        res.emplace_back(std::move(tst));
-                    }
-                }
-                std::sort(res.begin(), res.end(), [](const ss::table_sstables& t1, const ss::table_sstables& t2) {
-                    return t1.keyspace() < t2.keyspace() || (t1.keyspace() == t2.keyspace() && t1.table() < t2.table());
-                });
-                return res;
-            }).then([&dst] {
-                return make_ready_future<json::json_return_type>(stream_object(dst));
-            });
-        });
-    });
-
-}
-
-void set_snapshot(http_context& ctx, routes& r) {
-    ss::get_snapshot_details.set(r, [](std::unique_ptr<request> req) {
-        std::function<future<>(output_stream<char>&&)> f = [](output_stream<char>&& s) {
-            return do_with(output_stream<char>(std::move(s)), true, [] (output_stream<char>& s, bool& first){
-                return s.write("[").then([&s, &first] {
-                    return service::get_local_storage_service().get_snapshot_details().then([&s, &first] (std::unordered_map<sstring, std::vector<service::storage_service::snapshot_details>>&& result) {
-                        return do_with(std::move(result), [&s, &first](const std::unordered_map<sstring, std::vector<service::storage_service::snapshot_details>>& result) {
-                            return do_for_each(result, [&s, &result,&first](std::tuple<sstring, std::vector<service::storage_service::snapshot_details>>&& map){
-                                return do_with(ss::snapshots(), [&s, &first, &result, &map](ss::snapshots& all_snapshots) {
-                                    all_snapshots.key = std::get<0>(map);
-                                    future<> f = first ? make_ready_future<>() : s.write(", ");
-                                    first = false;
-                                    std::vector<ss::snapshot> snapshot;
-                                    for (auto& cf: std::get<1>(map)) {
-                                        ss::snapshot snp;
-                                        snp.ks = cf.ks;
-                                        snp.cf = cf.cf;
-                                        snp.live = cf.live;
-                                        snp.total = cf.total;
-                                        snapshot.push_back(std::move(snp));
-                                    }
-                                    all_snapshots.value = std::move(snapshot);
-                                    return f.then([&s, &all_snapshots] {
-                                        return all_snapshots.write(s);
-                                    });
-                                });
-                            });
-                        });
-                    }).then([&s] {
-                        return s.write("]").then([&s] {
-                            return s.close();
-                        });
-                    });
-                });
-            });
-        };
-        return make_ready_future<json::json_return_type>(std::move(f));
-    });
-
-    ss::take_snapshot.set(r, [](std::unique_ptr<request> req) {
-        auto tag = req->get_query_param("tag");
-        auto column_family = req->get_query_param("cf");
-
-        std::vector<sstring> keynames = split(req->get_query_param("kn"), ",");
-
-        auto resp = make_ready_future<>();
-        if (column_family.empty()) {
-            resp = service::get_local_storage_service().take_snapshot(tag, keynames);
-        } else {
-            if (keynames.empty()) {
-                throw httpd::bad_param_exception("The keyspace of column families must be specified");
-            }
-            if (keynames.size() > 1) {
-                throw httpd::bad_param_exception("Only one keyspace allowed when specifying a column family");
-            }
-            resp = service::get_local_storage_service().take_column_family_snapshot(keynames[0], column_family, tag);
-        }
-        return resp.then([] {
-            return make_ready_future<json::json_return_type>(json_void());
-        });
-    });
-
-    ss::del_snapshot.set(r, [](std::unique_ptr<request> req) {
-        auto tag = req->get_query_param("tag");
-        auto column_family = req->get_query_param("cf");
-
-        std::vector<sstring> keynames = split(req->get_query_param("kn"), ",");
-        return service::get_local_storage_service().clear_snapshot(tag, keynames, column_family).then([] {
-            return make_ready_future<json::json_return_type>(json_void());
-        });
-    });
-
-    ss::true_snapshots_size.set(r, [](std::unique_ptr<request> req) {
-        return service::get_local_storage_service().true_snapshots_size().then([] (int64_t size) {
-            return make_ready_future<json::json_return_type>(size);
-        });
-    });
-
-    ss::scrub.set(r, wrap_ks_cf(ctx, [] (http_context& ctx, std::unique_ptr<request> req, sstring keyspace, std::vector<sstring> column_families) {
-        const auto skip_corrupted = req_param<bool>(*req, "skip_corrupted", false);
-
-        auto f = make_ready_future<>();
-        if (!req_param<bool>(*req, "disable_snapshot", false)) {
-            auto tag = format("pre-scrub-{:d}", db_clock::now().time_since_epoch().count());
-            f = parallel_for_each(column_families, [keyspace, tag](sstring cf) {
-                return service::get_local_storage_service().take_column_family_snapshot(keyspace, cf, tag);
-            });
-        }
-
-        return f.then([&ctx, keyspace, column_families, skip_corrupted] {
-            return ctx.db.invoke_on_all([=] (database& db) {
-                return do_for_each(column_families, [=, &db](sstring cfname) {
-                    auto& cm = db.get_compaction_manager();
-                    auto& cf = db.find_column_family(keyspace, cfname);
-                    return cm.perform_sstable_scrub(&cf, skip_corrupted);
-                });
-            });
-        }).then([]{
-            return make_ready_future<json::json_return_type>(0);
-        });
-    }));
 }
 
 }

api/storage_service.hh

@@ -26,6 +26,5 @@
 namespace api {
 
 void set_storage_service(http_context& ctx, routes& r);
-void set_snapshot(http_context& ctx, routes& r);
 
 }

api/system.cc

@@ -22,7 +22,7 @@
 #include "api/api-doc/system.json.hh"
 #include "api/api.hh"
 
-#include <seastar/http/exception.hh>
+#include "http/exception.hh"
 #include "log.hh"
 
 namespace api {
@@ -30,10 +30,6 @@ namespace api {
 namespace hs = httpd::system_json;
 
 void set_system(http_context& ctx, routes& r) {
-    hs::get_system_uptime.set(r, [](const_req req) {
-        return std::chrono::duration_cast<std::chrono::milliseconds>(engine().uptime()).count();
-    });
-
     hs::get_all_logger_names.set(r, [](const_req req) {
         return logging::logger_registry().get_all_logger_names();
     });

atomic_cell.cc

@@ -21,7 +21,6 @@
 
 #include "atomic_cell.hh"
 #include "atomic_cell_or_collection.hh"
-#include "counters.hh"
 #include "types.hh"
 
 /// LSA mirator for cells with irrelevant type
@@ -48,23 +47,6 @@ atomic_cell atomic_cell::make_live(const abstract_type& type, api::timestamp_typ
     );
 }
 
-atomic_cell atomic_cell::make_live(const abstract_type& type, api::timestamp_type timestamp, ser::buffer_view<bytes_ostream::fragment_iterator> value, atomic_cell::collection_member cm) {
-    auto& imr_data = type.imr_state();
-    return atomic_cell(
-        imr_data.type_info(),
-        imr_object_type::make(data::cell::make_live(imr_data.type_info(), timestamp, value, bool(cm)), &imr_data.lsa_migrator())
-    );
-}
-
-atomic_cell atomic_cell::make_live(const abstract_type& type, api::timestamp_type timestamp, const fragmented_temporary_buffer::view& value, collection_member cm)
-{
-    auto& imr_data = type.imr_state();
-    return atomic_cell(
-        imr_data.type_info(),
-        imr_object_type::make(data::cell::make_live(imr_data.type_info(), timestamp, value, bool(cm)), &imr_data.lsa_migrator())
-    );
-}
-
 atomic_cell atomic_cell::make_live(const abstract_type& type, api::timestamp_type timestamp, bytes_view value,
                              gc_clock::time_point expiry, gc_clock::duration ttl, atomic_cell::collection_member cm) {
     auto& imr_data = type.imr_state();
@@ -74,25 +56,6 @@ atomic_cell atomic_cell::make_live(const abstract_type& type, api::timestamp_typ
     );
 }
 
-atomic_cell atomic_cell::make_live(const abstract_type& type, api::timestamp_type timestamp, ser::buffer_view<bytes_ostream::fragment_iterator> value,
-                             gc_clock::time_point expiry, gc_clock::duration ttl, atomic_cell::collection_member cm) {
-    auto& imr_data = type.imr_state();
-    return atomic_cell(
-        imr_data.type_info(),
-        imr_object_type::make(data::cell::make_live(imr_data.type_info(), timestamp, value, expiry, ttl, bool(cm)), &imr_data.lsa_migrator())
-    );
-}
-
-atomic_cell atomic_cell::make_live(const abstract_type& type, api::timestamp_type timestamp, const fragmented_temporary_buffer::view& value,
-                                   gc_clock::time_point expiry, gc_clock::duration ttl, collection_member cm)
-{
-    auto& imr_data = type.imr_state();
-    return atomic_cell(
-        imr_data.type_info(),
-        imr_object_type::make(data::cell::make_live(imr_data.type_info(), timestamp, value, expiry, ttl, bool(cm)), &imr_data.lsa_migrator())
-    );
-}
-
 atomic_cell atomic_cell::make_live_counter_update(api::timestamp_type timestamp, int64_t value) {
     auto& imr_data = no_type_imr_descriptor();
     return atomic_cell(
@@ -148,6 +111,35 @@ atomic_cell_or_collection::atomic_cell_or_collection(const abstract_type& type,
 {
 }
 
+static collection_mutation_view get_collection_mutation_view(const uint8_t* ptr)
+{
+    auto f = data::cell::structure::get_member<data::cell::tags::flags>(ptr);
+    auto ti = data::type_info::make_collection();
+    data::cell::context ctx(f, ti);
+    auto view = data::cell::structure::get_member<data::cell::tags::cell>(ptr).as<data::cell::tags::collection>(ctx);
+    auto dv = data::cell::variable_value::make_view(view, f.get<data::cell::tags::external_data>());
+    return collection_mutation_view { dv };
+}
+
+collection_mutation_view atomic_cell_or_collection::as_collection_mutation() const {
+    return get_collection_mutation_view(_data.get());
+}
+
+collection_mutation::collection_mutation(const collection_type_impl& type, collection_mutation_view v)
+    : _data(imr_object_type::make(data::cell::make_collection(v.data), &type.imr_state().lsa_migrator()))
+{
+}
+
+collection_mutation::collection_mutation(const collection_type_impl& type, bytes_view v)
+    : _data(imr_object_type::make(data::cell::make_collection(v), &type.imr_state().lsa_migrator()))
+{
+}
+
+collection_mutation::operator collection_mutation_view() const
+{
+    return get_collection_mutation_view(_data.get());
+}
+
 bool atomic_cell_or_collection::equals(const abstract_type& type, const atomic_cell_or_collection& other) const
 {
     auto ptr_a = _data.get();
@@ -163,20 +155,20 @@ bool atomic_cell_or_collection::equals(const abstract_type& type, const atomic_c
         if (a.timestamp() != b.timestamp()) {
             return false;
         }
-        if (a.is_live() != b.is_live()) {
-            return false;
-        }
         if (a.is_live()) {
-            if (a.is_counter_update() != b.is_counter_update()) {
+            if (!b.is_live()) {
                 return false;
             }
             if (a.is_counter_update()) {
+                if (!b.is_counter_update()) {
+                    return false;
+                }
                 return a.counter_update_value() == b.counter_update_value();
             }
-            if (a.is_live_and_has_ttl() != b.is_live_and_has_ttl()) {
-                return false;
-            }
             if (a.is_live_and_has_ttl()) {
+                if (!b.is_live_and_has_ttl()) {
+                    return false;
+                }
                 if (a.ttl() != b.ttl() || a.expiry() != b.expiry()) {
                     return false;
                 }
@@ -202,7 +194,7 @@ size_t atomic_cell_or_collection::external_memory_usage(const abstract_type& t)
     size_t external_value_size = 0;
     if (flags.get<data::cell::tags::external_data>()) {
         if (flags.get<data::cell::tags::collection>()) {
-            external_value_size = as_collection_mutation().data.size_bytes();
+            external_value_size = get_collection_mutation_view(_data.get()).data.size_bytes();
         } else {
             auto cell_view = data::cell::atomic_cell_view(t.imr_state().type_info(), view);
             external_value_size = cell_view.value_size();
@@ -215,73 +207,16 @@ size_t atomic_cell_or_collection::external_memory_usage(const abstract_type& t)
         + imr_object_type::size_overhead + external_value_size;
 }
 
-std::ostream&
-operator<<(std::ostream& os, const atomic_cell_view& acv) {
-    if (acv.is_live()) {
-        return fmt_print(os, "atomic_cell{{{},ts={:d},expiry={:d},ttl={:d}}}",
-            acv.is_counter_update()
-                    ? "counter_update_value=" + to_sstring(acv.counter_update_value())
-                    : to_hex(acv.value().linearize()),
-            acv.timestamp(),
-            acv.is_live_and_has_ttl() ? acv.expiry().time_since_epoch().count() : -1,
-            acv.is_live_and_has_ttl() ? acv.ttl().count() : 0);
-    } else {
-        return fmt_print(os, "atomic_cell{{DEAD,ts={:d},deletion_time={:d}}}",
-            acv.timestamp(), acv.deletion_time().time_since_epoch().count());
-    }
-}
-
-std::ostream&
-operator<<(std::ostream& os, const atomic_cell& ac) {
-    return os << atomic_cell_view(ac);
-}
-
-std::ostream&
-operator<<(std::ostream& os, const atomic_cell_view::printer& acvp) {
-    auto& type = acvp._type;
-    auto& acv = acvp._cell;
-    if (acv.is_live()) {
-        std::ostringstream cell_value_string_builder;
-        if (type.is_counter()) {
-            if (acv.is_counter_update()) {
-                cell_value_string_builder << "counter_update_value=" << acv.counter_update_value();
-            } else {
-                cell_value_string_builder << "shards: ";
-                counter_cell_view::with_linearized(acv, [&cell_value_string_builder] (counter_cell_view& ccv) {
-                    cell_value_string_builder << ::join(", ", ccv.shards());
-                });
-            }
-        } else {
-            cell_value_string_builder << type.to_string(acv.value().linearize());
-        }
-        return fmt_print(os, "atomic_cell{{{},ts={:d},expiry={:d},ttl={:d}}}",
-            cell_value_string_builder.str(),
-            acv.timestamp(),
-            acv.is_live_and_has_ttl() ? acv.expiry().time_since_epoch().count() : -1,
-            acv.is_live_and_has_ttl() ? acv.ttl().count() : 0);
-    } else {
-        return fmt_print(os, "atomic_cell{{DEAD,ts={:d},deletion_time={:d}}}",
-            acv.timestamp(), acv.deletion_time().time_since_epoch().count());
-    }
-}
-
-std::ostream&
-operator<<(std::ostream& os, const atomic_cell::printer& acp) {
-    return operator<<(os, static_cast<const atomic_cell_view::printer&>(acp));
-}
-
-std::ostream& operator<<(std::ostream& os, const atomic_cell_or_collection::printer& p) {
-    if (!p._cell._data.get()) {
+std::ostream& operator<<(std::ostream& os, const atomic_cell_or_collection& c) {
+    if (!c._data.get()) {
         return os << "{ null atomic_cell_or_collection }";
     }
     using dc = data::cell;
     os << "{ ";
-    if (dc::structure::get_member<dc::tags::flags>(p._cell._data.get()).get<dc::tags::collection>()) {
-        os << "collection ";
-        auto cmv = p._cell.as_collection_mutation();
-        os << collection_mutation_view::printer(*p._cdef.type, cmv);
+    if (dc::structure::get_member<dc::tags::flags>(c._data.get()).get<dc::tags::collection>()) {
+        os << "collection";
     } else {
-        os << atomic_cell_view::printer(*p._cdef.type, p._cell.as_atomic_cell(p._cdef));
+        os << "atomic cell";
     }
-    return os << " }";
+    return os << " @" << static_cast<const void*>(c._data.get()) << " }";
 }

atomic_cell.hh

@@ -26,16 +26,13 @@
 #include "tombstone.hh"
 #include "gc_clock.hh"
 #include "utils/managed_bytes.hh"
-#include <seastar/net//byteorder.hh>
+#include "net/byteorder.hh"
 #include <cstdint>
 #include <iosfwd>
 #include <seastar/util/gcc6-concepts.hh>
 #include "data/cell.hh"
 #include "data/schema_info.hh"
 #include "imr/utils.hh"
-#include "utils/fragmented_temporary_buffer.hh"
-
-#include "serializer.hh"
 
 class abstract_type;
 class collection_type_impl;
@@ -153,14 +150,6 @@ public:
     }
 
     friend std::ostream& operator<<(std::ostream& os, const atomic_cell_view& acv);
-
-    class printer {
-        const abstract_type& _type;
-        const atomic_cell_view& _cell;
-    public:
-        printer(const abstract_type& type, const atomic_cell_view& cell) : _type(type), _cell(cell) {}
-        friend std::ostream& operator<<(std::ostream& os, const printer& acvp);
-    };
 };
 
 class atomic_cell_mutable_view final : public basic_atomic_cell_view<mutable_view::yes> {
@@ -197,10 +186,6 @@ public:
     static atomic_cell make_dead(api::timestamp_type timestamp, gc_clock::time_point deletion_time);
     static atomic_cell make_live(const abstract_type& type, api::timestamp_type timestamp, bytes_view value,
                                  collection_member = collection_member::no);
-    static atomic_cell make_live(const abstract_type& type, api::timestamp_type timestamp, ser::buffer_view<bytes_ostream::fragment_iterator> value,
-                                 collection_member = collection_member::no);
-    static atomic_cell make_live(const abstract_type& type, api::timestamp_type timestamp, const fragmented_temporary_buffer::view& value,
-                                 collection_member = collection_member::no);
     static atomic_cell make_live(const abstract_type& type, api::timestamp_type timestamp, const bytes& value,
                                  collection_member cm = collection_member::no) {
         return make_live(type, timestamp, bytes_view(value), cm);
@@ -208,10 +193,6 @@ public:
     static atomic_cell make_live_counter_update(api::timestamp_type timestamp, int64_t value);
     static atomic_cell make_live(const abstract_type&, api::timestamp_type timestamp, bytes_view value,
         gc_clock::time_point expiry, gc_clock::duration ttl, collection_member = collection_member::no);
-    static atomic_cell make_live(const abstract_type&, api::timestamp_type timestamp, ser::buffer_view<bytes_ostream::fragment_iterator> value,
-        gc_clock::time_point expiry, gc_clock::duration ttl, collection_member = collection_member::no);
-    static atomic_cell make_live(const abstract_type&, api::timestamp_type timestamp, const fragmented_temporary_buffer::view& value,
-        gc_clock::time_point expiry, gc_clock::duration ttl, collection_member = collection_member::no);
     static atomic_cell make_live(const abstract_type& type, api::timestamp_type timestamp, const bytes& value,
                                  gc_clock::time_point expiry, gc_clock::duration ttl, collection_member cm = collection_member::no)
     {
@@ -227,12 +208,30 @@ public:
     static atomic_cell make_live_uninitialized(const abstract_type& type, api::timestamp_type timestamp, size_t size);
     friend class atomic_cell_or_collection;
     friend std::ostream& operator<<(std::ostream& os, const atomic_cell& ac);
+};
 
-    class printer : atomic_cell_view::printer {
-    public:
-        printer(const abstract_type& type, const atomic_cell_view& cell) : atomic_cell_view::printer(type, cell) {}
-        friend std::ostream& operator<<(std::ostream& os, const printer& acvp);
-    };
+class collection_mutation_view;
+
+// Represents a mutation of a collection.  Actual format is determined by collection type,
+// and is:
+//   set:  list of atomic_cell
+//   map:  list of pair<atomic_cell, bytes> (for key/value)
+//   list: tbd, probably ugly
+class collection_mutation {
+public:
+    using imr_object_type =  imr::utils::object<data::cell::structure>;
+    imr_object_type _data;
+
+    collection_mutation() {}
+    collection_mutation(const collection_type_impl&, collection_mutation_view v);
+    collection_mutation(const collection_type_impl&, bytes_view bv);
+    operator collection_mutation_view() const;
+};
+
+
+class collection_mutation_view {
+public:
+    atomic_cell_value_view data;
 };
 
 class column_definition;

atomic_cell_hash.hh

@@ -24,7 +24,6 @@
 // Not part of atomic_cell.hh to avoid cyclic dependency between types.hh and atomic_cell.hh
 
 #include "types.hh"
-#include "types/collection.hh"
 #include "atomic_cell.hh"
 #include "atomic_cell_or_collection.hh"
 #include "hashing.hh"
@@ -34,12 +33,14 @@ template<>
 struct appending_hash<collection_mutation_view> {
     template<typename Hasher>
     void operator()(Hasher& h, collection_mutation_view cell, const column_definition& cdef) const {
-        cell.with_deserialized(*cdef.type, [&] (collection_mutation_view_description m_view) {
-            ::feed_hash(h, m_view.tomb);
-            for (auto&& key_and_value : m_view.cells) {
-                ::feed_hash(h, key_and_value.first);
-                ::feed_hash(h, key_and_value.second, cdef);
-            }
+      cell.data.with_linearized([&] (bytes_view cell_bv) {
+        auto ctype = static_pointer_cast<const collection_type_impl>(cdef.type);
+        auto m_view = ctype->deserialize_mutation_form(cell_bv);
+        ::feed_hash(h, m_view.tomb);
+        for (auto&& key_and_value : m_view.cells) {
+            ::feed_hash(h, key_and_value.first);
+            ::feed_hash(h, key_and_value.second, cdef);
+        }
       });
     }
 };

atomic_cell_or_collection.hh

@@ -22,7 +22,6 @@
 #pragma once
 
 #include "atomic_cell.hh"
-#include "collection_mutation.hh"
 #include "schema.hh"
 #include "hashing.hh"
 
@@ -68,19 +67,7 @@ public:
     bytes_view serialize() const;
     bool equals(const abstract_type& type, const atomic_cell_or_collection& other) const;
     size_t external_memory_usage(const abstract_type&) const;
-
-    class printer {
-        const column_definition& _cdef;
-        const atomic_cell_or_collection& _cell;
-    public:
-        printer(const column_definition& cdef, const atomic_cell_or_collection& cell)
-            : _cdef(cdef), _cell(cell) { }
-        printer(const printer&) = delete;
-        printer(printer&&) = delete;
-
-        friend std::ostream& operator<<(std::ostream&, const printer&);
-    };
-    friend std::ostream& operator<<(std::ostream&, const printer&);
+    friend std::ostream& operator<<(std::ostream&, const atomic_cell_or_collection&);
 };
 
 namespace std {

auth/allow_all_authenticator.hh

@@ -52,7 +52,7 @@ public:
         return make_ready_future<>();
     }
 
-    virtual std::string_view qualified_java_name() const override {
+    virtual const sstring& qualified_java_name() const override {
         return allow_all_authenticator_name();
     }
 
@@ -72,19 +72,19 @@ public:
         return make_ready_future<authenticated_user>(anonymous_user());
     }
 
-    virtual future<> create(std::string_view, const authentication_options& options) const override {
+    virtual future<> create(stdx::string_view, const authentication_options& options) const override {
         return make_ready_future();
     }
 
-    virtual future<> alter(std::string_view, const authentication_options& options) const override {
+    virtual future<> alter(stdx::string_view, const authentication_options& options) const override {
         return make_ready_future();
     }
 
-    virtual future<> drop(std::string_view) const override {
+    virtual future<> drop(stdx::string_view) const override {
         return make_ready_future();
     }
 
-    virtual future<custom_options> query_custom_options(std::string_view role_name) const override {
+    virtual future<custom_options> query_custom_options(stdx::string_view role_name) const override {
         return make_ready_future<custom_options>();
     }
 

auth/allow_all_authorizer.hh

@@ -23,6 +23,7 @@
 
 #include "auth/authorizer.hh"
 #include "exceptions/exceptions.hh"
+#include "stdx.hh"
 
 namespace cql3 {
 class query_processor;
@@ -49,7 +50,7 @@ public:
         return make_ready_future<>();
     }
 
-    virtual std::string_view qualified_java_name() const override {
+    virtual const sstring& qualified_java_name() const override {
         return allow_all_authorizer_name();
     }
 
@@ -57,12 +58,12 @@ public:
         return make_ready_future<permission_set>(permissions::ALL);
     }
 
-    virtual future<> grant(std::string_view, permission_set, const resource&) const override {
+    virtual future<> grant(stdx::string_view, permission_set, const resource&) const override {
         return make_exception_future<>(
                 unsupported_authorization_operation("GRANT operation is not supported by AllowAllAuthorizer"));
     }
 
-    virtual future<> revoke(std::string_view, permission_set, const resource&) const override {
+    virtual future<> revoke(stdx::string_view, permission_set, const resource&) const override {
         return make_exception_future<>(
                 unsupported_authorization_operation("REVOKE operation is not supported by AllowAllAuthorizer"));
     }
@@ -73,7 +74,7 @@ public:
                         "LIST PERMISSIONS operation is not supported by AllowAllAuthorizer"));
     }
 
-    virtual future<> revoke_all(std::string_view) const override {
+    virtual future<> revoke_all(stdx::string_view) const override {
         return make_exception_future(
                 unsupported_authorization_operation("REVOKE operation is not supported by AllowAllAuthorizer"));
     }

auth/authenticated_user.cc

@@ -45,7 +45,7 @@
 
 namespace auth {
 
-authenticated_user::authenticated_user(std::string_view name)
+authenticated_user::authenticated_user(stdx::string_view name)
         : name(sstring(name)) {
 }
 

auth/authenticated_user.hh

@@ -41,7 +41,7 @@
 
 #pragma once
 
-#include <string_view>
+#include <experimental/string_view>
 #include <functional>
 #include <iosfwd>
 #include <optional>
@@ -49,6 +49,7 @@
 #include <seastar/core/sstring.hh>
 
 #include "seastarx.hh"
+#include "stdx.hh"
 
 namespace auth {
 
@@ -66,7 +67,7 @@ public:
     /// An anonymous user.
     ///
     authenticated_user() = default;
-    explicit authenticated_user(std::string_view name);
+    explicit authenticated_user(stdx::string_view name);
 };
 
 ///

auth/authentication_options.hh

@@ -57,7 +57,7 @@ inline bool any_authentication_options(const authentication_options& aos) noexce
 class unsupported_authentication_option : public std::invalid_argument {
 public:
     explicit unsupported_authentication_option(authentication_option k)
-            : std::invalid_argument(format("The {} option is not supported.", k)) {
+            : std::invalid_argument(sprint("The %s option is not supported.", k)) {
     }
 };
 

auth/authenticator.cc

@@ -45,6 +45,7 @@
 #include "auth/common.hh"
 #include "auth/password_authenticator.hh"
 #include "cql3/query_processor.hh"
+#include "db/config.hh"
 #include "utils/class_registrator.hh"
 
 const sstring auth::authenticator::USERNAME_KEY("username");

auth/authenticator.hh

@@ -41,7 +41,7 @@
 
 #pragma once
 
-#include <string_view>
+#include <experimental/string_view>
 #include <memory>
 #include <set>
 #include <stdexcept>
@@ -55,10 +55,10 @@
 
 #include "auth/authentication_options.hh"
 #include "auth/resource.hh"
-#include "auth/sasl_challenge.hh"
 #include "bytes.hh"
 #include "enum_set.hh"
 #include "exceptions/exceptions.hh"
+#include "stdx.hh"
 
 namespace db {
     class config;
@@ -96,7 +96,7 @@ public:
     ///
     /// A fully-qualified (class with package) Java-like name for this implementation.
     ///
-    virtual std::string_view qualified_java_name() const = 0;
+    virtual const sstring& qualified_java_name() const = 0;
 
     virtual bool require_authentication() const = 0;
 
@@ -122,7 +122,7 @@ public:
     ///
     /// The options provided must be a subset of `supported_options()`.
     ///
-    virtual future<> create(std::string_view role_name, const authentication_options& options) const = 0;
+    virtual future<> create(stdx::string_view role_name, const authentication_options& options) const = 0;
 
     ///
     /// Alter the authentication record of an existing user.
@@ -131,25 +131,39 @@ public:
     ///
     /// Callers must ensure that the specification of `alterable_options()` is adhered to.
     ///
-    virtual future<> alter(std::string_view role_name, const authentication_options& options) const = 0;
+    virtual future<> alter(stdx::string_view role_name, const authentication_options& options) const = 0;
 
     ///
     /// Delete the authentication record for a user. This will disallow the user from logging in.
     ///
-    virtual future<> drop(std::string_view role_name) const = 0;
+    virtual future<> drop(stdx::string_view role_name) const = 0;
 
     ///
     /// Query for custom options (those corresponding to \ref authentication_options::options).
     ///
     /// If no options are set the result is an empty container.
     ///
-    virtual future<custom_options> query_custom_options(std::string_view role_name) const = 0;
+    virtual future<custom_options> query_custom_options(stdx::string_view role_name) const = 0;
 
     ///
     /// System resources used internally as part of the implementation. These are made inaccessible to users.
     ///
     virtual const resource_set& protected_resources() const = 0;
 
+    ///
+    /// A stateful SASL challenge which supports many authentication schemes (depending on the implementation).
+    ///
+    class sasl_challenge {
+    public:
+        virtual ~sasl_challenge() = default;
+
+        virtual bytes evaluate_response(bytes_view client_response) = 0;
+
+        virtual bool is_complete() const = 0;
+
+        virtual future<authenticated_user> get_authenticated_user() const = 0;
+    };
+
     virtual ::shared_ptr<sasl_challenge> new_sasl_challenge() const = 0;
 };
 

auth/authorizer.hh

@@ -41,7 +41,7 @@
 
 #pragma once
 
-#include <string_view>
+#include <experimental/string_view>
 #include <functional>
 #include <optional>
 #include <stdexcept>
@@ -54,6 +54,7 @@
 #include "auth/permission.hh"
 #include "auth/resource.hh"
 #include "seastarx.hh"
+#include "stdx.hh"
 
 namespace auth {
 
@@ -100,7 +101,7 @@ public:
     ///
     /// A fully-qualified (class with package) Java-like name for this implementation.
     ///
-    virtual std::string_view qualified_java_name() const = 0;
+    virtual const sstring& qualified_java_name() const = 0;
 
     ///
     /// Query for the permissions granted directly to a role for a particular \ref resource (and not any of its
@@ -116,14 +117,14 @@ public:
     ///
     /// \throws \ref unsupported_authorization_operation if granting permissions is not supported.
     ///
-    virtual future<> grant(std::string_view role_name, permission_set, const resource&) const = 0;
+    virtual future<> grant(stdx::string_view role_name, permission_set, const resource&) const = 0;
 
     ///
     /// Revoke a set of permissions from a role for a particular \ref resource.
     ///
     /// \throws \ref unsupported_authorization_operation if revoking permissions is not supported.
     ///
-    virtual future<> revoke(std::string_view role_name, permission_set, const resource&) const = 0;
+    virtual future<> revoke(stdx::string_view role_name, permission_set, const resource&) const = 0;
 
     ///
     /// Query for all directly granted permissions.
@@ -137,7 +138,7 @@ public:
     ///
     /// \throws \ref unsupported_authorization_operation if revoking permissions is not supported.
     ///
-    virtual future<> revoke_all(std::string_view role_name) const = 0;
+    virtual future<> revoke_all(stdx::string_view role_name) const = 0;
 
     ///
     /// Revoke all permissions granted to any role for a particular resource.

auth/common.cc

@@ -48,9 +48,9 @@ future<> do_after_system_ready(seastar::abort_source& as, seastar::noncopyable_f
     struct empty_state { };
     return delay_until_system_ready(as).then([&as, func = std::move(func)] () mutable {
         return exponential_backoff_retry::do_until_value(1s, 1min, as, [func = std::move(func)] {
-            return func().then_wrapped([] (auto&& f) -> std::optional<empty_state> {
+            return func().then_wrapped([] (auto&& f) -> stdx::optional<empty_state> {
                 if (f.failed()) {
-                    auth_log.debug("Auth task failed with error, rescheduling: {}", f.get_exception());
+                    auth_log.info("Auth task failed with error, rescheduling: {}", f.get_exception());
                     return { };
                 }
                 return { empty_state() };
@@ -59,15 +59,17 @@ future<> do_after_system_ready(seastar::abort_source& as, seastar::noncopyable_f
     }).discard_result();
 }
 
-static future<> create_metadata_table_if_missing_impl(
-        std::string_view table_name,
+future<> create_metadata_table_if_missing(
+        stdx::string_view table_name,
         cql3::query_processor& qp,
-        std::string_view cql,
+        stdx::string_view cql,
         ::service::migration_manager& mm) {
-    static auto ignore_existing = [] (seastar::noncopyable_function<future<>()> func) {
-        return futurize_apply(std::move(func)).handle_exception_type([] (exceptions::already_exists_exception& ignored) { });
-    };
-    auto& db = qp.db();
+    auto& db = qp.db().local();
+
+    if (db.has_schema(meta::AUTH_KS, sstring(table_name))) {
+        return make_ready_future<>();
+    }
+
     auto parsed_statement = static_pointer_cast<cql3::statements::raw::cf_statement>(
             cql3::query_processor::parse_statement(cql));
 
@@ -76,36 +78,20 @@ static future<> create_metadata_table_if_missing_impl(
     auto statement = static_pointer_cast<cql3::statements::create_table_statement>(
             parsed_statement->prepare(db, qp.get_cql_stats())->statement);
 
-    const auto schema = statement->get_cf_meta_data(qp.db());
+    const auto schema = statement->get_cf_meta_data(qp.db().local());
     const auto uuid = generate_legacy_id(schema->ks_name(), schema->cf_name());
 
     schema_builder b(schema);
     b.set_uuid(uuid);
-    schema_ptr table = b.build();
-    return ignore_existing([&mm, table = std::move(table)] () {
-        return mm.announce_new_column_family(table, false);
-    });
+
+    return mm.announce_new_column_family(b.build(), false);
 }
 
-future<> create_metadata_table_if_missing(
-        std::string_view table_name,
-        cql3::query_processor& qp,
-        std::string_view cql,
-        ::service::migration_manager& mm) noexcept {
-    return futurize_apply(create_metadata_table_if_missing_impl, table_name, qp, cql, mm);
-}
-
-future<> wait_for_schema_agreement(::service::migration_manager& mm, const database& db, seastar::abort_source& as) {
+future<> wait_for_schema_agreement(::service::migration_manager& mm, const database& db) {
     static const auto pause = [] { return sleep(std::chrono::milliseconds(500)); };
 
-    return do_until([&db, &as] {
-        as.check();
-        return db.get_version() != database::empty_version;
-    }, pause).then([&mm, &as] {
-        return do_until([&mm, &as] {
-            as.check();
-            return mm.have_schema_agreement();
-        }, pause);
+    return do_until([&db] { return db.get_version() != database::empty_version; }, pause).then([&mm] {
+        return do_until([&mm] { return mm.have_schema_agreement(); }, pause);
     });
 }
 

auth/common.hh

@@ -22,7 +22,7 @@
 #pragma once
 
 #include <chrono>
-#include <string_view>
+#include <experimental/string_view>
 
 #include <seastar/core/future.hh>
 #include <seastar/core/abort_source.hh>
@@ -76,12 +76,12 @@ inline future<> delay_until_system_ready(seastar::abort_source& as) {
 future<> do_after_system_ready(seastar::abort_source& as, seastar::noncopyable_function<future<>()> func);
 
 future<> create_metadata_table_if_missing(
-        std::string_view table_name,
+        stdx::string_view table_name,
         cql3::query_processor&,
-        std::string_view cql,
-        ::service::migration_manager&) noexcept;
+        stdx::string_view cql,
+        ::service::migration_manager&);
 
-future<> wait_for_schema_agreement(::service::migration_manager&, const database&, seastar::abort_source&);
+future<> wait_for_schema_agreement(::service::migration_manager&, const database&);
 
 ///
 /// Time-outs for internal, non-local CQL queries.

auth/default_authorizer.cc

@@ -61,7 +61,6 @@ extern "C" {
 #include "cql3/untyped_result_set.hh"
 #include "exceptions/exceptions.hh"
 #include "log.hh"
-#include "database.hh"
 
 namespace auth {
 
@@ -95,13 +94,13 @@ default_authorizer::~default_authorizer() {
 static const sstring legacy_table_name{"permissions"};
 
 bool default_authorizer::legacy_metadata_exists() const {
-    return _qp.db().has_schema(meta::AUTH_KS, legacy_table_name);
+    return _qp.db().local().has_schema(meta::AUTH_KS, legacy_table_name);
 }
 
 future<bool> default_authorizer::any_granted() const {
-    static const sstring query = format("SELECT * FROM {}.{} LIMIT 1", meta::AUTH_KS, PERMISSIONS_CF);
+    static const sstring query = sprint("SELECT * FROM %s.%s LIMIT 1", meta::AUTH_KS, PERMISSIONS_CF);
 
-    return _qp.execute_internal(
+    return _qp.process(
             query,
             db::consistency_level::LOCAL_ONE,
             infinite_timeout_config,
@@ -113,9 +112,9 @@ future<bool> default_authorizer::any_granted() const {
 
 future<> default_authorizer::migrate_legacy_metadata() const {
     alogger.info("Starting migration of legacy permissions metadata.");
-    static const sstring query = format("SELECT * FROM {}.{}", meta::AUTH_KS, legacy_table_name);
+    static const sstring query = sprint("SELECT * FROM %s.%s", meta::AUTH_KS, legacy_table_name);
 
-    return _qp.execute_internal(
+    return _qp.process(
             query,
             db::consistency_level::LOCAL_ONE,
             infinite_timeout_config).then([this](::shared_ptr<cql3::untyped_result_set> results) {
@@ -161,7 +160,7 @@ future<> default_authorizer::start() {
                 _migration_manager).then([this] {
             _finished = do_after_system_ready(_as, [this] {
                 return async([this] {
-                    wait_for_schema_agreement(_migration_manager, _qp.db(), _as).get0();
+                    wait_for_schema_agreement(_migration_manager, _qp.db().local()).get0();
 
                     if (legacy_metadata_exists()) {
                         if (!any_granted().get0()) {
@@ -179,7 +178,7 @@ future<> default_authorizer::start() {
 
 future<> default_authorizer::stop() {
     _as.request_abort();
-    return _finished.handle_exception_type([](const sleep_aborted&) {}).handle_exception_type([](const abort_requested_exception&) {});
+    return _finished.handle_exception_type([](const sleep_aborted&) {});
 }
 
 future<permission_set>
@@ -188,14 +187,15 @@ default_authorizer::authorize(const role_or_anonymous& maybe_role, const resourc
         return make_ready_future<permission_set>(permissions::NONE);
     }
 
-    static const sstring query = format("SELECT {} FROM {}.{} WHERE {} = ? AND {} = ?",
+    static const sstring query = sprint(
+            "SELECT %s FROM %s.%s WHERE %s = ? AND %s = ?",
             PERMISSIONS_NAME,
             meta::AUTH_KS,
             PERMISSIONS_CF,
             ROLE_NAME,
             RESOURCE_NAME);
 
-    return _qp.execute_internal(
+    return _qp.process(
             query,
             db::consistency_level::LOCAL_ONE,
             infinite_timeout_config,
@@ -210,12 +210,13 @@ default_authorizer::authorize(const role_or_anonymous& maybe_role, const resourc
 
 future<>
 default_authorizer::modify(
-        std::string_view role_name,
+        stdx::string_view role_name,
         permission_set set,
         const resource& resource,
-        std::string_view op) const {
+        stdx::string_view op) const {
     return do_with(
-            format("UPDATE {}.{} SET {} = {} {} ? WHERE {} = ? AND {} = ?",
+            sprint(
+                    "UPDATE %s.%s SET %s = %s %s ? WHERE %s = ? AND %s = ?",
                     meta::AUTH_KS,
                     PERMISSIONS_CF,
                     PERMISSIONS_NAME,
@@ -224,7 +225,7 @@ default_authorizer::modify(
                     ROLE_NAME,
                     RESOURCE_NAME),
             [this, &role_name, set, &resource](const auto& query) {
-        return _qp.execute_internal(
+        return _qp.process(
                 query,
                 db::consistency_level::ONE,
                 internal_distributed_timeout_config(),
@@ -233,23 +234,24 @@ default_authorizer::modify(
 }
 
 
-future<> default_authorizer::grant(std::string_view role_name, permission_set set, const resource& resource) const {
+future<> default_authorizer::grant(stdx::string_view role_name, permission_set set, const resource& resource) const {
     return modify(role_name, std::move(set), resource, "+");
 }
 
-future<> default_authorizer::revoke(std::string_view role_name, permission_set set, const resource& resource) const {
+future<> default_authorizer::revoke(stdx::string_view role_name, permission_set set, const resource& resource) const {
     return modify(role_name, std::move(set), resource, "-");
 }
 
 future<std::vector<permission_details>> default_authorizer::list_all() const {
-    static const sstring query = format("SELECT {}, {}, {} FROM {}.{}",
+    static const sstring query = sprint(
+            "SELECT %s, %s, %s FROM %s.%s",
             ROLE_NAME,
             RESOURCE_NAME,
             PERMISSIONS_NAME,
             meta::AUTH_KS,
             PERMISSIONS_CF);
 
-    return _qp.execute_internal(
+    return _qp.process(
             query,
             db::consistency_level::ONE,
             internal_distributed_timeout_config(),
@@ -270,13 +272,14 @@ future<std::vector<permission_details>> default_authorizer::list_all() const {
     });
 }
 
-future<> default_authorizer::revoke_all(std::string_view role_name) const {
-    static const sstring query = format("DELETE FROM {}.{} WHERE {} = ?",
+future<> default_authorizer::revoke_all(stdx::string_view role_name) const {
+    static const sstring query = sprint(
+            "DELETE FROM %s.%s WHERE %s = ?",
             meta::AUTH_KS,
             PERMISSIONS_CF,
             ROLE_NAME);
 
-    return _qp.execute_internal(
+    return _qp.process(
             query,
             db::consistency_level::ONE,
             internal_distributed_timeout_config(),
@@ -290,13 +293,14 @@ future<> default_authorizer::revoke_all(std::string_view role_name) const {
 }
 
 future<> default_authorizer::revoke_all(const resource& resource) const {
-    static const sstring query = format("SELECT {} FROM {}.{} WHERE {} = ? ALLOW FILTERING",
+    static const sstring query = sprint(
+            "SELECT %s FROM %s.%s WHERE %s = ? ALLOW FILTERING",
             ROLE_NAME,
             meta::AUTH_KS,
             PERMISSIONS_CF,
             RESOURCE_NAME);
 
-    return _qp.execute_internal(
+    return _qp.process(
             query,
             db::consistency_level::LOCAL_ONE,
             infinite_timeout_config,
@@ -307,13 +311,14 @@ future<> default_authorizer::revoke_all(const resource& resource) const {
                     res->begin(),
                     res->end(),
                     [this, res, resource](const cql3::untyped_result_set::row& r) {
-                static const sstring query = format("DELETE FROM {}.{} WHERE {} = ? AND {} = ?",
+                static const sstring query = sprint(
+                        "DELETE FROM %s.%s WHERE %s = ? AND %s = ?",
                         meta::AUTH_KS,
                         PERMISSIONS_CF,
                         ROLE_NAME,
                         RESOURCE_NAME);
 
-                return _qp.execute_internal(
+                return _qp.process(
                         query,
                         db::consistency_level::LOCAL_ONE,
                         infinite_timeout_config,

auth/default_authorizer.hh

@@ -71,19 +71,19 @@ public:
 
     virtual future<> stop() override;
 
-    virtual std::string_view qualified_java_name() const override {
+    virtual const sstring& qualified_java_name() const override {
         return default_authorizer_name();
     }
 
     virtual future<permission_set> authorize(const role_or_anonymous&, const resource&) const override;
 
-    virtual future<> grant(std::string_view, permission_set, const resource&) const override;
+    virtual future<> grant(stdx::string_view, permission_set, const resource&) const override;
 
-    virtual future<> revoke( std::string_view, permission_set, const resource&) const override;
+    virtual future<> revoke( stdx::string_view, permission_set, const resource&) const override;
 
     virtual future<std::vector<permission_details>> list_all() const override;
 
-    virtual future<> revoke_all(std::string_view) const override;
+    virtual future<> revoke_all(stdx::string_view) const override;
 
     virtual future<> revoke_all(const resource&) const override;
 
@@ -96,7 +96,7 @@ private:
 
     future<> migrate_legacy_metadata() const;
 
-    future<> modify(std::string_view, permission_set, const resource&, std::string_view) const;
+    future<> modify(stdx::string_view, permission_set, const resource&, stdx::string_view) const;
 };
 
 } /* namespace auth */

auth/password_authenticator.cc

@@ -41,24 +41,25 @@
 
 #include "auth/password_authenticator.hh"
 
+extern "C" {
+#include <crypt.h>
+#include <unistd.h>
+}
+
 #include <algorithm>
 #include <chrono>
 #include <random>
-#include <string_view>
-#include <optional>
 
 #include <boost/algorithm/cxx11/all_of.hpp>
 #include <seastar/core/reactor.hh>
 
 #include "auth/authenticated_user.hh"
 #include "auth/common.hh"
-#include "auth/passwords.hh"
 #include "auth/roles-metadata.hh"
 #include "cql3/untyped_result_set.hh"
 #include "log.hh"
 #include "service/migration_manager.hh"
 #include "utils/class_registrator.hh"
-#include "database.hh"
 
 namespace auth {
 
@@ -81,8 +82,6 @@ static const class_registrator<
         cql3::query_processor&,
         ::service::migration_manager&> password_auth_reg("org.apache.cassandra.auth.PasswordAuthenticator");
 
-static thread_local auto rng_for_salt = std::default_random_engine(std::random_device{}());
-
 password_authenticator::~password_authenticator() {
 }
 
@@ -92,29 +91,99 @@ password_authenticator::password_authenticator(cql3::query_processor& qp, ::serv
     , _stopped(make_ready_future<>()) {
 }
 
+// TODO: blowfish
+// Origin uses Java bcrypt library, i.e. blowfish salt
+// generation and hashing, which is arguably a "better"
+// password hash than sha/md5 versions usually available in
+// crypt_r. Otoh, glibc 2.7+ uses a modified sha512 algo
+// which should be the same order of safe, so the only
+// real issue should be salted hash compatibility with
+// origin if importing system tables from there.
+//
+// Since bcrypt/blowfish is _not_ (afaict) not available
+// as a dev package/lib on most linux distros, we'd have to
+// copy and compile for example OWL  crypto
+// (http://cvsweb.openwall.com/cgi/cvsweb.cgi/Owl/packages/glibc/crypt_blowfish/)
+// to be fully bit-compatible.
+//
+// Until we decide this is needed, let's just use crypt_r,
+// and some old-fashioned random salt generation.
+
+static constexpr size_t rand_bytes = 16;
+static thread_local crypt_data tlcrypt = { 0, };
+
+static sstring hashpw(const sstring& pass, const sstring& salt) {
+    auto res = crypt_r(pass.c_str(), salt.c_str(), &tlcrypt);
+    if (res == nullptr) {
+        throw std::system_error(errno, std::system_category());
+    }
+    return res;
+}
+
+static bool checkpw(const sstring& pass, const sstring& salted_hash) {
+    auto tmp = hashpw(pass, salted_hash);
+    return tmp == salted_hash;
+}
+
+static sstring gensalt() {
+    static sstring prefix;
+
+    std::random_device rd;
+    std::default_random_engine e1(rd());
+    std::uniform_int_distribution<char> dist;
+
+    sstring valid_salt = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789./";
+    sstring input(rand_bytes, 0);
+
+    for (char&c : input) {
+        c = valid_salt[dist(e1) % valid_salt.size()];
+    }
+
+    sstring salt;
+
+    if (!prefix.empty()) {
+        return prefix + input;
+    }
+
+    // Try in order:
+    // blowfish 2011 fix, blowfish, sha512, sha256, md5
+    for (sstring pfx : { "$2y$", "$2a$", "$6$", "$5$", "$1$" }) {
+        salt = pfx + input;
+        const char* e = crypt_r("fisk", salt.c_str(), &tlcrypt);
+
+        if (e && (e[0] != '*')) {
+            prefix = pfx;
+            return salt;
+        }
+    }
+    throw std::runtime_error("Could not initialize hashing algorithm");
+}
+
+static sstring hashpw(const sstring& pass) {
+    return hashpw(pass, gensalt());
+}
+
 static bool has_salted_hash(const cql3::untyped_result_set_row& row) {
     return !row.get_or<sstring>(SALTED_HASH, "").empty();
 }
 
-static const sstring& update_row_query() {
-    static const sstring update_row_query = format("UPDATE {} SET {} = ? WHERE {} = ?",
-            meta::roles_table::qualified_name(),
-            SALTED_HASH,
-            meta::roles_table::role_col_name);
-    return update_row_query;
-}
+static const sstring update_row_query = sprint(
+        "UPDATE %s SET %s = ? WHERE %s = ?",
+        meta::roles_table::qualified_name(),
+        SALTED_HASH,
+        meta::roles_table::role_col_name);
 
 static const sstring legacy_table_name{"credentials"};
 
 bool password_authenticator::legacy_metadata_exists() const {
-    return _qp.db().has_schema(meta::AUTH_KS, legacy_table_name);
+    return _qp.db().local().has_schema(meta::AUTH_KS, legacy_table_name);
 }
 
 future<> password_authenticator::migrate_legacy_metadata() const {
     plogger.info("Starting migration of legacy authentication metadata.");
-    static const sstring query = format("SELECT * FROM {}.{}", meta::AUTH_KS, legacy_table_name);
+    static const sstring query = sprint("SELECT * FROM %s.%s", meta::AUTH_KS, legacy_table_name);
 
-    return _qp.execute_internal(
+    return _qp.process(
             query,
             db::consistency_level::QUORUM,
             internal_distributed_timeout_config()).then([this](::shared_ptr<cql3::untyped_result_set> results) {
@@ -122,8 +191,8 @@ future<> password_authenticator::migrate_legacy_metadata() const {
             auto username = row.get_as<sstring>("username");
             auto salted_hash = row.get_as<sstring>(SALTED_HASH);
 
-            return _qp.execute_internal(
-                    update_row_query(),
+            return _qp.process(
+                    update_row_query,
                     consistency_for_user(username),
                     internal_distributed_timeout_config(),
                     {std::move(salted_hash), username}).discard_result();
@@ -139,11 +208,11 @@ future<> password_authenticator::migrate_legacy_metadata() const {
 future<> password_authenticator::create_default_if_missing() const {
     return default_role_row_satisfies(_qp, &has_salted_hash).then([this](bool exists) {
         if (!exists) {
-            return _qp.execute_internal(
-                    update_row_query(),
+            return _qp.process(
+                    update_row_query,
                     db::consistency_level::QUORUM,
                     internal_distributed_timeout_config(),
-                    {passwords::hash(DEFAULT_USER_PASSWORD, rng_for_salt), DEFAULT_USER_NAME}).then([](auto&&) {
+                    {hashpw(DEFAULT_USER_PASSWORD), DEFAULT_USER_NAME}).then([](auto&&) {
                 plogger.info("Created default superuser authentication record.");
             });
         }
@@ -154,6 +223,8 @@ future<> password_authenticator::create_default_if_missing() const {
 
 future<> password_authenticator::start() {
      return once_among_shards([this] {
+         gensalt(); // do this once to determine usable hashing
+
          auto f = create_metadata_table_if_missing(
                  meta::roles_table::name,
                  _qp,
@@ -162,7 +233,7 @@ future<> password_authenticator::start() {
 
          _stopped = do_after_system_ready(_as, [this] {
              return async([this] {
-                 wait_for_schema_agreement(_migration_manager, _qp.db(), _as).get0();
+                 wait_for_schema_agreement(_migration_manager, _qp.db().local()).get0();
 
                  if (any_nondefault_role_row_satisfies(_qp, &has_salted_hash).get0()) {
                      if (legacy_metadata_exists()) {
@@ -187,17 +258,17 @@ future<> password_authenticator::start() {
 
 future<> password_authenticator::stop() {
     _as.request_abort();
-    return _stopped.handle_exception_type([] (const sleep_aborted&) { }).handle_exception_type([](const abort_requested_exception&) {});
+    return _stopped.handle_exception_type([] (const sleep_aborted&) { });
 }
 
-db::consistency_level password_authenticator::consistency_for_user(std::string_view role_name) {
+db::consistency_level password_authenticator::consistency_for_user(stdx::string_view role_name) {
     if (role_name == DEFAULT_USER_NAME) {
         return db::consistency_level::QUORUM;
     }
     return db::consistency_level::LOCAL_ONE;
 }
 
-std::string_view password_authenticator::qualified_java_name() const {
+const sstring& password_authenticator::qualified_java_name() const {
     return password_authenticator_name();
 }
 
@@ -216,10 +287,10 @@ authentication_option_set password_authenticator::alterable_options() const {
 future<authenticated_user> password_authenticator::authenticate(
                 const credentials_map& credentials) const {
     if (!credentials.count(USERNAME_KEY)) {
-        throw exceptions::authentication_exception(format("Required key '{}' is missing", USERNAME_KEY));
+        throw exceptions::authentication_exception(sprint("Required key '%s' is missing", USERNAME_KEY));
     }
     if (!credentials.count(PASSWORD_KEY)) {
-        throw exceptions::authentication_exception(format("Required key '{}' is missing", PASSWORD_KEY));
+        throw exceptions::authentication_exception(sprint("Required key '%s' is missing", PASSWORD_KEY));
     }
 
     auto& username = credentials.at(USERNAME_KEY);
@@ -231,12 +302,13 @@ future<authenticated_user> password_authenticator::authenticate(
     // Rely on query processing caching statements instead, and lets assume
     // that a map lookup string->statement is not gonna kill us much.
     return futurize_apply([this, username, password] {
-        static const sstring query = format("SELECT {} FROM {} WHERE {} = ?",
+        static const sstring query = sprint(
+                "SELECT %s FROM %s WHERE %s = ?",
                 SALTED_HASH,
                 meta::roles_table::qualified_name(),
                 meta::roles_table::role_col_name);
 
-        return _qp.execute_internal(
+        return _qp.process(
                 query,
                 consistency_for_user(username),
                 internal_distributed_timeout_config(),
@@ -245,11 +317,11 @@ future<authenticated_user> password_authenticator::authenticate(
     }).then_wrapped([=](future<::shared_ptr<cql3::untyped_result_set>> f) {
         try {
             auto res = f.get0();
-            auto salted_hash = std::optional<sstring>();
+            auto salted_hash = std::experimental::optional<sstring>();
             if (!res->empty()) {
                 salted_hash = res->one().get_opt<sstring>(SALTED_HASH);
             }
-            if (!salted_hash || !passwords::check(password, *salted_hash)) {
+            if (!salted_hash || !checkpw(password, *salted_hash)) {
                 throw exceptions::authentication_exception("Username and/or password are incorrect");
             }
             return make_ready_future<authenticated_user>(username);
@@ -257,56 +329,56 @@ future<authenticated_user> password_authenticator::authenticate(
             std::throw_with_nested(exceptions::authentication_exception("Could not verify password"));
         } catch (exceptions::request_execution_exception& e) {
             std::throw_with_nested(exceptions::authentication_exception(e.what()));
-        } catch (exceptions::authentication_exception& e) {
-            std::throw_with_nested(e);
         } catch (...) {
             std::throw_with_nested(exceptions::authentication_exception("authentication failed"));
         }
     });
 }
 
-future<> password_authenticator::create(std::string_view role_name, const authentication_options& options) const {
+future<> password_authenticator::create(stdx::string_view role_name, const authentication_options& options) const {
     if (!options.password) {
         return make_ready_future<>();
     }
 
-    return _qp.execute_internal(
-            update_row_query(),
+    return _qp.process(
+            update_row_query,
             consistency_for_user(role_name),
             internal_distributed_timeout_config(),
-            {passwords::hash(*options.password, rng_for_salt), sstring(role_name)}).discard_result();
+            {hashpw(*options.password), sstring(role_name)}).discard_result();
 }
 
-future<> password_authenticator::alter(std::string_view role_name, const authentication_options& options) const {
+future<> password_authenticator::alter(stdx::string_view role_name, const authentication_options& options) const {
     if (!options.password) {
         return make_ready_future<>();
     }
 
-    static const sstring query = format("UPDATE {} SET {} = ? WHERE {} = ?",
+    static const sstring query = sprint(
+            "UPDATE %s SET %s = ? WHERE %s = ?",
             meta::roles_table::qualified_name(),
             SALTED_HASH,
             meta::roles_table::role_col_name);
 
-    return _qp.execute_internal(
+    return _qp.process(
             query,
             consistency_for_user(role_name),
             internal_distributed_timeout_config(),
-            {passwords::hash(*options.password, rng_for_salt), sstring(role_name)}).discard_result();
+            {hashpw(*options.password), sstring(role_name)}).discard_result();
 }
 
-future<> password_authenticator::drop(std::string_view name) const {
-    static const sstring query = format("DELETE {} FROM {} WHERE {} = ?",
+future<> password_authenticator::drop(stdx::string_view name) const {
+    static const sstring query = sprint(
+            "DELETE %s FROM %s WHERE %s = ?",
             SALTED_HASH,
             meta::roles_table::qualified_name(),
             meta::roles_table::role_col_name);
 
-    return _qp.execute_internal(
+    return _qp.process(
             query, consistency_for_user(name),
             internal_distributed_timeout_config(),
             {sstring(name)}).discard_result();
 }
 
-future<custom_options> password_authenticator::query_custom_options(std::string_view role_name) const {
+future<custom_options> password_authenticator::query_custom_options(stdx::string_view role_name) const {
     return make_ready_future<custom_options>();
 }
 
@@ -315,13 +387,75 @@ const resource_set& password_authenticator::protected_resources() const {
     return resources;
 }
 
-::shared_ptr<sasl_challenge> password_authenticator::new_sasl_challenge() const {
-    return ::make_shared<plain_sasl_challenge>([this](std::string_view username, std::string_view password) {
-        credentials_map credentials{};
-        credentials[USERNAME_KEY] = sstring(username);
-        credentials[PASSWORD_KEY] = sstring(password);
-        return this->authenticate(credentials);
-    });
+::shared_ptr<authenticator::sasl_challenge> password_authenticator::new_sasl_challenge() const {
+    class plain_text_password_challenge : public sasl_challenge {
+        const password_authenticator& _self;
+
+    public:
+        plain_text_password_challenge(const password_authenticator& self) : _self(self) {
+        }
+
+        /**
+         * SASL PLAIN mechanism specifies that credentials are encoded in a
+         * sequence of UTF-8 bytes, delimited by 0 (US-ASCII NUL).
+         * The form is : {code}authzId<NUL>authnId<NUL>password<NUL>{code}
+         * authzId is optional, and in fact we don't care about it here as we'll
+         * set the authzId to match the authnId (that is, there is no concept of
+         * a user being authorized to act on behalf of another).
+         *
+         * @param bytes encoded credentials string sent by the client
+         * @return map containing the username/password pairs in the form an IAuthenticator
+         * would expect
+         * @throws javax.security.sasl.SaslException
+         */
+        bytes evaluate_response(bytes_view client_response) override {
+            plogger.debug("Decoding credentials from client token");
+
+            sstring username, password;
+
+            auto b = client_response.crbegin();
+            auto e = client_response.crend();
+            auto i = b;
+
+            while (i != e) {
+                if (*i == 0) {
+                    sstring tmp(i.base(), b.base());
+                    if (password.empty()) {
+                        password = std::move(tmp);
+                    } else if (username.empty()) {
+                        username = std::move(tmp);
+                    }
+                    b = ++i;
+                    continue;
+                }
+                ++i;
+            }
+
+            if (username.empty()) {
+                throw exceptions::authentication_exception("Authentication ID must not be null");
+            }
+            if (password.empty()) {
+                throw exceptions::authentication_exception("Password must not be null");
+            }
+
+            _credentials[USERNAME_KEY] = std::move(username);
+            _credentials[PASSWORD_KEY] = std::move(password);
+            _complete = true;
+            return {};
+        }
+
+        bool is_complete() const override {
+            return _complete;
+        }
+
+        future<authenticated_user> get_authenticated_user() const override {
+            return _self.authenticate(_credentials);
+        }
+    private:
+        credentials_map _credentials;
+        bool _complete = false;
+    };
+    return ::make_shared<plain_text_password_challenge>(*this);
 }
 
 }

auth/password_authenticator.hh

@@ -61,7 +61,7 @@ class password_authenticator : public authenticator {
     seastar::abort_source _as;
 
 public:
-    static db::consistency_level consistency_for_user(std::string_view role_name);
+    static db::consistency_level consistency_for_user(stdx::string_view role_name);
 
     password_authenticator(cql3::query_processor&, ::service::migration_manager&);
 
@@ -71,7 +71,7 @@ public:
 
     virtual future<> stop() override;
 
-    virtual std::string_view qualified_java_name() const override;
+    virtual const sstring& qualified_java_name() const override;
 
     virtual bool require_authentication() const override;
 
@@ -81,13 +81,13 @@ public:
 
     virtual future<authenticated_user> authenticate(const credentials_map& credentials) const override;
 
-    virtual future<> create(std::string_view role_name, const authentication_options& options) const override;
+    virtual future<> create(stdx::string_view role_name, const authentication_options& options) const override;
 
-    virtual future<> alter(std::string_view role_name, const authentication_options& options) const override;
+    virtual future<> alter(stdx::string_view role_name, const authentication_options& options) const override;
 
-    virtual future<> drop(std::string_view role_name) const override;
+    virtual future<> drop(stdx::string_view role_name) const override;
 
-    virtual future<custom_options> query_custom_options(std::string_view role_name) const override;
+    virtual future<custom_options> query_custom_options(stdx::string_view role_name) const override;
 
     virtual const resource_set& protected_resources() const override;
 

auth/passwords.cc

@@ -1,84 +0,0 @@
-/*
- * Copyright (C) 2018 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "auth/passwords.hh"
-
-#include <cerrno>
-#include <optional>
-
-extern "C" {
-#include <crypt.h>
-#include <unistd.h>
-}
-
-namespace auth::passwords {
-
-static thread_local crypt_data tlcrypt = { 0, };
-
-namespace detail {
-
-scheme identify_best_supported_scheme() {
-    const auto all_schemes = { scheme::bcrypt_y, scheme::bcrypt_a, scheme::sha_512, scheme::sha_256, scheme::md5 };
-    // "Random", for testing schemes.
-    const sstring random_part_of_salt = "aaaabbbbccccdddd";
-
-    for (scheme c : all_schemes) {
-        const sstring salt = sstring(prefix_for_scheme(c)) + random_part_of_salt;
-        const char* e = crypt_r("fisk", salt.c_str(), &tlcrypt);
-
-        if (e && (e[0] != '*')) {
-            return c;
-        }
-    }
-
-    throw no_supported_schemes();
-}
-
-sstring hash_with_salt(const sstring& pass, const sstring& salt) {
-    auto res = crypt_r(pass.c_str(), salt.c_str(), &tlcrypt);
-    if (!res || (res[0] == '*')) {
-        throw std::system_error(errno, std::system_category());
-    }
-    return res;
-}
-
-const char* prefix_for_scheme(scheme c) noexcept {
-    switch (c) {
-    case scheme::bcrypt_y: return "$2y$";
-    case scheme::bcrypt_a: return "$2a$";
-    case scheme::sha_512: return "$6$";
-    case scheme::sha_256: return "$5$";
-    case scheme::md5: return "$1$";
-    default: return nullptr;
-    }
-}
-
-} // namespace detail
-
-no_supported_schemes::no_supported_schemes()
-        : std::runtime_error("No allowed hashing schemes are supported on this system") {
-}
-
-bool check(const sstring& pass, const sstring& salted_hash) {
-    return detail::hash_with_salt(pass, salted_hash) == salted_hash;
-}
-
-} // namespace auth::paswords

auth/passwords.hh

@@ -1,125 +0,0 @@
-/*
- * Copyright (C) 2018 ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-#include <random>
-#include <stdexcept>
-
-#include <seastar/core/sstring.hh>
-
-#include "seastarx.hh"
-
-namespace auth::passwords {
-
-class no_supported_schemes : public std::runtime_error {
-public:
-    no_supported_schemes();
-};
-
-///
-/// Apache Cassandra uses a library to provide the bcrypt scheme. Many Linux implementations do not support bcrypt, so
-/// we support alternatives. The cost is loss of direct compatibility with Apache Cassandra system tables.
-///
-enum class scheme {
-    bcrypt_y,
-    bcrypt_a,
-    sha_512,
-    sha_256,
-    md5
-};
-
-namespace detail {
-
-template <typename RandomNumberEngine>
-sstring generate_random_salt_bytes(RandomNumberEngine& g) {
-    static const sstring valid_bytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789./";
-    static constexpr std::size_t num_bytes = 16;
-    std::uniform_int_distribution<std::size_t> dist(0, valid_bytes.size() - 1);
-    sstring result(num_bytes, 0);
-
-    for (char& c : result) {
-        c = valid_bytes[dist(g)];
-    }
-
-    return result;
-}
-
-///
-/// Test each allowed hashing scheme and report the best supported one on the current system.
-///
-/// \throws \ref no_supported_schemes when none of the known schemes is supported.
-///
-scheme identify_best_supported_scheme();
-
-const char* prefix_for_scheme(scheme) noexcept;
-
-///
-/// Generate a implementation-specific salt string for hashing passwords.
-///
-/// The `RandomNumberEngine` is used to generate the string, which is an implementation-specific length.
-///
-/// \throws \ref no_supported_schemes when no known hashing schemes are supported on the system.
-///
-template <typename RandomNumberEngine>
-sstring generate_salt(RandomNumberEngine& g) {
-    static const scheme scheme = identify_best_supported_scheme();
-    static const sstring prefix = sstring(prefix_for_scheme(scheme));
-    return prefix + generate_random_salt_bytes(g);
-}
-
-///
-/// Hash a password combined with an implementation-specific salt string.
-///
-/// \throws \ref std::system_error when an unexpected implementation-specific error occurs.
-///
-sstring hash_with_salt(const sstring& pass, const sstring& salt);
-
-} // namespace detail
-
-///
-/// Run a one-way hashing function on cleartext to produce encrypted text.
-///
-/// Prior to applying the hashing function, random salt is amended to the cleartext. The random salt bytes are generated
-/// according to the random number engine `g`.
-///
-/// The result is the encrypted cyphertext, and also the salt used but in a implementation-specific format.
-///
-/// \throws \ref std::system_error when the implementation-specific implementation fails to hash the cleartext.
-///
-template <typename RandomNumberEngine>
-sstring hash(const sstring& pass, RandomNumberEngine& g) {
-    return detail::hash_with_salt(pass, detail::generate_salt(g));
-}
-
-///
-/// Check that cleartext matches previously hashed cleartext with salt.
-///
-/// \ref salted_hash is the result of invoking \ref hash, which is the implementation-specific combination of the hashed
-/// password and the salt that was generated for it.
-///
-/// \returns `true` if the cleartext matches the salted hash.
-///
-/// \throws \ref std::system_error when an unexpected implementation-specific error occurs.
-///
-bool check(const sstring& pass, const sstring& salted_hash);
-
-} // namespace auth::passwords

auth/permissions_cache.cc

@@ -24,9 +24,19 @@
 #include "auth/authorizer.hh"
 #include "auth/common.hh"
 #include "auth/service.hh"
+#include "db/config.hh"
 
 namespace auth {
 
+permissions_cache_config permissions_cache_config::from_db_config(const db::config& dc) {
+    permissions_cache_config c;
+    c.max_entries = dc.permissions_cache_max_entries();
+    c.validity_period = std::chrono::milliseconds(dc.permissions_validity_in_ms());
+    c.update_period = std::chrono::milliseconds(dc.permissions_update_interval_in_ms());
+
+    return c;
+}
+
 permissions_cache::permissions_cache(const permissions_cache_config& c, service& ser, logging::logger& log)
         : _cache(c.max_entries, c.validity_period, c.update_period, log, [&ser, &log](const key_type& k) {
               log.debug("Refreshing permissions for {}", k.first);

auth/permissions_cache.hh

@@ -22,7 +22,7 @@
 #pragma once
 
 #include <chrono>
-#include <string_view>
+#include <experimental/string_view>
 #include <functional>
 #include <iostream>
 #include <optional>
@@ -37,6 +37,7 @@
 #include "auth/resource.hh"
 #include "auth/role_or_anonymous.hh"
 #include "log.hh"
+#include "stdx.hh"
 #include "utils/hash.hh"
 #include "utils/loading_cache.hh"
 
@@ -58,6 +59,8 @@ namespace auth {
 class service;
 
 struct permissions_cache_config final {
+    static permissions_cache_config from_db_config(const db::config&);
+
     std::size_t max_entries;
     std::chrono::milliseconds validity_period;
     std::chrono::milliseconds update_period;

auth/resource.cc

@@ -61,7 +61,7 @@ std::ostream& operator<<(std::ostream& os, resource_kind kind) {
     return os;
 }
 
-static const std::unordered_map<resource_kind, std::string_view> roots{
+static const std::unordered_map<resource_kind, stdx::string_view> roots{
         {resource_kind::data, "data"},
         {resource_kind::role, "roles"}};
 
@@ -101,25 +101,24 @@ static permission_set applicable_permissions(const role_resource_view& rv) {
             permission::DESCRIBE>();
 }
 
-resource::resource(resource_kind kind) : _kind(kind) {
-    _parts.emplace_back(roots.at(kind));
+resource::resource(resource_kind kind) : _kind(kind), _parts{sstring(roots.at(kind))}  {
 }
 
-resource::resource(resource_kind kind, utils::small_vector<sstring, 3> parts) : resource(kind) {
+resource::resource(resource_kind kind, std::vector<sstring> parts) : resource(kind) {
+    _parts.reserve(parts.size() + 1);
     _parts.insert(_parts.end(), std::make_move_iterator(parts.begin()), std::make_move_iterator(parts.end()));
 }
 
-resource::resource(data_resource_t, std::string_view keyspace) : resource(resource_kind::data) {
-    _parts.emplace_back(keyspace);
+resource::resource(data_resource_t, stdx::string_view keyspace)
+        : resource(resource_kind::data, std::vector<sstring>{sstring(keyspace)}) {
 }
 
-resource::resource(data_resource_t, std::string_view keyspace, std::string_view table) : resource(resource_kind::data) {
-    _parts.emplace_back(keyspace);
-    _parts.emplace_back(table);
+resource::resource(data_resource_t, stdx::string_view keyspace, stdx::string_view table)
+        : resource(resource_kind::data, std::vector<sstring>{sstring(keyspace), sstring(table)}) {
 }
 
-resource::resource(role_resource_t, std::string_view role) : resource(resource_kind::role) {
-    _parts.emplace_back(role);
+resource::resource(role_resource_t, stdx::string_view role)
+        : resource(resource_kind::role, std::vector<sstring>{sstring(role)}) {
 }
 
 sstring resource::name() const {
@@ -174,7 +173,7 @@ data_resource_view::data_resource_view(const resource& r) : _resource(r) {
     }
 }
 
-std::optional<std::string_view> data_resource_view::keyspace() const {
+std::optional<stdx::string_view> data_resource_view::keyspace() const {
     if (_resource._parts.size() == 1) {
         return {};
     }
@@ -182,7 +181,7 @@ std::optional<std::string_view> data_resource_view::keyspace() const {
     return _resource._parts[1];
 }
 
-std::optional<std::string_view> data_resource_view::table() const {
+std::optional<stdx::string_view> data_resource_view::table() const {
     if (_resource._parts.size() <= 2) {
         return {};
     }
@@ -211,7 +210,7 @@ role_resource_view::role_resource_view(const resource& r) : _resource(r) {
     }
 }
 
-std::optional<std::string_view> role_resource_view::role() const {
+std::optional<stdx::string_view> role_resource_view::role() const {
     if (_resource._parts.size() == 1) {
         return {};
     }
@@ -231,9 +230,9 @@ std::ostream& operator<<(std::ostream& os, const role_resource_view& v) {
     return os;
 }
 
-resource parse_resource(std::string_view name) {
-    static const std::unordered_map<std::string_view, resource_kind> reverse_roots = [] {
-        std::unordered_map<std::string_view, resource_kind> result;
+resource parse_resource(stdx::string_view name) {
+    static const std::unordered_map<stdx::string_view, resource_kind> reverse_roots = [] {
+        std::unordered_map<stdx::string_view, resource_kind> result;
 
         for (const auto& pair : roots) {
             result.emplace(pair.second, pair.first);
@@ -242,7 +241,7 @@ resource parse_resource(std::string_view name) {
         return result;
     }();
 
-    utils::small_vector<sstring, 3> parts;
+    std::vector<sstring> parts;
     boost::split(parts, name, [](char ch) { return ch == '/'; });
 
     if (parts.empty()) {

auth/resource.hh

@@ -41,7 +41,7 @@
 
 #pragma once
 
-#include <string_view>
+#include <experimental/string_view>
 #include <iostream>
 #include <optional>
 #include <stdexcept>
@@ -54,15 +54,15 @@
 
 #include "auth/permission.hh"
 #include "seastarx.hh"
+#include "stdx.hh"
 #include "utils/hash.hh"
-#include "utils/small_vector.hh"
 
 namespace auth {
 
 class invalid_resource_name : public std::invalid_argument {
 public:
-    explicit invalid_resource_name(std::string_view name)
-            : std::invalid_argument(format("The resource name '{}' is invalid.", name)) {
+    explicit invalid_resource_name(stdx::string_view name)
+            : std::invalid_argument(sprint("The resource name '%s' is invalid.", name)) {
     }
 };
 
@@ -98,16 +98,16 @@ struct role_resource_t final {};
 class resource final {
     resource_kind _kind;
 
-    utils::small_vector<sstring, 3> _parts;
+    std::vector<sstring> _parts;
 
 public:
     ///
     /// A root resource of a particular kind.
     ///
     explicit resource(resource_kind);
-    resource(data_resource_t, std::string_view keyspace);
-    resource(data_resource_t, std::string_view keyspace, std::string_view table);
-    resource(role_resource_t, std::string_view role);
+    resource(data_resource_t, stdx::string_view keyspace);
+    resource(data_resource_t, stdx::string_view keyspace, stdx::string_view table);
+    resource(role_resource_t, stdx::string_view role);
 
     resource_kind kind() const noexcept {
         return _kind;
@@ -123,7 +123,7 @@ public:
     permission_set applicable_permissions() const;
 
 private:
-    resource(resource_kind, utils::small_vector<sstring, 3> parts);
+    resource(resource_kind, std::vector<sstring> parts);
 
     friend class std::hash<resource>;
     friend class data_resource_view;
@@ -131,7 +131,7 @@ private:
 
     friend bool operator<(const resource&, const resource&);
     friend bool operator==(const resource&, const resource&);
-    friend resource parse_resource(std::string_view);
+    friend resource parse_resource(stdx::string_view);
 };
 
 bool operator<(const resource&, const resource&);
@@ -150,7 +150,7 @@ class resource_kind_mismatch : public std::invalid_argument {
 public:
     explicit resource_kind_mismatch(resource_kind expected, resource_kind actual)
         : std::invalid_argument(
-            format("This resource has kind '{}', but was expected to have kind '{}'.", actual, expected)) {
+            sprint("This resource has kind '%s', but was expected to have kind '%s'.", actual, expected)) {
     }
 };
 
@@ -166,9 +166,9 @@ public:
     ///
     explicit data_resource_view(const resource& r);
 
-    std::optional<std::string_view> keyspace() const;
+    std::optional<stdx::string_view> keyspace() const;
 
-    std::optional<std::string_view> table() const;
+    std::optional<stdx::string_view> table() const;
 };
 
 std::ostream& operator<<(std::ostream&, const data_resource_view&);
@@ -187,7 +187,7 @@ public:
     ///
     explicit role_resource_view(const resource&);
 
-    std::optional<std::string_view> role() const;
+    std::optional<stdx::string_view> role() const;
 };
 
 std::ostream& operator<<(std::ostream&, const role_resource_view&);
@@ -197,20 +197,20 @@ std::ostream& operator<<(std::ostream&, const role_resource_view&);
 ///
 /// \throws \ref invalid_resource_name when the name is malformed.
 ///
-resource parse_resource(std::string_view name);
+resource parse_resource(stdx::string_view name);
 
 const resource& root_data_resource();
 
-inline resource make_data_resource(std::string_view keyspace) {
+inline resource make_data_resource(stdx::string_view keyspace) {
     return resource(data_resource_t{}, keyspace);
 }
-inline resource make_data_resource(std::string_view keyspace, std::string_view table) {
+inline resource make_data_resource(stdx::string_view keyspace, stdx::string_view table) {
     return resource(data_resource_t{}, keyspace, table);
 }
 
 const resource& root_role_resource();
 
-inline resource make_role_resource(std::string_view role) {
+inline resource make_role_resource(stdx::string_view role) {
     return resource(role_resource_t{}, role);
 }
 

auth/role_manager.hh

@@ -21,7 +21,7 @@
 
 #pragma once
 
-#include <string_view>
+#include <experimental/string_view>
 #include <memory>
 #include <optional>
 #include <stdexcept>
@@ -33,7 +33,7 @@
 
 #include "auth/resource.hh"
 #include "seastarx.hh"
-#include "exceptions/exceptions.hh"
+#include "stdx.hh"
 
 namespace auth {
 
@@ -53,38 +53,38 @@ struct role_config_update final {
 ///
 /// A logical argument error for a role-management operation.
 ///
-class roles_argument_exception : public exceptions::invalid_request_exception {
+class roles_argument_exception : public std::invalid_argument {
 public:
-    using exceptions::invalid_request_exception::invalid_request_exception;
+    using std::invalid_argument::invalid_argument;
 };
 
 class role_already_exists : public roles_argument_exception {
 public:
-    explicit role_already_exists(std::string_view role_name)
-            : roles_argument_exception(format("Role {} already exists.", role_name)) {
+    explicit role_already_exists(stdx::string_view role_name)
+            : roles_argument_exception(sprint("Role %s already exists.", role_name)) {
     }
 };
 
 class nonexistant_role : public roles_argument_exception {
 public:
-    explicit nonexistant_role(std::string_view role_name)
-            : roles_argument_exception(format("Role {} doesn't exist.", role_name)) {
+    explicit nonexistant_role(stdx::string_view role_name)
+            : roles_argument_exception(sprint("Role %s doesn't exist.", role_name)) {
     }
 };
 
 class role_already_included : public roles_argument_exception {
 public:
-    role_already_included(std::string_view grantee_name, std::string_view role_name)
+    role_already_included(stdx::string_view grantee_name, stdx::string_view role_name)
             : roles_argument_exception(
-                      format("{} already includes role {}.", grantee_name, role_name)) {
+                      sprint("%s already includes role %s.", grantee_name, role_name)) {
     }
 };
 
 class revoke_ungranted_role : public roles_argument_exception {
 public:
-    revoke_ungranted_role(std::string_view revokee_name, std::string_view role_name)
+    revoke_ungranted_role(stdx::string_view revokee_name, stdx::string_view role_name)
             : roles_argument_exception(
-                      format("{} was not granted role {}, so it cannot be revoked.", revokee_name, role_name)) {
+                      sprint("%s was not granted role %s, so it cannot be revoked.", revokee_name, role_name)) {
     }
 };
 
@@ -104,7 +104,7 @@ class role_manager {
 public:
     virtual ~role_manager() = default;
 
-    virtual std::string_view qualified_java_name() const noexcept = 0;
+    virtual stdx::string_view qualified_java_name() const noexcept = 0;
 
     virtual const resource_set& protected_resources() const = 0;
 
@@ -115,17 +115,17 @@ public:
     ///
     /// \returns an exceptional future with \ref role_already_exists for a role that has previously been created.
     ///
-    virtual future<> create(std::string_view role_name, const role_config&) const = 0;
+    virtual future<> create(stdx::string_view role_name, const role_config&) const = 0;
 
     ///
     /// \returns an exceptional future with \ref nonexistant_role if the role does not exist.
     ///
-    virtual future<> drop(std::string_view role_name) const = 0;
+    virtual future<> drop(stdx::string_view role_name) const = 0;
 
     ///
     /// \returns an exceptional future with \ref nonexistant_role if the role does not exist.
     ///
-    virtual future<> alter(std::string_view role_name, const role_config_update&) const = 0;
+    virtual future<> alter(stdx::string_view role_name, const role_config_update&) const = 0;
 
     ///
     /// Grant `role_name` to `grantee_name`.
@@ -135,7 +135,7 @@ public:
     /// \returns an exceptional future with \ref role_already_included if granting the role would be redundant, or
     /// create a cycle.
     ///
-    virtual future<> grant(std::string_view grantee_name, std::string_view role_name) const = 0;
+    virtual future<> grant(stdx::string_view grantee_name, stdx::string_view role_name) const = 0;
 
     ///
     /// Revoke `role_name` from `revokee_name`.
@@ -144,26 +144,26 @@ public:
     ///
     /// \returns an exceptional future with \ref revoke_ungranted_role if the role was not granted.
     ///
-    virtual future<> revoke(std::string_view revokee_name, std::string_view role_name) const = 0;
+    virtual future<> revoke(stdx::string_view revokee_name, stdx::string_view role_name) const = 0;
 
     ///
     /// \returns an exceptional future with \ref nonexistant_role if the role does not exist.
     ///
-    virtual future<role_set> query_granted(std::string_view grantee, recursive_role_query) const = 0;
+    virtual future<role_set> query_granted(stdx::string_view grantee, recursive_role_query) const = 0;
 
     virtual future<role_set> query_all() const = 0;
 
-    virtual future<bool> exists(std::string_view role_name) const = 0;
+    virtual future<bool> exists(stdx::string_view role_name) const = 0;
 
     ///
     /// \returns an exceptional future with \ref nonexistant_role if the role does not exist.
     ///
-    virtual future<bool> is_superuser(std::string_view role_name) const = 0;
+    virtual future<bool> is_superuser(stdx::string_view role_name) const = 0;
 
     ///
     /// \returns an exceptional future with \ref nonexistant_role if the role does not exist.
     ///
-    virtual future<bool> can_login(std::string_view role_name) const = 0;
+    virtual future<bool> can_login(stdx::string_view role_name) const = 0;
 };
 
 }

auth/role_or_anonymous.hh

@@ -21,7 +21,7 @@
 
 #pragma once
 
-#include <string_view>
+#include <experimental/string_view>
 #include <functional>
 #include <iosfwd>
 #include <optional>
@@ -29,6 +29,7 @@
 #include <seastar/core/sstring.hh>
 
 #include "seastarx.hh"
+#include "stdx.hh"
 
 namespace auth {
 
@@ -37,7 +38,7 @@ public:
     std::optional<sstring> name{};
 
     role_or_anonymous() = default;
-    role_or_anonymous(std::string_view name) : name(name) {
+    role_or_anonymous(stdx::string_view name) : name(name) {
     }
 };
 

auth/roles-metadata.cc

@@ -36,7 +36,7 @@ namespace meta {
 
 namespace roles_table {
 
-std::string_view creation_query() {
+stdx::string_view creation_query() {
     static const sstring instance = sprint(
             "CREATE TABLE %s ("
             "  %s text PRIMARY KEY,"
@@ -51,7 +51,7 @@ std::string_view creation_query() {
     return instance;
 }
 
-std::string_view qualified_name() noexcept {
+stdx::string_view qualified_name() noexcept {
     static const sstring instance = AUTH_KS + "." + sstring(name);
     return instance;
 }
@@ -63,19 +63,20 @@ std::string_view qualified_name() noexcept {
 future<bool> default_role_row_satisfies(
         cql3::query_processor& qp,
         std::function<bool(const cql3::untyped_result_set_row&)> p) {
-    static const sstring query = format("SELECT * FROM {} WHERE {} = ?",
+    static const sstring query = sprint(
+            "SELECT * FROM %s WHERE %s = ?",
             meta::roles_table::qualified_name(),
             meta::roles_table::role_col_name);
 
     return do_with(std::move(p), [&qp](const auto& p) {
-        return qp.execute_internal(
+        return qp.process(
                 query,
                 db::consistency_level::ONE,
                 infinite_timeout_config,
                 {meta::DEFAULT_SUPERUSER_NAME},
                 true).then([&qp, &p](::shared_ptr<cql3::untyped_result_set> results) {
             if (results->empty()) {
-                return qp.execute_internal(
+                return qp.process(
                         query,
                         db::consistency_level::QUORUM,
                         internal_distributed_timeout_config(),
@@ -97,10 +98,10 @@ future<bool> default_role_row_satisfies(
 future<bool> any_nondefault_role_row_satisfies(
         cql3::query_processor& qp,
         std::function<bool(const cql3::untyped_result_set_row&)> p) {
-    static const sstring query = format("SELECT * FROM {}", meta::roles_table::qualified_name());
+    static const sstring query = sprint("SELECT * FROM %s", meta::roles_table::qualified_name());
 
     return do_with(std::move(p), [&qp](const auto& p) {
-        return qp.execute_internal(
+        return qp.process(
                 query,
                 db::consistency_level::QUORUM,
                 internal_distributed_timeout_config()).then([&p](::shared_ptr<cql3::untyped_result_set> results) {

auth/roles-metadata.hh

@@ -21,12 +21,13 @@
 
 #pragma once
 
-#include <string_view>
+#include <experimental/string_view>
 #include <functional>
 
 #include <seastar/core/future.hh>
 
 #include "seastarx.hh"
+#include "stdx.hh"
 
 namespace cql3 {
 class query_processor;
@@ -39,13 +40,13 @@ namespace meta {
 
 namespace roles_table {
 
-std::string_view creation_query();
+stdx::string_view creation_query();
 
-constexpr std::string_view name{"roles", 5};
+constexpr stdx::string_view name{"roles", 5};
 
-std::string_view qualified_name() noexcept;
+stdx::string_view qualified_name() noexcept;
 
-constexpr std::string_view role_col_name{"role", 4};
+constexpr stdx::string_view role_col_name{"role", 4};
 
 }
 

auth/sasl_challenge.cc

@@ -1,102 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/*
- * Copyright (C) 2019 ScyllaDB
- *
- * Modified by ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "auth/sasl_challenge.hh"
-
-#include "exceptions/exceptions.hh"
-
-namespace auth {
-
-/**
- * SASL PLAIN mechanism specifies that credentials are encoded in a
- * sequence of UTF-8 bytes, delimited by 0 (US-ASCII NUL).
- * The form is : {code}authzId<NUL>authnId<NUL>password<NUL>{code}
- * authzId is optional, and in fact we don't care about it here as we'll
- * set the authzId to match the authnId (that is, there is no concept of
- * a user being authorized to act on behalf of another).
- *
- * @param bytes encoded credentials string sent by the client
- * @return map containing the username/password pairs in the form an IAuthenticator
- * would expect
- * @throws javax.security.sasl.SaslException
- */
-bytes plain_sasl_challenge::evaluate_response(bytes_view client_response) {
-    sstring username, password;
-
-    auto b = client_response.crbegin();
-    auto e = client_response.crend();
-    auto i = b;
-
-    while (i != e) {
-        if (*i == 0) {
-            sstring tmp(i.base(), b.base());
-            if (password.empty()) {
-                password = std::move(tmp);
-            } else if (username.empty()) {
-                username = std::move(tmp);
-            }
-            b = ++i;
-            continue;
-        }
-        ++i;
-    }
-
-    if (username.empty()) {
-        throw exceptions::authentication_exception("Authentication ID must not be null");
-    }
-    if (password.empty()) {
-        throw exceptions::authentication_exception("Password must not be null");
-    }
-
-    _username = std::move(username);
-    _password = std::move(password);
-    return {};
-}
-
-bool plain_sasl_challenge::is_complete() const {
-    return _username && _password;
-}
-
-future<authenticated_user> plain_sasl_challenge::get_authenticated_user() const {
-    return _when_complete(*_username, *_password);
-}
-
-}

auth/sasl_challenge.hh

@@ -1,89 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/*
- * Copyright (C) 2019 ScyllaDB
- *
- * Modified by ScyllaDB
- */
-
-/*
- * This file is part of Scylla.
- *
- * Scylla is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scylla is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-#include <functional>
-#include <optional>
-#include <string_view>
-
-#include <seastar/core/future.hh>
-#include <seastar/core/sstring.hh>
-
-#include "auth/authenticated_user.hh"
-#include "bytes.hh"
-#include "seastarx.hh"
-
-namespace auth {
-
-///
-/// A stateful SASL challenge which supports many authentication schemes (depending on the implementation).
-///
-class sasl_challenge {
-public:
-    virtual ~sasl_challenge() = default;
-
-    virtual bytes evaluate_response(bytes_view client_response) = 0;
-
-    virtual bool is_complete() const = 0;
-
-    virtual future<authenticated_user> get_authenticated_user() const = 0;
-};
-
-class plain_sasl_challenge : public sasl_challenge {
-public:
-    using completion_callback = std::function<future<authenticated_user>(std::string_view, std::string_view)>;
-
-    explicit plain_sasl_challenge(completion_callback f) : _when_complete(std::move(f)) {
-    }
-
-    virtual bytes evaluate_response(bytes_view) override;
-
-    virtual bool is_complete() const override;
-
-    virtual future<authenticated_user> get_authenticated_user() const override;
-
-private:
-    std::optional<sstring> _username, _password;
-    completion_callback _when_complete;
-};
-
-}

auth/service.cc

@@ -36,12 +36,12 @@
 #include "auth/standard_role_manager.hh"
 #include "cql3/query_processor.hh"
 #include "cql3/untyped_result_set.hh"
+#include "db/config.hh"
 #include "db/consistency_level_type.hh"
 #include "exceptions/exceptions.hh"
 #include "log.hh"
-#include "service/migration_manager.hh"
+#include "service/migration_listener.hh"
 #include "utils/class_registrator.hh"
-#include "database.hh"
 
 namespace auth {
 
@@ -77,23 +77,17 @@ private:
     void on_update_view(const sstring& ks_name, const sstring& view_name, bool columns_changed) override {}
 
     void on_drop_keyspace(const sstring& ks_name) override {
-        // Do it in the background.
-        (void)_authorizer.revoke_all(
+        _authorizer.revoke_all(
                 auth::make_data_resource(ks_name)).handle_exception_type([](const unsupported_authorization_operation&) {
             // Nothing.
-        }).handle_exception([] (std::exception_ptr e) {
-            log.error("Unexpected exception while revoking all permissions on dropped keyspace: {}", e);
         });
     }
 
     void on_drop_column_family(const sstring& ks_name, const sstring& cf_name) override {
-        // Do it in the background.
-        (void)_authorizer.revoke_all(
+        _authorizer.revoke_all(
                 auth::make_data_resource(
                         ks_name, cf_name)).handle_exception_type([](const unsupported_authorization_operation&) {
             // Nothing.
-        }).handle_exception([] (std::exception_ptr e) {
-            log.error("Unexpected exception while revoking all permissions on dropped table: {}", e);
         });
     }
 
@@ -103,7 +97,7 @@ private:
     void on_drop_view(const sstring& ks_name, const sstring& view_name) override {}
 };
 
-static future<> validate_role_exists(const service& ser, std::string_view role_name) {
+static future<> validate_role_exists(const service& ser, stdx::string_view role_name) {
     return ser.underlying_role_manager().exists(role_name).then([role_name](bool exists) {
         if (!exists) {
             throw nonexistant_role(role_name);
@@ -111,17 +105,30 @@ static future<> validate_role_exists(const service& ser, std::string_view role_n
     });
 }
 
+service_config service_config::from_db_config(const db::config& dc) {
+    const qualified_name qualified_authorizer_name(meta::AUTH_PACKAGE_NAME, dc.authorizer());
+    const qualified_name qualified_authenticator_name(meta::AUTH_PACKAGE_NAME, dc.authenticator());
+    const qualified_name qualified_role_manager_name(meta::AUTH_PACKAGE_NAME, dc.role_manager());
+
+    service_config c;
+    c.authorizer_java_name = qualified_authorizer_name;
+    c.authenticator_java_name = qualified_authenticator_name;
+    c.role_manager_java_name = qualified_role_manager_name;
+
+    return c;
+}
+
 service::service(
         permissions_cache_config c,
         cql3::query_processor& qp,
-        ::service::migration_notifier& mn,
+        ::service::migration_manager& mm,
         std::unique_ptr<authorizer> z,
         std::unique_ptr<authenticator> a,
         std::unique_ptr<role_manager> r)
             : _permissions_cache_config(std::move(c))
             , _permissions_cache(nullptr)
             , _qp(qp)
-            , _mnotifier(mn)
+            , _migration_manager(mm)
             , _authorizer(std::move(z))
             , _authenticator(std::move(a))
             , _role_manager(std::move(r))
@@ -132,7 +139,8 @@ service::service(
     if ((_authenticator->qualified_java_name() == password_authenticator_name())
             && (_role_manager->qualified_java_name() != standard_role_manager_name())) {
         throw incompatible_module_combination(
-                format("The {} authenticator must be loaded alongside the {} role-manager.",
+                sprint(
+                        "The %s authenticator must be loaded alongside the %s role-manager.",
                         password_authenticator_name(),
                         standard_role_manager_name()));
     }
@@ -141,20 +149,19 @@ service::service(
 service::service(
         permissions_cache_config c,
         cql3::query_processor& qp,
-        ::service::migration_notifier& mn,
         ::service::migration_manager& mm,
         const service_config& sc)
             : service(
                       std::move(c),
                       qp,
-                      mn,
+                      mm,
                       create_object<authorizer>(sc.authorizer_java_name, qp, mm),
                       create_object<authenticator>(sc.authenticator_java_name, qp, mm),
                       create_object<role_manager>(sc.role_manager_java_name, qp, mm)) {
 }
 
-future<> service::create_keyspace_if_missing(::service::migration_manager& mm) const {
-    auto& db = _qp.db();
+future<> service::create_keyspace_if_missing() const {
+    auto& db = _qp.db().local();
 
     if (!db.has_keyspace(meta::AUTH_KS)) {
         std::map<sstring, sstring> opts{{"replication_factor", "1"}};
@@ -167,24 +174,22 @@ future<> service::create_keyspace_if_missing(::service::migration_manager& mm) c
 
         // We use min_timestamp so that default keyspace metadata will loose with any manual adjustments.
         // See issue #2129.
-        return mm.announce_new_keyspace(ksm, api::min_timestamp, false);
+        return _migration_manager.announce_new_keyspace(ksm, api::min_timestamp, false);
     }
 
     return make_ready_future<>();
 }
 
-future<> service::start(::service::migration_manager& mm) {
-    return once_among_shards([this, &mm] {
-        return create_keyspace_if_missing(mm);
+future<> service::start() {
+    return once_among_shards([this] {
+        return create_keyspace_if_missing();
     }).then([this] {
-        return _role_manager->start().then([this] {
-            return when_all_succeed(_authorizer->start(), _authenticator->start());
-        });
+        return when_all_succeed(_role_manager->start(), _authorizer->start(), _authenticator->start());
     }).then([this] {
         _permissions_cache = std::make_unique<permissions_cache>(_permissions_cache_config, *this, log);
     }).then([this] {
         return once_among_shards([this] {
-            _mnotifier.register_listener(_migration_listener.get());
+            _migration_manager.register_listener(_migration_listener.get());
             return make_ready_future<>();
         });
     });
@@ -193,34 +198,33 @@ future<> service::start(::service::migration_manager& mm) {
 future<> service::stop() {
     // Only one of the shards has the listener registered, but let's try to
     // unregister on each one just to make sure.
-    return _mnotifier.unregister_listener(_migration_listener.get()).then([this] {
-        if (_permissions_cache) {
-            return _permissions_cache->stop();
-        }
-        return make_ready_future<>();
-    }).then([this] {
+    _migration_manager.unregister_listener(_migration_listener.get());
+
+    return _permissions_cache->stop().then([this] {
         return when_all_succeed(_role_manager->stop(), _authorizer->stop(), _authenticator->stop());
     });
 }
 
 future<bool> service::has_existing_legacy_users() const {
-    if (!_qp.db().has_schema(meta::AUTH_KS, meta::USERS_CF)) {
+    if (!_qp.db().local().has_schema(meta::AUTH_KS, meta::USERS_CF)) {
         return make_ready_future<bool>(false);
     }
 
-    static const sstring default_user_query = format("SELECT * FROM {}.{} WHERE {} = ?",
+    static const sstring default_user_query = sprint(
+            "SELECT * FROM %s.%s WHERE %s = ?",
             meta::AUTH_KS,
             meta::USERS_CF,
             meta::user_name_col_name);
 
-    static const sstring all_users_query = format("SELECT * FROM {}.{} LIMIT 1",
+    static const sstring all_users_query = sprint(
+            "SELECT * FROM %s.%s LIMIT 1",
             meta::AUTH_KS,
             meta::USERS_CF);
 
     // This logic is borrowed directly from Apache Cassandra. By first checking for the presence of the default user, we
     // can potentially avoid doing a range query with a high consistency level.
 
-    return _qp.execute_internal(
+    return _qp.process(
             default_user_query,
             db::consistency_level::ONE,
             infinite_timeout_config,
@@ -230,7 +234,7 @@ future<bool> service::has_existing_legacy_users() const {
             return make_ready_future<bool>(true);
         }
 
-        return _qp.execute_internal(
+        return _qp.process(
                 default_user_query,
                 db::consistency_level::QUORUM,
                 infinite_timeout_config,
@@ -240,7 +244,7 @@ future<bool> service::has_existing_legacy_users() const {
                 return make_ready_future<bool>(true);
             }
 
-            return _qp.execute_internal(
+            return _qp.process(
                     all_users_query,
                     db::consistency_level::QUORUM,
                     infinite_timeout_config).then([](auto results) {
@@ -256,7 +260,7 @@ service::get_uncached_permissions(const role_or_anonymous& maybe_role, const res
         return _authorizer->authorize(maybe_role, r);
     }
 
-    const std::string_view role_name = *maybe_role.name;
+    const stdx::string_view role_name = *maybe_role.name;
 
     return has_superuser(role_name).then([this, role_name, &r](bool superuser) {
         if (superuser) {
@@ -270,7 +274,7 @@ service::get_uncached_permissions(const role_or_anonymous& maybe_role, const res
         return do_with(permission_set(), [this, role_name, &r](auto& all_perms) {
             return get_roles(role_name).then([this, &r, &all_perms](role_set all_roles) {
                 return do_with(std::move(all_roles), [this, &r, &all_perms](const auto& all_roles) {
-                    return parallel_for_each(all_roles, [this, &r, &all_perms](std::string_view role_name) {
+                    return parallel_for_each(all_roles, [this, &r, &all_perms](stdx::string_view role_name) {
                         return _authorizer->authorize(role_name, r).then([&all_perms](permission_set perms) {
                             all_perms = permission_set::from_mask(all_perms.mask() | perms.mask());
                         });
@@ -287,7 +291,7 @@ future<permission_set> service::get_permissions(const role_or_anonymous& maybe_r
     return _permissions_cache->get(maybe_role, r);
 }
 
-future<bool> service::has_superuser(std::string_view role_name) const {
+future<bool> service::has_superuser(stdx::string_view role_name) const {
     return this->get_roles(std::move(role_name)).then([this](role_set roles) {
         return do_with(std::move(roles), [this](const role_set& roles) {
             return do_with(false, roles.begin(), [this, &roles](bool& any_super, auto& iter) {
@@ -305,7 +309,7 @@ future<bool> service::has_superuser(std::string_view role_name) const {
     });
 }
 
-future<role_set> service::get_roles(std::string_view role_name) const {
+future<role_set> service::get_roles(stdx::string_view role_name) const {
     //
     // We may wish to cache this information in the future (as Apache Cassandra does).
     //
@@ -316,7 +320,7 @@ future<role_set> service::get_roles(std::string_view role_name) const {
 future<bool> service::exists(const resource& r) const {
     switch (r.kind()) {
         case resource_kind::data: {
-            const auto& db = _qp.db();
+            const auto& db = _qp.db().local();
 
             data_resource_view v(r);
             const auto keyspace = v.keyspace();
@@ -411,7 +415,7 @@ static void validate_authentication_options_are_supported(
 
 future<> create_role(
         const service& ser,
-        std::string_view name,
+        stdx::string_view name,
         const role_config& config,
         const authentication_options& options) {
     return ser.underlying_role_manager().create(name, config).then([&ser, name, &options] {
@@ -435,7 +439,7 @@ future<> create_role(
 
 future<> alter_role(
         const service& ser,
-        std::string_view name,
+        stdx::string_view name,
         const role_config_update& config_update,
         const authentication_options& options) {
     return ser.underlying_role_manager().alter(name, config_update).then([&ser, name, &options] {
@@ -452,7 +456,7 @@ future<> alter_role(
     });
 }
 
-future<> drop_role(const service& ser, std::string_view name) {
+future<> drop_role(const service& ser, stdx::string_view name) {
     return do_with(make_role_resource(name), [&ser, name](const resource& r) {
         auto& a = ser.underlying_authorizer();
 
@@ -468,14 +472,14 @@ future<> drop_role(const service& ser, std::string_view name) {
     });
 }
 
-future<bool> has_role(const service& ser, std::string_view grantee, std::string_view name) {
+future<bool> has_role(const service& ser, stdx::string_view grantee, stdx::string_view name) {
     return when_all_succeed(
             validate_role_exists(ser, name),
             ser.get_roles(grantee)).then([name](role_set all_roles) {
         return make_ready_future<bool>(all_roles.count(sstring(name)) != 0);
     });
 }
-future<bool> has_role(const service& ser, const authenticated_user& u, std::string_view name) {
+future<bool> has_role(const service& ser, const authenticated_user& u, stdx::string_view name) {
     if (is_anonymous(u)) {
         return make_ready_future<bool>(false);
     }
@@ -485,7 +489,7 @@ future<bool> has_role(const service& ser, const authenticated_user& u, std::stri
 
 future<> grant_permissions(
         const service& ser,
-        std::string_view role_name,
+        stdx::string_view role_name,
         permission_set perms,
         const resource& r) {
     return validate_role_exists(ser, role_name).then([&ser, role_name, perms, &r] {
@@ -493,7 +497,7 @@ future<> grant_permissions(
     });
 }
 
-future<> grant_applicable_permissions(const service& ser, std::string_view role_name, const resource& r) {
+future<> grant_applicable_permissions(const service& ser, stdx::string_view role_name, const resource& r) {
     return grant_permissions(ser, role_name, r.applicable_permissions(), r);
 }
 future<> grant_applicable_permissions(const service& ser, const authenticated_user& u, const resource& r) {
@@ -506,7 +510,7 @@ future<> grant_applicable_permissions(const service& ser, const authenticated_us
 
 future<> revoke_permissions(
         const service& ser,
-        std::string_view role_name,
+        stdx::string_view role_name,
         permission_set perms,
         const resource& r) {
     return validate_role_exists(ser, role_name).then([&ser, role_name, perms, &r] {
@@ -517,7 +521,7 @@ future<> revoke_permissions(
 future<std::vector<permission_details>> list_filtered_permissions(
         const service& ser,
         permission_set perms,
-        std::optional<std::string_view> role_name,
+        std::optional<stdx::string_view> role_name,
         const std::optional<std::pair<resource, recursive_permissions>>& resource_filter) {
     return ser.underlying_authorizer().list_all().then([&ser, perms, role_name, &resource_filter](
             std::vector<permission_details> all_details) {

auth/service.hh

@@ -21,14 +21,13 @@
 
 #pragma once
 
-#include <string_view>
+#include <experimental/string_view>
 #include <memory>
 #include <optional>
 
 #include <seastar/core/future.hh>
 #include <seastar/core/sstring.hh>
 #include <seastar/util/bool_class.hh>
-#include <seastar/core/sharded.hh>
 
 #include "auth/authenticator.hh"
 #include "auth/authorizer.hh"
@@ -36,14 +35,18 @@
 #include "auth/permissions_cache.hh"
 #include "auth/role_manager.hh"
 #include "seastarx.hh"
+#include "stdx.hh"
 
 namespace cql3 {
 class query_processor;
 }
 
+namespace db {
+class config;
+}
+
 namespace service {
 class migration_manager;
-class migration_notifier;
 class migration_listener;
 }
 
@@ -52,6 +55,8 @@ namespace auth {
 class role_or_anonymous;
 
 struct service_config final {
+    static service_config from_db_config(const db::config&);
+
     sstring authorizer_java_name;
     sstring authenticator_java_name;
     sstring role_manager_java_name;
@@ -78,15 +83,13 @@ public:
 ///
 /// All state associated with access-control is stored externally to any particular instance of this class.
 ///
-/// peering_sharded_service inheritance is needed to be able to access shard local authentication service
-/// given an object from another shard. Used for bouncing lwt requests to correct shard.
-class service final : public seastar::peering_sharded_service<service> {
+class service final {
     permissions_cache_config _permissions_cache_config;
     std::unique_ptr<permissions_cache> _permissions_cache;
 
     cql3::query_processor& _qp;
 
-    ::service::migration_notifier& _mnotifier;
+    ::service::migration_manager& _migration_manager;
 
     std::unique_ptr<authorizer> _authorizer;
 
@@ -101,7 +104,7 @@ public:
     service(
             permissions_cache_config,
             cql3::query_processor&,
-            ::service::migration_notifier&,
+            ::service::migration_manager&,
             std::unique_ptr<authorizer>,
             std::unique_ptr<authenticator>,
             std::unique_ptr<role_manager>);
@@ -114,11 +117,10 @@ public:
     service(
             permissions_cache_config,
             cql3::query_processor&,
-            ::service::migration_notifier&,
             ::service::migration_manager&,
             const service_config&);
 
-    future<> start(::service::migration_manager&);
+    future<> start();
 
     future<> stop();
 
@@ -139,13 +141,13 @@ public:
     ///
     /// \returns an exceptional future with \ref nonexistant_role if the role does not exist.
     ///
-    future<bool> has_superuser(std::string_view role_name) const;
+    future<bool> has_superuser(stdx::string_view role_name) const;
 
     ///
     /// Return the set of all roles granted to the given role, including itself and roles granted through other roles.
     ///
     /// \returns an exceptional future with \ref nonexistent_role if the role does not exist.
-    future<role_set> get_roles(std::string_view role_name) const;
+    future<role_set> get_roles(stdx::string_view role_name) const;
 
     future<bool> exists(const resource&) const;
 
@@ -164,7 +166,7 @@ public:
 private:
     future<bool> has_existing_legacy_users() const;
 
-    future<> create_keyspace_if_missing(::service::migration_manager& mm) const;
+    future<> create_keyspace_if_missing() const;
 };
 
 future<bool> has_superuser(const service&, const authenticated_user&);
@@ -195,7 +197,7 @@ bool is_protected(const service&, const resource&) noexcept;
 ///
 future<> create_role(
         const service&,
-        std::string_view name,
+        stdx::string_view name,
         const role_config&,
         const authentication_options&);
 
@@ -208,7 +210,7 @@ future<> create_role(
 ///
 future<> alter_role(
         const service&,
-        std::string_view name,
+        stdx::string_view name,
         const role_config_update&,
         const authentication_options&);
 
@@ -217,20 +219,20 @@ future<> alter_role(
 ///
 /// \returns an exceptional future with \ref nonexistant_role if the named role does not exist.
 ///
-future<> drop_role(const service&, std::string_view name);
+future<> drop_role(const service&, stdx::string_view name);
 
 ///
 /// Check if `grantee` has been granted the named role.
 ///
 /// \returns an exceptional future with \ref nonexistent_role if `grantee` or `name` do not exist.
 ///
-future<bool> has_role(const service&, std::string_view grantee, std::string_view name);
+future<bool> has_role(const service&, stdx::string_view grantee, stdx::string_view name);
 ///
 /// Check if the authenticated user has been granted the named role.
 ///
 /// \returns an exceptional future with \ref nonexistent_role if the user or `name` do not exist.
 ///
-future<bool> has_role(const service&, const authenticated_user&, std::string_view name);
+future<bool> has_role(const service&, const authenticated_user&, stdx::string_view name);
 
 ///
 /// \returns an exceptional future with \ref nonexistent_role if the named role does not exist.
@@ -240,7 +242,7 @@ future<bool> has_role(const service&, const authenticated_user&, std::string_vie
 ///
 future<> grant_permissions(
         const service&,
-        std::string_view role_name,
+        stdx::string_view role_name,
         permission_set,
         const resource&);
 
@@ -252,7 +254,7 @@ future<> grant_permissions(
 /// \returns an exceptional future with \ref unsupported_authorization_operation if granting permissions is not
 /// supported.
 ///
-future<> grant_applicable_permissions(const service&, std::string_view role_name, const resource&);
+future<> grant_applicable_permissions(const service&, stdx::string_view role_name, const resource&);
 future<> grant_applicable_permissions(const service&, const authenticated_user&, const resource&);
 
 ///
@@ -263,7 +265,7 @@ future<> grant_applicable_permissions(const service&, const authenticated_user&,
 ///
 future<> revoke_permissions(
         const service&,
-        std::string_view role_name,
+        stdx::string_view role_name,
         permission_set,
         const resource&);
 
@@ -288,7 +290,7 @@ using recursive_permissions = bool_class<struct recursive_permissions_tag>;
 future<std::vector<permission_details>> list_filtered_permissions(
         const service&,
         permission_set,
-        std::optional<std::string_view> role_name,
+        std::optional<stdx::string_view> role_name,
         const std::optional<std::pair<resource, recursive_permissions>>& resource_filter);
 
 }

auth/standard_role_manager.cc

@@ -21,7 +21,7 @@
 
 #include "auth/standard_role_manager.hh"
 
-#include <optional>
+#include <experimental/optional>
 #include <unordered_set>
 #include <vector>
 
@@ -35,12 +35,10 @@
 #include "auth/common.hh"
 #include "auth/roles-metadata.hh"
 #include "cql3/query_processor.hh"
-#include "cql3/untyped_result_set.hh"
 #include "db/consistency_level_type.hh"
 #include "exceptions/exceptions.hh"
 #include "log.hh"
 #include "utils/class_registrator.hh"
-#include "database.hh"
 
 namespace auth {
 
@@ -48,9 +46,9 @@ namespace meta {
 
 namespace role_members_table {
 
-constexpr std::string_view name{"role_members" , 12};
+constexpr stdx::string_view name{"role_members" , 12};
 
-static std::string_view qualified_name() noexcept {
+static stdx::string_view qualified_name() noexcept {
     static const sstring instance = AUTH_KS + "." + sstring(name);
     return instance;
 }
@@ -74,7 +72,7 @@ struct record final {
     role_set member_of;
 };
 
-static db::consistency_level consistency_for_role(std::string_view role_name) noexcept {
+static db::consistency_level consistency_for_role(stdx::string_view role_name) noexcept {
     if (role_name == meta::DEFAULT_SUPERUSER_NAME) {
         return db::consistency_level::QUORUM;
     }
@@ -82,36 +80,37 @@ static db::consistency_level consistency_for_role(std::string_view role_name) no
     return db::consistency_level::LOCAL_ONE;
 }
 
-static future<std::optional<record>> find_record(cql3::query_processor& qp, std::string_view role_name) {
-    static const sstring query = format("SELECT * FROM {} WHERE {} = ?",
+static future<stdx::optional<record>> find_record(cql3::query_processor& qp, stdx::string_view role_name) {
+    static const sstring query = sprint(
+            "SELECT * FROM %s WHERE %s = ?",
             meta::roles_table::qualified_name(),
             meta::roles_table::role_col_name);
 
-    return qp.execute_internal(
+    return qp.process(
             query,
             consistency_for_role(role_name),
             internal_distributed_timeout_config(),
             {sstring(role_name)},
             true).then([](::shared_ptr<cql3::untyped_result_set> results) {
         if (results->empty()) {
-            return std::optional<record>();
+            return stdx::optional<record>();
         }
 
         const cql3::untyped_result_set_row& row = results->one();
 
-        return std::make_optional(
+        return stdx::make_optional(
                 record{
                         row.get_as<sstring>(sstring(meta::roles_table::role_col_name)),
-                        row.get_or<bool>("is_superuser", false),
-                        row.get_or<bool>("can_login", false),
+                        row.get_as<bool>("is_superuser"),
+                        row.get_as<bool>("can_login"),
                         (row.has("member_of")
                                  ? row.get_set<sstring>("member_of")
                                  : role_set())});
     });
 }
 
-static future<record> require_record(cql3::query_processor& qp, std::string_view role_name) {
-    return find_record(qp, role_name).then([role_name](std::optional<record> mr) {
+static future<record> require_record(cql3::query_processor& qp, stdx::string_view role_name) {
+    return find_record(qp, role_name).then([role_name](stdx::optional<record> mr) {
         if (!mr) {
             throw nonexistant_role(role_name);
         }
@@ -124,12 +123,12 @@ static bool has_can_login(const cql3::untyped_result_set_row& row) {
     return row.has("can_login") && !(boolean_type->deserialize(row.get_blob("can_login")).is_null());
 }
 
-std::string_view standard_role_manager_name() noexcept {
+stdx::string_view standard_role_manager_name() noexcept {
     static const sstring instance = meta::AUTH_PACKAGE_NAME + "CassandraRoleManager";
     return instance;
 }
 
-std::string_view standard_role_manager::qualified_java_name() const noexcept {
+stdx::string_view standard_role_manager::qualified_java_name() const noexcept {
     return standard_role_manager_name();
 }
 
@@ -167,11 +166,12 @@ future<> standard_role_manager::create_metadata_tables_if_missing() const {
 future<> standard_role_manager::create_default_role_if_missing() const {
     return default_role_row_satisfies(_qp, &has_can_login).then([this](bool exists) {
         if (!exists) {
-            static const sstring query = format("INSERT INTO {} ({}, is_superuser, can_login) VALUES (?, true, true)",
+            static const sstring query = sprint(
+                    "INSERT INTO %s (%s, is_superuser, can_login) VALUES (?, true, true)",
                     meta::roles_table::qualified_name(),
                     meta::roles_table::role_col_name);
 
-            return _qp.execute_internal(
+            return _qp.process(
                     query,
                     db::consistency_level::QUORUM,
                     internal_distributed_timeout_config(),
@@ -191,20 +191,20 @@ future<> standard_role_manager::create_default_role_if_missing() const {
 static const sstring legacy_table_name{"users"};
 
 bool standard_role_manager::legacy_metadata_exists() const {
-    return _qp.db().has_schema(meta::AUTH_KS, legacy_table_name);
+    return _qp.db().local().has_schema(meta::AUTH_KS, legacy_table_name);
 }
 
 future<> standard_role_manager::migrate_legacy_metadata() const {
     log.info("Starting migration of legacy user metadata.");
-    static const sstring query = format("SELECT * FROM {}.{}", meta::AUTH_KS, legacy_table_name);
+    static const sstring query = sprint("SELECT * FROM %s.%s", meta::AUTH_KS, legacy_table_name);
 
-    return _qp.execute_internal(
+    return _qp.process(
             query,
             db::consistency_level::QUORUM,
             internal_distributed_timeout_config()).then([this](::shared_ptr<cql3::untyped_result_set> results) {
         return do_for_each(*results, [this](const cql3::untyped_result_set_row& row) {
             role_config config;
-            config.is_superuser = row.get_or<bool>("super", false);
+            config.is_superuser = row.get_as<bool>("super");
             config.can_login = true;
 
             return do_with(
@@ -227,7 +227,7 @@ future<> standard_role_manager::start() {
         return this->create_metadata_tables_if_missing().then([this] {
             _stopped = auth::do_after_system_ready(_as, [this] {
                 return seastar::async([this] {
-                    wait_for_schema_agreement(_migration_manager, _qp.db(), _as).get0();
+                    wait_for_schema_agreement(_migration_manager, _qp.db().local()).get0();
 
                     if (any_nondefault_role_row_satisfies(_qp, &has_can_login).get0()) {
                         if (this->legacy_metadata_exists()) {
@@ -251,15 +251,16 @@ future<> standard_role_manager::start() {
 
 future<> standard_role_manager::stop() {
     _as.request_abort();
-    return _stopped.handle_exception_type([] (const sleep_aborted&) { }).handle_exception_type([](const abort_requested_exception&) {});;
+    return _stopped.handle_exception_type([] (const sleep_aborted&) { });
 }
 
-future<> standard_role_manager::create_or_replace(std::string_view role_name, const role_config& c) const {
-    static const sstring query = format("INSERT INTO {} ({}, is_superuser, can_login) VALUES (?, ?, ?)",
+future<> standard_role_manager::create_or_replace(stdx::string_view role_name, const role_config& c) const {
+    static const sstring query = sprint(
+            "INSERT INTO %s (%s, is_superuser, can_login) VALUES (?, ?, ?)",
             meta::roles_table::qualified_name(),
             meta::roles_table::role_col_name);
 
-    return _qp.execute_internal(
+    return _qp.process(
             query,
             consistency_for_role(role_name),
             internal_distributed_timeout_config(),
@@ -268,7 +269,7 @@ future<> standard_role_manager::create_or_replace(std::string_view role_name, co
 }
 
 future<>
-standard_role_manager::create(std::string_view role_name, const role_config& c) const {
+standard_role_manager::create(stdx::string_view role_name, const role_config& c) const {
     return this->exists(role_name).then([this, role_name, &c](bool role_exists) {
         if (role_exists) {
             throw role_already_exists(role_name);
@@ -279,7 +280,7 @@ standard_role_manager::create(std::string_view role_name, const role_config& c)
 }
 
 future<>
-standard_role_manager::alter(std::string_view role_name, const role_config_update& u) const {
+standard_role_manager::alter(stdx::string_view role_name, const role_config_update& u) const {
     static const auto build_column_assignments = [](const role_config_update& u) -> sstring {
         std::vector<sstring> assignments;
 
@@ -299,8 +300,9 @@ standard_role_manager::alter(std::string_view role_name, const role_config_updat
             return make_ready_future<>();
         }
 
-        return _qp.execute_internal(
-                format("UPDATE {} SET {} WHERE {} = ?",
+        return _qp.process(
+                sprint(
+                        "UPDATE %s SET %s WHERE %s = ?",
                         meta::roles_table::qualified_name(),
                         build_column_assignments(u),
                         meta::roles_table::role_col_name),
@@ -310,7 +312,7 @@ standard_role_manager::alter(std::string_view role_name, const role_config_updat
     });
 }
 
-future<> standard_role_manager::drop(std::string_view role_name) const {
+future<> standard_role_manager::drop(stdx::string_view role_name) const {
     return this->exists(role_name).then([this, role_name](bool role_exists) {
         if (!role_exists) {
             throw nonexistant_role(role_name);
@@ -318,10 +320,11 @@ future<> standard_role_manager::drop(std::string_view role_name) const {
 
         // First, revoke this role from all roles that are members of it.
         const auto revoke_from_members = [this, role_name] {
-            static const sstring query = format("SELECT member FROM {} WHERE role = ?",
+            static const sstring query = sprint(
+                    "SELECT member FROM %s WHERE role = ?",
                     meta::role_members_table::qualified_name());
 
-            return _qp.execute_internal(
+            return _qp.process(
                     query,
                     consistency_for_role(role_name),
                     internal_distributed_timeout_config(),
@@ -356,11 +359,12 @@ future<> standard_role_manager::drop(std::string_view role_name) const {
 
         // Finally, delete the role itself.
         auto delete_role = [this, role_name] {
-            static const sstring query = format("DELETE FROM {} WHERE {} = ?",
+            static const sstring query = sprint(
+                    "DELETE FROM %s WHERE %s = ?",
                     meta::roles_table::qualified_name(),
                     meta::roles_table::role_col_name);
 
-            return _qp.execute_internal(
+            return _qp.process(
                     query,
                     consistency_for_role(role_name),
                     internal_distributed_timeout_config(),
@@ -375,19 +379,19 @@ future<> standard_role_manager::drop(std::string_view role_name) const {
 
 future<>
 standard_role_manager::modify_membership(
-        std::string_view grantee_name,
-        std::string_view role_name,
+        stdx::string_view grantee_name,
+        stdx::string_view role_name,
         membership_change ch) const {
 
 
     const auto modify_roles = [this, role_name, grantee_name, ch] {
-        const auto query = format(
-                "UPDATE {} SET member_of = member_of {} ? WHERE {} = ?",
+        const auto query = sprint(
+                "UPDATE %s SET member_of = member_of %s ? WHERE %s = ?",
                 meta::roles_table::qualified_name(),
                 (ch == membership_change::add ? '+' : '-'),
                 meta::roles_table::role_col_name);
 
-        return _qp.execute_internal(
+        return _qp.process(
                 query,
                 consistency_for_role(grantee_name),
                 internal_distributed_timeout_config(),
@@ -397,16 +401,18 @@ standard_role_manager::modify_membership(
     const auto modify_role_members = [this, role_name, grantee_name, ch] {
         switch (ch) {
             case membership_change::add:
-                return _qp.execute_internal(
-                        format("INSERT INTO {} (role, member) VALUES (?, ?)",
+                return _qp.process(
+                        sprint(
+                                "INSERT INTO %s (role, member) VALUES (?, ?)",
                                 meta::role_members_table::qualified_name()),
                         consistency_for_role(role_name),
                         internal_distributed_timeout_config(),
                         {sstring(role_name), sstring(grantee_name)}).discard_result();
 
             case membership_change::remove:
-                return _qp.execute_internal(
-                        format("DELETE FROM {} WHERE role = ? AND member = ?",
+                return _qp.process(
+                        sprint(
+                                "DELETE FROM %s WHERE role = ? AND member = ?",
                                 meta::role_members_table::qualified_name()),
                         consistency_for_role(role_name),
                         internal_distributed_timeout_config(),
@@ -420,7 +426,7 @@ standard_role_manager::modify_membership(
 }
 
 future<>
-standard_role_manager::grant(std::string_view grantee_name, std::string_view role_name) const {
+standard_role_manager::grant(stdx::string_view grantee_name, stdx::string_view role_name) const {
     const auto check_redundant = [this, role_name, grantee_name] {
         return this->query_granted(
                 grantee_name,
@@ -451,7 +457,7 @@ standard_role_manager::grant(std::string_view grantee_name, std::string_view rol
 }
 
 future<>
-standard_role_manager::revoke(std::string_view revokee_name, std::string_view role_name) const {
+standard_role_manager::revoke(stdx::string_view revokee_name, stdx::string_view role_name) const {
     return this->exists(role_name).then([this, revokee_name, role_name](bool role_exists) {
         if (!role_exists) {
             throw nonexistant_role(sstring(role_name));
@@ -473,7 +479,7 @@ standard_role_manager::revoke(std::string_view revokee_name, std::string_view ro
 
 static future<> collect_roles(
         cql3::query_processor& qp,
-        std::string_view grantee_name,
+        stdx::string_view grantee_name,
         bool recurse,
         role_set& roles) {
     return require_record(qp, grantee_name).then([&qp, &roles, recurse](record r) {
@@ -491,7 +497,7 @@ static future<> collect_roles(
     });
 }
 
-future<role_set> standard_role_manager::query_granted(std::string_view grantee_name, recursive_role_query m) const {
+future<role_set> standard_role_manager::query_granted(stdx::string_view grantee_name, recursive_role_query m) const {
     const bool recurse = (m == recursive_role_query::yes);
 
     return do_with(
@@ -502,14 +508,15 @@ future<role_set> standard_role_manager::query_granted(std::string_view grantee_n
 }
 
 future<role_set> standard_role_manager::query_all() const {
-    static const sstring query = format("SELECT {} FROM {}",
+    static const sstring query = sprint(
+            "SELECT %s FROM %s",
             meta::roles_table::role_col_name,
             meta::roles_table::qualified_name());
 
     // To avoid many copies of a view.
     static const auto role_col_name_string = sstring(meta::roles_table::role_col_name);
 
-    return _qp.execute_internal(
+    return _qp.process(
             query,
             db::consistency_level::QUORUM,
             internal_distributed_timeout_config()).then([](::shared_ptr<cql3::untyped_result_set> results) {
@@ -527,19 +534,19 @@ future<role_set> standard_role_manager::query_all() const {
     });
 }
 
-future<bool> standard_role_manager::exists(std::string_view role_name) const  {
-    return find_record(_qp, role_name).then([](std::optional<record> mr) {
+future<bool> standard_role_manager::exists(stdx::string_view role_name) const  {
+    return find_record(_qp, role_name).then([](stdx::optional<record> mr) {
         return static_cast<bool>(mr);
     });
 }
 
-future<bool> standard_role_manager::is_superuser(std::string_view role_name) const {
+future<bool> standard_role_manager::is_superuser(stdx::string_view role_name) const {
     return require_record(_qp, role_name).then([](record r) {
         return r.is_superuser;
     });
 }
 
-future<bool> standard_role_manager::can_login(std::string_view role_name) const {
+future<bool> standard_role_manager::can_login(stdx::string_view role_name) const {
     return require_record(_qp, role_name).then([](record r) {
         return r.can_login;
     });

auth/standard_role_manager.hh

@@ -23,13 +23,14 @@
 
 #include "auth/role_manager.hh"
 
-#include <string_view>
+#include <experimental/string_view>
 #include <unordered_set>
 
 #include <seastar/core/abort_source.hh>
 #include <seastar/core/future.hh>
 #include <seastar/core/sstring.hh>
 
+#include "stdx.hh"
 #include "seastarx.hh"
 
 namespace cql3 {
@@ -42,7 +43,7 @@ class migration_manager;
 
 namespace auth {
 
-std::string_view standard_role_manager_name() noexcept;
+stdx::string_view standard_role_manager_name() noexcept;
 
 class standard_role_manager final : public role_manager {
     cql3::query_processor& _qp;
@@ -57,7 +58,7 @@ public:
             , _stopped(make_ready_future<>()) {
     }
 
-    virtual std::string_view qualified_java_name() const noexcept override;
+    virtual stdx::string_view qualified_java_name() const noexcept override;
 
     virtual const resource_set& protected_resources() const override;
 
@@ -65,25 +66,25 @@ public:
 
     virtual future<> stop() override;
 
-    virtual future<> create(std::string_view role_name, const role_config&) const override;
+    virtual future<> create(stdx::string_view role_name, const role_config&) const override;
 
-    virtual future<> drop(std::string_view role_name) const override;
+    virtual future<> drop(stdx::string_view role_name) const override;
 
-    virtual future<> alter(std::string_view role_name, const role_config_update&) const override;
+    virtual future<> alter(stdx::string_view role_name, const role_config_update&) const override;
 
-    virtual future<> grant(std::string_view grantee_name, std::string_view role_name) const override;
+    virtual future<> grant(stdx::string_view grantee_name, stdx::string_view role_name) const override;
 
-    virtual future<> revoke(std::string_view revokee_name, std::string_view role_name) const override;
+    virtual future<> revoke(stdx::string_view revokee_name, stdx::string_view role_name) const override;
 
-    virtual future<role_set> query_granted(std::string_view grantee_name, recursive_role_query) const override;
+    virtual future<role_set> query_granted(stdx::string_view grantee_name, recursive_role_query) const override;
 
     virtual future<role_set> query_all() const override;
 
-    virtual future<bool> exists(std::string_view role_name) const override;
+    virtual future<bool> exists(stdx::string_view role_name) const override;
 
-    virtual future<bool> is_superuser(std::string_view role_name) const override;
+    virtual future<bool> is_superuser(stdx::string_view role_name) const override;
 
-    virtual future<bool> can_login(std::string_view role_name) const override;
+    virtual future<bool> can_login(stdx::string_view role_name) const override;
 
 private:
     enum class membership_change { add, remove };
@@ -96,9 +97,9 @@ private:
 
     future<> create_default_role_if_missing() const;
 
-    future<> create_or_replace(std::string_view role_name, const role_config&) const;
+    future<> create_or_replace(stdx::string_view role_name, const role_config&) const;
 
-    future<> modify_membership(std::string_view role_name, std::string_view grantee_name, membership_change) const;
+    future<> modify_membership(stdx::string_view role_name, stdx::string_view grantee_name, membership_change) const;
 };
 
 }

auth/transitional.cc

@@ -45,6 +45,7 @@
 #include "auth/default_authorizer.hh"
 #include "auth/password_authenticator.hh"
 #include "auth/permission.hh"
+#include "db/config.hh"
 #include "utils/class_registrator.hh"
 
 namespace auth {
@@ -82,7 +83,7 @@ public:
         return _authenticator->stop();
     }
 
-    virtual std::string_view qualified_java_name() const override {
+    virtual const sstring& qualified_java_name() const override {
         return transitional_authenticator_name();
     }
 
@@ -117,19 +118,19 @@ public:
         });
     }
 
-    virtual future<> create(std::string_view role_name, const authentication_options& options) const override {
+    virtual future<> create(stdx::string_view role_name, const authentication_options& options) const override {
         return _authenticator->create(role_name, options);
     }
 
-    virtual future<> alter(std::string_view role_name, const authentication_options& options) const override {
+    virtual future<> alter(stdx::string_view role_name, const authentication_options& options) const override {
         return _authenticator->alter(role_name, options);
     }
 
-    virtual future<> drop(std::string_view role_name) const override {
+    virtual future<> drop(stdx::string_view role_name) const override {
         return _authenticator->drop(role_name);
     }
 
-    virtual future<custom_options> query_custom_options(std::string_view role_name) const override {
+    virtual future<custom_options> query_custom_options(stdx::string_view role_name) const override {
         return _authenticator->query_custom_options(role_name);
     }
 
@@ -201,7 +202,7 @@ public:
         return _authorizer->stop();
     }
 
-    virtual std::string_view qualified_java_name() const override {
+    virtual const sstring& qualified_java_name() const override {
         return transitional_authorizer_name();
     }
 
@@ -217,11 +218,11 @@ public:
         return make_ready_future<permission_set>(transitional_permissions);
     }
 
-    virtual future<> grant(std::string_view s, permission_set ps, const resource& r) const override {
+    virtual future<> grant(stdx::string_view s, permission_set ps, const resource& r) const override {
         return _authorizer->grant(s, std::move(ps), r);
     }
 
-    virtual future<> revoke(std::string_view s, permission_set ps, const resource& r) const override {
+    virtual future<> revoke(stdx::string_view s, permission_set ps, const resource& r) const override {
         return _authorizer->revoke(s, std::move(ps), r);
     }
 
@@ -229,7 +230,7 @@ public:
         return _authorizer->list_all();
     }
 
-    virtual future<> revoke_all(std::string_view s) const override {
+    virtual future<> revoke_all(stdx::string_view s) const override {
         return _authorizer->revoke_all(s);
     }