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https://github.com/scylladb/scylladb.git
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d973445a94
" Adds extension points to schema/sstables to enable hooking in stuff, like, say, something that modifies how sstable disk io works. (Cough, cough, *encryption*) Extensions are processed as property keywords in CQL. To add an extension, a "module" must register it into the extensions object on boot time. To avoid globals (and yet don't), extensions are reachable from config (and thus from db). Table/view tables already contain an extension element, so we utilize this to persist config. schema_tables tables/views from mutations now require a "context" object (currently only extensions, but abstracted for easier further changes. Because of how schemas currently operate, there is a super lame workaround to allow "schema_registry" access to config and by extension extensions. DB, upon instansiation, calls a thread local global "init" in schema_registry and registers the config. It, in turn, can then call table_from_mutations as required. Includes the (modified) patch to encapsulate compression into objects, mainly because it is nice to encapsulate, and isolate a little. " * 'calle/extensions-v5' of github.com:scylladb/seastar-dev: extensions: Small unit test sstables: Process extensions on file open sstables::types: Add optional extensions attribute to scylla metadata sstables::disk_types: Add hash and comparator(sstring) to disk_string schema_tables: Load/save extensions table cql: Add schema extensions processing to properties schema_tables: Require context object in schema load path schema_tables: Add opaque context object config_file_impl: Remove ostream operators main/init: Formalize configurables + add extensions to init call db::config: Add extensions as a config sub-object db::extensions: Configuration object to store various extensions cql3::statements::property_definitions: Use std::variant instead of any sstables: Add extension type for wrapping file io schema: Add opaque type to represent extensions sstables::compress/compress: Make compression a virtual object
Scylla
Quick-start
$ 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 for detailed information on building and developing Scylla.
Running Scylla
- Run Scylla
./build/release/scylla
- run Scylla with one CPU and ./tmp as data directory
./build/release/scylla --datadir tmp --commitlog-directory tmp --smp 1
- For more run options:
./build/release/scylla --help
Building Fedora RPM
As a pre-requisite, you need to install Mock on your machine:
# Install mock:
sudo yum install mock
# Add user to the "mock" group:
usermod -a -G mock $USER && newgrp mock
Then, to build an RPM, run:
./dist/redhat/build_rpm.sh
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
Build a Docker image with:
cd dist/docker
docker build -t <image-name> .
Run the image with:
docker run -p $(hostname -i):9042:9042 -i -t <image name>