system_keyspace: Prune dropped tables from truncation on start/drop

Fixes #25683

Once a table drop is complete, there should be no reason to retain
truncation records for it, as any replay should skip mutations
anyway (no CF), and iff we somehow resurrect a dropped table,
this replay-resurrected data is the least problem anyway.

Adds a prune phase to the startup drop_truncation_rp_records run,
which ignores updating, and instead deletes records for non-existant
tables (which should patch any existing servers with lingering data
as well).

Also does an explicit delete of records on actual table DROP, to
ensure we don't grow this table more than needed even in long
uptime nodes.

Small unit test included.

Closes scylladb/scylladb#25699

(cherry picked from commit bc20861afb)

Closes scylladb/scylladb#25815

.github/CODEOWNERS

@@ -1,5 +1,5 @@
 # AUTH
-auth/* @nuivall
+auth/* @nuivall @ptrsmrn
 
 # CACHE
 row_cache* @tgrabiec
@@ -25,15 +25,15 @@ compaction/* @raphaelsc
 transport/*
 
 # CQL QUERY LANGUAGE
-cql3/* @tgrabiec @nuivall
+cql3/* @tgrabiec @nuivall @ptrsmrn
 
 # COUNTERS
-counters* @nuivall
-tests/counter_test* @nuivall
+counters* @nuivall @ptrsmrn
+tests/counter_test* @nuivall @ptrsmrn
 
 # DOCS
-/docs/ @annastuchlik @tzach
-/docs/alternator/ @annastuchlik @tzach @nyh
+docs/* @annastuchlik @tzach
+docs/alternator @annastuchlik @tzach @nyh
 
 # GOSSIP
 gms/* @tgrabiec @asias @kbr-scylla
@@ -57,6 +57,7 @@ repair/* @tgrabiec @asias
 
 # SCHEMA MANAGEMENT
 db/schema_tables* @tgrabiec
+db/legacy_schema_migrator* @tgrabiec
 service/migration* @tgrabiec
 schema* @tgrabiec
 
@@ -92,10 +93,6 @@ test/boost/querier_cache_test.cc @denesb
 # PYTEST-BASED CQL TESTS
 test/cqlpy/* @nyh
 
-# TEST FRAMEWORK
-test/pylib/* @xtrey
-test.py @xtrey
-
 # RAFT
 raft/* @kbr-scylla @gleb-cloudius @kostja
 test/raft/* @kbr-scylla @gleb-cloudius @kostja

.github/copilot-instructions.md

@@ -1,104 +0,0 @@
-# ScyllaDB Development Instructions
-
-## Project Context
-High-performance distributed NoSQL database. Core values: performance, correctness, readability.
-
-## Build System
-
-### Using native OS environment
-```bash
-# Configure (run once)
-./configure.py
-
-# Build everything
-ninja <mode>-build  # modes: dev, debug, release, sanitize
-                    # dev is recommended for development (fastest compilation)
-
-# Build Scylla binary only (sufficient for Python integration tests)
-ninja build/<mode>/scylla
-
-# Build specific test
-ninja build/<mode>/test/boost/<test_name>
-```
-
-### Using frozen toolchain (Docker)
-Prefix any build command with `./tools/toolchain/dbuild`.
-
-## Running Tests
-
-### C++ Unit Tests
-```bash
-# Run all tests in a file
-./test.py --mode=<mode> test/<suite>/<test_name>.cc
-
-# Run a single test case from a file
-./test.py --mode=<mode> test/<suite>/<test_name>.cc::<test_case_name>
-
-# Examples
-./test.py --mode=dev test/boost/memtable_test.cc
-./test.py --mode=dev test/raft/raft_server_test.cc::test_check_abort_on_client_api
-```
-
-**Important:** 
-- Use full path with `.cc` extension (e.g., `test/boost/memtable_test.cc`)
-- To run a single test case, append `::<test_case_name>` to the file path
-- If you encounter permission issues with cgroup metrics, add `--no-gather-metrics` to the `./test.py` command
-
-**Rebuilding Tests:**
-- test.py does NOT automatically rebuild when test source files are modified
-- Many tests are part of composite binaries (e.g., `combined_tests` in test/boost contains multiple test files)
-- To find which binary contains a test, check `configure.py` in the repository root (primary source) or `test/<suite>/CMakeLists.txt`
-- To rebuild a specific test binary: `ninja build/<mode>/test/<suite>/<binary_name>`
-- Examples: 
-  - `ninja build/dev/test/boost/combined_tests` (contains group0_voter_calculator_test.cc and others)
-  - `ninja build/dev/test/raft/replication_test` (standalone Raft test)
-
-### Python Integration Tests
-```bash
-# Only requires Scylla binary (full build usually not needed)
-ninja build/<mode>/scylla
-
-# Run all tests in a file
-./test.py --mode=<mode> test/<suite>/<test_name>.py
-
-# Run a single test case from a file
-./test.py --mode=<mode> test/<suite>/<test_name>.py::<test_function_name>
-
-# Examples
-./test.py --mode=dev test/alternator/
-./test.py --mode=dev test/cqlpy/test_json.py
-./test.py --mode=dev test/cluster/test_raft_voters.py::test_raft_limited_voters_retain_coordinator
-
-# Optional flags
-./test.py --mode=dev test/cluster/test_raft_no_quorum.py -v --repeat 5
-```
-
-**Important:**
-- Use full path with `.py` extension
-- To run a single test case, append `::<test_function_name>` to the file path
-- Add `-v` for verbose output
-- Add `--repeat <num>` to repeat a test multiple times
-- After modifying C++ source files, only rebuild the Scylla binary for Python tests
-
-## Code Philosophy
-- Performance matters in hot paths (data read/write, inner loops)
-- Self-documenting code through clear naming
-- Comments explain "why", not "what"
-- Prefer standard library over custom implementations
-- Strive for simplicity and clarity, add complexity only when clearly justified
-- Question requests: don't blindly implement requests - evaluate trade-offs, identify issues, and suggest better alternatives when appropriate
-- Consider different approaches, weigh pros and cons, and recommend the best fit for the specific context
-
-## Test Philosophy
-- Performance matters. Tests should run as quickly as possible. Sleeps in the code are highly discouraged and should be avoided, to reduce run time and flakiness.
-- Stability matters. Tests should be stable. New tests should be executed 100 times at least to ensure they pass 100 out of 100 times. (use --repeat 100 --max-failures 1 when running it)
-- Unit tests should ideally test one thing only.
-- Tests for bug fixes should run before the fix - and show the failure and after the fix - and show they now pass.
-- Tests for bug fixes should have in their comments which bug fixes (GitHub or JIRA issue) they test.
-- Tests in debug are always slower, so if needed, reduce number of iterations, rows, data used, cycles, etc. in debug mode.
-- Tests should strive to be repeatable, and not use random input that will make their results unpredictable.
-- Tests should consume as little resources as possible. Prefer running tests on a single node if it is sufficient, for example.
-
-## New Files
-- Include `LicenseRef-ScyllaDB-Source-Available-1.1` in the SPDX header
-- Use the current year for new files; for existing code keep the year as is

.github/dependabot.yml

@@ -1,6 +1,6 @@
 version: 2
 updates:
-- package-ecosystem: "uv"
+- package-ecosystem: "pip"
   directory: "/docs"
   schedule:
     interval: "daily"

.github/instructions/cpp.instructions.md

@@ -1,121 +0,0 @@
----
-applyTo: "**/*.{cc,hh}"
----
-
-# C++ Guidelines
-
-**Important:** Always match the style and conventions of existing code in the file and directory.
-
-## Memory Management
-- Prefer stack allocation whenever possible
-- Use `std::unique_ptr` by default for dynamic allocations
-- `new`/`delete` are forbidden (use RAII)
-- Use `seastar::lw_shared_ptr` or `seastar::shared_ptr` for shared ownership within same shard
-- Use `seastar::foreign_ptr` for cross-shard sharing
-- Avoid `std::shared_ptr` except when interfacing with external C++ APIs
-- Avoid raw pointers except for non-owning references or C API interop
-
-## Seastar Asynchronous Programming
-- Use `seastar::future<T>` for all async operations
-- Prefer coroutines (`co_await`, `co_return`) over `.then()` chains for readability
-- Coroutines are preferred over `seastar::do_with()` for managing temporary state
-- In hot paths where futures are ready, continuations may be more efficient than coroutines
-- Chain futures with `.then()`, don't block with `.get()` (unless in `seastar::thread` context)
-- All I/O must be asynchronous (no blocking calls)
-- Use `seastar::gate` for shutdown coordination
-- Use `seastar::semaphore` for resource limiting (not `std::mutex`)
-- Break long loops with `maybe_yield()` to avoid reactor stalls
-- Most Scylla code runs on a single shard where atomics are unnecessary
-- Use Seastar message passing for cross-shard communication
-
-## Coroutines
-```cpp
-seastar::future<T> func() {
-    auto result = co_await async_operation();
-    co_return result;
-}
-```
-
-## Error Handling
-- Throw exceptions for errors (futures propagate them automatically)
-- In coroutines, use `co_await coroutine::return_exception_ptr()` or `co_return coroutine::exception()` to avoid the overhead of throwing
-- In data path: avoid exceptions, use `std::expected` (or `boost::outcome`) instead
-- Use standard exceptions (`std::runtime_error`, `std::invalid_argument`)
-- Database-specific: throw appropriate schema/query exceptions
-
-## Invariant Checking
-- Prefer `throwing_assert()` (`utils/assert.hh`), it logs and throws instead of aborting
-- Use `SCYLLA_ASSERT` where critical to system stability where no clean shutdown is possible, it aborts
-- Use `on_internal_error()` for should-never-happen conditions that should be logged with backtrace
-
-## Performance
-- Pass large objects by `const&` or `&&` (move semantics)
-- Use `std::string_view` for non-owning string references
-- Avoid copies: prefer move semantics
-- Use `utils::chunked_vector` instead of `std::vector` for large allocations (>128KB)
-- Minimize dynamic allocations in hot paths
-
-## Database-Specific Types
-- Use `schema_ptr` for schema references
-- Use `mutation` and `mutation_partition` for data modifications
-- Use `partition_key` and `clustering_key` for keys
-- Use `api::timestamp_type` for database timestamps
-- Use `gc_clock` for garbage collection timing
-
-## Style
-- C++23 standard (prefer modern features, especially coroutines)
-- Use `auto` when type is obvious from RHS
-- Avoid `auto` when it obscures the type
-- Use range-based for loops: `for (const auto& item : container)`
-- Use standard algorithms when they clearly simplify code (e.g., replacing 10-line loops)
-- Avoid chaining multiple algorithms if a straightforward loop is clearer
-- Mark functions and variables `const` whenever possible
-- Use scoped enums: `enum class` (not unscoped `enum`)
-
-## Headers
-- Use `#pragma once`
-- Include order: own header, C++ std, Seastar, Boost, project headers
-- Forward declare when possible
-- Never `using namespace` in headers. Exception: most headers include `seastarx.hh`, which provides `using namespace seastar` project-wide.
-
-## Documentation
-- Public APIs require clear documentation
-- Implementation details should be self-evident from code
-- Use `///` or Doxygen `/** */` for public documentation, `//` for implementation notes - follow the existing style
-
-## Naming
-- `snake_case` for most identifiers (classes, functions, variables, namespaces)
-- Template parameters: `CamelCase` (e.g., `template<typename ValueType>`)
-- Member variables: prefix with `_` (e.g., `int _count;`)
-- Structs (value-only): no `_` prefix on members
-- Constants and `constexpr`: `snake_case` (e.g., `static constexpr int max_size = 100;`)
-- Files: `.hh` for headers, `.cc` for source
-
-## Formatting
-- 4 spaces indentation, never tabs
-- Opening braces on same line as control structure (except namespaces)
-- Space after keywords: `if (`, `while (`, `return `
-- Whitespace around operators matches precedence: `*a + *b` not `* a+* b`
-- Line length: keep reasonable (<160 chars), use continuation lines with double indent if needed
-- Brace all nested scopes, even single statements
-- Minimal patches: only format code you modify, never reformat entire files
-
-## Logging
-- Use structured logging with appropriate levels: DEBUG, INFO, WARN, ERROR
-- Include context in log messages (e.g., request IDs)
-- Never log sensitive data (credentials, PII)
-
-## Forbidden
-- `malloc`/`free`
-- `printf` family (use logging or fmt)
-- Raw pointers for ownership
-- Blocking operations: `std::sleep`, `std::read`, `std::mutex` (use Seastar equivalents)
-- New ad-hoc macros (prefer `inline`, `constexpr`, or templates; established project macros like `SCYLLA_ASSERT` are fine)
-
-## Testing
-When modifying existing code, follow TDD: create/update test first, then implement.
-- Examine existing tests for style and structure
-- Use Boost.Test framework
-- Use `SEASTAR_THREAD_TEST_CASE` for Seastar asynchronous tests
-- Aim for high code coverage, especially for new features and bug fixes
-- Maintain bisectability: all tests must pass in every commit. Mark failing tests with `BOOST_FAIL()` or similar, then fix in subsequent commit

.github/instructions/python.instructions.md

@@ -1,51 +0,0 @@
----
-applyTo: "**/*.py"
----
-
-# Python Guidelines
-
-**Important:** Match existing code style. Some directories (like `test/cqlpy` and `test/alternator`) prefer simplicity over type hints and docstrings.
-
-## Style
-- Match style of the file and directory you are editing; fall back to PEP 8 if unclear
-- Use type hints for function signatures (unless directory style omits them)
-- Use f-strings for formatting
-- Line length: 160 characters max
-- 4 spaces for indentation
-
-## Imports
-Order: standard library, third-party, local imports
-```python
-import os
-import sys
-
-import pytest
-from cassandra.cluster import Cluster
-
-from test.utils import setup_keyspace
-```
-
-Avoid wildcard imports (`from module import *`).
-
-## Documentation
-All public functions/classes need docstrings (unless the current directory conventions omit them):
-```python
-def my_function(arg1: str, arg2: int) -> bool:
-    """
-    Brief summary of function purpose.
-
-    Args:
-        arg1: Description of first argument.
-        arg2: Description of second argument.
-
-    Returns:
-        Description of return value.
-    """
-    pass
-```
-
-## Testing Best Practices
-- Maintain bisectability: all tests must pass in every commit
-- Mark currently-failing tests with `@pytest.mark.xfail`, unmark when fixed
-- Use descriptive names that convey intent
-- Docstrings/comments should explain what the test verifies and why, and if it reproduces a specific issue or how it fits into the larger test suite

.github/scripts/auto-backport.py

@@ -47,29 +47,13 @@ def create_pull_request(repo, new_branch_name, base_branch_name, pr, backport_pr
             draft=is_draft
         )
         logging.info(f"Pull request created: {backport_pr.html_url}")
-        labels_to_add = []
-        priority_labels = {"P0", "P1"}
-        parent_pr_labels = [label.name for label in pr.labels]
-        for label in priority_labels:
-            if label in parent_pr_labels:
-                labels_to_add.append(label)
-                labels_to_add.append("force_on_cloud")
-                logging.info(f"Adding {label} and force_on_cloud labels from parent PR to backport PR")
-                break  # Only apply the highest priority label
-        
         if is_collaborator:
             backport_pr.add_to_assignees(pr.user)
         if is_draft:
-            labels_to_add.append("conflicts")
+            backport_pr.add_to_labels("conflicts")
             pr_comment = f"@{pr.user.login} - This PR was marked as draft because it has conflicts\n"
-            pr_comment += "Please resolve them and remove the 'conflicts' label. The PR will be made ready for review automatically."
+            pr_comment += "Please resolve them and mark this PR as ready for review"
             backport_pr.create_issue_comment(pr_comment)
-        
-        # Apply all labels at once if we have any
-        if labels_to_add:
-            backport_pr.add_to_labels(*labels_to_add)
-            logging.info(f"Added labels to backport PR: {labels_to_add}")
-
         logging.info(f"Assigned PR to original author: {pr.user}")
         return backport_pr
     except GithubException as e:
@@ -142,31 +126,20 @@ def backport(repo, pr, version, commits, backport_base_branch, is_collaborator):
 
 
 def with_github_keyword_prefix(repo, pr):
-    # GitHub issue pattern: #123, scylladb/scylladb#123, or full GitHub URLs
-    github_pattern = rf"(?:fix(?:|es|ed))\s*:?\s*(?:(?:(?:{repo.full_name})?#)|https://github\.com/{repo.full_name}/issues/)(\d+)"
-    
-    # JIRA issue pattern: PKG-92 or https://scylladb.atlassian.net/browse/PKG-92
-    jira_pattern = r"(?:fix(?:|es|ed))\s*:?\s*(?:(?:https://scylladb\.atlassian\.net/browse/)?([A-Z]+-\d+))"
-    
-    # Check PR body for GitHub issues
-    github_match = re.findall(github_pattern, pr.body, re.IGNORECASE)
-    # Check PR body for JIRA issues
-    jira_match = re.findall(jira_pattern, pr.body, re.IGNORECASE)
-    
-    match = github_match or jira_match
-
-    if match:
+    pattern = rf"(?:fix(?:|es|ed))\s*:?\s*(?:(?:(?:{repo.full_name})?#)|https://github\.com/{repo.full_name}/issues/)(\d+)"
+    match = re.findall(pattern, pr.body, re.IGNORECASE)
+    if not match:
+        for commit in pr.get_commits():
+            match = re.findall(pattern, commit.commit.message, re.IGNORECASE)
+            if match:
+                print(f'{pr.number} has a valid close reference in commit message {commit.sha}')
+                break
+    if not match:
+        print(f'No valid close reference for {pr.number}')
+        return False
+    else:
         return True
 
-    for commit in pr.get_commits():
-        github_match = re.findall(github_pattern, commit.commit.message, re.IGNORECASE)
-        jira_match = re.findall(jira_pattern, commit.commit.message, re.IGNORECASE)
-        if github_match or jira_match:
-            print(f'{pr.number} has a valid close reference in commit message {commit.sha}')
-            return True
-
-    print(f'No valid close reference for {pr.number}')
-    return False
 
 def main():
     args = parse_args()

.github/scripts/check-license.py

@@ -4,7 +4,7 @@
 # Copyright (C) 2024-present ScyllaDB
 #
 #
-# SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+# SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
 #
 
 import argparse

.github/scripts/sync_labels.py

@@ -30,13 +30,8 @@ def copy_labels_from_linked_issues(repo, pr_number):
             try:
                 issue = repo.get_issue(int(issue_number))
                 for label in issue.labels:
-                    # Copy ALL labels from issues to PR when PR is opened
                     pr.add_to_labels(label.name)
-                    print(f"Copied label '{label.name}' from issue #{issue_number} to PR #{pr_number}")
-                    if label.name in ['P0', 'P1']:
-                        pr.add_to_labels('force_on_cloud')
-                        print(f"Added force_on_cloud label to PR #{pr_number} due to {label.name} label")
-                print(f"All labels from issue #{issue_number} copied to PR #{pr_number}")
+                print(f"Labels from issue #{issue_number} copied to PR #{pr_number}")
             except Exception as e:
                 print(f"Error processing issue #{issue_number}: {e}")
 
@@ -79,22 +74,9 @@ def sync_labels(repo, number, label, action, is_issue=False):
             target = repo.get_issue(int(pr_or_issue_number))
         if action == 'labeled':
             target.add_to_labels(label)
-            if label in ['P0', 'P1'] and is_issue:
-                # Only add force_on_cloud to PRs when P0/P1 is added to an issue
-                target.add_to_labels('force_on_cloud')
-                print(f"Added 'force_on_cloud' label to PR #{pr_or_issue_number} due to {label} label")
             print(f"Label '{label}' successfully added.")
         elif action == 'unlabeled':
             target.remove_from_labels(label)
-            if label in ['P0', 'P1'] and is_issue:
-                # Check if any other P0/P1 labels remain before removing force_on_cloud
-                remaining_priority_labels = [l.name for l in target.labels if l.name in ['P0', 'P1']]
-                if not remaining_priority_labels:
-                    try:
-                        target.remove_from_labels('force_on_cloud')
-                        print(f"Removed 'force_on_cloud' label from PR #{pr_or_issue_number} as no P0/P1 labels remain")
-                    except Exception as e:
-                        print(f"Warning: Could not remove force_on_cloud label: {e}")
             print(f"Label '{label}' successfully removed.")
         elif action == 'opened':
             copy_labels_from_linked_issues(repo, number)

.github/workflows/add-label-when-promoted.yaml

@@ -10,9 +10,6 @@ on:
     types: [labeled, unlabeled]
     branches: [master, next, enterprise]
 
-env:
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
-
 jobs:
   check-commit:
     runs-on: ubuntu-latest
@@ -33,7 +30,7 @@ jobs:
             echo "DEFAULT_BRANCH=master" >> $GITHUB_ENV
           fi
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@v4
         with:
           repository: ${{ github.repository }}
           ref: ${{ env.DEFAULT_BRANCH }}
@@ -57,13 +54,10 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.AUTO_BACKPORT_TOKEN }}
         run: python .github/scripts/auto-backport.py --repo ${{ github.repository }} --base-branch ${{ github.ref }} --commits ${{ github.event.before }}..${{ github.sha }}
       - name: Check if a valid backport label exists and no backport_error
-        env:
-          LABELS_JSON: ${{ toJson(github.event.pull_request.labels) }}
         id: check_label
         run: |
-          labels_json="$LABELS_JSON"
-          echo "Checking labels:"
-          echo "$labels_json" | jq -r '.[].name'
+          labels_json='${{ toJson(github.event.pull_request.labels) }}'
+          echo "Checking labels: $(echo "$labels_json" | jq -r '.[].name')"
 
           # Check if a valid backport label exists
           if echo "$labels_json" | jq -e 'any(.[] | .name; test("backport/[0-9]+\\.[0-9]+$"))' > /dev/null; then

.github/workflows/backport-pr-fixes-validation.yaml

@@ -5,18 +5,12 @@ on:
     types: [opened, reopened, edited]
     branches: [branch-*]
 
-env:
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
-
 jobs:
   check-fixes-prefix:
     runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      issues: write
     steps:
       - name: Check PR body for "Fixes" prefix patterns
-        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
+        uses: actions/github-script@v7
         with:
           script: |
             const body = context.payload.pull_request.body;
@@ -24,7 +18,7 @@ jobs:
             
             // Regular expression pattern to check for "Fixes" prefix
             // Adjusted to dynamically insert the repository full name
-            const pattern = `Fixes:? ((?:#|${repo.replace('/', '\\/')}#|https://github\\.com/${repo.replace('/', '\\/')}/issues/)(\\d+)|(?:https://scylladb\\.atlassian\\.net/browse/)?([A-Z]+-\\d+))`;
+            const pattern = `Fixes:? (?:#|${repo.replace('/', '\\/')}#|https://github\\.com/${repo.replace('/', '\\/')}/issues/)(\\d+)`;
             const regex = new RegExp(pattern);
             
             if (!regex.test(body)) {

.github/workflows/build-scylla.yaml

@@ -12,9 +12,6 @@ on:
         description: 'the md5sum for scylla executable'
         value: ${{ jobs.build.outputs.md5sum }}
 
-env:
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
-
 jobs:
   read-toolchain:
     uses: ./.github/workflows/read-toolchain.yaml
@@ -27,7 +24,7 @@ jobs:
     outputs:
       md5sum: ${{ steps.checksum.outputs.md5sum }}
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
       - name: Generate the building system

.github/workflows/call_backport_with_jira.yaml

@@ -1,53 +0,0 @@
-name: Backport with Jira Integration
-
-on:
-  push:
-    branches:
-      - master
-      - next-*.*
-      - branch-*.*
-  pull_request_target:
-    types: [labeled, closed]
-    branches: 
-      - master
-      - next
-      - next-*.*
-      - branch-*.*
-
-jobs:
-  backport-on-push:
-    if: github.event_name == 'push'
-    uses: scylladb/github-automation/.github/workflows/backport-with-jira.yaml@main
-    with:
-      event_type: 'push'
-      base_branch: ${{ github.ref }}
-      commits: ${{ github.event.before }}..${{ github.sha }}
-    secrets:
-      gh_token: ${{ secrets.AUTO_BACKPORT_TOKEN }}
-      jira_auth: ${{ secrets.USER_AND_KEY_FOR_JIRA_AUTOMATION }}
-
-  backport-on-label:
-    if: github.event_name == 'pull_request_target' && github.event.action == 'labeled'
-    uses: scylladb/github-automation/.github/workflows/backport-with-jira.yaml@main
-    with:
-      event_type: 'labeled'
-      base_branch: refs/heads/${{ github.event.pull_request.base.ref }}
-      pull_request_number: ${{ github.event.pull_request.number }}
-      head_commit: ${{ github.event.pull_request.base.sha }}
-      label_name: ${{ github.event.label.name }}
-      pr_state: ${{ github.event.pull_request.state }}
-    secrets:
-      gh_token: ${{ secrets.AUTO_BACKPORT_TOKEN }}
-      jira_auth: ${{ secrets.USER_AND_KEY_FOR_JIRA_AUTOMATION }}
-
-  backport-chain:
-    if: github.event_name == 'pull_request_target' && github.event.action == 'closed' && github.event.pull_request.merged == true
-    uses: scylladb/github-automation/.github/workflows/backport-with-jira.yaml@main
-    with:
-      event_type: 'chain'
-      base_branch: refs/heads/${{ github.event.pull_request.base.ref }}
-      pull_request_number: ${{ github.event.pull_request.number }}
-      pr_body: ${{ github.event.pull_request.body }}
-    secrets:
-      gh_token: ${{ secrets.AUTO_BACKPORT_TOKEN }}
-      jira_auth: ${{ secrets.USER_AND_KEY_FOR_JIRA_AUTOMATION }}

.github/workflows/call_jira_sync.yml

@@ -1,18 +0,0 @@
-name: Sync Jira Based on PR Events
-
-on:
-  pull_request_target:
-    types: [opened, edited, ready_for_review, review_requested, labeled, unlabeled, closed]
-
-permissions:
-  contents: read
-  pull-requests: write
-  issues: write
-
-jobs:
-  jira-sync:
-    uses: scylladb/github-automation/.github/workflows/main_pr_events_jira_sync.yml@main
-    with:
-      caller_action: ${{ github.event.action }}
-    secrets:
-      caller_jira_auth: ${{ secrets.USER_AND_KEY_FOR_JIRA_AUTOMATION }}

.github/workflows/call_jira_sync_pr_milestone.yml

@@ -1,22 +0,0 @@
-name: Sync Jira Based on PR Milestone Events
-
-on:
-  pull_request_target:
-    types: [milestoned, demilestoned]
-
-permissions:
-  contents: read
-  pull-requests: read
-
-jobs:
-  jira-sync-milestone-set:
-    if: github.event.action == 'milestoned'
-    uses: scylladb/github-automation/.github/workflows/main_jira_sync_pr_milestone_set.yml@main
-    secrets:
-      caller_jira_auth: ${{ secrets.USER_AND_KEY_FOR_JIRA_AUTOMATION }}
-
-  jira-sync-milestone-removed:
-    if: github.event.action == 'demilestoned'
-    uses: scylladb/github-automation/.github/workflows/main_jira_sync_pr_milestone_removed.yml@main
-    secrets:
-      caller_jira_auth: ${{ secrets.USER_AND_KEY_FOR_JIRA_AUTOMATION }}

.github/workflows/call_sync_milestone_to_jira.yml

@@ -1,14 +0,0 @@
-name: Call Jira release creation for new milestone
-
-on:
-  milestone:
-    types: [created, closed]
-
-jobs:
-  sync-milestone-to-jira:
-    uses: scylladb/github-automation/.github/workflows/main_sync_milestone_to_jira_release.yml@main
-    with:
-      # Comma-separated list of Jira project keys
-      jira_project_keys: "SCYLLADB,CUSTOMER,SMI,RELENG,VECTOR"
-    secrets:
-      caller_jira_auth: ${{ secrets.USER_AND_KEY_FOR_JIRA_AUTOMATION }}

.github/workflows/call_validate_pr_author_email.yml

@@ -1,18 +0,0 @@
-name: validate_pr_author_email
-
-on:
-  pull_request_target:
-    types:
-      - opened
-      - synchronize
-      - reopened
-
-permissions:
-  contents: read
-  pull-requests: write
-  statuses: write
-
-jobs:
-  validate_pr_author_email:
-    uses: scylladb/github-automation/.github/workflows/validate_pr_author_email.yml@main
-

.github/workflows/check-license-header.yaml

@@ -7,9 +7,8 @@ on:
 
 env:
   HEADER_CHECK_LINES: 10
-  LICENSE: "LicenseRef-ScyllaDB-Source-Available-1.1"
+  LICENSE: "LicenseRef-ScyllaDB-Source-Available-1.0"
   CHECKED_EXTENSIONS: ".cc .hh .py"
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
 
 jobs:
   check-license-headers:
@@ -20,7 +19,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -41,7 +40,7 @@ jobs:
 
       - name: Comment on PR if check fails
         if: failure()
-        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
+        uses: actions/github-script@v7
         with:
           script: |
             const license = '${{ env.LICENSE }}';

.github/workflows/clang-nightly.yaml

@@ -9,7 +9,6 @@ env:
   # use the development branch explicitly
   CLANG_VERSION: 21
   BUILD_DIR: build
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
 
 permissions: {}
 
@@ -33,7 +32,7 @@ jobs:
     steps:
       - run: |
           sudo dnf -y install git
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@v4
         with:
           submodules: true
       - name: Install build dependencies

.github/workflows/clang-tidy.yaml

@@ -18,7 +18,6 @@ env:
   BUILD_TYPE: RelWithDebInfo
   BUILD_DIR: build
   CLANG_TIDY_CHECKS: '-*,bugprone-use-after-move'
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
 
 permissions: {}
 
@@ -43,7 +42,7 @@ jobs:
           IMAGE: ${{ needs.read-toolchain.image }}
         run: |
           echo ${{ needs.read-toolchain.image }}
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@v4
         with:
           submodules: true
       - run: |

.github/workflows/close_issue_for_scylla_associate.yml

@@ -1,65 +0,0 @@
-name: Close issues created by Scylla associates
-
-on:
-  issues:
-    types: [opened, reopened]
-
-permissions:
-  issues: write
-
-env:
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
-
-jobs:
-  comment-and-close:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Comment and close if author email is scylladb.com
-        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
-        with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          script: |
-            const issue = context.payload.issue;
-            const actor = context.actor;
-
-            // Get user data (only public email is available)
-            const { data: user } = await github.rest.users.getByUsername({
-              username: actor,
-            });
-
-            const email = user.email || "";
-            console.log(`Actor: ${actor}, public email: ${email || "<none>"}`);
-
-            // Only continue if email exists and ends with @scylladb.com
-            if (!email || !email.toLowerCase().endsWith("@scylladb.com")) {
-              console.log("User is not a scylladb.com email (or email not public); skipping.");
-              return;
-            }
-
-            const owner = context.repo.owner;
-            const repo = context.repo.repo;
-            const issue_number = issue.number;
-
-            const body = "Issues in this repository are closed automatically. Scylla associates should use Jira to manage issues.\nPlease move this issue to Jira https://scylladb.atlassian.net/jira/software/c/projects/SCYLLADB/list";
-
-            // Add the comment
-            await github.rest.issues.createComment({
-              owner,
-              repo,
-              issue_number,
-              body,
-            });
-
-            console.log(`Comment added to #${issue_number}`);
-
-            // Close the issue
-            await github.rest.issues.update({
-              owner,
-              repo,
-              issue_number,
-              state: "closed",
-              state_reason: "not_planned"
-            });
-
-            console.log(`Issue #${issue_number} closed.`);

.github/workflows/codespell.yaml

@@ -4,16 +4,14 @@ on:
     branches:
       - master
 permissions: {}
-env:
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
 jobs:
   codespell:
     name: Check for spelling errors
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-      - uses: codespell-project/actions-codespell@8f01853be192eb0f849a5c7d721450e7a467c579 # v2.2
+      - uses: actions/checkout@v4
+      - uses: codespell-project/actions-codespell@master
         with:
           only_warn: 1
-          ignore_words_list: "ans,datas,fo,ser,ue,crate,nd,reenable,strat,stap,te,raison,iif,tread"
+          ignore_words_list: "ans,datas,fo,ser,ue,crate,nd,reenable,strat,stap,te,raison"
           skip: "./.git,./build,./tools,*.js,*.lock,./test,./licenses,./redis/lolwut.cc,*.svg"

.github/workflows/compare-build-systems.yaml

@@ -1,38 +0,0 @@
-name: Compare Build Systems
-
-on:
-  pull_request:
-    branches:
-      - master
-    paths:
-      - 'configure.py'
-      - '**/CMakeLists.txt'
-      - 'cmake/**'
-      - 'scripts/compare_build_systems.py'
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-# cancel the in-progress run upon a repush
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  read-toolchain:
-    uses: ./.github/workflows/read-toolchain.yaml
-  compare:
-    name: Compare configure.py vs CMake
-    needs:
-      - read-toolchain
-    runs-on: ubuntu-latest
-    container: ${{ needs.read-toolchain.outputs.image }}
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          submodules: true
-      - name: Compare build systems
-        run: |
-          git config --global --add safe.directory $GITHUB_WORKSPACE
-          python3 scripts/compare_build_systems.py --ci

.github/workflows/conflict_reminder.yaml

@@ -10,10 +10,7 @@ on:
       - 'master'
       - 'branch-*'
   schedule:
-    - cron: '0 10 * * 1'  # Runs every Monday at 10:00am
-
-env:
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
+    - cron: '0 10 * * 1,4'  # Runs every Monday and Thursday at 10:00am
 
 jobs:
   notify_conflict_prs:
@@ -21,7 +18,7 @@ jobs:
 
     steps:
       - name: Notify PR Authors of Conflicts
-        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
+        uses: actions/github-script@v7
         with:
           script: |
             console.log("Starting conflict reminder script...");
@@ -45,10 +42,10 @@ jobs:
             const recentPrs = prs.filter(pr => new Date(pr.created_at) >= twoMonthsAgo);
             const validBaseBranches = ['master'];
             const branchPrefix = 'branch-';
-            const oneWeekAgo = new Date();
+            const threeDaysAgo = new Date();
             const conflictLabel = 'conflicts';
-            oneWeekAgo.setDate(oneWeekAgo.getDate() - 7);
-            console.log(`One week ago: ${oneWeekAgo.toISOString()}`);
+            threeDaysAgo.setDate(threeDaysAgo.getDate() - 3);
+            console.log(`Three days ago: ${threeDaysAgo.toISOString()}`);
 
             for (const pr of recentPrs) {
               console.log(`Checking PR #${pr.number} on base branch '${pr.base.ref}'`);
@@ -60,8 +57,8 @@ jobs:
               }
               const updatedDate = new Date(pr.updated_at);
               console.log(`PR #${pr.number} last updated at: ${updatedDate.toISOString()}`);
-              if (!isPushEvent && updatedDate >= oneWeekAgo) {
-                console.log(`PR #${pr.number} skipped: updated within last week`);
+              if (!isPushEvent && updatedDate >= threeDaysAgo) {
+                console.log(`PR #${pr.number} skipped: updated within last 3 days`);
                 continue;
               }
               if (pr.assignee === null) {
@@ -93,41 +90,34 @@ jobs:
                 const hasConflictLabel = pr.labels.some(label => label.name === conflictLabel);
                 console.log(`PR #${pr.number} has conflict label: ${hasConflictLabel}`);
 
-                // Fetch comments to check for existing notifications
-                const comments = await github.paginate(github.rest.issues.listComments, {
-                  owner: context.repo.owner,
-                  repo: context.repo.repo,
-                  issue_number: pr.number,
-                  per_page: 100,
-                });
-                
-                // Find last notification comment from the bot
-                const notificationPrefix = `@${pr.assignee.login}, this PR has merge conflicts with the base branch.`;
-                const lastNotification = comments
-                  .filter(c =>
-                    c.user.type === "Bot" &&
-                    c.body.startsWith(notificationPrefix)
-                  )
-                  .sort((a, b) => new Date(b.created_at) - new Date(a.created_at))[0];
-
-                // Check if we should skip notification based on recent notification
-                let shouldSkipNotification = false;
-                if (lastNotification) {
-                  const lastNotified = new Date(lastNotification.created_at);
-                  if (lastNotified >= oneWeekAgo) {
-                    console.log(`PR #${pr.number} skipped: last notification was less than 1 week ago`);
-                    shouldSkipNotification = true;
-                  }
-                }
-
-                // Additional check for push events on draft PRs with conflict labels
                 if (
                   isPushEvent &&
                   pr.draft === true &&
-                  hasConflictLabel &&
-                  shouldSkipNotification
+                  hasConflictLabel
                 ) {
-                  continue;
+                  // Fetch comments to find last bot notification
+                  const comments = await github.paginate(github.rest.issues.listComments, {
+                    owner: context.repo.owner,
+                    repo: context.repo.repo,
+                    issue_number: pr.number,
+                    per_page: 100,
+                  });
+                  // Find last notification comment from the bot (by body and user)
+                  const botLogin = context.actor;
+                  const notificationPrefix = `@${pr.assignee.login}, this PR has merge conflicts with the base branch.`;
+                  const lastNotification = comments
+                    .filter(c =>
+                      c.user.type === "Bot" &&
+                      c.body.startsWith(notificationPrefix)
+                    )
+                    .sort((a, b) => new Date(b.created_at) - new Date(a.created_at))[0];
+                  if (lastNotification) {
+                    const lastNotified = new Date(lastNotification.created_at);
+                    if (lastNotified >= threeDaysAgo) {
+                      console.log(`PR #${pr.number} skipped: last notification was less than 3 days ago`);
+                      continue;
+                    }
+                  }
                 }
 
                 if (!hasConflictLabel) {
@@ -139,9 +129,8 @@ jobs:
                   });
                   console.log(`Added 'conflicts' label to PR #${pr.number}`);
                 }
-                
                 const assignee = pr.assignee.login;
-                if (assignee && !shouldSkipNotification) {
+                if (assignee) {
                   await github.rest.issues.createComment({
                     owner: context.repo.owner,
                     repo: context.repo.repo,

.github/workflows/differential-shellcheck.yaml

@@ -13,9 +13,6 @@ on:
 permissions:
   contents: read
 
-env:
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
-
 jobs:
   lint:
     runs-on: ubuntu-latest
@@ -24,12 +21,12 @@ jobs:
       security-events: write
 
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
       - name: Differential ShellCheck
-        uses: redhat-plumbers-in-action/differential-shellcheck@d965e66ec0b3b2f821f75c8eff9b12442d9a7d1e # v5.5.6
+        uses: redhat-plumbers-in-action/differential-shellcheck@v5
         with:
           severity: warning
           token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/docs-pages.yaml

@@ -5,7 +5,6 @@ name: "Docs / Publish"
 env:
   FLAG: ${{ github.repository == 'scylladb/scylla-enterprise' && 'enterprise' || 'opensource' }}
   DEFAULT_BRANCH: ${{ github.repository == 'scylladb/scylla-enterprise' && 'enterprise' || 'master' }}
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
 
 on:
   push:
@@ -19,24 +18,18 @@ on:
 
 jobs:
   release:
-    permissions:
-      pages: write
-      id-token: write
-      contents: write
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@v4
         with:
           ref: ${{ env.DEFAULT_BRANCH }}
           persist-credentials: false
           fetch-depth: 0
       - name: Set up Python
-        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
+        uses: actions/setup-python@v5
         with:
-          python-version: "3.12"
-      - name: Install uv
-        uses: astral-sh/setup-uv@cec208311dfd045dd5311c1add060b2062131d57 # v8.0.0
+          python-version: "3.10"
       - name: Set up env
         run: make -C docs FLAG="${{ env.FLAG }}" setupenv
       - name: Build docs

.github/workflows/docs-pr.yaml

@@ -2,12 +2,8 @@ name: "Docs / Build PR"
 # For more information,
 # see https://sphinx-theme.scylladb.com/stable/deployment/production.html#available-workflows
 
-permissions:
-  contents: read
-
 env:
   FLAG: ${{ github.repository == 'scylladb/scylla-enterprise' && 'enterprise' || 'opensource' }}
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
 
 on:
   pull_request:
@@ -23,16 +19,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@v4
         with:
           persist-credentials: false
           fetch-depth: 0
       - name: Set up Python
-        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
+        uses: actions/setup-python@v5
         with:
-          python-version: "3.12"
-      - name: Install uv
-        uses: astral-sh/setup-uv@cec208311dfd045dd5311c1add060b2062131d57 # v8.0.0
+          python-version: "3.10"
       - name: Set up env
         run: make -C docs FLAG="${{ env.FLAG }}" setupenv
       - name: Build docs

.github/workflows/docs-validate-metrics.yml

@@ -1,40 +0,0 @@
-name: Docs / Validate metrics
-
-permissions:
-  contents: read
-
-env:
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
-
-on:
-  pull_request:
-    branches:
-      - master
-      - enterprise
-    paths:
-      - '**/*.cc'
-      - 'scripts/metrics-config.yml'
-      - 'scripts/get_description.py'
-      - 'docs/_ext/scylladb_metrics.py'
-
-jobs:
-  validate-metrics:
-    runs-on: ubuntu-latest
-    name: Check metrics documentation coverage
-
-    steps:
-    - name: Checkout code
-      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-      with:
-        submodules: true
-
-    - name: Set up Python
-      uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
-      with:
-        python-version: '3.10'
-
-    - name: Install dependencies
-      run: pip install PyYAML
-
-    - name: Validate metrics
-      run: python3 scripts/get_description.py --validate -c scripts/metrics-config.yml

.github/workflows/iwyu.yaml

@@ -13,10 +13,8 @@ env:
   # supposed to be processed by idl-compiler.py, so we don't check them using the cleaner
   CLEANER_DIRS: test/unit exceptions alternator api auth cdc compaction db dht gms index lang message mutation mutation_writer node_ops raft redis replica service
   SEASTAR_BAD_INCLUDE_OUTPUT_PATH: build/seastar-bad-include.log
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
 
-permissions:
-  contents: read
+permissions: {}
 
 # cancel the in-progress run upon a repush
 concurrency:
@@ -33,9 +31,11 @@ jobs:
     runs-on: ubuntu-latest
     container: ${{ needs.read-toolchain.outputs.image }}
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@v4
         with:
           submodules: true
+      - run: |
+          sudo dnf -y install clang-tools-extra
       - name: Generate compilation database
         run: |
           cmake                                         \
@@ -90,7 +90,7 @@ jobs:
             | tee "$SEASTAR_BAD_INCLUDE_OUTPUT_PATH"
       - run: |
           echo "::remove-matcher owner=seastar-bad-include::"
-      - uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
+      - uses: actions/upload-artifact@v4
         with:
           name: Logs
           path: |

.github/workflows/make-pr-ready-for-review.yaml

@@ -7,7 +7,6 @@ on:
 
 env:
   DEFAULT_BRANCH: 'master'
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
 
 jobs:
   mark-ready:
@@ -18,7 +17,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@v4
         with:
           repository: ${{ github.repository }}
           ref: ${{ env.DEFAULT_BRANCH }}

.github/workflows/pr-require-backport-label.yaml

@@ -5,8 +5,6 @@ on:
     branches:
       - master
       - next
-env:
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
 jobs:
   label:
     if: github.event.pull_request.draft == false
@@ -17,7 +15,7 @@ jobs:
     steps:
       - name: Wait for label to be added
         run: sleep 1m
-      - uses: mheap/github-action-required-labels@0ac283b4e65c1fb28ce6079dea5546ceca98ccbe # v5.5.2
+      - uses: mheap/github-action-required-labels@v5
         with:
           mode: minimum
           count: 1

.github/workflows/read-toolchain.yaml

@@ -7,18 +7,13 @@ on:
         description: "the toolchain docker image"
         value: ${{ jobs.read-toolchain.outputs.image }}
 
-env:
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
-
 jobs:
   read-toolchain:
     runs-on: ubuntu-latest
-    permissions:
-      contents: read
     outputs:
       image: ${{ steps.read.outputs.image }}
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@v4
         with:
           sparse-checkout: tools/toolchain/image
           sparse-checkout-cone-mode: false

.github/workflows/seastar.yaml

@@ -13,7 +13,6 @@ concurrency:
 
 env:
   BUILD_DIR: build
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
 
 jobs:
   read-toolchain:
@@ -30,12 +29,12 @@ jobs:
           - RelWithDebInfo
           - Dev
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@v4
         with:
           submodules: true
       - run: |
           rm -rf seastar
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@v4
         with:
           repository: scylladb/seastar
           submodules: true

.github/workflows/sync-labels.yaml

@@ -7,9 +7,6 @@ on:
   issues:
     types: [labeled, unlabeled]
 
-env:
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
-
 jobs:
   label-sync:
     if: ${{ github.repository == 'scylladb/scylladb' }}
@@ -24,7 +21,7 @@ jobs:
           GITHUB_CONTEXT: ${{ toJson(github) }}
         run: echo "$GITHUB_CONTEXT"
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@v4
         with:
           sparse-checkout: |
             .github/scripts/sync_labels.py
@@ -40,13 +37,13 @@ jobs:
         run: python .github/scripts/sync_labels.py --repo ${{ github.repository }} --number ${{ github.event.number }} --action ${{ github.event.action }}
 
       - name: Pull request labeled or unlabeled event
-        if: github.event_name == 'pull_request_target' && (startsWith(github.event.label.name, 'backport/') || github.event.label.name == 'P0' || github.event.label.name == 'P1')
+        if: github.event_name == 'pull_request_target' && startsWith(github.event.label.name, 'backport/')
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: python .github/scripts/sync_labels.py --repo ${{ github.repository }} --number ${{ github.event.number }} --action ${{ github.event.action }} --label ${{ github.event.label.name }}
 
       - name: Issue labeled or unlabeled event
-        if: github.event_name == 'issues' && (startsWith(github.event.label.name, 'backport/') || github.event.label.name == 'P0' || github.event.label.name == 'P1')
+        if: github.event_name == 'issues' && startsWith(github.event.label.name, 'backport/')
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: python .github/scripts/sync_labels.py --repo ${{ github.repository }} --number ${{ github.event.issue.number }} --action ${{ github.event.action }} --is_issue --label ${{ github.event.label.name }}

.github/workflows/trigger-scylla-ci.yaml

@@ -1,66 +0,0 @@
-name: Trigger Scylla CI Route
-permissions:
-  contents: read
-
-on:
-  issue_comment:
-    types: [created]
-  pull_request_target:
-    types:
-      - unlabeled
-
-jobs:
-  trigger-jenkins:
-    if: (github.event_name == 'issue_comment' && github.event.comment.user.login != 'scylladbbot') || github.event.label.name == 'conflicts'
-    runs-on: ubuntu-latest
-    steps:
-      - name: Verify Org Membership
-        id: verify_author
-        env:
-          EVENT_NAME: ${{ github.event_name }}
-          PR_AUTHOR: ${{ github.event.pull_request.user.login }}
-          PR_ASSOCIATION: ${{ github.event.pull_request.author_association }}
-          COMMENT_AUTHOR: ${{ github.event.comment.user.login }}
-          COMMENT_ASSOCIATION: ${{ github.event.comment.author_association }}
-        shell: bash
-        run: |
-          if [[ "$EVENT_NAME" == "pull_request_target" ]]; then
-            AUTHOR="$PR_AUTHOR"
-            ASSOCIATION="$PR_ASSOCIATION"
-          else
-            AUTHOR="$COMMENT_AUTHOR"
-            ASSOCIATION="$COMMENT_ASSOCIATION"
-          fi
-          if [[ "$ASSOCIATION" == "MEMBER" || "$ASSOCIATION" == "OWNER" ]]; then
-            echo "member=true" >> $GITHUB_OUTPUT
-          else
-            echo "::warning::${AUTHOR} is not a member of scylladb (association: ${ASSOCIATION}); skipping CI trigger."
-            echo "member=false" >> $GITHUB_OUTPUT
-          fi
-
-      - name: Validate Comment Trigger
-        if: github.event_name == 'issue_comment'
-        id: verify_comment
-        env:
-          COMMENT_BODY: ${{ github.event.comment.body }}
-        shell: bash
-        run: |
-          CLEAN_BODY=$(echo "$COMMENT_BODY" | grep -v '^[[:space:]]*>')
-
-          if echo "$CLEAN_BODY" | grep -qi '@scylladbbot' && echo "$CLEAN_BODY" | grep -qi 'trigger-ci'; then
-            echo "trigger=true" >> $GITHUB_OUTPUT
-          else
-            echo "trigger=false" >> $GITHUB_OUTPUT
-          fi
-
-      - name: Trigger Scylla-CI-Route Jenkins Job
-        if: steps.verify_author.outputs.member == 'true' && (github.event_name == 'pull_request_target' || steps.verify_comment.outputs.trigger == 'true')
-        env:
-          JENKINS_USER: ${{ secrets.JENKINS_USERNAME }}
-          JENKINS_API_TOKEN: ${{ secrets.JENKINS_TOKEN }}
-          JENKINS_URL: "https://jenkins.scylladb.com"
-          PR_NUMBER: "${{ github.event.issue.number || github.event.pull_request.number }}"
-          PR_REPO_NAME: "${{ github.event.repository.full_name }}"
-        run: |
-          curl -X POST "$JENKINS_URL/job/releng/job/Scylla-CI-Route/buildWithParameters?PR_NUMBER=$PR_NUMBER&PR_REPO_NAME=$PR_REPO_NAME" \
-            --user "$JENKINS_USER:$JENKINS_API_TOKEN" --fail

.github/workflows/trigger_ci.yaml

@@ -1,245 +0,0 @@
-name: Trigger next gating
-
-on:
-  pull_request_target:
-    types: [opened, reopened, synchronize]
-  issue_comment:
-    types: [created]
-
-env:
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
-
-jobs:
-  trigger-ci:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Dump GitHub context
-        env:
-          GITHUB_CONTEXT: ${{ toJson(github) }}
-        run: echo "$GITHUB_CONTEXT"
-      - name: Checkout PR code
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-        with:
-          fetch-depth: 0  # Needed to access full history
-          ref: ${{ github.event.pull_request.head.ref }}
-
-      - name: Fetch before commit if needed
-        run: |
-          if ! git cat-file -e ${{ github.event.before }} 2>/dev/null; then
-            echo "Fetching before commit ${{ github.event.before }}"
-            git fetch --depth=1 origin ${{ github.event.before }}
-          fi
-
-      - name: Compare commits for file changes
-        if: github.action == 'synchronize'
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          echo "Base: ${{ github.event.before }}"
-          echo "Head: ${{ github.event.after }}"
-
-          TREE_BEFORE=$(git show -s --format=%T ${{ github.event.before }})
-          TREE_AFTER=$(git show -s --format=%T ${{ github.event.after }})
-          
-          echo "TREE_BEFORE=$TREE_BEFORE" >> $GITHUB_ENV
-          echo "TREE_AFTER=$TREE_AFTER" >> $GITHUB_ENV
-
-      - name: Check if last push has file changes
-        run: |
-          if [[ "${{ env.TREE_BEFORE }}" == "${{ env.TREE_AFTER }}" ]]; then
-            echo "No file changes detected in the last push, only commit message edit."
-            echo "has_file_changes=false" >> $GITHUB_ENV
-          else
-            echo "File changes detected in the last push."
-            echo "has_file_changes=true" >> $GITHUB_ENV
-          fi
-
-      - name: Rule 1 - Check PR draft or conflict status
-        run: |
-          # Check if PR is in draft mode
-          IS_DRAFT="${{ github.event.pull_request.draft }}"
-          
-          # Check if PR has 'conflict' label
-          HAS_CONFLICT_LABEL="false"
-          LABELS='${{ toJson(github.event.pull_request.labels) }}'
-          if echo "$LABELS" | jq -r '.[].name' | grep -q "^conflict$"; then
-            HAS_CONFLICT_LABEL="true"
-          fi
-          
-          # Set draft_or_conflict variable
-          if [[ "$IS_DRAFT" == "true" || "$HAS_CONFLICT_LABEL" == "true" ]]; then
-            echo "draft_or_conflict=true" >> $GITHUB_ENV
-            echo "✅ Rule 1: PR is in draft mode or has conflict label - setting draft_or_conflict=true"
-          else
-            echo "draft_or_conflict=false" >> $GITHUB_ENV
-            echo "✅ Rule 1: PR is ready and has no conflict label - setting draft_or_conflict=false"
-          fi
-          
-          echo "Draft status: $IS_DRAFT"
-          echo "Has conflict label: $HAS_CONFLICT_LABEL"
-          echo "Result: draft_or_conflict = $draft_or_conflict"
-
-      - name: Rule 2 - Check labels
-        run: |
-          # Check if PR has P0 or P1 labels
-          HAS_P0_P1_LABEL="false"
-          LABELS='${{ toJson(github.event.pull_request.labels) }}'
-          if echo "$LABELS" | jq -r '.[].name' | grep -E "^(P0|P1)$" > /dev/null; then
-            HAS_P0_P1_LABEL="true"
-          fi
-          
-          # Check if PR already has force_on_cloud label
-          echo "HAS_FORCE_ON_CLOUD_LABEL=false" >> $GITHUB_ENV
-          if echo "$LABELS" | jq -r '.[].name' | grep -q "^force_on_cloud$"; then
-            HAS_FORCE_ON_CLOUD_LABEL="true"
-            echo "HAS_FORCE_ON_CLOUD_LABEL=true" >> $GITHUB_ENV
-          fi
-          
-          echo "Has P0/P1 label: $HAS_P0_P1_LABEL"
-          echo "Has force_on_cloud label: $HAS_FORCE_ON_CLOUD_LABEL"
-          
-          # Add force_on_cloud label if PR has P0/P1 and doesn't already have force_on_cloud
-          if [[ "$HAS_P0_P1_LABEL" == "true" && "$HAS_FORCE_ON_CLOUD_LABEL" == "false" ]]; then
-            echo "✅ Rule 2: PR has P0 or P1 label - adding force_on_cloud label"
-            curl -X POST \
-              -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
-              -H "Accept: application/vnd.github.v3+json" \
-              "https://api.github.com/repos/${{ github.repository }}/issues/${{ github.event.pull_request.number }}/labels" \
-              -d '{"labels":["force_on_cloud"]}'
-          elif [[ "$HAS_P0_P1_LABEL" == "true" && "$HAS_FORCE_ON_CLOUD_LABEL" == "true" ]]; then
-            echo "✅ Rule 2: PR has P0 or P1 label and already has force_on_cloud label - no action needed"
-          else
-            echo "✅ Rule 2: PR does not have P0 or P1 label - no force_on_cloud label needed"
-          fi
-
-          SKIP_UNIT_TEST_CUSTOM="false"
-          if echo "$LABELS" | jq -r '.[].name' | grep -q "^ci/skip_unit-tests_custom$"; then
-            SKIP_UNIT_TEST_CUSTOM="true"
-          fi
-          echo "SKIP_UNIT_TEST_CUSTOM=$SKIP_UNIT_TEST_CUSTOM" >> $GITHUB_ENV
-
-      - name: Rule 3 - Analyze changed files and set build requirements
-        run: |
-          # Get list of changed files
-          CHANGED_FILES=$(git diff --name-only ${{ github.event.pull_request.base.sha }} ${{ github.event.pull_request.head.sha }})
-          echo "Changed files:"
-          echo "$CHANGED_FILES"
-          echo ""
-          
-          # Initialize all requirements to false
-          REQUIRE_BUILD="false"
-          REQUIRE_DTEST="false"
-          REQUIRE_UNITTEST="false"
-          REQUIRE_ARTIFACTS="false"
-          REQUIRE_SCYLLA_GDB="false"
-          
-          # Check each file against patterns
-          while IFS= read -r file; do
-            if [[ -n "$file" ]]; then
-              echo "Checking file: $file"
-              
-              # Build pattern: ^(?!scripts\/pull_github_pr.sh).*$
-              # Everything except scripts/pull_github_pr.sh
-              if [[ "$file" != "scripts/pull_github_pr.sh" ]]; then
-                REQUIRE_BUILD="true"
-                echo "  ✓ Matches build pattern"
-              fi
-              
-              # Dtest pattern: ^(?!test(.py|\/)|dist\/docker\/|dist\/common\/scripts\/).*$
-              # Everything except test files, dist/docker/, dist/common/scripts/
-              if [[ ! "$file" =~ ^test\.(py|/).*$ ]] && [[ ! "$file" =~ ^dist/docker/.*$ ]] && [[ ! "$file" =~ ^dist/common/scripts/.*$ ]]; then
-                REQUIRE_DTEST="true"
-                echo "  ✓ Matches dtest pattern"
-              fi
-              
-              # Unittest pattern: ^(?!dist\/docker\/|dist\/common\/scripts).*$
-              # Everything except dist/docker/, dist/common/scripts/
-              if [[ ! "$file" =~ ^dist/docker/.*$ ]] && [[ ! "$file" =~ ^dist/common/scripts.*$ ]]; then
-                REQUIRE_UNITTEST="true"
-                echo "  ✓ Matches unittest pattern"
-              fi
-              
-              # Artifacts pattern: ^(?:dist|tools\/toolchain).*$
-              # Files starting with dist or tools/toolchain
-              if [[ "$file" =~ ^dist.*$ ]] || [[ "$file" =~ ^tools/toolchain.*$ ]]; then
-                REQUIRE_ARTIFACTS="true"
-                echo "  ✓ Matches artifacts pattern"
-              fi
-              
-              # Scylla GDB pattern: ^(scylla-gdb.py).*$
-              # Files starting with scylla-gdb.py
-              if [[ "$file" =~ ^scylla-gdb\.py.*$ ]]; then
-                REQUIRE_SCYLLA_GDB="true"
-                echo "  ✓ Matches scylla_gdb pattern"
-              fi
-            fi
-          done <<< "$CHANGED_FILES"
-          
-          # Set environment variables
-          echo "requireBuild=$REQUIRE_BUILD" >> $GITHUB_ENV
-          echo "requireDtest=$REQUIRE_DTEST" >> $GITHUB_ENV
-          echo "requireUnittest=$REQUIRE_UNITTEST" >> $GITHUB_ENV
-          echo "requireArtifacts=$REQUIRE_ARTIFACTS" >> $GITHUB_ENV
-          echo "requireScyllaGdb=$REQUIRE_SCYLLA_GDB" >> $GITHUB_ENV
-          
-          echo ""
-          echo "✅ Rule 3: File analysis complete"
-          echo "Build required: $REQUIRE_BUILD"
-          echo "Dtest required: $REQUIRE_DTEST"
-          echo "Unittest required: $REQUIRE_UNITTEST"
-          echo "Artifacts required: $REQUIRE_ARTIFACTS"
-          echo "Scylla GDB required: $REQUIRE_SCYLLA_GDB"
-
-      - name: Determine Jenkins Job Name
-        run: |
-          if [[ "${{ github.ref_name }}" == "next" ]]; then
-            FOLDER_NAME="scylla-master"
-          elif [[ "${{ github.ref_name }}" == "next-enterprise" ]]; then
-            FOLDER_NAME="scylla-enterprise"
-          else
-            VERSION=$(echo "${{ github.ref_name }}" | awk -F'-' '{print $2}')
-            if [[ "$VERSION" =~ ^202[0-4]\.[0-9]+$ ]]; then
-              FOLDER_NAME="enterprise-$VERSION"
-            elif [[ "$VERSION" =~ ^[0-9]+\.[0-9]+$ ]]; then
-              FOLDER_NAME="scylla-$VERSION"
-            fi
-          fi
-          echo "JOB_NAME=${FOLDER_NAME}/job/scylla-ci" >> $GITHUB_ENV
-
-      - name: Trigger Jenkins Job
-        if: env.draft_or_conflict == 'false' && env.has_file_changes == 'true' && github.action == 'opened' || github.action == 'reopened'
-        env:
-          JENKINS_USER: ${{ secrets.JENKINS_USERNAME }}
-          JENKINS_API_TOKEN: ${{ secrets.JENKINS_TOKEN }}
-          JENKINS_URL: "https://jenkins.scylladb.com"
-          SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
-        run: |
-          PR_NUMBER=${{ github.event.issue.number }}
-          PR_REPO_NAME=${{ github.event.repository.full_name }}
-          echo "Triggering Jenkins Job: $JOB_NAME"
-          curl -X POST \
-            "$JENKINS_URL/job/$JOB_NAME/buildWithParameters? \
-            PR_NUMBER=$PR_NUMBER& \
-            RUN_DTEST=$REQUIRE_DTEST& \
-            RUN_ONLY_SCYLLA_GDB=$REQUIRE_SCYLLA_GDB& \
-            RUN_UNIT_TEST=$REQUIRE_UNITTEST& \
-            FORCE_ON_CLOUD=$HAS_FORCE_ON_CLOUD_LABEL& \
-            SKIP_UNIT_TEST_CUSTOM=$SKIP_UNIT_TEST_CUSTOM& \
-            RUN_ARTIFACT_TESTS=$REQUIRE_ARTIFACTS" \
-            --fail \
-            --user "$JENKINS_USER:$JENKINS_API_TOKEN" \
-            -i -v
-  trigger-ci-via-comment:
-    if: github.event.comment.user.login != 'scylladbbot' && contains(github.event.comment.body, '@scylladbbot') && contains(github.event.comment.body, 'trigger-ci')
-    runs-on: ubuntu-latest
-    steps:
-      - name: Trigger Scylla-CI Jenkins Job
-        env:
-          JENKINS_USER: ${{ secrets.JENKINS_USERNAME }}
-          JENKINS_API_TOKEN: ${{ secrets.JENKINS_TOKEN }}
-          JENKINS_URL: "https://jenkins.scylladb.com"
-        run: |
-          PR_NUMBER=${{ github.event.issue.number }}
-          PR_REPO_NAME=${{ github.event.repository.full_name }}
-          curl -X POST "$JENKINS_URL/job/$JOB_NAME/buildWithParameters?PR_NUMBER=$PR_NUMBER" \
-          --user "$JENKINS_USER:$JENKINS_API_TOKEN" --fail -i -v

.github/workflows/trigger_jenkins.yaml

@@ -1,8 +1,5 @@
 name: Trigger next gating
 
-permissions:
-  contents: read
-
 on:
   push:
     branches:

.github/workflows/urgent_issue_reminder.yml

@@ -2,10 +2,7 @@ name: Urgent Issue Reminder
 
 on:
   schedule:
-    - cron: '10 8 * * *' # Runs daily at 8 AM
-
-env:
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
+    - cron: '10 8 * * 1' # Runs every Monday at 8 AM
 
 jobs:
   reminder:
@@ -13,7 +10,7 @@ jobs:
 
     steps:
     - name: Send reminders
-      uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
+      uses: actions/github-script@v7
       with:
         script: |
           const labelFilters = ['P0', 'P1', 'Field-Tier1','status/release blocker', 'status/regression']; 

.gitignore

@@ -35,5 +35,3 @@ compile_commands.json
 .envrc
 clang_build
 .idea/
-nuke
-rust/target

AGENTS.md

@@ -1,16 +0,0 @@
-# ScyllaDB — AI Agent Instructions
-
-This file routes you to the relevant instruction files.
-Do NOT load all files at once — read only what applies to your current task.
-
-## Instruction Files
-
-- `.github/copilot-instructions.md` — build system, test runner, code philosophy, test philosophy
-- `.github/instructions/cpp.instructions.md` — C++ style, Seastar patterns, memory, error handling (for `*.cc`, `*.hh`)
-- `.github/instructions/python.instructions.md` — Python style, testing conventions (for `*.py`)
-
-## Which files to read
-
-- **Always read** `.github/copilot-instructions.md` for build/test commands and project values
-- **If editing C++ files** (`*.cc`, `*.hh`): also read `.github/instructions/cpp.instructions.md`
-- **If editing Python files** (`*.py`): also read `.github/instructions/python.instructions.md`

CMakeLists.txt

@@ -2,12 +2,6 @@ cmake_minimum_required(VERSION 3.27)
 
 project(scylla)
 
-# Disable CMake's automatic -fcolor-diagnostics injection (CMake 3.24+ adds
-# it for Clang+Ninja). configure.py does not add any color diagnostics flags,
-# so we clear the internal CMake variable to prevent injection.
-set(CMAKE_CXX_COMPILE_OPTIONS_COLOR_DIAGNOSTICS "")
-set(CMAKE_C_COMPILE_OPTIONS_COLOR_DIAGNOSTICS "")
-
 list(APPEND CMAKE_MODULE_PATH
   ${CMAKE_CURRENT_SOURCE_DIR}/cmake
   ${CMAKE_CURRENT_SOURCE_DIR}/seastar/cmake)
@@ -55,17 +49,7 @@ include(limit_jobs)
 set(CMAKE_CXX_STANDARD "23" CACHE INTERNAL "")
 set(CMAKE_CXX_EXTENSIONS ON CACHE INTERNAL "")
 set(CMAKE_CXX_SCAN_FOR_MODULES OFF CACHE INTERNAL "")
-set(CMAKE_VISIBILITY_INLINES_HIDDEN ON)
-
-# Global defines matching configure.py
-# Since gcc 13, libgcc doesn't need the exception workaround
-add_compile_definitions(SEASTAR_NO_EXCEPTION_HACK)
-# Hacks needed to expose internal APIs for xxhash dependencies
-add_compile_definitions(XXH_PRIVATE_API)
-# SEASTAR_TESTING_MAIN is added later (after add_subdirectory(seastar) and
-# add_subdirectory(abseil)) to avoid leaking into the seastar subdirectory.
-# If SEASTAR_TESTING_MAIN is defined globally before seastar, it causes a
-# duplicate 'main' symbol in seastar_testing.
+set(CMAKE_CXX_VISIBILITY_PRESET hidden)
 
 if(is_multi_config)
     find_package(Seastar)
@@ -106,39 +90,18 @@ if(is_multi_config)
     add_dependencies(Seastar::seastar_testing Seastar)
 else()
     set(Seastar_TESTING ON CACHE BOOL "" FORCE)
-    set(Seastar_API_LEVEL 9 CACHE STRING "" FORCE)
+    set(Seastar_API_LEVEL 7 CACHE STRING "" FORCE)
     set(Seastar_DEPRECATED_OSTREAM_FORMATTERS OFF CACHE BOOL "" FORCE)
     set(Seastar_APPS ON CACHE BOOL "" FORCE)
     set(Seastar_EXCLUDE_APPS_FROM_ALL ON CACHE BOOL "" FORCE)
     set(Seastar_EXCLUDE_TESTS_FROM_ALL ON CACHE BOOL "" FORCE)
     set(Seastar_IO_URING ON CACHE BOOL "" FORCE)
-    set(Seastar_SCHEDULING_GROUPS_COUNT 24 CACHE STRING "" FORCE)
+    set(Seastar_SCHEDULING_GROUPS_COUNT 19 CACHE STRING "" FORCE)
     set(Seastar_UNUSED_RESULT_ERROR ON CACHE BOOL "" FORCE)
-    # Match configure.py's build_seastar_shared_libs: Debug and Dev
-    # build Seastar as a shared library, others build it static.
-    if(CMAKE_BUILD_TYPE STREQUAL "Debug" OR CMAKE_BUILD_TYPE STREQUAL "Dev")
-        set(BUILD_SHARED_LIBS ON CACHE BOOL "" FORCE)
-    else()
-        set(BUILD_SHARED_LIBS OFF CACHE BOOL "" FORCE)
-    endif()
     add_subdirectory(seastar)
-
-    # Coverage mode sets cmake_build_type='Debug' for Seastar
-    # (configure.py:515), so Seastar's pkg-config output includes sanitizer
-    # link flags in seastar_libs_coverage (configure.py:2514,2649).
-    # Seastar's own CMake only activates sanitizer targets for Debug/Sanitize
-    # configs, so we inject link options on the seastar target for Coverage.
-    # Using PUBLIC ensures they propagate to all targets linking Seastar
-    # (but not standalone tools like patchelf), matching configure.py's
-    # behavior.  Compile-time flags and defines are handled globally in
-    # cmake/mode.Coverage.cmake.
-    if(CMAKE_BUILD_TYPE STREQUAL "Coverage")
-        target_link_options(seastar
-            PUBLIC
-                -fsanitize=address
-                -fsanitize=undefined
-                -fsanitize=vptr)
-    endif()
+    target_compile_definitions (seastar
+      PRIVATE
+        SEASTAR_NO_EXCEPTION_HACK)
 endif()
 
 set(ABSL_PROPAGATE_CXX_STD ON CACHE BOOL "" FORCE)
@@ -148,14 +111,11 @@ if(Scylla_ENABLE_LTO)
 endif()
 
 find_package(Sanitizers QUIET)
-# Match configure.py:2192 — abseil gets sanitizer flags with -fno-sanitize=vptr
-# to exclude vptr checks which are incompatible with abseil's usage.
 list(APPEND absl_cxx_flags
-    $<$<CONFIG:Debug,Sanitize>:$<TARGET_PROPERTY:Sanitizers::address,INTERFACE_COMPILE_OPTIONS>;$<TARGET_PROPERTY:Sanitizers::undefined_behavior,INTERFACE_COMPILE_OPTIONS>;-fno-sanitize=vptr>)
+    $<$<CONFIG:Debug,Sanitize>:$<TARGET_PROPERTY:Sanitizers::address,INTERFACE_COMPILE_OPTIONS>;$<TARGET_PROPERTY:Sanitizers::undefined_behavior,INTERFACE_COMPILE_OPTIONS>>)
 if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
     list(APPEND ABSL_GCC_FLAGS ${absl_cxx_flags})
 elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
-    list(APPEND absl_cxx_flags "-Wno-deprecated-builtins")
     list(APPEND ABSL_LLVM_FLAGS ${absl_cxx_flags})
 endif()
 set(ABSL_DEFAULT_LINKOPTS
@@ -176,38 +136,9 @@ add_library(absl::headers ALIAS absl-headers)
 # unfortunately.
 set_target_properties(absl_strerror PROPERTIES EXCLUDE_FROM_ALL TRUE)
 
-# Now that seastar and abseil subdirectories are fully processed, add
-# SEASTAR_TESTING_MAIN globally. This matches configure.py's global define
-# without leaking into seastar (which would cause duplicate main symbols).
-add_compile_definitions(SEASTAR_TESTING_MAIN)
-
 # System libraries dependencies
 find_package(Boost REQUIRED
     COMPONENTS filesystem program_options system thread regex unit_test_framework)
-# When using shared Boost libraries, define BOOST_ALL_DYN_LINK (matching configure.py)
-if(NOT Boost_USE_STATIC_LIBS)
-    add_compile_definitions(BOOST_ALL_DYN_LINK)
-endif()
-
-# CMake's Boost package config adds per-component defines like
-# BOOST_UNIT_TEST_FRAMEWORK_DYN_LINK, BOOST_REGEX_DYN_LINK, etc. on the
-# imported targets. configure.py only uses BOOST_ALL_DYN_LINK (which covers
-# all components), so strip the per-component defines to align the two build
-# systems.
-foreach(_boost_target
-    Boost::unit_test_framework
-    Boost::regex
-    Boost::filesystem
-    Boost::program_options
-    Boost::system
-    Boost::thread)
-  if(TARGET ${_boost_target})
-    # Completely remove all INTERFACE_COMPILE_DEFINITIONS from the Boost target.
-    # This prevents per-component *_DYN_LINK and *_NO_LIB defines from
-    # propagating. BOOST_ALL_DYN_LINK (set globally) covers all components.
-    set_property(TARGET ${_boost_target} PROPERTY INTERFACE_COMPILE_DEFINITIONS)
-  endif()
-endforeach()
 target_link_libraries(Boost::regex
   INTERFACE
     ICU::i18n
@@ -232,70 +163,38 @@ file(MAKE_DIRECTORY "${scylla_gen_build_dir}")
 include(add_version_library)
 generate_scylla_version()
 
-option(Scylla_USE_PRECOMPILED_HEADER "Use precompiled header for Scylla" ON)
-add_library(scylla-precompiled-header STATIC exported_templates.cc)
-target_link_libraries(scylla-precompiled-header PRIVATE
-    absl::headers
-    absl::btree
-    absl::hash
-    absl::raw_hash_set
-    Seastar::seastar
-    Snappy::snappy
-    systemd
-    ZLIB::ZLIB
-    lz4::lz4_static
-    zstd::zstd_static)
-if (Scylla_USE_PRECOMPILED_HEADER)
-  set(Scylla_USE_PRECOMPILED_HEADER_USE ON)
-  find_program(DISTCC_EXEC NAMES distcc OPTIONAL)
-  if (DISTCC_EXEC)
-    if(DEFINED ENV{DISTCC_HOSTS})
-      set(Scylla_USE_PRECOMPILED_HEADER_USE OFF)
-      message(STATUS "Disabling precompiled header usage because distcc exists and DISTCC_HOSTS is set, assuming you're using distributed compilation.")
-    else()
-      file(REAL_PATH "~/.distcc/hosts" DIST_CC_HOSTS_PATH EXPAND_TILDE)
-      if (EXISTS ${DIST_CC_HOSTS_PATH})
-        set(Scylla_USE_PRECOMPILED_HEADER_USE OFF)
-        message(STATUS "Disabling precompiled header usage because distcc and ~/.distcc/hosts exists, assuming you're using distributed compilation.")
-      endif()
-    endif()
-  endif()
-  if (Scylla_USE_PRECOMPILED_HEADER_USE)
-    message(STATUS "Using precompiled header for Scylla - remember to add `sloppiness = pch_defines,time_macros` to ccache.conf, if you're using ccache.")
-    target_precompile_headers(scylla-precompiled-header PRIVATE "stdafx.hh")
-    target_compile_definitions(scylla-precompiled-header PRIVATE SCYLLA_USE_PRECOMPILED_HEADER)
-    # Match configure.py: -fpch-validate-input-files-content tells the compiler
-    # to check content of stdafx.hh if timestamps don't match (important for
-    # ccache/git workflows where timestamps may not be preserved).
-    add_compile_options(-fpch-validate-input-files-content)
-  endif()
-else()
-  set(Scylla_USE_PRECOMPILED_HEADER_USE OFF)
-endif()
-
 add_library(scylla-main STATIC)
-
 target_sources(scylla-main
   PRIVATE
     absl-flat_hash_map.cc
     bytes.cc
     client_data.cc
     clocks-impl.cc
+    collection_mutation.cc
+    compress.cc
+    converting_mutation_partition_applier.cc
+    counters.cc
     sstable_dict_autotrainer.cc
+    duration.cc
     exceptions/exceptions.cc
+    frozen_schema.cc
+    generic_server.cc
     debug.cc
     init.cc
-    keys/keys.cc
+    keys.cc
+    multishard_mutation_query.cc
     mutation_query.cc
     node_ops/task_manager_module.cc
     partition_slice_builder.cc
-    query/query.cc
+    querier.cc
+    query.cc
     query_ranges_to_vnodes.cc
-    query/query-result-set.cc
+    query-result-set.cc
     tombstone_gc_options.cc
     tombstone_gc.cc
     reader_concurrency_semaphore.cc
     reader_concurrency_semaphore_group.cc
+    schema_mutations.cc
     serializer.cc
     service/direct_failure_detector/failure_detector.cc
     sstables_loader.cc
@@ -319,7 +218,6 @@ target_link_libraries(scylla-main
     ZLIB::ZLIB
     lz4::lz4_static
     zstd::zstd_static
-    scylla-precompiled-header
 )
 
 option(Scylla_CHECK_HEADERS
@@ -372,7 +270,9 @@ add_subdirectory(locator)
 add_subdirectory(message)
 add_subdirectory(mutation)
 add_subdirectory(mutation_writer)
+add_subdirectory(node_ops)
 add_subdirectory(readers)
+add_subdirectory(redis)
 add_subdirectory(replica)
 add_subdirectory(raft)
 add_subdirectory(repair)
@@ -387,7 +287,6 @@ add_subdirectory(tracing)
 add_subdirectory(transport)
 add_subdirectory(types)
 add_subdirectory(utils)
-add_subdirectory(vector_search)
 add_version_library(scylla_version
     release.cc)
 
@@ -417,6 +316,7 @@ set(scylla_libs
     mutation_writer
     raft
     readers
+    redis
     repair
     replica
     schema
@@ -429,8 +329,7 @@ set(scylla_libs
     tracing
     transport
     types
-    utils
-    vector_search)
+    utils)
 target_link_libraries(scylla PRIVATE
     ${scylla_libs})
 

CONTRIBUTING.md

@@ -12,7 +12,7 @@ Please use the [issue tracker](https://github.com/scylladb/scylla/issues/) to re
 
 ## Contributing code to Scylla
 
-Before you can contribute code to Scylla for the first time, you should sign the [Contributor License Agreement](https://www.scylladb.com/open-source/contributor-agreement/) and send the signed form to cla@scylladb.com. You can then submit your changes as patches to the [scylladb-dev mailing list](https://groups.google.com/forum/#!forum/scylladb-dev) or as a pull request to the [Scylla project on github](https://github.com/scylladb/scylla).
+Before you can contribute code to Scylla for the first time, you should sign the [Contributor License Agreement](https://www.scylladb.com/open-source/contributor-agreement/) and send the signed form cla@scylladb.com. You can then submit your changes as patches to the [scylladb-dev mailing list](https://groups.google.com/forum/#!forum/scylladb-dev) or as a pull request to the [Scylla project on github](https://github.com/scylladb/scylla).
 If you need help formatting or sending patches, [check out these instructions](https://github.com/scylladb/scylla/wiki/Formatting-and-sending-patches).
 
 The Scylla C++ source code uses the [Seastar coding style](https://github.com/scylladb/seastar/blob/master/coding-style.md) so please adhere to that in your patches. Note that Scylla code is written with `using namespace seastar`, so should not explicitly add the `seastar::` prefix to Seastar symbols. You will usually not need to add `using namespace seastar` to new source files, because most Scylla header files have `#include "seastarx.hh"`, which does this.

HACKING.md

@@ -43,7 +43,7 @@ $ ./tools/toolchain/dbuild ninja build/release/scylla
 $ ./tools/toolchain/dbuild ./build/release/scylla --developer-mode 1
 ```
 
-Note: do not mix environments - either perform all your work with dbuild, or natively on the host.
+Note: do not mix environemtns - either perform all your work with dbuild, or natively on the host.
 Note2: you can get to an interactive shell within dbuild by running it without any parameters:
 ```bash
 $ ./tools/toolchain/dbuild
@@ -91,7 +91,7 @@ You can also specify a single mode. For example
 $ ninja-build release
 ```
 
-Will build everything in release mode. The valid modes are
+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
@@ -361,7 +361,7 @@ avoid that the gold linker can be told to create an index with
 
 More info at https://gcc.gnu.org/wiki/DebugFission.
 
-Both options can be enabled by passing `--split-dwarf` to configure.py.
+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.
@@ -370,7 +370,7 @@ Note that distcc is *not* compatible with it, but icecream
 
 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.
 
-One way to do this is to create a local remote for the Seastar submodule in the Scylla repository:
+One way to do this it to create a local remote for the Seastar submodule in the Scylla repository:
 
 ```bash
 $ cd $HOME/src/scylla

LICENSE-ScyllaDB-Source-Available.md

@@ -1,8 +1,8 @@
 ## **SCYLLADB SOFTWARE LICENSE AGREEMENT**
 
-| Version: | 1.1 |
+| Version: | 1.0 |
 | :---- | :---- |
-| Last updated: | April 12, 2026 |
+| Last updated: | December 18, 2024 |
 
 **Your Acceptance**
 
@@ -12,48 +12,20 @@ The terms "**You**" or "**Licensee**" refer to any individual accessing or using
 
 **Grant of License**
 
-* **Definitions:**
-  1. **Software:** Software means the ScyllaDB software provided by Licensor, including the source code, object code, and any accompanying documentation or tools, or any part thereof, as made available under this Agreement.
-  2. **Commercial Customer**: means any legal entity (including its Affiliates) that has entered into a transaction with Licensor, or an authorized reseller/distributor, for the provision of any ScyllaDB products or services. This includes, without limitation:  (a) Scope of Service: Any paid subscription, enterprise license, "BYOA" or Database-as-a-Service (DBaaS) offering, technical support, professional services, consulting, or training. (b) Scale and Volume: Any deployment regardless of size, capacity, or performance metrics (c) Payment Method: Any compensation model, including but not limited to, fixed-fee, consumption-based (On-Demand), committed spend, third-party marketplace credits (e.g., AWS, GCP, Azure), or promotional credits and discounts.
-* **Grant of License:** Subject to the terms and conditions of this Agreement, including the Eligibility and Exclusive Use Restrictions clause, Licensor grants You a limited, non-exclusive, revocable, non-sublicensable, non-transferable, royalty free license to Use the Software, in each case solely for the purposes of:
+* **Software Definitions:** Software means the ScyllaDB software provided by Licensor, including the source code, object code, and any accompanying documentation or tools, or any part thereof, as made available under this Agreement.
+* **Grant of License:** Subject to the terms and conditions of this Agreement, Licensor grants You a limited, non-exclusive, revocable, non-sublicensable, non-transferable, royalty free license to Use the Software, in each case solely for the purposes of:
   1) Copying, distributing, evaluating (including performing benchmarking or comparative tests or evaluations , subject to the limitations below) and improving the Software and ScyllaDB; and
   2) create a modified version of the Software (each, a "**Licensed Work**"); provided however, that each such Licensed Work keeps all or substantially all of the functions and features of the Software, and/or using all or substantially all of the source code of the Software. You hereby agree that all the Licensed Work are, upon creation, considered Licensed Work of the Licensor, shall be the sole property of the Licensor and its assignees, and the Licensor and its assignees shall be the sole owner of all rights of any kind or nature, in connection with such Licensed Work. You hereby irrevocably and unconditionally assign to the Licensor all the Licensed Work and any part thereof.  This License applies separately for each version of the Licensed Work, which shall be considered "Software" for the purpose of this Agreement.
 
-* **Eligibility and Exclusive Use Restrictions**
 
-i. 	Restricted to "Never Customers" Only. The license granted under this Agreement is strictly limited to Never Customers. For purposes of this Agreement, a "Never Customer" is an entity (including its Affiliates) that does not have, and has not had within the previous twelve (12) months, a paid commercial subscription, professional services agreement, or any other commercial relationship with Licensor. Satisfaction of the Never Customer criteria is a strict condition precedent to the effectiveness of this License. 
-
-ii. 	Total Prohibition for Existing Commercial Customers. If You (or any of Your Affiliates) are an existing Commercial Customer of Licensor within the last twelve (12) months, no license is deemed to have been offered or extended to You, and any download or installation of the Software by You is unauthorized. This prohibition applies to all deployments, including but not limited to:
-
-(a) existing commercial workloads;
-
-(b) any new use cases, new applications, or new workloads
-
-iii. **No "Hybrid" Usage**. Licensee is expressly prohibited from combining free tier usage under this Agreement with paid commercial units. 
-
-If You are a Commercial Customer, all use of the Software across Your entire organization (and any of your Affiliates) must be governed by a valid, paid commercial agreement. Use of the Software under this license by a Commercial Customer (which is not a "Never Customer") shall:
-
-(a) Void this license *ab initio*;
-
-(b) Be deemed a material breach of both this Agreement and any existing commercial terms; and
-
-(c) Entitle Licensor to invoice Licensee for such unauthorized usage at Licensor's standard list prices, retroactive to the date of first use.
-
-Notwithstanding anything to the contrary in the Eligibility or License Limitations sections above a Commercial Customer may use the Software exclusively for non-production purposes, including Continuous Integration (CI), automated testing, and quality assurance environments, provided that such use at all times remains compliant with the Usage Limit.
-
-iv. **Verification**. Licensor reserves the right to audit Licensee's environment and corporate identity to ensure compliance with these eligibility criteria.
-
-For the purposes of this Agreement an "**Affiliate**" means any entity that directly or indirectly controls, is controlled by, or is under common control with a party, where "control" means ownership of more than 50% of the voting stock or decision-making authority
-
-
-**License Limitations, Restrictions and Obligations:** The license grant above is subject to the following limitations, restrictions, and obligations. If Licensee’s Use of the Software does not comply with the above license grant or the terms of this section (including exceeding the Usage Limit set forth below), Licensee must: (i) refrain from any Use of the Software; and (ii) unless Licensee is a Never Customer, purchase a [commercial paid license](https://www.scylladb.com/scylladb-proprietary-software-license-agreement/) from the Licensor.
+**License Limitations, Restrictions and Obligations:** The license grant above is subject to the following limitations, restrictions, and obligations. If Licensee’s Use of the Software does not comply with the above license grant or the terms of this section (including exceeding the Usage Limit set forth below), Licensee must: (i) refrain from any Use of the Software; and (ii) purchase a [commercial paid license](https://www.scylladb.com/scylladb-proprietary-software-license-agreement/) from the Licensor.
 
 * **Updates:** You shall be solely responsible for providing all equipment, systems, assets, access, and ancillary goods and services needed to access and Use the Software.  Licensor may modify or update the Software at any time, without notification, in its sole and absolute discretion.  After the effective date of each such update, Licensor shall bear no obligation to run, provide or support legacy versions of the Software.
 * **"Usage Limit":** Licensee's total overall available storage across all deployments and clusters of the Software and the Licensed Work under this License shall not exceed 10TB and/or an upper limit of 50 VCPUs (hyper threads).
 * **IP Markings:** Licensee must retain all copyright, trademark, and other proprietary notices contained in the Software. You will not modify, delete, alter, remove, or obscure any intellectual property, including without limitations licensing, copyright, trademark, or any other notices of Licensor in the Software.
 * **License Reproduction:** You must conspicuously display this Agreement on each copy of the Software. If You receive the Software from a third party, this Agreement still applies to Your Use of the Software. You will be responsible for any breach of this Agreement by any such third-party.
 * Distribution of any Licensed Works is permitted, provided that: (i) You must include in any Licensed Work prominent notices stating that You have modified the Software, (ii) You include a copy of this Agreement with the Licensed Work, and (iii) You clearly identify all modifications made in the Licensed Work and provides attribution to the Licensor as the original author(s) of the Software.
-* **Commercial Use Restrictions:** Licensee may not offer the Software as a software-as-a-service (SaaS) or commercial database-as-as-service (dBaaS) offering.  Licensee may not use the Software to compete with Licensor's existing or future products or services. If your Use of the Software does not comply with the requirements currently in effect as described in this License, you must purchase a commercial license from the Licensor, its Affiliated entities, or you must refrain from using the Software and all Licensed Work. Furthermore, if You make any written claim of patent infringement relating to the Software, Your patent license for the Software granted under this Agreement terminates immediately.
+* **Commercial Use Restrictions:** Licensee may not offer the Software as a software-as-a-service (SaaS) or commercial database-as-as-service (dBaaS) offering.  Licensee may not use the Software to compete with Licensor's existing or future products or services. If your Use of the Software does not comply with the requirements currently in effect as described in this License, you must purchase a commercial license from the Licensor, its affiliated entities, or you must refrain from using the Software and all Licensed Work. Furthermore, if You make any written claim of patent infringement relating to the Software, Your patent license for the Software granted under this Agreement terminates immediately.
 * Notwithstanding anything to the contrary, under the License granted hereunder, You shall not and shall not permit others to: (i) transfer the Software or any portions thereof to any other party except as expressly permitted herein; (ii) attempt to circumvent or overcome any technological protection measures incorporated into the Software; (iii) incorporate the Software into the structure, machinery or controls of any aircraft, other aerial device, military vehicle, hovercraft, waterborne craft or any medical equipment of any kind; or (iv) use the Software or any part thereof in any unlawful, harmful or illegal manner, or in a manner which infringes third parties’ rights in any way, including intellectual property rights.
 
 **Monitoring; Audit**
@@ -69,14 +41,14 @@ For the purposes of this Agreement an "**Affiliate**" means any entity that dire
 
 **Indemnity; Disclaimer; Limitation of Liability**
 
-* **Indemnity:** Licensee hereby agrees to indemnify, defend and hold harmless Licensor and its Affiliates from any losses or damages incurred due to a third party claim arising out of: (i) Licensee’s breach of this Agreement; (ii) Licensee’s negligence, willful misconduct or violation of law, or (iii) Licensee’s products or services.
+* **Indemnity:** Licensee hereby agrees to indemnify, defend and hold harmless Licensor and its affiliates from any losses or damages incurred due to a third party claim arising out of: (i) Licensee’s breach of this Agreement; (ii) Licensee’s negligence, willful misconduct or violation of law, or (iii) Licensee’s products or services.
 * DISCLAIMER OF WARRANTIES:  LICENSEE AGREES THAT LICENSOR HAS MADE NO EXPRESS WARRANTIES REGARDING THE SOFTWARE AND THAT THE SOFTWARE IS BEING PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. LICENSOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THE SOFTWARE, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE; TITLE; MERCHANTABILITY;  OR NON-INFRINGEMENT OF THIRD PARTY RIGHTS. LICENSOR DOES NOT WARRANT THAT THE SOFTWARE WILL OPERATE UNINTERRUPTED OR ERROR FREE, OR THAT ALL ERRORS WILL BE CORRECTED.  LICENSOR DOES NOT GUARANTEE ANY PARTICULAR RESULTS FROM THE USE OF THE SOFTWARE, AND DOES NOT WARRANT THAT THE SOFTWARE IS FIT FOR ANY PARTICULAR PURPOSE.
 * LIMITATION OF LIABILITY:  TO THE FULLEST EXTENT PERMISSIBLE UNDER APPLICABLE LAW, IN NO EVENT WILL LICENSOR AND/OR ITS AFFILIATES, EMPLOYEES, OFFICERS AND DIRECTORS BE LIABLE TO LICENSEE FOR (I) ANY LOSS OF USE OR DATA; INTERRUPTION OF BUSINESS; OR ANY INDIRECT; SPECIAL; INCIDENTAL; OR CONSEQUENTIAL DAMAGES OF ANY KIND (INCLUDING LOST PROFITS); AND (II) ANY DIRECT DAMAGES EXCEEDING THE TOTAL AMOUNT OF ONE THOUSAND US DOLLARS ($1,000).  THE FOREGOING PROVISIONS LIMITING THE LIABILITY OF LICENSOR SHALL APPLY REGARDLESS OF THE FORM OR CAUSE OF ACTION, WHETHER IN STRICT LIABILITY, CONTRACT OR TORT.
 
 **Proprietary Rights; No Other Rights**
 
 * **Ownership:** Licensor retains sole and exclusive ownership of all rights, interests and title in the Software and any scripts, processes, techniques, methodologies, inventions, know-how, concepts, formatting, arrangements, visual attributes, ideas, database rights, copyrights, patents, trade secrets, and other intellectual property related thereto, and all derivatives, enhancements, modifications and improvements thereof. Except for the limited license rights granted herein, Licensee has no rights in or to the Software and/ or Licensor’s trademarks, logo, or branding and You acknowledge that such Software, trademarks, logo, or branding is the sole property of Licensor.
-* **Feedback:** Licensee is not required to provide any suggestions, enhancement requests, recommendations or other feedback regarding the Software ("Feedback").  If, notwithstanding this policy, Licensee submits Feedback, Licensee understands and acknowledges that such Feedback is not submitted in confidence and Licensor assumes no obligation, expressed or implied, by considering it.  All right in any trademark or logo of Licensor or its Affiliates and You shall make no claim of right to the Software or any part thereof to be supplied by Licensor hereunder and acknowledges that as between Licensor and You, such Software is the sole proprietary, title and interest in and to Licensor.such Feedback shall be assigned to, and shall become the sole and exclusive property of, Licensor upon its creation.
+* **Feedback:** Licensee is not required to provide any suggestions, enhancement requests, recommendations or other feedback regarding the Software ("Feedback").  If, notwithstanding this policy, Licensee submits Feedback, Licensee understands and acknowledges that such Feedback is not submitted in confidence and Licensor assumes no obligation, expressed or implied, by considering it.  All right in any trademark or logo of Licensor or its affiliates and You shall make no claim of right to the Software or any part thereof to be supplied by Licensor hereunder and acknowledges that as between Licensor and You, such Software is the sole proprietary, title and interest in and to Licensor.such Feedback shall be assigned to, and shall become the sole and exclusive property of, Licensor upon its creation.
 * Except for the rights expressly granted to You under this Agreement, You are not granted any other licenses or rights in the Software or otherwise. This Agreement constitutes the entire agreement between You and the Licensor with respect to the subject matter hereof and supersedes all prior or contemporaneous communications, representations, or agreements, whether oral or written.
 * **Third-Party Software:** Customer acknowledges that the Software may contain open and closed source components (“OSS Components”) that are governed separately by certain licenses, in each case as further provided by Company upon request. Any applicable OSS Component license is solely between Licensee and the applicable licensor of the OSS Component and Licensee shall comply with the applicable OSS Component license.
 * If any provision of this Agreement is held to be invalid or unenforceable, such provision shall be struck and the remaining provisions shall remain in full force and effect.
@@ -84,7 +56,7 @@ For the purposes of this Agreement an "**Affiliate**" means any entity that dire
 **Miscellaneous**
 
 * **Miscellaneous:** This Agreement may be modified at any time by Licensor, and constitutes the entire agreement between the parties with respect to the subject matter hereof. Licensee may not assign or subcontract its rights or obligations under this Agreement.  This Agreement does not, and shall not be construed to create any relationship, partnership, joint venture, employer-employee, agency, or franchisor-franchisee relationship between the parties.
-* **Modifications**: Licensor reserves the right to modify this Agreement at any time. Changes will be effective upon posting to the Website or within the Software repository. Continued use of the Software after such changes constitutes acceptance.
 * **Governing Law & Jurisdiction:** This Agreement shall be governed and construed in accordance with the laws of Israel, without giving effect to their respective conflicts of laws provisions, and the competent courts situated in Tel Aviv, Israel, shall have sole and exclusive jurisdiction over the parties and any conflict and/or dispute arising out of, or in connection to, this Agreement
 
 \[*End of ScyllaDB Software License Agreement*\]
+

NOTICE.txt

@@ -1,6 +1,9 @@
 This project includes code developed by the Apache Software Foundation (http://www.apache.org/),
 especially Apache Cassandra.
 
+It includes files from https://github.com/antonblanchard/crc32-vpmsum (author Anton Blanchard <anton@au.ibm.com>, IBM).
+These files are located in utils/arch/powerpc/crc32-vpmsum. Their license may be found in licenses/LICENSE-crc32-vpmsum.TXT.
+
 It includes modified code from https://gitbox.apache.org/repos/asf?p=cassandra-dtest.git (owned by The Apache Software Foundation)
 
 It includes modified tests from https://github.com/etcd-io/etcd.git (owned by The etcd Authors)

README.md

@@ -18,7 +18,7 @@ Scylla is fairly fussy about its build environment, requiring very recent
 versions of the C++23 compiler and of many libraries to build. The document
 [HACKING.md](HACKING.md) includes detailed information on building and
 developing Scylla, but to get Scylla building quickly on (almost) any build
-machine, Scylla offers a [frozen toolchain](tools/toolchain/README.md).
+machine, Scylla offers a [frozen toolchain](tools/toolchain/README.md),
 This is a pre-configured Docker image which includes recent versions of all
 the required compilers, libraries and build tools. Using the frozen toolchain
 allows you to avoid changing anything in your build machine to meet Scylla's
@@ -43,7 +43,7 @@ For further information, please see:
 
 [developer documentation]: HACKING.md
 [build documentation]: docs/dev/building.md
-[docker image build documentation]: dist/docker/redhat/README.md
+[docker image build documentation]: dist/docker/debian/README.md
 
 ## Running Scylla
 

SCYLLA-VERSION-GEN

@@ -78,7 +78,7 @@ fi
 
 # Default scylla product/version tags
 PRODUCT=scylla
-VERSION=2026.3.0-dev
+VERSION=2025.3.1
 
 if test -f version
 then

absl-flat_hash_map.cc

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #include "absl-flat_hash_map.hh"

absl-flat_hash_map.hh

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #pragma once

alternator/CMakeLists.txt

@@ -9,8 +9,6 @@ target_sources(alternator
     controller.cc
     server.cc
     executor.cc
-    executor_read.cc
-    executor_util.cc
     stats.cc
     serialization.cc
     expressions.cc
@@ -19,8 +17,6 @@ target_sources(alternator
     streams.cc
     consumed_capacity.cc
     ttl.cc
-    parsed_expression_cache.cc
-    http_compression.cc
     ${cql_grammar_srcs})
 target_include_directories(alternator
   PUBLIC
@@ -37,8 +33,5 @@ target_link_libraries(alternator
     idl
     absl::headers)
 
-if (Scylla_USE_PRECOMPILED_HEADER_USE)
-  target_precompile_headers(alternator REUSE_FROM scylla-precompiled-header)
-endif()
 check_headers(check-headers alternator
   GLOB_RECURSE ${CMAKE_CURRENT_SOURCE_DIR}/*.hh)

alternator/attribute_path.hh

@@ -1,253 +0,0 @@
-/*
- * Copyright 2019-present ScyllaDB
- */
-
-/*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
- */
-
-#pragma once
-
-#include <map>
-#include <memory>
-#include <optional>
-#include <string>
-#include <unordered_map>
-#include <variant>
-
-#include "utils/rjson.hh"
-#include "utils/overloaded_functor.hh"
-#include "alternator/error.hh"
-#include "alternator/expressions_types.hh"
-
-namespace alternator {
-
-// An attribute_path_map object is used to hold data for various attributes
-// paths (parsed::path) in a hierarchy of attribute paths. Each attribute path
-// has a root attribute, and then modified by member and index operators -
-// for example in "a.b[2].c" we have "a" as the root, then ".b" member, then
-// "[2]" index, and finally ".c" member.
-// Data can be added to an attribute_path_map using the add() function, but
-// requires that attributes with data not be *overlapping* or *conflicting*:
-//
-// 1. Two attribute paths which are identical or an ancestor of one another
-//    are considered *overlapping* and not allowed. If a.b.c has data,
-//    we can't add more data in a.b.c or any of its descendants like a.b.c.d.
-//
-// 2. Two attribute paths which need the same parent to have both a member and
-//    an index are considered *conflicting* and not allowed. E.g., if a.b has
-//    data, you can't add a[1]. The meaning of adding both would be that the
-//    attribute a is both a map and an array, which isn't sensible.
-//
-// These two requirements are common to the two places where Alternator uses
-// this abstraction to describe how a hierarchical item is to be transformed:
-//
-// 1. In ProjectExpression: for filtering from a full top-level attribute
-//    only the parts for which user asked in ProjectionExpression.
-//
-// 2. In UpdateExpression: for taking the previous value of a top-level
-//    attribute, and modifying it based on the instructions in the user
-//    wrote in UpdateExpression.
-
-template<typename T>
-class attribute_path_map_node {
-public:
-    using data_t = T;
-    // We need the extra unique_ptr<> here because libstdc++ unordered_map
-    // doesn't work with incomplete types :-(
-    using members_t =  std::unordered_map<std::string, std::unique_ptr<attribute_path_map_node<T>>>;
-    // The indexes list is sorted because DynamoDB requires handling writes
-    // beyond the end of a list in index order.
-    using indexes_t = std::map<unsigned, std::unique_ptr<attribute_path_map_node<T>>>;
-    // The prohibition on "overlap" and "conflict" explained above means
-    // That only one of data, members or indexes is non-empty.
-    std::optional<std::variant<data_t, members_t, indexes_t>> _content;
-
-    bool is_empty() const { return !_content; }
-    bool has_value() const { return _content && std::holds_alternative<data_t>(*_content); }
-    bool has_members() const { return _content && std::holds_alternative<members_t>(*_content); }
-    bool has_indexes() const { return _content && std::holds_alternative<indexes_t>(*_content); }
-    // get_members() assumes that has_members() is true
-    members_t& get_members() { return std::get<members_t>(*_content); }
-    const members_t& get_members() const { return std::get<members_t>(*_content); }
-    indexes_t& get_indexes() { return std::get<indexes_t>(*_content); }
-    const indexes_t& get_indexes() const { return std::get<indexes_t>(*_content); }
-    T& get_value() { return std::get<T>(*_content); }
-    const T& get_value() const { return std::get<T>(*_content); }
-};
-
-template<typename T>
-using attribute_path_map = std::unordered_map<std::string, attribute_path_map_node<T>>;
-
-using attrs_to_get_node = attribute_path_map_node<std::monostate>;
-// attrs_to_get lists which top-level attribute are needed, and possibly also
-// which part of the top-level attribute is really needed (when nested
-// attribute paths appeared in the query).
-// Most code actually uses optional<attrs_to_get>. There, a disengaged
-// optional means we should get all attributes, not specific ones.
-using attrs_to_get = attribute_path_map<std::monostate>;
-
-// takes a given JSON value and drops its parts which weren't asked to be
-// kept. It modifies the given JSON value, or returns false to signify that
-// the entire object should be dropped.
-// Note that The JSON value is assumed to be encoded using the DynamoDB
-// conventions - i.e., it is really a map whose key has a type string,
-// and the value is the real object.
-template<typename T>
-bool hierarchy_filter(rjson::value& val, const attribute_path_map_node<T>& h) {
-    if (!val.IsObject() || val.MemberCount() != 1) {
-        // This shouldn't happen. We shouldn't have stored malformed objects.
-        // But today Alternator does not validate the structure of nested
-        // documents before storing them, so this can happen on read.
-        throw api_error::internal(format("Malformed value object read: {}", val));
-    }
-    const char* type = val.MemberBegin()->name.GetString();
-    rjson::value& v = val.MemberBegin()->value;
-    if (h.has_members()) {
-        const auto& members = h.get_members();
-        if (type[0] != 'M' || !v.IsObject()) {
-            // If v is not an object (dictionary, map), none of the members
-            // can match.
-            return false;
-        }
-        rjson::value newv = rjson::empty_object();
-        for (auto it = v.MemberBegin(); it != v.MemberEnd(); ++it) {
-            std::string attr = rjson::to_string(it->name);
-            auto x = members.find(attr);
-            if (x != members.end()) {
-                if (x->second) {
-                    // Only a part of this attribute is to be filtered, do it.
-                    if (hierarchy_filter(it->value, *x->second)) {
-                        // because newv started empty and attr are unique
-                        // (keys of v), we can use add() here
-                        rjson::add_with_string_name(newv, attr, std::move(it->value));
-                    }
-                } else {
-                    // The entire attribute is to be kept
-                    rjson::add_with_string_name(newv, attr, std::move(it->value));
-                }
-            }
-        }
-        if (newv.MemberCount() == 0) {
-            return false;
-        }
-        v = newv;
-    } else if (h.has_indexes()) {
-        const auto& indexes = h.get_indexes();
-        if (type[0] != 'L' || !v.IsArray()) {
-            return false;
-        }
-        rjson::value newv = rjson::empty_array();
-        const auto& a = v.GetArray();
-        for (unsigned i = 0; i < v.Size(); i++) {
-            auto x = indexes.find(i);
-            if (x != indexes.end()) {
-                if (x->second) {
-                    if (hierarchy_filter(a[i], *x->second)) {
-                        rjson::push_back(newv, std::move(a[i]));
-                    }
-                } else {
-                    // The entire attribute is to be kept
-                    rjson::push_back(newv, std::move(a[i]));
-                }
-            }
-        }
-        if (newv.Size() == 0) {
-            return false;
-        }
-        v = newv;
-    }
-    return true;
-}
-
-// Add a path to an attribute_path_map. Throws a validation error if the path
-// "overlaps" with one already in the filter (one is a sub-path of the other)
-// or "conflicts" with it (both a member and index is requested).
-template<typename T>
-void attribute_path_map_add(const char* source, attribute_path_map<T>& map, const parsed::path& p, T value = {}) {
-   using node = attribute_path_map_node<T>;
-    // The first step is to look for the top-level attribute (p.root()):
-    auto it = map.find(p.root());
-    if (it == map.end()) {
-        if (p.has_operators()) {
-            it = map.emplace(p.root(), node {std::nullopt}).first;
-        } else {
-            (void) map.emplace(p.root(), node {std::move(value)}).first;
-            // Value inserted for top-level node. We're done.
-            return;
-        }
-    } else if(!p.has_operators()) {
-        // If p is top-level and we already have it or a part of it
-        // in map, it's a forbidden overlapping path.
-        throw api_error::validation(fmt::format(
-            "Invalid {}: two document paths overlap at {}", source, p.root()));
-    } else if (it->second.has_value()) {
-        // If we're here, it != map.end() && p.has_operators && it->second.has_value().
-        // This means the top-level attribute already has a value, and we're
-        // trying to add a non-top-level value. It's an overlap.
-        throw api_error::validation(fmt::format("Invalid {}: two document paths overlap at {}", source, p.root()));
-    }
-    node* h = &it->second;
-    // The second step is to walk h from the top-level node to the inner node
-    // where we're supposed to insert the value:
-    for (const auto& op : p.operators()) {
-        std::visit(overloaded_functor {
-            [&] (const std::string& member) {
-                if (h->is_empty()) {
-                    *h = node {typename node::members_t()};
-                } else if (h->has_indexes()) {
-                    throw api_error::validation(format("Invalid {}: two document paths conflict at {}", source, p));
-                } else if (h->has_value()) {
-                    throw api_error::validation(format("Invalid {}: two document paths overlap at {}", source, p));
-                }
-                typename node::members_t& members = h->get_members();
-                auto it = members.find(member);
-                if (it == members.end()) {
-                    it = members.insert({member, std::make_unique<node>()}).first;
-                }
-                h = it->second.get();
-            },
-            [&] (unsigned index) {
-                if (h->is_empty()) {
-                    *h = node {typename node::indexes_t()};
-                } else if (h->has_members()) {
-                    throw api_error::validation(format("Invalid {}: two document paths conflict at {}", source, p));
-                } else if (h->has_value()) {
-                    throw api_error::validation(format("Invalid {}: two document paths overlap at {}", source, p));
-                }
-                typename node::indexes_t& indexes = h->get_indexes();
-                auto it = indexes.find(index);
-                if (it == indexes.end()) {
-                    it = indexes.insert({index, std::make_unique<node>()}).first;
-                }
-                h = it->second.get();
-            }
-        }, op);
-    }
-    // Finally, insert the value in the node h.
-    if (h->is_empty()) {
-        *h = node {std::move(value)};
-    } else {
-        throw api_error::validation(format("Invalid {}: two document paths overlap at {}", source, p));
-    }
-}
-
-// A very simplified version of the above function for the special case of
-// adding only top-level attribute. It's not only simpler, we also use a
-// different error message, referring to a "duplicate attribute" instead of
-// "overlapping paths". DynamoDB also has this distinction (errors in
-// AttributesToGet refer to duplicates, not overlaps, but errors in
-// ProjectionExpression refer to overlap - even if it's an exact duplicate).
-template<typename T>
-void attribute_path_map_add(const char* source, attribute_path_map<T>& map, const std::string& attr, T value = {}) {
-   using node = attribute_path_map_node<T>;
-    auto it = map.find(attr);
-    if (it == map.end()) {
-        map.emplace(attr, node {std::move(value)});
-    } else {
-        throw api_error::validation(fmt::format(
-            "Invalid {}: Duplicate attribute: {}", source, attr));
-    }
-}
-
-} // namespace alternator

alternator/auth.cc

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #include "alternator/error.hh"
@@ -11,10 +11,10 @@
 #include "utils/log.hh"
 #include <string>
 #include <string_view>
+#include "bytes.hh"
 #include "alternator/auth.hh"
 #include <fmt/format.h>
-#include "db/consistency_level_type.hh"
-#include "db/system_keyspace.hh"
+#include "auth/password_authenticator.hh"
 #include "service/storage_proxy.hh"
 #include "alternator/executor.hh"
 #include "cql3/selection/selection.hh"
@@ -26,8 +26,8 @@ namespace alternator {
 
 static logging::logger alogger("alternator-auth");
 
-future<std::string> get_key_from_roles(service::storage_proxy& proxy, std::string username) {
-    schema_ptr schema = proxy.data_dictionary().find_schema(db::system_keyspace::NAME, "roles");
+future<std::string> get_key_from_roles(service::storage_proxy& proxy, auth::service& as, std::string username) {
+    schema_ptr schema = proxy.data_dictionary().find_schema(auth::get_auth_ks_name(as.query_processor()), "roles");
     partition_key pk = partition_key::from_single_value(*schema, utf8_type->decompose(username));
     dht::partition_range_vector partition_ranges{dht::partition_range(dht::decorate_key(*schema, pk))};
     std::vector<query::clustering_range> bounds{query::clustering_range::make_open_ended_both_sides()};
@@ -40,7 +40,7 @@ future<std::string> get_key_from_roles(service::storage_proxy& proxy, std::strin
     auto partition_slice = query::partition_slice(std::move(bounds), {}, query::column_id_vector{salted_hash_col->id, can_login_col->id}, selection->get_query_options());
     auto command = ::make_lw_shared<query::read_command>(schema->id(), schema->version(), partition_slice,
             proxy.get_max_result_size(partition_slice), query::tombstone_limit(proxy.get_tombstone_limit()));
-    auto cl = db::consistency_level::LOCAL_ONE;
+    auto cl = auth::password_authenticator::consistency_for_user(username);
 
     service::client_state client_state{service::client_state::internal_tag()};
     service::storage_proxy::coordinator_query_result qr = co_await proxy.query(schema, std::move(command), std::move(partition_ranges), cl,

alternator/auth.hh

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #pragma once
@@ -20,6 +20,6 @@ namespace alternator {
 
 using key_cache = utils::loading_cache<std::string, std::string, 1>;
 
-future<std::string> get_key_from_roles(service::storage_proxy& proxy, std::string username);
+future<std::string> get_key_from_roles(service::storage_proxy& proxy, auth::service& as, std::string username);
 
 }

alternator/conditions.cc

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #include <string_view>
@@ -42,7 +42,7 @@ comparison_operator_type get_comparison_operator(const rjson::value& comparison_
     if (!comparison_operator.IsString()) {
         throw api_error::validation(fmt::format("Invalid comparison operator definition {}", rjson::print(comparison_operator)));
     }
-    std::string op = rjson::to_string(comparison_operator);
+    std::string op = comparison_operator.GetString();
     auto it = ops.find(op);
     if (it == ops.end()) {
         throw api_error::validation(fmt::format("Unsupported comparison operator {}", op));
@@ -377,8 +377,8 @@ bool check_compare(const rjson::value* v1, const rjson::value& v2, const Compara
         return cmp(unwrap_number(*v1, cmp.diagnostic), unwrap_number(v2, cmp.diagnostic));
     }
     if (kv1.name == "S") {
-        return cmp(rjson::to_string_view(kv1.value),
-                   rjson::to_string_view(kv2.value));
+        return cmp(std::string_view(kv1.value.GetString(), kv1.value.GetStringLength()),
+                   std::string_view(kv2.value.GetString(), kv2.value.GetStringLength()));
     }
     if (kv1.name == "B") {
         auto d_kv1 = unwrap_bytes(kv1.value, v1_from_query);
@@ -470,9 +470,9 @@ static bool check_BETWEEN(const rjson::value* v, const rjson::value& lb, const r
         return check_BETWEEN(unwrap_number(*v, diag), unwrap_number(lb, diag), unwrap_number(ub, diag), bounds_from_query);
     }
     if (kv_v.name == "S") {
-        return check_BETWEEN(rjson::to_string_view(kv_v.value),
-                             rjson::to_string_view(kv_lb.value),
-                             rjson::to_string_view(kv_ub.value),
+        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()),
                              bounds_from_query);
     }
     if (kv_v.name == "B") {
@@ -618,7 +618,7 @@ conditional_operator_type get_conditional_operator(const rjson::value& req) {
 // 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 a ValidationException API error if there
+// 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 rjson::value* previous_item) {
     const rjson::value* expected = rjson::find(req, "Expected");

alternator/conditions.hh

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 /*

alternator/consumed_capacity.cc

@@ -3,13 +3,11 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #include "consumed_capacity.hh"
 #include "error.hh"
-#include "utils/rjson.hh"
-#include <fmt/format.h>
 
 namespace alternator {
 
@@ -34,18 +32,18 @@ bool consumed_capacity_counter::should_add_capacity(const rjson::value& request)
     if (!return_consumed->IsString()) {
         throw api_error::validation("Non-string ReturnConsumedCapacity field in request");
     }
-    std::string_view consumed = rjson::to_string_view(*return_consumed);
+    std::string consumed = return_consumed->GetString();
     if (consumed == "INDEXES") {
         throw api_error::validation("INDEXES consumed capacity is not supported");
     }
     if (consumed != "TOTAL") {
-        throw api_error::validation(fmt::format("Unknown consumed capacity {}", consumed));
+        throw api_error::validation("Unknown consumed capacity "+ consumed);
     }
     return true;
 }
 
 void consumed_capacity_counter::add_consumed_capacity_to_response_if_needed(rjson::value& response) const noexcept {
-    if (_should_add_to_response) {
+    if (_should_add_to_reponse) {
         auto consumption = rjson::empty_object();
         rjson::add(consumption, "CapacityUnits", get_consumed_capacity_units());
         rjson::add(response, "ConsumedCapacity", std::move(consumption));

alternator/consumed_capacity.hh

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #pragma once
@@ -28,9 +28,9 @@ namespace alternator {
 class consumed_capacity_counter {
 public:
     consumed_capacity_counter() = default;
-    consumed_capacity_counter(bool should_add_to_response) : _should_add_to_response(should_add_to_response){}
+    consumed_capacity_counter(bool should_add_to_reponse) : _should_add_to_reponse(should_add_to_reponse){}
     bool operator()() const noexcept {
-        return _should_add_to_response;
+        return _should_add_to_reponse;
     }
 
     consumed_capacity_counter& operator +=(uint64_t bytes);
@@ -44,7 +44,7 @@ public:
     uint64_t _total_bytes = 0;
     static bool should_add_capacity(const rjson::value& request);
 protected:
-    bool _should_add_to_response = false;
+    bool _should_add_to_reponse = false;
 };
 
 class rcu_consumed_capacity_counter : public consumed_capacity_counter {

alternator/controller.cc

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #include <seastar/core/with_scheduling_group.hh>
@@ -18,7 +18,6 @@
 #include "service/memory_limiter.hh"
 #include "auth/service.hh"
 #include "service/qos/service_level_controller.hh"
-#include "vector_search/vector_store_client.hh"
 
 using namespace seastar;
 
@@ -29,29 +28,23 @@ static logging::logger logger("alternator_controller");
 controller::controller(
         sharded<gms::gossiper>& gossiper,
         sharded<service::storage_proxy>& proxy,
-        sharded<service::storage_service>& ss,
         sharded<service::migration_manager>& mm,
         sharded<db::system_distributed_keyspace>& sys_dist_ks,
-        sharded<db::system_keyspace>& sys_ks,
         sharded<cdc::generation_service>& cdc_gen_svc,
         sharded<service::memory_limiter>& memory_limiter,
         sharded<auth::service>& auth_service,
         sharded<qos::service_level_controller>& sl_controller,
-        sharded<vector_search::vector_store_client>& vsc,
         const db::config& config,
         seastar::scheduling_group sg)
     : protocol_server(sg)
     , _gossiper(gossiper)
     , _proxy(proxy)
-    , _ss(ss)
     , _mm(mm)
     , _sys_dist_ks(sys_dist_ks)
-    , _sys_ks(sys_ks)
     , _cdc_gen_svc(cdc_gen_svc)
     , _memory_limiter(memory_limiter)
     , _auth_service(auth_service)
     , _sl_controller(sl_controller)
-    , _vsc(vsc)
     , _config(config)
 {
 }
@@ -96,8 +89,8 @@ future<> controller::start_server() {
         auto get_timeout_in_ms = [] (const db::config& cfg) -> utils::updateable_value<uint32_t> {
             return cfg.alternator_timeout_in_ms;
         };
-        _executor.start(std::ref(_gossiper), std::ref(_proxy), std::ref(_ss), std::ref(_mm), std::ref(_sys_dist_ks), std::ref(_sys_ks),
-                        sharded_parameter(get_cdc_metadata, std::ref(_cdc_gen_svc)), std::ref(_vsc), _ssg.value(),
+        _executor.start(std::ref(_gossiper), std::ref(_proxy), std::ref(_mm), std::ref(_sys_dist_ks),
+                        sharded_parameter(get_cdc_metadata, std::ref(_cdc_gen_svc)), _ssg.value(),
                         sharded_parameter(get_timeout_in_ms, std::ref(_config))).get();
         _server.start(std::ref(_executor), std::ref(_proxy), std::ref(_gossiper), std::ref(_auth_service), std::ref(_sl_controller)).get();
         // Note: from this point on, if start_server() throws for any reason,
@@ -110,23 +103,11 @@ future<> controller::start_server() {
             alternator_port = _config.alternator_port();
             _listen_addresses.push_back({addr, *alternator_port});
         }
-        std::optional<uint16_t> alternator_port_proxy_protocol;
-        if (_config.alternator_port_proxy_protocol()) {
-            alternator_port_proxy_protocol = _config.alternator_port_proxy_protocol();
-            _listen_addresses.push_back({addr, *alternator_port_proxy_protocol});
-        }
         std::optional<uint16_t> alternator_https_port;
-        std::optional<uint16_t> alternator_https_port_proxy_protocol;
         std::optional<tls::credentials_builder> creds;
-        if (_config.alternator_https_port() || _config.alternator_https_port_proxy_protocol()) {
-            if (_config.alternator_https_port()) {
-                alternator_https_port = _config.alternator_https_port();
-                _listen_addresses.push_back({addr, *alternator_https_port});
-            }
-            if (_config.alternator_https_port_proxy_protocol()) {
-                alternator_https_port_proxy_protocol = _config.alternator_https_port_proxy_protocol();
-                _listen_addresses.push_back({addr, *alternator_https_port_proxy_protocol});
-            }
+        if (_config.alternator_https_port()) {
+            alternator_https_port = _config.alternator_https_port();
+            _listen_addresses.push_back({addr, *alternator_https_port});
             creds.emplace();
             auto opts = _config.alternator_encryption_options();
             if (opts.empty()) {
@@ -152,29 +133,18 @@ future<> controller::start_server() {
             }
         }
         _server.invoke_on_all(
-                [this, addr, alternator_port, alternator_https_port, alternator_port_proxy_protocol, alternator_https_port_proxy_protocol, creds = std::move(creds)] (server& server) mutable {
-            return server.init(addr, alternator_port, alternator_https_port, alternator_port_proxy_protocol, alternator_https_port_proxy_protocol, creds,
+                [this, addr, alternator_port, alternator_https_port, creds = std::move(creds)] (server& server) mutable {
+            return server.init(addr, alternator_port, alternator_https_port, creds,
                     _config.alternator_enforce_authorization,
-                    _config.alternator_warn_authorization,
-                    _config.alternator_max_users_query_size_in_trace_output,
                     &_memory_limiter.local().get_semaphore(),
                     _config.max_concurrent_requests_per_shard);
-        }).handle_exception([this, addr, alternator_port, alternator_https_port, alternator_port_proxy_protocol, alternator_https_port_proxy_protocol] (std::exception_ptr ep) {
-            logger.error("Failed to set up Alternator HTTP server on {} port {}, TLS port {}, proxy-protocol port {}, TLS proxy-protocol port {}: {}",
-                    addr,
-                    alternator_port ? std::to_string(*alternator_port) : "OFF",
-                    alternator_https_port ? std::to_string(*alternator_https_port) : "OFF",
-                    alternator_port_proxy_protocol ? std::to_string(*alternator_port_proxy_protocol) : "OFF",
-                    alternator_https_port_proxy_protocol ? std::to_string(*alternator_https_port_proxy_protocol) : "OFF",
-                    ep);
+        }).handle_exception([this, addr, alternator_port, alternator_https_port] (std::exception_ptr ep) {
+            logger.error("Failed to set up Alternator HTTP server on {} port {}, TLS port {}: {}",
+                    addr, alternator_port ? std::to_string(*alternator_port) : "OFF", alternator_https_port ? std::to_string(*alternator_https_port) : "OFF", ep);
             return stop_server().then([ep = std::move(ep)] { return make_exception_future<>(ep); });
-        }).then([addr, alternator_port, alternator_https_port, alternator_port_proxy_protocol, alternator_https_port_proxy_protocol] {
-            logger.info("Alternator server listening on {}, HTTP port {}, HTTPS port {}, proxy-protocol port {}, TLS proxy-protocol port {}",
-                    addr,
-                    alternator_port ? std::to_string(*alternator_port) : "OFF",
-                    alternator_https_port ? std::to_string(*alternator_https_port) : "OFF",
-                    alternator_port_proxy_protocol ? std::to_string(*alternator_port_proxy_protocol) : "OFF",
-                    alternator_https_port_proxy_protocol ? std::to_string(*alternator_https_port_proxy_protocol) : "OFF");
+        }).then([addr, alternator_port, alternator_https_port] {
+            logger.info("Alternator server listening on {}, HTTP port {}, HTTPS port {}",
+                    addr, alternator_port ? std::to_string(*alternator_port) : "OFF", alternator_https_port ? std::to_string(*alternator_https_port) : "OFF");
         }).get();
     });
 }
@@ -197,8 +167,4 @@ future<> controller::request_stop_server() {
     });
 }
 
-future<utils::chunked_vector<foreign_ptr<std::unique_ptr<client_data>>>> controller::get_client_data() {
-    return _server.local().get_client_data();
-}
-
 }

alternator/controller.hh

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #pragma once
@@ -11,18 +11,16 @@
 #include <seastar/core/sharded.hh>
 #include <seastar/core/smp.hh>
 
-#include "transport/protocol_server.hh"
+#include "protocol_server.hh"
 
 namespace service {
 class storage_proxy;
-class storage_service;
 class migration_manager;
 class memory_limiter;
 }
 
 namespace db {
 class system_distributed_keyspace;
-class system_keyspace;
 class config;
 }
 
@@ -44,10 +42,6 @@ namespace qos {
 class service_level_controller;
 }
 
-namespace vector_search {
-class vector_store_client;
-}
-
 namespace alternator {
 
 // This is the official DynamoDB API version.
@@ -63,15 +57,12 @@ class server;
 class controller : public protocol_server {
     sharded<gms::gossiper>& _gossiper;
     sharded<service::storage_proxy>& _proxy;
-    sharded<service::storage_service>& _ss;
     sharded<service::migration_manager>& _mm;
     sharded<db::system_distributed_keyspace>& _sys_dist_ks;
-    sharded<db::system_keyspace>& _sys_ks;
     sharded<cdc::generation_service>& _cdc_gen_svc;
     sharded<service::memory_limiter>& _memory_limiter;
     sharded<auth::service>& _auth_service;
     sharded<qos::service_level_controller>& _sl_controller;
-    sharded<vector_search::vector_store_client>& _vsc;
     const db::config& _config;
 
     std::vector<socket_address> _listen_addresses;
@@ -83,15 +74,12 @@ public:
     controller(
         sharded<gms::gossiper>& gossiper,
         sharded<service::storage_proxy>& proxy,
-        sharded<service::storage_service>& ss,
         sharded<service::migration_manager>& mm,
         sharded<db::system_distributed_keyspace>& sys_dist_ks,
-        sharded<db::system_keyspace>& sys_ks,
         sharded<cdc::generation_service>& cdc_gen_svc,
         sharded<service::memory_limiter>& memory_limiter,
         sharded<auth::service>& auth_service,
         sharded<qos::service_level_controller>& sl_controller,
-        sharded<vector_search::vector_store_client>& vsc,
         const db::config& config,
         seastar::scheduling_group sg);
 
@@ -102,10 +90,6 @@ public:
     virtual future<> start_server() override;
     virtual future<> stop_server() override;
     virtual future<> request_stop_server() override;
-    // This virtual function is called (on each shard separately) when the
-    // virtual table "system.clients" is read. It is expected to generate a
-    // list of clients connected to this server (on this shard).
-    virtual future<utils::chunked_vector<foreign_ptr<std::unique_ptr<client_data>>>> get_client_data() override;
 };
 
 }

alternator/error.hh

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #pragma once
@@ -94,9 +94,6 @@ public:
     static api_error internal(std::string msg) {
         return api_error("InternalServerError", std::move(msg), http::reply::status_type::internal_server_error);
     }
-    static api_error payload_too_large(std::string msg) {
-        return api_error("PayloadTooLarge", std::move(msg), status_type::payload_too_large);
-    }
 
     // Provide the "std::exception" interface, to make it easier to print this
     // exception in log messages. Note that this function is *not* used to

alternator/executor.hh

@@ -3,15 +3,13 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #pragma once
 
 #include <seastar/core/future.hh>
-#include "audit/audit.hh"
 #include "seastarx.hh"
-#include <seastar/core/future.hh>
 #include <seastar/core/sharded.hh>
 #include <seastar/util/noncopyable_function.hh>
 
@@ -19,26 +17,16 @@
 #include "service/client_state.hh"
 #include "service_permit.hh"
 #include "db/timeout_clock.hh"
-#include "db/config.hh"
 
 #include "alternator/error.hh"
-#include "alternator/attribute_path.hh"
-#include "alternator/stats.hh"
-#include "alternator/executor_util.hh"
-
+#include "stats.hh"
 #include "utils/rjson.hh"
 #include "utils/updateable_value.hh"
 
 #include "tracing/trace_state.hh"
 
-
 namespace db {
     class system_distributed_keyspace;
-    class system_keyspace;
-}
-
-namespace audit {
-class audit_info_alternator;
 }
 
 namespace query {
@@ -52,12 +40,6 @@ namespace cql3::selection {
 
 namespace service {
     class storage_proxy;
-    class cas_shard;
-    class storage_service;
-}
-
-namespace vector_search {
-    class vector_store_client;
 }
 
 namespace cdc {
@@ -72,40 +54,96 @@ class gossiper;
 
 class schema_builder;
 
-
 namespace alternator {
 
-enum class table_status;
 class rmw_operation;
-class put_or_delete_item;
 
 namespace parsed {
-class expression_cache;
-}
+class path;
+};
+
+schema_ptr get_table(service::storage_proxy& proxy, const rjson::value& request);
+bool is_alternator_keyspace(const sstring& ks_name);
+// Wraps the db::get_tags_of_table and throws if the table is missing the tags extension.
+const std::map<sstring, sstring>& get_tags_of_table_or_throw(schema_ptr schema);
+
+// An attribute_path_map object is used to hold data for various attributes
+// paths (parsed::path) in a hierarchy of attribute paths. Each attribute path
+// has a root attribute, and then modified by member and index operators -
+// for example in "a.b[2].c" we have "a" as the root, then ".b" member, then
+// "[2]" index, and finally ".c" member.
+// Data can be added to an attribute_path_map using the add() function, but
+// requires that attributes with data not be *overlapping* or *conflicting*:
+//
+// 1. Two attribute paths which are identical or an ancestor of one another
+//    are considered *overlapping* and not allowed. If a.b.c has data,
+//    we can't add more data in a.b.c or any of its descendants like a.b.c.d.
+//
+// 2. Two attribute paths which need the same parent to have both a member and
+//    an index are considered *conflicting* and not allowed. E.g., if a.b has
+//    data, you can't add a[1]. The meaning of adding both would be that the
+//    attribute a is both a map and an array, which isn't sensible.
+//
+// These two requirements are common to the two places where Alternator uses
+// this abstraction to describe how a hierarchical item is to be transformed:
+//
+// 1. In ProjectExpression: for filtering from a full top-level attribute
+//    only the parts for which user asked in ProjectionExpression.
+//
+// 2. In UpdateExpression: for taking the previous value of a top-level
+//    attribute, and modifying it based on the instructions in the user
+//    wrote in UpdateExpression.
+
+template<typename T>
+class attribute_path_map_node {
+public:
+    using data_t = T;
+    // We need the extra unique_ptr<> here because libstdc++ unordered_map
+    // doesn't work with incomplete types :-(
+    using members_t =  std::unordered_map<std::string, std::unique_ptr<attribute_path_map_node<T>>>;
+    // The indexes list is sorted because DynamoDB requires handling writes
+    // beyond the end of a list in index order.
+    using indexes_t = std::map<unsigned, std::unique_ptr<attribute_path_map_node<T>>>;
+    // The prohibition on "overlap" and "conflict" explained above means
+    // That only one of data, members or indexes is non-empty.
+    std::optional<std::variant<data_t, members_t, indexes_t>> _content;
+
+    bool is_empty() const { return !_content; }
+    bool has_value() const { return _content && std::holds_alternative<data_t>(*_content); }
+    bool has_members() const { return _content && std::holds_alternative<members_t>(*_content); }
+    bool has_indexes() const { return _content && std::holds_alternative<indexes_t>(*_content); }
+    // get_members() assumes that has_members() is true
+    members_t& get_members() { return std::get<members_t>(*_content); }
+    const members_t& get_members() const { return std::get<members_t>(*_content); }
+    indexes_t& get_indexes() { return std::get<indexes_t>(*_content); }
+    const indexes_t& get_indexes() const { return std::get<indexes_t>(*_content); }
+    T& get_value() { return std::get<T>(*_content); }
+    const T& get_value() const { return std::get<T>(*_content); }
+};
+
+template<typename T>
+using attribute_path_map = std::unordered_map<std::string, attribute_path_map_node<T>>;
+
+using attrs_to_get_node = attribute_path_map_node<std::monostate>;
+// attrs_to_get lists which top-level attribute are needed, and possibly also
+// which part of the top-level attribute is really needed (when nested
+// attribute paths appeared in the query).
+// Most code actually uses optional<attrs_to_get>. There, a disengaged
+// optional means we should get all attributes, not specific ones.
+using attrs_to_get = attribute_path_map<std::monostate>;
+
 
 class executor : public peering_sharded_service<executor> {
     gms::gossiper& _gossiper;
-    service::storage_service& _ss;
     service::storage_proxy& _proxy;
     service::migration_manager& _mm;
     db::system_distributed_keyspace& _sdks;
-    db::system_keyspace& _system_keyspace;
     cdc::metadata& _cdc_metadata;
-    vector_search::vector_store_client& _vsc;
     utils::updateable_value<bool> _enforce_authorization;
-    utils::updateable_value<bool> _warn_authorization;
-    seastar::sharded<audit::audit>& _audit;
     // 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;
 
-    std::unique_ptr<parsed::expression_cache> _parsed_expression_cache;
-
-    struct describe_table_info_manager;
-    std::unique_ptr<describe_table_info_manager> _describe_table_info_manager;
-
-    future<> cache_newly_calculated_size_on_all_shards(schema_ptr schema, std::uint64_t size_in_bytes, std::chrono::nanoseconds ttl);
-    future<> fill_table_size(rjson::value &table_description, schema_ptr schema, bool deleting);
 public:
     using client_state = service::client_state;
     // request_return_type is the return type of the executor methods, which
@@ -119,6 +157,7 @@ public:
     // is written in chunks to the output_stream. This allows for efficient
     // handling of large responses without needing to allocate a large buffer
     // in memory.
+    using body_writer = noncopyable_function<future<>(output_stream<char>&&)>;
     using request_return_type = std::variant<std::string, body_writer, api_error>;
     stats _stats;
     // The metric_groups object holds this stat object's metrics registered
@@ -130,103 +169,108 @@ public:
 
     executor(gms::gossiper& gossiper,
              service::storage_proxy& proxy,
-             service::storage_service& ss,
              service::migration_manager& mm,
              db::system_distributed_keyspace& sdks,
-             db::system_keyspace& system_keyspace,
              cdc::metadata& cdc_metadata,
-             vector_search::vector_store_client& vsc,
              smp_service_group ssg,
              utils::updateable_value<uint32_t> default_timeout_in_ms);
-    ~executor();
 
-    future<request_return_type> create_table(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> describe_table(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> delete_table(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> update_table(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> put_item(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> get_item(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> delete_item(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> update_item(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> list_tables(client_state& client_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> scan(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> describe_endpoints(client_state& client_state, service_permit permit, rjson::value request, std::string host_header, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> batch_write_item(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> batch_get_item(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> query(client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> tag_resource(client_state& client_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> untag_resource(client_state& client_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> list_tags_of_resource(client_state& client_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> update_time_to_live(client_state& client_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> describe_time_to_live(client_state& client_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> list_streams(client_state& client_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> describe_stream(client_state& client_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> get_shard_iterator(client_state& client_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> get_records(client_state& client_state, tracing::trace_state_ptr, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-    future<request_return_type> describe_continuous_backups(client_state& client_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info);
+    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> update_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<request_return_type> update_time_to_live(client_state& client_state, service_permit permit, rjson::value request);
+    future<request_return_type> describe_time_to_live(client_state& client_state, service_permit permit, rjson::value request);
+    future<request_return_type> list_streams(client_state& client_state, service_permit permit, rjson::value request);
+    future<request_return_type> describe_stream(client_state& client_state, service_permit permit, rjson::value request);
+    future<request_return_type> get_shard_iterator(client_state& client_state, service_permit permit, rjson::value request);
+    future<request_return_type> get_records(client_state& client_state, tracing::trace_state_ptr, service_permit permit, rjson::value request);
+    future<request_return_type> describe_continuous_backups(client_state& client_state, service_permit permit, rjson::value request);
 
     future<> start();
-    future<> stop();
+    future<> stop() {
+        // disconnect from the value source, but keep the value unchanged.
+        s_default_timeout_in_ms = utils::updateable_value<uint32_t>{s_default_timeout_in_ms()};
+        return make_ready_future<>();
+    }
 
+    static sstring table_name(const schema&);
     static db::timeout_clock::time_point default_timeout();
 private:
     static thread_local utils::updateable_value<uint32_t> s_default_timeout_in_ms;
+public:
+    static schema_ptr find_table(service::storage_proxy&, const rjson::value& request);
+
+private:
     friend class rmw_operation;
 
-    // Helper to set up auditing for an Alternator operation. Checks whether
-    // the operation should be audited (via will_log()) and if so, allocates
-    // and populates audit_info. No allocation occurs when auditing is disabled.
-    void maybe_audit(std::unique_ptr<audit::audit_info_alternator>& audit_info,
-                     audit::statement_category category,
-                     std::string_view ks_name,
-                     std::string_view table_name,
-                     std::string_view operation_name,
-                     const rjson::value& request,
-                     std::optional<db::consistency_level> cl = std::nullopt);
-
-    future<rjson::value> fill_table_description(schema_ptr schema, table_status tbl_status, service::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit);
-    future<executor::request_return_type> create_table_on_shard0(service::client_state&& client_state, tracing::trace_state_ptr trace_state, rjson::value request, bool enforce_authorization,
-            bool warn_authorization, const db::tablets_mode_t::mode tablets_mode, std::unique_ptr<audit::audit_info_alternator>& audit_info);
-
-    future<> do_batch_write(
-        std::vector<std::pair<schema_ptr, put_or_delete_item>> mutation_builders,
-        service::client_state& client_state,
-        tracing::trace_state_ptr trace_state,
-        service_permit permit);
-
-    future<> cas_write(schema_ptr schema, service::cas_shard cas_shard, const dht::decorated_key& dk,
-        const std::vector<put_or_delete_item>& mutation_builders, service::client_state& client_state,
-        tracing::trace_state_ptr trace_state, service_permit permit);
+    static void describe_key_schema(rjson::value& parent, const schema&, std::unordered_map<std::string,std::string> * = nullptr);
 
 public:
-    static bool add_stream_options(const rjson::value& stream_spec, schema_builder&, service::storage_proxy& sp);
+    static void describe_key_schema(rjson::value& parent, const schema& schema, std::unordered_map<std::string,std::string>&);
+
+    static std::optional<rjson::value> describe_single_item(schema_ptr,
+        const query::partition_slice&,
+        const cql3::selection::selection&,
+        const query::result&,
+        const std::optional<attrs_to_get>&,
+        uint64_t* = nullptr);
+
+    static future<std::vector<rjson::value>> describe_multi_item(schema_ptr schema,
+        const query::partition_slice&& slice,
+        shared_ptr<cql3::selection::selection> selection,
+        foreign_ptr<lw_shared_ptr<query::result>> query_result,
+        shared_ptr<const std::optional<attrs_to_get>> attrs_to_get,
+        uint64_t& rcu_half_units);
+
+    static void describe_single_item(const cql3::selection::selection&,
+        const std::vector<managed_bytes_opt>&,
+        const std::optional<attrs_to_get>&,
+        rjson::value&,
+        uint64_t* item_length_in_bytes = nullptr,
+        bool = false);
+
+    static void add_stream_options(const rjson::value& stream_spec, schema_builder&, service::storage_proxy& sp);
     static void supplement_table_info(rjson::value& descr, const schema& schema, service::storage_proxy& sp);
     static void supplement_table_stream_info(rjson::value& descr, const schema& schema, const service::storage_proxy& sp);
 };
 
-// returns table creation time in seconds since epoch for `db_clock`
-double get_table_creation_time(const schema &schema);
+// is_big() checks approximately if the given JSON value is "bigger" than
+// the given big_size number of bytes. The goal is to *quickly* detect
+// oversized JSON that, for example, is too large to be serialized to a
+// contiguous string - we don't need an accurate size for that. Moreover,
+// as soon as we detect that the JSON is indeed "big", we can return true
+// and don't need to continue calculating its exact size.
+// For simplicity, we use a recursive implementation. This is fine because
+// Alternator limits the depth of JSONs it reads from inputs, and doesn't
+// add more than a couple of levels in its own output construction.
+bool is_big(const rjson::value& val, int big_size = 100'000);
 
-// result of parsing ARN (Amazon Resource Name)
-// ARN format is `arn:<partition>:<service>:<region>:<account-id>:<resource-type>/<resource-id>/<postfix>`
-// we ignore partition, service and account-id
-// resource-type must be string "table"
-// resource-id will be returned as table_name
-// region will be returned as keyspace_name
-// postfix is a string after resource-id and will be returned as is (whole), including separator.
-struct arn_parts {
-    std::string_view keyspace_name;
-    std::string_view table_name;
-    std::string_view postfix;
-};
-// arn - arn to parse
-// arn_field_name - identifier of the ARN, used only when reporting an error (in error messages), for example "Incorrect resource identifier `<arn_field_name>`"
-// type_name - used only when reporting an error (in error messages), for example "... is not a valid <type_name> ARN ..."
-// expected_postfix - optional filter of postfix value (part of ARN after resource-id, including separator, see comments for struct arn_parts).
-//    If is empty - then postfix value must be empty as well
-//    if not empty - postfix value must start with expected_postfix, but might be longer
-arn_parts parse_arn(std::string_view arn, std::string_view arn_field_name, std::string_view type_name, std::string_view expected_postfix);
+// Check CQL's Role-Based Access Control (RBAC) permission (MODIFY,
+// SELECT, DROP, etc.) on the given table. When permission is denied an
+// appropriate user-readable api_error::access_denied is thrown.
+future<> verify_permission(bool enforce_authorization, const service::client_state&, const schema_ptr&, auth::permission);
+
+/**
+ * Make return type for serializing the object "streamed",
+ * i.e. direct to HTTP output stream. Note: only useful for
+ * (very) large objects as there are overhead issues with this
+ * as well, but for massive lists of return objects this can
+ * help avoid large allocations/many re-allocs
+ */
+executor::body_writer make_streamed(rjson::value&&);
 
-// The format is ks1|ks2|ks3... and table1|table2|table3...
-sstring print_names_for_audit(const std::set<sstring>& names);
 }

alternator/executor_util.cc

@@ -1,559 +0,0 @@
-/*
- * Copyright 2019-present ScyllaDB
- */
-
-/*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
- */
-
-#include "alternator/executor_util.hh"
-#include "alternator/executor.hh"
-#include "alternator/error.hh"
-#include "auth/resource.hh"
-#include "auth/service.hh"
-#include "cdc/log.hh"
-#include "data_dictionary/data_dictionary.hh"
-#include "db/tags/utils.hh"
-#include "replica/database.hh"
-#include "cql3/selection/selection.hh"
-#include "cql3/result_set.hh"
-#include "serialization.hh"
-#include "service/storage_proxy.hh"
-#include "types/map.hh"
-#include <fmt/format.h>
-
-namespace alternator {
-
-extern logging::logger elogger; // from executor.cc
-
-std::optional<int> get_int_attribute(const rjson::value& value, std::string_view attribute_name) {
-    const rjson::value* attribute_value = rjson::find(value, attribute_name);
-    if (!attribute_value)
-        return {};
-    if (!attribute_value->IsInt()) {
-        throw api_error::validation(fmt::format("Expected integer value for attribute {}, got: {}",
-                attribute_name, value));
-    }
-    return attribute_value->GetInt();
-}
-
-std::string get_string_attribute(const rjson::value& value, std::string_view attribute_name, const char* default_return) {
-    const rjson::value* attribute_value = rjson::find(value, attribute_name);
-    if (!attribute_value)
-        return default_return;
-    if (!attribute_value->IsString()) {
-        throw api_error::validation(fmt::format("Expected string value for attribute {}, got: {}",
-                attribute_name, value));
-    }
-    return rjson::to_string(*attribute_value);
-}
-
-bool get_bool_attribute(const rjson::value& value, std::string_view attribute_name, bool default_return) {
-    const rjson::value* attribute_value = rjson::find(value, attribute_name);
-    if (!attribute_value) {
-        return default_return;
-    }
-    if (!attribute_value->IsBool()) {
-        throw api_error::validation(fmt::format("Expected boolean value for attribute {}, got: {}",
-                attribute_name, value));
-    }
-    return attribute_value->GetBool();
-}
-
-std::optional<std::string> find_table_name(const rjson::value& request) {
-    const rjson::value* table_name_value = rjson::find(request, "TableName");
-    if (!table_name_value) {
-        return std::nullopt;
-    }
-    if (!table_name_value->IsString()) {
-        throw api_error::validation("Non-string TableName field in request");
-    }
-    std::string table_name = rjson::to_string(*table_name_value);
-    return table_name;
-}
-
-std::string get_table_name(const rjson::value& request) {
-    auto name = find_table_name(request);
-    if (!name) {
-        throw api_error::validation("Missing TableName field in request");
-    }
-    return *name;
-}
-
-schema_ptr find_table(service::storage_proxy& proxy, const rjson::value& request) {
-    auto table_name = find_table_name(request);
-    if (!table_name) {
-        return nullptr;
-    }
-    return find_table(proxy, *table_name);
-}
-
-schema_ptr find_table(service::storage_proxy& proxy, std::string_view table_name) {
-    try {
-        return proxy.data_dictionary().find_schema(sstring(executor::KEYSPACE_NAME_PREFIX) + sstring(table_name), table_name);
-    } catch(data_dictionary::no_such_column_family&) {
-        // DynamoDB returns validation error even when table does not exist
-        // and the table name is invalid.
-        validate_table_name(table_name);
-
-        throw api_error::resource_not_found(
-                fmt::format("Requested resource not found: Table: {} not found", table_name));
-    }
-}
-
-schema_ptr get_table(service::storage_proxy& proxy, const rjson::value& request) {
-    auto schema = find_table(proxy, request);
-    if (!schema) {
-        // if we get here then the name was missing, since syntax or missing actual CF
-        // checks throw. Slow path, but just call get_table_name to generate exception.
-        get_table_name(request);
-    }
-    return schema;
-}
-
-map_type attrs_type() {
-    static thread_local auto t = map_type_impl::get_instance(utf8_type, bytes_type, true);
-    return t;
-}
-
-const std::map<sstring, sstring>& get_tags_of_table_or_throw(schema_ptr schema) {
-    auto tags_ptr = db::get_tags_of_table(schema);
-    if (tags_ptr) {
-        return *tags_ptr;
-    } else {
-        throw api_error::validation(format("Table {} does not have valid tagging information", schema->ks_name()));
-    }
-}
-
-bool is_alternator_keyspace(std::string_view ks_name) {
-    return ks_name.starts_with(executor::KEYSPACE_NAME_PREFIX);
-}
-
-// This tag is set on a GSI when the user did not specify a range key, causing
-// Alternator to add the base table's range key as a spurious range key. It is
-// used by describe_key_schema() to suppress reporting that key.
-extern const sstring SPURIOUS_RANGE_KEY_ADDED_TO_GSI_AND_USER_DIDNT_SPECIFY_RANGE_KEY_TAG_KEY;
-
-void describe_key_schema(rjson::value& parent, const schema& schema, std::unordered_map<std::string, std::string>* attribute_types, const std::map<sstring, sstring>* tags) {
-    rjson::value key_schema = rjson::empty_array();
-    const bool ignore_range_keys_as_spurious = tags != nullptr && tags->contains(SPURIOUS_RANGE_KEY_ADDED_TO_GSI_AND_USER_DIDNT_SPECIFY_RANGE_KEY_TAG_KEY);
-
-    for (const column_definition& cdef : schema.partition_key_columns()) {
-        rjson::value key = rjson::empty_object();
-        rjson::add(key, "AttributeName", rjson::from_string(cdef.name_as_text()));
-        rjson::add(key, "KeyType", "HASH");
-        rjson::push_back(key_schema, std::move(key));
-        if (attribute_types) {
-            (*attribute_types)[cdef.name_as_text()] = type_to_string(cdef.type);
-        }
-    }
-    if (!ignore_range_keys_as_spurious) {
-        // NOTE: user requested key (there can be at most one) will always come first.
-        // There might be more keys following it, which were added, but those were
-        // not requested by the user, so we ignore them.
-        for (const column_definition& cdef : schema.clustering_key_columns()) {
-            rjson::value key = rjson::empty_object();
-            rjson::add(key, "AttributeName", rjson::from_string(cdef.name_as_text()));
-            rjson::add(key, "KeyType", "RANGE");
-            rjson::push_back(key_schema, std::move(key));
-            if (attribute_types) {
-                (*attribute_types)[cdef.name_as_text()] = type_to_string(cdef.type);
-            }
-            break;
-        }
-    }
-    rjson::add(parent, "KeySchema", std::move(key_schema));
-}
-
-// Check if the given string has valid characters for a table name, i.e. only
-// a-z, A-Z, 0-9, _ (underscore), - (dash), . (dot). Note that this function
-// does not check the length of the name - instead, use validate_table_name()
-// to validate both the characters and the length.
-static bool valid_table_name_chars(std::string_view name) {
-    for (auto c : name) {
-        if ((c < 'a' || c > 'z') &&
-            (c < 'A' || c > 'Z') &&
-            (c < '0' || c > '9') &&
-            c != '_' &&
-            c != '-' &&
-            c != '.') {
-            return false;
-        }
-    }
-    return true;
-}
-
-std::string view_name(std::string_view table_name, std::string_view index_name, const std::string& delim, bool validate_len) {
-    if (index_name.length() < 3) {
-        throw api_error::validation("IndexName must be at least 3 characters long");
-    }
-    if (!valid_table_name_chars(index_name)) {
-        throw api_error::validation(
-                fmt::format("IndexName '{}' must satisfy regular expression pattern: [a-zA-Z0-9_.-]+", index_name));
-    }
-    std::string ret = std::string(table_name) + delim + std::string(index_name);
-    if (ret.length() > max_auxiliary_table_name_length && validate_len) {
-        throw api_error::validation(
-                fmt::format("The total length of TableName ('{}') and IndexName ('{}') cannot exceed {} characters",
-                        table_name, index_name, max_auxiliary_table_name_length - delim.size()));
-    }
-    return ret;
-}
-
-std::string gsi_name(std::string_view table_name, std::string_view index_name, bool validate_len) {
-    return view_name(table_name, index_name, ":", validate_len);
-}
-
-std::string lsi_name(std::string_view table_name, std::string_view index_name, bool validate_len) {
-    return view_name(table_name, index_name, "!:", validate_len);
-}
-
-void check_key(const rjson::value& key, const schema_ptr& schema) {
-    if (key.MemberCount() != (schema->clustering_key_size() == 0 ? 1 : 2)) {
-        throw api_error::validation("Given key attribute not in schema");
-    }
-}
-
-void verify_all_are_used(const rjson::value* field,
-        const std::unordered_set<std::string>& used, const char* field_name, const char* operation) {
-    if (!field) {
-        return;
-    }
-    for (auto it = field->MemberBegin(); it != field->MemberEnd(); ++it) {
-        if (!used.contains(rjson::to_string(it->name))) {
-            throw api_error::validation(
-                format("{} has spurious '{}', not used in {}",
-                    field_name, rjson::to_string_view(it->name), operation));
-        }
-    }
-}
-
-// This function increments the authorization_failures counter, and may also
-// log a warn-level message and/or throw an access_denied exception, depending
-// on what enforce_authorization and warn_authorization are set to.
-// Note that if enforce_authorization is false, this function will return
-// without throwing. So a caller that doesn't want to continue after an
-// authorization_error must explicitly return after calling this function.
-static void authorization_error(stats& stats, bool enforce_authorization, bool warn_authorization, std::string msg) {
-    stats.authorization_failures++;
-    if (enforce_authorization) {
-        if (warn_authorization) {
-            elogger.warn("alternator_warn_authorization=true: {}", msg);
-        }
-        throw api_error::access_denied(std::move(msg));
-    } else {
-        if (warn_authorization) {
-            elogger.warn("If you set alternator_enforce_authorization=true the following will be enforced: {}", msg);
-        }
-    }
-}
-
-future<> verify_permission(
-    bool enforce_authorization,
-    bool warn_authorization,
-    const service::client_state& client_state,
-    const schema_ptr& schema,
-    auth::permission permission_to_check,
-    stats& stats) {
-    if (!enforce_authorization && !warn_authorization) {
-        co_return;
-    }
-    // Unfortunately, the fix for issue #23218 did not modify the function
-    // that we use here - check_has_permissions(). So if we want to allow
-    // writes to internal tables (from try_get_internal_table()) only to a
-    // superuser, we need to explicitly check it here.
-    if (permission_to_check == auth::permission::MODIFY && is_internal_keyspace(schema->ks_name())) {
-        if (!client_state.user() ||
-            !client_state.user()->name ||
-            !co_await client_state.get_auth_service()->underlying_role_manager().is_superuser(*client_state.user()->name)) {
-                sstring username = "<anonymous>";
-                if (client_state.user() && client_state.user()->name) {
-                    username = client_state.user()->name.value();
-                }
-                authorization_error(stats, enforce_authorization, warn_authorization, fmt::format(
-                    "Write access denied on internal table {}.{} to role {} because it is not a superuser",
-                    schema->ks_name(), schema->cf_name(), username));
-                co_return;
-        }
-    }
-    auto resource = auth::make_data_resource(schema->ks_name(), schema->cf_name());
-    if (!client_state.user() || !client_state.user()->name ||
-        !co_await client_state.check_has_permission(auth::command_desc(permission_to_check, resource))) {
-        sstring username = "<anonymous>";
-        if (client_state.user() && client_state.user()->name) {
-            username = client_state.user()->name.value();
-        }
-        // Using exceptions for errors makes this function faster in the
-        // success path (when the operation is allowed).
-        authorization_error(stats, enforce_authorization, warn_authorization, fmt::format(
-            "{} access on table {}.{} is denied to role {}, client address {}",
-            auth::permissions::to_string(permission_to_check),
-            schema->ks_name(), schema->cf_name(), username, client_state.get_client_address()));
-    }
-}
-
-// Similar to verify_permission() above, but just for CREATE operations.
-// Those do not operate on any specific table, so require permissions on
-// ALL KEYSPACES instead of any specific table.
-future<> verify_create_permission(bool enforce_authorization, bool warn_authorization, const service::client_state& client_state, stats& stats) {
-    if (!enforce_authorization && !warn_authorization) {
-        co_return;
-    }
-    auto resource = auth::resource(auth::resource_kind::data);
-    if (!co_await client_state.check_has_permission(auth::command_desc(auth::permission::CREATE, resource))) {
-        sstring username = "<anonymous>";
-        if (client_state.user() && client_state.user()->name) {
-            username = client_state.user()->name.value();
-        }
-        authorization_error(stats, enforce_authorization, warn_authorization, fmt::format(
-            "CREATE access on ALL KEYSPACES is denied to role {}", username));
-    }
-}
-
-schema_ptr try_get_internal_table(const data_dictionary::database& db, std::string_view table_name) {
-    size_t it = table_name.find(executor::INTERNAL_TABLE_PREFIX);
-    if (it != 0) {
-        return schema_ptr{};
-    }
-    table_name.remove_prefix(executor::INTERNAL_TABLE_PREFIX.size());
-    size_t delim = table_name.find_first_of('.');
-    if (delim == std::string_view::npos) {
-        return schema_ptr{};
-    }
-    std::string_view ks_name = table_name.substr(0, delim);
-    table_name.remove_prefix(ks_name.size() + 1);
-    // Only internal keyspaces can be accessed to avoid leakage
-    auto ks = db.try_find_keyspace(ks_name);
-    if (!ks || !ks->is_internal()) {
-        return schema_ptr{};
-    }
-    try {
-        return db.find_schema(ks_name, table_name);
-    } catch (data_dictionary::no_such_column_family&) {
-        // DynamoDB returns validation error even when table does not exist
-        // and the table name is invalid.
-        validate_table_name(table_name);
-        throw api_error::resource_not_found(
-            fmt::format("Requested resource not found: Internal table: {}.{} not found", ks_name, table_name));
-    }
-}
-
-schema_ptr get_table_from_batch_request(const service::storage_proxy& proxy, const rjson::value::ConstMemberIterator& batch_request) {
-    sstring table_name = rjson::to_sstring(batch_request->name); // JSON keys are always strings
-    try {
-        return proxy.data_dictionary().find_schema(sstring(executor::KEYSPACE_NAME_PREFIX) + table_name, table_name);
-    } catch(data_dictionary::no_such_column_family&) {
-        // DynamoDB returns validation error even when table does not exist
-        // and the table name is invalid.
-        validate_table_name(table_name);
-        throw api_error::resource_not_found(format("Requested resource not found: Table: {} not found", table_name));
-    }
-}
-
-lw_shared_ptr<stats> get_stats_from_schema(service::storage_proxy& sp, const schema& schema) {
-    try {
-        replica::table& table = sp.local_db().find_column_family(schema.id());
-        if (!table.get_stats().alternator_stats) {
-            table.get_stats().alternator_stats = seastar::make_shared<table_stats>(schema.ks_name(), schema.cf_name());
-        }
-        return table.get_stats().alternator_stats->_stats;
-    } catch (std::runtime_error&) {
-        // If we're here it means that a table we are currently working on was deleted before the
-        // operation completed, returning a temporary object is fine, if the table get deleted so will its metrics
-        return make_lw_shared<stats>();
-    }
-}
-
-void describe_single_item(const cql3::selection::selection& selection,
-    const std::vector<managed_bytes_opt>& result_row,
-    const std::optional<attrs_to_get>& attrs_to_get,
-    rjson::value& item,
-    uint64_t* item_length_in_bytes,
-    bool include_all_embedded_attributes)
-{
-    const auto& columns = selection.get_columns();
-    auto column_it = columns.begin();
-    for (const managed_bytes_opt& cell : result_row) {
-        if (!cell) {
-            ++column_it;
-            continue;
-        }
-        std::string column_name = (*column_it)->name_as_text();
-        if (column_name != executor::ATTRS_COLUMN_NAME) {
-            if (item_length_in_bytes) {
-                (*item_length_in_bytes) += column_name.length() + cell->size();
-            }
-            if (!attrs_to_get || attrs_to_get->contains(column_name)) {
-                // item is expected to start empty, and column_name are unique
-                // so add() makes sense
-                rjson::add_with_string_name(item, column_name, rjson::empty_object());
-                rjson::value& field = item[column_name.c_str()];
-                cell->with_linearized([&] (bytes_view linearized_cell) {
-                    rjson::add_with_string_name(field, type_to_string((*column_it)->type), json_key_column_value(linearized_cell, **column_it));
-                });
-            }
-        } else {
-            auto deserialized = attrs_type()->deserialize(*cell);
-            auto keys_and_values = value_cast<map_type_impl::native_type>(deserialized);
-            for (auto entry : keys_and_values) {
-                std::string attr_name = value_cast<sstring>(entry.first);
-                if (item_length_in_bytes) {
-                    (*item_length_in_bytes) += attr_name.length();
-                }
-                if (include_all_embedded_attributes || !attrs_to_get || attrs_to_get->contains(attr_name)) {
-                    bytes value = value_cast<bytes>(entry.second);
-                    if (item_length_in_bytes && value.length()) {
-                        // ScyllaDB uses one extra byte compared to DynamoDB for the bytes length
-                        (*item_length_in_bytes) += value.length() - 1;
-                    }
-                    rjson::value v = deserialize_item(value);
-                    if (attrs_to_get) {
-                        auto it = attrs_to_get->find(attr_name);
-                        if (it != attrs_to_get->end()) {
-                            // attrs_to_get may have asked for only part of
-                            // this attribute. hierarchy_filter() modifies v,
-                            // and returns false when nothing is to be kept.
-                            if (!hierarchy_filter(v, it->second)) {
-                                continue;
-                            }
-                        }
-                    }
-                    // item is expected to start empty, and attribute
-                    // names are unique so add() makes sense
-                    rjson::add_with_string_name(item, attr_name, std::move(v));
-                } else if (item_length_in_bytes) {
-                    (*item_length_in_bytes) += value_cast<bytes>(entry.second).length() - 1;
-                }
-            }
-        }
-        ++column_it;
-    }
-}
-
-std::optional<rjson::value> describe_single_item(schema_ptr schema,
-        const query::partition_slice& slice,
-        const cql3::selection::selection& selection,
-        const query::result& query_result,
-        const std::optional<attrs_to_get>& attrs_to_get,
-        uint64_t* item_length_in_bytes) {
-    rjson::value item = rjson::empty_object();
-
-    cql3::selection::result_set_builder builder(selection, gc_clock::now());
-    query::result_view::consume(query_result, slice, cql3::selection::result_set_builder::visitor(builder, *schema, selection));
-
-    auto result_set = builder.build();
-    if (result_set->empty()) {
-        if (item_length_in_bytes) {
-            // empty results is counted as having a minimal length (e.g. 1 byte).
-            (*item_length_in_bytes) += 1;
-        }
-        // If there is no matching item, we're supposed to return an empty
-        // object without an Item member - not one with an empty Item member
-        return {};
-    }
-    if (result_set->size() > 1) {
-        // If the result set contains multiple rows, the code should have
-        // called describe_multi_item(), not this function.
-        throw std::logic_error("describe_single_item() asked to describe multiple items");
-    }
-    describe_single_item(selection, *result_set->rows().begin(), attrs_to_get, item, item_length_in_bytes);
-    return item;
-}
-
-static void check_big_array(const rjson::value& val, int& size_left);
-static void check_big_object(const rjson::value& val, int& size_left);
-
-// For simplicity, we use a recursive implementation. This is fine because
-// Alternator limits the depth of JSONs it reads from inputs, and doesn't
-// add more than a couple of levels in its own output construction.
-bool is_big(const rjson::value& val, int big_size) {
-    if (val.IsString()) {
-        return ssize_t(val.GetStringLength()) > big_size;
-    } else if (val.IsObject()) {
-        check_big_object(val, big_size);
-        return big_size < 0;
-    } else if (val.IsArray()) {
-        check_big_array(val, big_size);
-        return big_size < 0;
-    }
-    return false;
-}
-
-static void check_big_array(const rjson::value& val, int& size_left) {
-    // Assume a fixed size of 10 bytes for each number, boolean, etc., or
-    // beginning of a sub-object. This doesn't have to be accurate.
-    size_left -= 10 * val.Size();
-    for (const auto& v : val.GetArray()) {
-        if (size_left < 0) {
-            return;
-        }
-        // Note that we avoid recursive calls for the leaves (anything except
-        // array or object) because usually those greatly outnumber the trunk.
-        if (v.IsString()) {
-            size_left -= v.GetStringLength();
-        } else if (v.IsObject()) {
-            check_big_object(v, size_left);
-        } else if (v.IsArray()) {
-            check_big_array(v, size_left);
-        }
-    }
-}
-
-static void check_big_object(const rjson::value& val, int& size_left) {
-    size_left -= 10 * val.MemberCount();
-    for (const auto& m : val.GetObject()) {
-        if (size_left < 0) {
-            return;
-        }
-        size_left -= m.name.GetStringLength();
-        if (m.value.IsString()) {
-            size_left -= m.value.GetStringLength();
-        } else if (m.value.IsObject()) {
-            check_big_object(m.value, size_left);
-        } else if (m.value.IsArray()) {
-            check_big_array(m.value, size_left);
-        }
-    }
-}
-
-void validate_table_name(std::string_view name, const char* source) {
-    if (name.length() < 3 || name.length() > max_table_name_length) {
-        throw api_error::validation(
-                format("{} must be at least 3 characters long and at most {} characters long", source, max_table_name_length));
-    }
-    if (!valid_table_name_chars(name)) {
-        throw api_error::validation(
-                format("{} must satisfy regular expression pattern: [a-zA-Z0-9_.-]+", source));
-    }
-}
-
-void validate_cdc_log_name_length(std::string_view table_name) {
-    if (cdc::log_name(table_name).length() > max_auxiliary_table_name_length) {
-        // CDC will add cdc_log_suffix ("_scylla_cdc_log") to the table name
-        // to create its log table, and this will exceed the maximum allowed
-        // length. To provide a more helpful error message, we assume that
-        // cdc::log_name() always adds a suffix of the same length.
-        int suffix_len = cdc::log_name(table_name).length() - table_name.length();
-        throw api_error::validation(fmt::format("Streams or vector search cannot be enabled on a table whose name is longer than {} characters: {}",
-            max_auxiliary_table_name_length - suffix_len, table_name));
-    }
-}
-
-body_writer make_streamed(rjson::value&& value) {
-    return [value = std::move(value)](output_stream<char>&& _out) mutable -> future<> {
-        auto out = std::move(_out);
-        std::exception_ptr ex;
-        try {
-            co_await rjson::print(value, out);
-        } catch (...) {
-            ex = std::current_exception();
-        }
-        co_await out.close();
-        co_await rjson::destroy_gently(std::move(value));
-        if (ex) {
-            co_await coroutine::return_exception_ptr(std::move(ex));
-        }
-    };
-}
-
-} // namespace alternator

alternator/executor_util.hh

@@ -1,247 +0,0 @@
-/*
- * Copyright 2019-present ScyllaDB
- */
-
-/*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
- */
-
-// This header file, and the implementation file executor_util.cc, contain
-// various utility functions that are reused in many different operations
-// (API requests) across Alternator's code - in files such as executor.cc,
-// executor_read.cc, streams.cc, ttl.cc, and more. These utility functions
-// include things like extracting and validating pieces from a JSON request,
-// checking permissions, constructing auxiliary table names, and more.
-
-#pragma once
-
-#include <map>
-#include <optional>
-#include <string>
-#include <string_view>
-#include <unordered_map>
-#include <unordered_set>
-
-#include <seastar/core/future.hh>
-#include <seastar/util/noncopyable_function.hh>
-
-#include "utils/rjson.hh"
-#include "schema/schema_fwd.hh"
-#include "types/types.hh"
-#include "auth/permission.hh"
-#include "alternator/stats.hh"
-#include "alternator/attribute_path.hh"
-#include "utils/managed_bytes.hh"
-
-namespace query { class partition_slice; class result; }
-namespace cql3::selection { class selection; }
-namespace data_dictionary { class database; }
-namespace service { class storage_proxy; class client_state; }
-
-namespace alternator {
-
-/// The body_writer is used for streaming responses - where the response body
-/// is written in chunks to the output_stream. This allows for efficient
-/// handling of large responses without needing to allocate a large buffer in
-/// memory. It is one of the variants of executor::request_return_type.
-using body_writer = noncopyable_function<future<>(output_stream<char>&&)>;
-
-/// Get the value of an integer attribute, or an empty optional if it is
-/// missing. If the attribute exists, but is not an integer, a descriptive
-/// api_error is thrown.
-std::optional<int> get_int_attribute(const rjson::value& value, std::string_view attribute_name);
-
-/// Get the value of a string attribute, or a default value if it is missing.
-/// If the attribute exists, but is not a string, a descriptive api_error is
-/// thrown.
-std::string get_string_attribute(const rjson::value& value, std::string_view attribute_name, const char* default_return);
-
-/// Get the value of a boolean attribute, or a default value if it is missing.
-/// If the attribute exists, but is not a bool, a descriptive api_error is
-/// thrown.
-bool get_bool_attribute(const rjson::value& value, std::string_view attribute_name, bool default_return);
-
-/// Extract table name from a request.
-/// Most requests expect the table's name to be listed in a "TableName" field.
-/// get_table_name() returns the name or api_error in case the table name is
-/// missing or not a string.
-std::string get_table_name(const rjson::value& request);
-
-/// find_table_name() is like get_table_name() except that it returns an
-/// optional table name - it returns an empty optional when the TableName
-/// is missing from the request, instead of throwing as get_table_name()
-/// does. However, find_table_name() still throws if a TableName exists but
-/// is not a string.
-std::optional<std::string> find_table_name(const rjson::value& request);
-
-/// Extract table schema from a request.
-/// Many requests expect the table's name to be listed in a "TableName" field
-/// and need to look it up as an existing table. The get_table() function
-/// does this, with the appropriate validation and api_error in case the table
-/// name is missing, invalid or the table doesn't exist. If everything is
-/// successful, it returns the table's schema.
-schema_ptr get_table(service::storage_proxy& proxy, const rjson::value& request);
-
-/// This find_table() variant is like get_table() excepts that it returns a
-/// nullptr instead of throwing if the request does not mention a TableName.
-/// In other cases of errors (i.e., a table is mentioned but doesn't exist)
-/// this function throws too.
-schema_ptr find_table(service::storage_proxy& proxy, const rjson::value& request);
-
-/// This find_table() variant is like the previous one except that it takes
-/// the table name directly instead of a request object. It is used in cases
-/// where we already have the table name extracted from the request.
-schema_ptr find_table(service::storage_proxy& proxy, std::string_view table_name);
-
-// We would have liked to support table names up to 255 bytes, like DynamoDB.
-// But Scylla creates a directory whose name is the table's name plus 33
-// bytes (dash and UUID), and since directory names are limited to 255 bytes,
-// we need to limit table names to 222 bytes, instead of 255. See issue #4480.
-// We actually have two limits here,
-// * max_table_name_length is the limit that Alternator will impose on names
-//   of new Alternator tables.
-// * max_auxiliary_table_name_length is the potentially higher absolute limit
-//   that Scylla imposes on the names of auxiliary tables that Alternator
-//   wants to create internally - i.e. materialized views or CDC log tables.
-// The second limit might mean that it is not possible to add a GSI to an
-// existing table, because the name of the new auxiliary table may go over
-// the limit. The second limit is also one of the reasons why the first limit
-// is set lower than 222 - to have room to enable streams which add the extra
-// suffix "_scylla_cdc_log" to the table name.
-inline constexpr int max_table_name_length = 192;
-inline constexpr int max_auxiliary_table_name_length = 222;
-
-/// validate_table_name() validates the TableName parameter in a request - it
-/// should be called in CreateTable, and in other requests only when noticing
-/// that the named table doesn't exist. 
-/// The DynamoDB developer guide, https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/HowItWorks.NamingRulesDataTypes.html#HowItWorks.NamingRules
-/// specifies that table "names must be between 3 and 255 characters long and
-/// can contain only the following characters: a-z, A-Z, 0-9, _ (underscore),
-/// - (dash), . (dot)". However, Alternator only allows max_table_name_length
-/// characters (see above) - not 255.
-/// validate_table_name() throws the appropriate api_error if this validation
-/// fails.
-void validate_table_name(std::string_view name, const char* source = "TableName");
-
-/// Validate that a CDC log table could be created for the base table with a
-/// given table_name, and if not, throw a user-visible api_error::validation.
-/// It is not possible to create a CDC log table if the table name is so long
-/// that adding the 15-character suffix "_scylla_cdc_log" (cdc_log_suffix)
-/// makes it go over max_auxiliary_table_name_length.
-/// Note that if max_table_name_length is set to less than 207 (which is
-/// max_auxiliary_table_name_length-15), then this function will never
-/// fail. However, it's still important to call it in UpdateTable, in case
-/// we have pre-existing tables with names longer than this to avoid #24598.
-void validate_cdc_log_name_length(std::string_view table_name);
-
-/// Checks if a keyspace, given by its name, is an Alternator keyspace.
-/// This just checks if the name begins in executor::KEYSPACE_NAME_PREFIX,
-/// a prefix that all keyspaces created by Alternator's CreateTable use.
-bool is_alternator_keyspace(std::string_view ks_name);
-
-/// Wraps db::get_tags_of_table() and throws api_error::validation if the
-/// table is missing the tags extension.
-const std::map<sstring, sstring>& get_tags_of_table_or_throw(schema_ptr schema);
-
-/// Returns a type object representing the type of the ":attrs" column used
-/// by Alternator to store all non-key attribute. This type is a map from
-/// string (attribute name) to bytes (serialized attribute value).
-map_type attrs_type();
-
-// In DynamoDB index names are local to a table, while in Scylla, materialized
-// view names are global (in a keyspace). So we need to compose a unique name
-// for the view taking into account both the table's name and the index name.
-// We concatenate the table and index name separated by a delim character
-// (a character not allowed by DynamoDB in ordinary table names, default: ":").
-// The downside of this approach is that it limits the sum of the lengths,
-// instead of each component individually as DynamoDB does.
-// The view_name() function assumes the table_name has already been validated
-// but validates the legality of index_name and the combination of both.
-std::string view_name(std::string_view table_name, std::string_view index_name,
-        const std::string& delim = ":", bool validate_len = true);
-std::string gsi_name(std::string_view table_name, std::string_view index_name,
-        bool validate_len = true);
-std::string lsi_name(std::string_view table_name, std::string_view index_name,
-        bool validate_len = true);
-
-/// After calling pk_from_json() and ck_from_json() to extract the pk and ck
-/// components of a key, and if that succeeded, call check_key() to further
-/// check that the key doesn't have any spurious components.
-void check_key(const rjson::value& key, const schema_ptr& schema);
-
-/// Fail with api_error::validation if the expression if has unused attribute
-/// names or values. This is how DynamoDB behaves, so we do too.
-void verify_all_are_used(const rjson::value* field,
-        const std::unordered_set<std::string>& used,
-        const char* field_name,
-        const char* operation);
-
-/// Check CQL's Role-Based Access Control (RBAC) permission (MODIFY,
-/// SELECT, DROP, etc.) on the given table. When permission is denied an
-/// appropriate user-readable api_error::access_denied is thrown.
-future<> verify_permission(bool enforce_authorization, bool warn_authorization, const service::client_state&, const schema_ptr&, auth::permission, stats& stats);
-
-/// Similar to verify_permission() above, but just for CREATE operations.
-/// Those do not operate on any specific table, so require permissions on
-/// ALL KEYSPACES instead of any specific table.
-future<> verify_create_permission(bool enforce_authorization, bool warn_authorization, const service::client_state&, stats& stats);
-
-// Sets a KeySchema JSON array inside the given parent object describing the
-// key attributes of the given schema as HASH or RANGE keys. Additionally,
-// adds mappings from key attribute names to their DynamoDB type string into
-// attribute_types.
-void describe_key_schema(rjson::value& parent, const schema&, std::unordered_map<std::string, std::string>* attribute_types = nullptr, const std::map<sstring, sstring>* tags = nullptr);
-
-/// is_big() checks approximately if the given JSON value is "bigger" than
-/// the given big_size number of bytes. The goal is to *quickly* detect
-/// oversized JSON that, for example, is too large to be serialized to a
-/// contiguous string - we don't need an accurate size for that. Moreover,
-/// as soon as we detect that the JSON is indeed "big", we can return true
-/// and don't need to continue calculating its exact size.
-bool is_big(const rjson::value& val, int big_size = 100'000);
-
-/// try_get_internal_table() handles the special case that the given table_name
-/// begins with INTERNAL_TABLE_PREFIX (".scylla.alternator."). In that case,
-/// this function assumes that the rest of the name refers to an internal
-/// Scylla table (e.g., system table) and returns the schema of that table -
-/// or an exception if it doesn't exist. Otherwise, if table_name does not
-/// start with INTERNAL_TABLE_PREFIX, this function returns an empty schema_ptr
-/// and the caller should look for a normal Alternator table with that name.
-schema_ptr try_get_internal_table(const data_dictionary::database& db, std::string_view table_name);
-
-/// get_table_from_batch_request() is used by batch write/read operations to
-/// look up the schema for a table named in a batch request, by the JSON member
-/// name (which is the table name in a BatchWriteItem or BatchGetItem request).
-schema_ptr get_table_from_batch_request(const service::storage_proxy& proxy, const rjson::value::ConstMemberIterator& batch_request);
-
-/// Returns (or lazily creates) the per-table stats object for the given schema.
-/// If the table has been deleted, returns a temporary stats object.
-lw_shared_ptr<stats> get_stats_from_schema(service::storage_proxy& sp, const schema& schema);
-
-/// Writes one item's attributes into `item` from the given selection result
-/// row. If include_all_embedded_attributes is true, all attributes from the
-/// ATTRS_COLUMN map column are included regardless of attrs_to_get.
-void describe_single_item(const cql3::selection::selection&,
-    const std::vector<managed_bytes_opt>&,
-    const std::optional<attrs_to_get>&,
-    rjson::value&,
-    uint64_t* item_length_in_bytes = nullptr,
-    bool include_all_embedded_attributes = false);
-
-/// Converts a single result row to a JSON item, or returns an empty optional
-/// if the result is empty.
-std::optional<rjson::value> describe_single_item(schema_ptr,
-    const query::partition_slice&,
-    const cql3::selection::selection&,
-    const query::result&,
-    const std::optional<attrs_to_get>&,
-    uint64_t* item_length_in_bytes = nullptr);
-
-/// Make a body_writer (function that can write output incrementally to the
-/// HTTP stream) from the given JSON object.
-/// Note: only useful for (very) large objects as there are overhead issues
-/// with this as well, but for massive lists of return objects this can
-/// help avoid large allocations/many re-allocs.
-body_writer make_streamed(rjson::value&&);
-
-} // namespace alternator

alternator/expressions.cc

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #include "expressions.hh"
@@ -744,7 +744,7 @@ void validate_attr_name_length(std::string_view supplementary_context, size_t at
     constexpr const size_t DYNAMODB_NONKEY_ATTR_NAME_SIZE_MAX = 65535;
 
     const size_t max_length = is_key ? DYNAMODB_KEY_ATTR_NAME_SIZE_MAX : DYNAMODB_NONKEY_ATTR_NAME_SIZE_MAX;
-    if (attr_name_length > max_length || attr_name_length == 0) {
+    if (attr_name_length > max_length) {
         std::string error_msg;
         if (!error_msg_prefix.empty()) {
             error_msg += error_msg_prefix;
@@ -754,11 +754,7 @@ void validate_attr_name_length(std::string_view supplementary_context, size_t at
             error_msg += supplementary_context;
             error_msg += " - ";
         }
-        if (attr_name_length == 0) {
-            error_msg += "Empty attribute name";
-        } else {
-            error_msg += fmt::format("Attribute name is too large, must be less than {} bytes", std::to_string(max_length + 1));
-        }
+        error_msg += fmt::format("Attribute name is too large, must be less than {} bytes", std::to_string(max_length + 1));
         throw api_error::validation(error_msg);
     }
 }

alternator/expressions.g

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 /*
@@ -91,18 +91,6 @@ options {
         throw expressions_syntax_error(format("{} at char {}", err,
             ex->get_charPositionInLine()));
     }
-
-    // ANTLR3 tries to recover missing tokens - it tries to finish parsing
-    // and create valid objects, as if the missing token was there.
-    // But it has a bug and leaks these tokens.
-    // We override offending method and handle abandoned pointers.
-    std::vector<std::unique_ptr<TokenType>> _missing_tokens;
-    TokenType* getMissingSymbol(IntStreamType* istream, ExceptionBaseType* e,
-                                ANTLR_UINT32 expectedTokenType, BitsetListType* follow) {
-        auto token = BaseType::getMissingSymbol(istream, e, expectedTokenType, follow);
-        _missing_tokens.emplace_back(token);
-        return token;
-    }
 }
 @lexer::context {
     void displayRecognitionError(ANTLR_UINT8** token_names, ExceptionBaseType* ex) {
@@ -196,13 +184,7 @@ 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 ']'           {
-                try {
-                    $p.add_index(std::stoi($INTEGER.text));
-                } catch(std::out_of_range&) {
-                    throw expressions_syntax_error("list index out of integer range");
-                }
-            }
+      | '[' INTEGER ']'           { $p.add_index(std::stoi($INTEGER.text)); }
     )*;
 
 /* See comment above why the "depth" counter was needed here */
@@ -248,7 +230,7 @@ update_expression_clause returns [parsed::update_expression e]:
 // 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($update_expression_clause.e); })+ EOF;
+    (update_expression_clause { e.append($update_expression_clause.e); })* EOF;
 
 projection_expression returns [std::vector<parsed::path> v]:
     p=path      { $v.push_back(std::move($p.p)); }
@@ -275,13 +257,6 @@ primitive_condition returns [parsed::primitive_condition c]:
          (',' v=value[0] { $c.add_value(std::move($v.v)); })*
          ')'
       )?
-      {
-          // Post-parse check to reject non-function single values
-          if ($c._op == parsed::primitive_condition::type::VALUE &&
-              !$c._values.front().is_func()) {
-              throw expressions_syntax_error("Single value must be a function");
-          }
-      }
     ;
 
 // The following rules for parsing boolean expressions are verbose and

alternator/expressions.hh

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #pragma once
@@ -18,8 +18,6 @@
 
 #include "expressions_types.hh"
 #include "utils/rjson.hh"
-#include "utils/updateable_value.hh"
-#include "stats.hh"
 
 namespace alternator {
 
@@ -28,26 +26,6 @@ public:
     using runtime_error::runtime_error;
 };
 
-namespace parsed {
-class expression_cache_impl;
-class expression_cache {
-    std::unique_ptr<expression_cache_impl> _impl;
-public:
-    struct config {
-        utils::updateable_value<uint32_t> max_cache_entries;
-    };
-    expression_cache(config cfg, stats& stats);
-    ~expression_cache();
-    // stop background tasks, if any
-    future<> stop();
-
-    update_expression parse_update_expression(std::string_view query);
-    std::vector<path> parse_projection_expression(std::string_view query);
-    condition_expression parse_condition_expression(std::string_view query, const char* caller);
-};
-} // namespace parsed
-
-// Preferably use parsed::expression_cache instance instead of this free functions.
 parsed::update_expression parse_update_expression(std::string_view query);
 std::vector<parsed::path> parse_projection_expression(std::string_view query);
 parsed::condition_expression parse_condition_expression(std::string_view query, const char* caller);

alternator/expressions_types.hh

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #pragma once
@@ -50,7 +50,7 @@ public:
         _operators.emplace_back(i);
         check_depth_limit();
     }
-    void add_dot(std::string name) {
+    void add_dot(std::string(name)) {
         _operators.emplace_back(std::move(name));
         check_depth_limit();
     }
@@ -85,7 +85,7 @@ struct constant {
     }
 };
 
-// "value" is a value used in the right hand side of an assignment
+// "value" is is a value used in the right hand side of an assignment
 // expression, "SET a = ...". It can be a constant (a reference to a value
 // included in the request, e.g., ":val"), a path to an attribute from the
 // existing item (e.g., "a.b[3].c"), or a function of other such values.
@@ -205,11 +205,13 @@ public:
 // 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 above (only the size()
+//    (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.).
+// 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 {

alternator/extract_from_attrs.hh

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #pragma once
@@ -13,7 +13,7 @@
 
 #include "utils/rjson.hh"
 #include "serialization.hh"
-#include "schema/column_computation.hh"
+#include "column_computation.hh"
 #include "db/view/regular_column_transformation.hh"
 
 namespace alternator {

alternator/http_compression.cc

@@ -1,301 +0,0 @@
-/*
- * Copyright 2025-present ScyllaDB
- */
-
-/*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
- */
-
-#include "alternator/http_compression.hh"
-#include "alternator/server.hh"
-#include <seastar/coroutine/maybe_yield.hh>
-#include <zlib.h>
-
-static logging::logger slogger("alternator-http-compression");
-
-namespace alternator {
-
-
-static constexpr size_t compressed_buffer_size = 1024;
-class zlib_compressor {
-    z_stream _zs;
-    temporary_buffer<char> _output_buf;
-    noncopyable_function<future<>(temporary_buffer<char>&&)> _write_func;
-public:
-    zlib_compressor(bool gzip, int compression_level, noncopyable_function<future<>(temporary_buffer<char>&&)> write_func)
-     : _write_func(std::move(write_func)) {
-        memset(&_zs, 0, sizeof(_zs));
-        if (deflateInit2(&_zs, std::clamp(compression_level, Z_NO_COMPRESSION, Z_BEST_COMPRESSION), Z_DEFLATED,
-                (gzip ? 16 : 0) + MAX_WBITS, 8, Z_DEFAULT_STRATEGY) != Z_OK) {
-            // Should only happen if memory allocation fails
-            throw std::bad_alloc();
-        }
-    }
-    ~zlib_compressor() {
-        deflateEnd(&_zs);
-    }
-    future<> close() {
-        return compress(nullptr, 0, true);
-    }
-
-    future<> compress(const char* buf, size_t len, bool is_last_chunk = false) {
-        _zs.next_in = reinterpret_cast<unsigned char*>(const_cast<char*>(buf));
-        _zs.avail_in = (uInt) len;
-        int mode = is_last_chunk ? Z_FINISH : Z_NO_FLUSH;
-        while(_zs.avail_in > 0 || is_last_chunk) {
-            co_await coroutine::maybe_yield();
-            if (_output_buf.empty()) {
-                if (is_last_chunk) {
-                    uint32_t max_buffer_size = 0;
-                    deflatePending(&_zs, &max_buffer_size, nullptr);
-                    max_buffer_size += deflateBound(&_zs, _zs.avail_in) + 1;
-                    _output_buf = temporary_buffer<char>(std::min(compressed_buffer_size, (size_t) max_buffer_size));
-                } else {
-                    _output_buf = temporary_buffer<char>(compressed_buffer_size);
-                }
-                _zs.next_out = reinterpret_cast<unsigned char*>(_output_buf.get_write());
-                _zs.avail_out = compressed_buffer_size;
-            }
-            int e = deflate(&_zs, mode);
-            if (e < Z_OK) {
-                throw api_error::internal("Error during compression of response body");
-            }
-            if (e == Z_STREAM_END || _zs.avail_out < compressed_buffer_size / 4) {
-                _output_buf.trim(compressed_buffer_size - _zs.avail_out);
-                co_await _write_func(std::move(_output_buf));
-                if (e == Z_STREAM_END) {
-                    break;
-                }
-            }
-        }
-    }
-};
-
-// Helper string_view functions for parsing Accept-Encoding header
-struct case_insensitive_cmp_sv {
-    bool operator()(std::string_view s1, std::string_view s2) const {
-        return std::equal(s1.begin(), s1.end(), s2.begin(), s2.end(),
-            [](char a, char b) { return ::tolower(a) == ::tolower(b); });
-    }
-};
-static inline std::string_view trim_left(std::string_view sv) {
-    while (!sv.empty() && std::isspace(static_cast<unsigned char>(sv.front())))
-        sv.remove_prefix(1);
-    return sv;
-}
-static inline std::string_view trim_right(std::string_view sv) {
-    while (!sv.empty() && std::isspace(static_cast<unsigned char>(sv.back())))
-        sv.remove_suffix(1);
-    return sv;
-}
-static inline std::string_view trim(std::string_view sv) {
-    return trim_left(trim_right(sv));
-}
-
-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;
-}
-
-constexpr response_compressor::compression_type response_compressor::get_compression_type(std::string_view encoding) {
-    for (size_t i = 0; i < static_cast<size_t>(compression_type::count); ++i) {
-        if (case_insensitive_cmp_sv{}(encoding, compression_names[i])) {
-            return static_cast<compression_type>(i);
-        }
-    }
-    return compression_type::unknown;
-}
-
-response_compressor::compression_type response_compressor::find_compression(std::string_view accept_encoding, size_t response_size) {
-    std::optional<float> ct_q[static_cast<size_t>(compression_type::count)];
-    ct_q[static_cast<size_t>(compression_type::none)] = std::numeric_limits<float>::min(); // enabled, but lowest priority
-    compression_type selected_ct = compression_type::none;
-
-    std::vector<std::string_view> entries = split(accept_encoding, ',');
-    for (auto& e : entries) {
-        std::vector<std::string_view> params = split(e, ';');
-        if (params.size() == 0) {
-            continue;
-        }
-        compression_type ct = get_compression_type(trim(params[0]));
-        if (ct == compression_type::unknown) {
-            continue; // ignore unknown encoding types
-        }
-        if (ct_q[static_cast<size_t>(ct)].has_value() && ct_q[static_cast<size_t>(ct)] != 0.0f) {
-            continue; // already processed this encoding
-        }
-        if (response_size < _threshold[static_cast<size_t>(ct)]) {
-            continue; // below threshold treat as unknown
-        }
-        for (size_t i = 1; i < params.size(); ++i) { // find "q=" parameter
-            auto pos = params[i].find("q=");
-            if (pos == std::string_view::npos) {
-                continue;
-            }
-            std::string_view param = params[i].substr(pos + 2);
-            param = trim(param);
-            // parse quality value
-            float q_value = 1.0f;
-            auto [ptr, ec] = std::from_chars(param.data(), param.data() + param.size(), q_value);
-            if (ec != std::errc() || ptr != param.data() + param.size()) {
-                continue;
-            }
-            if (q_value < 0.0) {
-                q_value = 0.0;
-            } else if (q_value > 1.0) {
-                q_value = 1.0;
-            }
-            ct_q[static_cast<size_t>(ct)] = q_value;
-            break; // we parsed quality value
-        }
-        if (!ct_q[static_cast<size_t>(ct)].has_value()) {
-            ct_q[static_cast<size_t>(ct)] = 1.0f; // default quality value
-        }
-        // keep the highest encoding (in the order, unless 'any')
-        if (selected_ct == compression_type::any) {
-            if (ct_q[static_cast<size_t>(ct)] >= ct_q[static_cast<size_t>(selected_ct)]) {
-                selected_ct = ct;
-            }
-        } else {
-            if (ct_q[static_cast<size_t>(ct)] > ct_q[static_cast<size_t>(selected_ct)]) {
-                selected_ct = ct;
-            }
-        }
-    }
-    if (selected_ct == compression_type::any) {
-        // select any not mentioned or highest quality
-        selected_ct = compression_type::none;
-        for (size_t i = 0; i < static_cast<size_t>(compression_type::compressions_count); ++i) {
-            if (!ct_q[i].has_value()) {
-                return static_cast<compression_type>(i);
-            }
-            if (ct_q[i] > ct_q[static_cast<size_t>(selected_ct)]) {
-                selected_ct = static_cast<compression_type>(i);
-            }
-        }
-    }
-    return selected_ct;
-}
-
-static future<chunked_content> compress(response_compressor::compression_type ct, const db::config& cfg, std::string str) {
-    chunked_content compressed;
-    auto write = [&compressed](temporary_buffer<char>&& buf) -> future<> {
-        compressed.push_back(std::move(buf));
-        return make_ready_future<>();
-    };
-    zlib_compressor compressor(ct != response_compressor::compression_type::deflate,
-        cfg.alternator_response_gzip_compression_level(), std::move(write));
-    co_await compressor.compress(str.data(), str.size(), true);
-    co_return compressed;
-}
-
-static sstring flatten(chunked_content&& cc) {
-    size_t total_size = 0;
-    for (const auto& chunk : cc) {
-        total_size += chunk.size();
-    }
-    sstring result = sstring{ sstring::initialized_later{}, total_size };
-    size_t offset = 0;
-    for (const auto& chunk : cc) {
-        std::copy(chunk.begin(), chunk.end(), result.begin() + offset);
-        offset += chunk.size();
-    }
-    return result;
-}
-
-future<std::unique_ptr<http::reply>> response_compressor::generate_reply(std::unique_ptr<http::reply> rep, sstring accept_encoding, const char* content_type, std::string&& response_body) {
-    response_compressor::compression_type ct = find_compression(accept_encoding, response_body.size());
-    if (ct != response_compressor::compression_type::none) {
-        rep->add_header("Content-Encoding", get_encoding_name(ct));
-        rep->set_content_type(content_type);
-        return compress(ct, cfg, std::move(response_body)).then([rep = std::move(rep)] (chunked_content compressed) mutable {
-            rep->_content = flatten(std::move(compressed));
-            return make_ready_future<std::unique_ptr<http::reply>>(std::move(rep));
-        });
-    } else {
-        // Note that despite the move, there is a copy here -
-        // as str is std::string and rep->_content is sstring.
-        rep->_content = std::move(response_body);
-        rep->set_content_type(content_type);
-    }
-    return make_ready_future<std::unique_ptr<http::reply>>(std::move(rep));
-}
-
-template<typename Compressor>
-class compressed_data_sink_impl : public data_sink_impl {
-    output_stream<char> _out;
-    Compressor _compressor;
-public:
-    template<typename... Args>
-    compressed_data_sink_impl(output_stream<char>&& out, Args&&... args)
-     : _out(std::move(out)), _compressor(std::forward<Args>(args)..., [this](temporary_buffer<char>&& buf) {
-        return _out.write(std::move(buf));
-    }) { }
-
-    future<> put(std::span<temporary_buffer<char>> data) override {
-        return data_sink_impl::fallback_put(data, [this] (temporary_buffer<char>&& buf) {
-            return do_put(std::move(buf));
-        });
-    }
-
-private:
-    future<> do_put(temporary_buffer<char> buf) {
-        co_return co_await _compressor.compress(buf.get(), buf.size());
-
-    }
-    future<> close() override {
-        return _compressor.close().then([this] {
-            return _out.close();
-        });
-    }
-};
-
-body_writer compress(response_compressor::compression_type ct, const db::config& cfg, body_writer&& bw) {
-    return [bw = std::move(bw), ct, level = cfg.alternator_response_gzip_compression_level()](output_stream<char>&& out) mutable -> future<> {
-        output_stream_options opts;
-        opts.trim_to_size = true;
-        std::unique_ptr<data_sink_impl> data_sink_impl;
-        switch (ct) {
-            case response_compressor::compression_type::gzip:
-                data_sink_impl = std::make_unique<compressed_data_sink_impl<zlib_compressor>>(std::move(out), true, level);
-                break;
-            case response_compressor::compression_type::deflate:
-                data_sink_impl = std::make_unique<compressed_data_sink_impl<zlib_compressor>>(std::move(out), false, level);
-                break;
-            case response_compressor::compression_type::none:
-            case response_compressor::compression_type::any:
-            case response_compressor::compression_type::unknown:
-                on_internal_error(slogger,"Compression not selected");
-            default:
-                on_internal_error(slogger, "Unsupported compression type for data sink");
-        }
-        return bw(output_stream<char>(data_sink(std::move(data_sink_impl)), compressed_buffer_size, opts));
-    };
-}
-
-future<std::unique_ptr<http::reply>> response_compressor::generate_reply(std::unique_ptr<http::reply> rep, sstring accept_encoding, const char* content_type, body_writer&& body_writer) {
-    response_compressor::compression_type ct = find_compression(accept_encoding, std::numeric_limits<size_t>::max());
-    if (ct != response_compressor::compression_type::none) {
-        rep->add_header("Content-Encoding", get_encoding_name(ct));
-        rep->write_body(content_type, compress(ct, cfg, std::move(body_writer)));
-    } else {
-        rep->write_body(content_type, std::move(body_writer));
-    }
-    return make_ready_future<std::unique_ptr<http::reply>>(std::move(rep));
-}
-
-} // namespace alternator

alternator/http_compression.hh

@@ -1,91 +0,0 @@
-/*
- * Copyright 2025-present ScyllaDB
- */
-
-/*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
- */
-
-#pragma once
-
-#include "alternator/executor.hh"
-#include <seastar/http/httpd.hh>
-#include "db/config.hh"
-
-namespace alternator {
-
-class response_compressor {
-public:
-    enum class compression_type {
-        gzip,
-        deflate,
-        compressions_count,
-        any = compressions_count,
-        none,
-        count,
-        unknown = count
-    };
-    static constexpr std::string_view compression_names[] = {
-        "gzip",
-        "deflate",
-        "*",
-        "identity"
-    };
-
-    static sstring get_encoding_name(compression_type ct) {
-        return sstring(compression_names[static_cast<size_t>(ct)]);
-    }
-    static constexpr compression_type get_compression_type(std::string_view encoding);
-
-    sstring get_accepted_encoding(const http::request& req) {
-        if (get_threshold() == 0) {
-            return "";
-        }
-        return req.get_header("Accept-Encoding");
-    }
-    compression_type find_compression(std::string_view accept_encoding, size_t response_size);
-
-    response_compressor(const db::config& cfg)
-        : cfg(cfg)
-        ,_gzip_level_observer(
-            cfg.alternator_response_gzip_compression_level.observe([this](int v) {
-                    update_threshold();
-                }))
-        ,_gzip_threshold_observer(
-            cfg.alternator_response_compression_threshold_in_bytes.observe([this](uint32_t v) {
-                    update_threshold();
-                }))
-    {
-        update_threshold();
-    }
-    response_compressor(const response_compressor& rhs) : response_compressor(rhs.cfg) {}
-
-private:
-    const db::config& cfg;
-    utils::observable<int>::observer _gzip_level_observer;
-    utils::observable<uint32_t>::observer _gzip_threshold_observer;
-    uint32_t _threshold[static_cast<size_t>(compression_type::count)];
-
-    size_t get_threshold() { return _threshold[static_cast<size_t>(compression_type::any)]; }
-    void update_threshold() {
-        _threshold[static_cast<size_t>(compression_type::none)] = std::numeric_limits<uint32_t>::max();
-        _threshold[static_cast<size_t>(compression_type::any)] = std::numeric_limits<uint32_t>::max();
-        uint32_t gzip = cfg.alternator_response_gzip_compression_level() <= 0 ? std::numeric_limits<uint32_t>::max()
-            : cfg.alternator_response_compression_threshold_in_bytes();
-        _threshold[static_cast<size_t>(compression_type::gzip)] = gzip;
-        _threshold[static_cast<size_t>(compression_type::deflate)] = gzip;
-        for (size_t i = 0; i < static_cast<size_t>(compression_type::compressions_count); ++i) {
-            if (_threshold[i] < _threshold[static_cast<size_t>(compression_type::any)]) {
-                _threshold[static_cast<size_t>(compression_type::any)] = _threshold[i];
-            }
-        }
-    }
-
-public:
-    future<std::unique_ptr<http::reply>> generate_reply(std::unique_ptr<http::reply> rep,
-         sstring accept_encoding, const char* content_type, std::string&& response_body);
-    future<std::unique_ptr<http::reply>> generate_reply(std::unique_ptr<http::reply> rep,
-         sstring accept_encoding, const char* content_type, body_writer&& body_writer);
-};
-
-}

alternator/parsed_expression_cache.cc

@@ -1,109 +0,0 @@
-/*
- * Copyright 2025-present ScyllaDB
- */
-
-/*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
- */
-
-#include "expressions.hh"
-#include "utils/log.hh"
-
-#include "utils/lru_string_map.hh"
-#include <variant>
-
-static logging::logger logger_("parsed-expression-cache");
-
-namespace alternator::parsed {
-
-struct expression_cache_impl {
-    stats& _stats;
-
-    using cached_expressions_types = std::variant<
-        update_expression,
-        condition_expression,
-        std::vector<path>
-    >;
-    sized_lru_string_map<cached_expressions_types> _cached_entries;
-    utils::observable<uint32_t>::observer _max_cache_entries_observer;
-
-    expression_cache_impl(expression_cache::config cfg, stats& stats);
-
-    // to define the specialized return type of `get_or_create()`
-    template <typename Func, typename... Args>
-    using ParseResult = std::invoke_result_t<Func, std::string_view, Args...>;
-
-    // Caching layer for parsed expressions
-    // The expression type is determined by the type of the parsing function passed as a parameter,
-    // and the return type is exactly the same as the return type of this parsing function.
-    // StatsType is used only to update appropriate statistics - currently it is aligned with the expression type,
-    // but it could be extended in the future if needed, e.g. split per operation.
-    template <stats::expression_types StatsType, typename Func, typename... Args>
-    ParseResult<Func, Args...> get_or_create(std::string_view query, Func&& parse_func, Args&&... other_args) {
-        if (_cached_entries.disabled()) {
-            return parse_func(query, std::forward<Args>(other_args)...);
-        }
-        if (!_cached_entries.sanity_check()) {
-            _stats.expression_cache.requests[StatsType].misses++;
-            return parse_func(query, std::forward<Args>(other_args)...);
-        }
-        auto value = _cached_entries.find(query);
-        if (value) {
-            logger_.trace("Cache hit for query: {}", query);
-            _stats.expression_cache.requests[StatsType].hits++;
-            try {
-                return std::get<ParseResult<Func, Args...>>(value->get());
-            } catch (const std::bad_variant_access&) {
-                // User can reach this code, by sending the same query string as a different expression type.
-                // In practice valid queries are different enough to not collide.
-                // Entries in cache are only valid queries.
-                // This request will fail at parsing below.
-                // If, by any chance this is a valid query, it will be updated below with the new value.
-                logger_.trace("Cache hit for '{}', but type mismatch.", query);
-                _stats.expression_cache.requests[StatsType].hits--;
-            }
-        } else {
-            logger_.trace("Cache miss for query: {}", query);
-        }
-        ParseResult<Func, Args...> expr = parse_func(query, std::forward<Args>(other_args)...);
-        // Invalid query will throw here ^
-
-        _stats.expression_cache.requests[StatsType].misses++;
-        if (value) [[unlikely]] {
-            value->get() = cached_expressions_types{expr};
-        } else {
-            _cached_entries.insert(query, cached_expressions_types{expr});
-        }
-        return expr;
-    }
-};
-
-expression_cache_impl::expression_cache_impl(expression_cache::config cfg, stats& stats) : 
-    _stats(stats), _cached_entries(logger_, _stats.expression_cache.evictions),
-    _max_cache_entries_observer(cfg.max_cache_entries.observe([this] (uint32_t max_value) {
-        _cached_entries.set_max_size(max_value);
-    })) {
-    _cached_entries.set_max_size(cfg.max_cache_entries());
-}
-
-expression_cache::expression_cache(expression_cache::config cfg, stats& stats) : 
-    _impl(std::make_unique<expression_cache_impl>(std::move(cfg), stats)) {
-}
-expression_cache::~expression_cache() = default;
-future<> expression_cache::stop() {
-    return _impl->_cached_entries.stop();
-}
-
-update_expression expression_cache::parse_update_expression(std::string_view query) {
-    return _impl->get_or_create<stats::expression_types::UPDATE_EXPRESSION>(query, alternator::parse_update_expression);
-}
-
-std::vector<path> expression_cache::parse_projection_expression(std::string_view query) {
-    return _impl->get_or_create<stats::expression_types::PROJECTION_EXPRESSION>(query, alternator::parse_projection_expression);
-}
-
-condition_expression expression_cache::parse_condition_expression(std::string_view query, const char* caller) {
-    return _impl->get_or_create<stats::expression_types::CONDITION_EXPRESSION>(query, alternator::parse_condition_expression, caller);
-}
-
-} // namespace alternator::parsed

alternator/rmw_operation.hh

@@ -3,21 +3,18 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #pragma once
 
-#include "cdc/cdc_options.hh"
-#include "cdc/log.hh"
 #include "seastarx.hh"
 #include "service/paxos/cas_request.hh"
-#include "service/cas_shard.hh"
 #include "utils/rjson.hh"
 #include "consumed_capacity.hh"
 #include "executor.hh"
 #include "tracing/trace_state.hh"
-#include "keys/keys.hh"
+#include "keys.hh"
 
 namespace alternator {
 
@@ -58,7 +55,7 @@ public:
     static write_isolation get_write_isolation_for_schema(schema_ptr schema);
 
     static write_isolation default_write_isolation;
-
+public:
     static void set_default_write_isolation(std::string_view mode);
 
 protected:
@@ -109,16 +106,14 @@ public:
     // 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, cdc::per_request_options& cdc_opts) const = 0;
+    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(foreign_ptr<lw_shared_ptr<query::result>> qr, const query::partition_slice& slice, api::timestamp_type ts, cdc::per_request_options& cdc_opts) override;
+    virtual std::optional<mutation> apply(foreign_ptr<lw_shared_ptr<query::result>> qr, const query::partition_slice& slice, api::timestamp_type ts) override;
     virtual ~rmw_operation() = default;
-    const wcu_consumed_capacity_counter& consumed_capacity() const noexcept { return _consumed_capacity; }
     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,
-            std::optional<service::cas_shard> cas_shard,
             service::client_state& client_state,
             tracing::trace_state_ptr trace_state,
             service_permit permit,
@@ -126,10 +121,7 @@ public:
             stats& global_stats,
             stats& per_table_stats,
             uint64_t& wcu_total);
-    std::optional<service::cas_shard> shard_for_execute(bool needs_read_before_write);
-
-private:
-    inline bool should_fill_preimage() const { return _schema->cdc_options().enabled(); }
+    std::optional<shard_id> shard_for_execute(bool needs_read_before_write);
 };
 
 } // namespace alternator

alternator/serialization.cc

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #include "utils/base64.hh"
@@ -11,15 +11,15 @@
 #include "utils/log.hh"
 #include "serialization.hh"
 #include "error.hh"
-#include "types/concrete_types.hh"
-#include "types/json_utils.hh"
+#include "concrete_types.hh"
+#include "cql3/type_json.hh"
 #include "mutation/position_in_partition.hh"
-#include "alternator/executor_util.hh"
 
 static logging::logger slogger("alternator-serialization");
 
 namespace alternator {
 
+bool is_alternator_keyspace(const sstring& ks_name);
 
 type_info type_info_from_string(std::string_view type) {
     static thread_local const std::unordered_map<std::string_view, type_info> type_infos = {
@@ -282,23 +282,15 @@ std::string type_to_string(data_type type) {
     return it->second;
 }
 
-std::optional<bytes> try_get_key_column_value(const rjson::value& item, const column_definition& column) {
+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) {
-        return std::nullopt;
+        throw api_error::validation(fmt::format("Key column {} not found", column_name));
     }
     return get_key_from_typed_value(*key_typed_value, column);
 }
 
-bytes get_key_column_value(const rjson::value& item, const column_definition& column) {
-    auto value = try_get_key_column_value(item, column);
-    if (!value) {
-        throw api_error::validation(fmt::format("Key column {} not found", column.name_as_text()));
-    }
-    return std::move(*value);
-}
-
 // Parses the JSON encoding for a key value, which is a map with a single
 // entry whose key is the type and the value is the encoded value.
 // If this type does not match the desired "type_str", an api_error::validation
@@ -388,38 +380,20 @@ clustering_key ck_from_json(const rjson::value& item, schema_ptr schema) {
         return clustering_key::make_empty();
     }
     std::vector<bytes> raw_ck;
-    // Note: it's possible to get more than one clustering column here, as
-    // Alternator can be used to read scylla internal tables.
+    // FIXME: this is a loop, but we really allow only one clustering key column.
     for (const column_definition& cdef : schema->clustering_key_columns()) {
-        auto raw_value = get_key_column_value(item,  cdef);
+        bytes raw_value = get_key_column_value(item,  cdef);
         raw_ck.push_back(std::move(raw_value));
     }
 
     return clustering_key::from_exploded(raw_ck);
 }
 
-clustering_key_prefix ck_prefix_from_json(const rjson::value& item, schema_ptr schema) {
-    if (schema->clustering_key_size() == 0) {
-        return clustering_key_prefix::make_empty();
-    }
-    std::vector<bytes> raw_ck;
-    for (const column_definition& cdef : schema->clustering_key_columns()) {
-        auto raw_value = try_get_key_column_value(item,  cdef);
-        if (!raw_value) {
-            break;
-        }
-        raw_ck.push_back(std::move(*raw_value));
-    }
-
-    return clustering_key_prefix::from_exploded(raw_ck);
-}
-
 position_in_partition pos_from_json(const rjson::value& item, schema_ptr schema) {
-    const bool is_alternator_ks = is_alternator_keyspace(schema->ks_name());
-    if (is_alternator_ks) {
-        return position_in_partition::for_key(ck_from_json(item, schema));
+    auto ck = ck_from_json(item, schema);
+    if (is_alternator_keyspace(schema->ks_name())) {
+        return position_in_partition::for_key(std::move(ck));
     }
-    
     const auto region_item = rjson::find(item, scylla_paging_region);
     const auto weight_item = rjson::find(item, scylla_paging_weight);
     if (bool(region_item) != bool(weight_item)) {
@@ -439,9 +413,8 @@ position_in_partition pos_from_json(const rjson::value& item, schema_ptr schema)
         } else {
             throw std::runtime_error(fmt::format("Invalid value for weight: {}", weight_view));
         }
-        return position_in_partition(region, weight, region == partition_region::clustered ? std::optional(ck_prefix_from_json(item, schema)) : std::nullopt);
+        return position_in_partition(region, weight, region == partition_region::clustered ? std::optional(std::move(ck)) : std::nullopt);
     }
-    auto ck = ck_from_json(item, schema);
     if (ck.is_empty()) {
         return position_in_partition::for_partition_start();
     }
@@ -496,7 +469,7 @@ const std::pair<std::string, const rjson::value*> unwrap_set(const rjson::value&
         return {"", nullptr};
     }
     auto it = v.MemberBegin();
-    const std::string it_key = rjson::to_string(it->name);
+    const std::string it_key = it->name.GetString();
     if (it_key != "SS" && it_key != "BS" && it_key != "NS") {
         return {std::move(it_key), nullptr};
     }

alternator/serialization.hh

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #pragma once
@@ -13,7 +13,7 @@
 #include <optional>
 #include "types/types.hh"
 #include "schema/schema_fwd.hh"
-#include "keys/keys.hh"
+#include "keys.hh"
 #include "utils/rjson.hh"
 #include "utils/big_decimal.hh"
 
@@ -55,7 +55,7 @@ partition_key pk_from_json(const rjson::value& item, schema_ptr schema);
 clustering_key ck_from_json(const rjson::value& item, schema_ptr schema);
 position_in_partition pos_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,
+// 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);
 

alternator/server.cc

@@ -3,19 +3,16 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #include "alternator/server.hh"
-#include "audit/audit.hh"
-#include "alternator/executor_util.hh"
 #include "gms/application_state.hh"
 #include "utils/log.hh"
 #include <fmt/ranges.h>
 #include <seastar/http/function_handlers.hh>
 #include <seastar/http/short_streams.hh>
 #include <seastar/core/coroutine.hh>
-#include <seastar/coroutine/maybe_yield.hh>
 #include <seastar/util/defer.hh>
 #include <seastar/util/short_streams.hh>
 #include "seastarx.hh"
@@ -33,10 +30,6 @@
 #include "gms/gossiper.hh"
 #include "utils/overloaded_functor.hh"
 #include "utils/aws_sigv4.hh"
-#include "client_data.hh"
-#include "utils/updateable_value.hh"
-#include <zlib.h>
-#include "alternator/http_compression.hh"
 
 static logging::logger slogger("alternator-server");
 
@@ -106,20 +99,10 @@ static void handle_CORS(const request& req, reply& rep, bool preflight) {
 // the user directly. Other exceptions are unexpected, and reported as
 // Internal Server Error.
 class api_handler : public handler_base {
-    // Although the the DynamoDB API responses are JSON, additional
-    // conventions apply to these responses. For this reason, DynamoDB uses
-    // the content type "application/x-amz-json-1.0" instead of the standard
-    // "application/json". Some other AWS services use later versions instead
-    // of "1.0", but DynamoDB currently uses "1.0". Note that this content
-    // type applies to all replies, both success and error.
-    static constexpr const char* REPLY_CONTENT_TYPE = "application/x-amz-json-1.0";
 public:
-    api_handler(const std::function<future<executor::request_return_type>(std::unique_ptr<request> req)>& _handle,
-                const db::config& config) : _response_compressor(config), _f_handle(
+    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) {
-         sstring accept_encoding = _response_compressor.get_accepted_encoding(*req);
-         return seastar::futurize_invoke(_handle, std::move(req)).then_wrapped(
-            [this, rep = std::move(rep), accept_encoding=std::move(accept_encoding)](future<executor::request_return_type> resf) mutable {
+         return seastar::futurize_invoke(_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
@@ -139,20 +122,25 @@ public:
                  return make_ready_future<std::unique_ptr<reply>>(std::move(rep));
              }
              auto res = resf.get();
-             return std::visit(overloaded_functor {
+             std::visit(overloaded_functor {
                 [&] (std::string&& str) {
-                    return _response_compressor.generate_reply(std::move(rep), std::move(accept_encoding),
-                                                               REPLY_CONTENT_TYPE, std::move(str));
+                    // Note that despite the move, there is a copy here -
+                    // as str is std::string and rep->_content is sstring.
+                    rep->_content = std::move(str);
                 },
-                [&] (body_writer&& body_writer) {
-                    return _response_compressor.generate_reply(std::move(rep), std::move(accept_encoding),
-                                                               REPLY_CONTENT_TYPE, std::move(body_writer));
+                [&] (executor::body_writer&& body_writer) {
+                    // Unfortunately, write_body() forces us to choose
+                    // from a fixed and irrelevant list of "mime-types"
+                    // at this point. But we'll override it with the
+                    // correct one (application/x-amz-json-1.0) below.
+                    rep->write_body("json", std::move(body_writer));
                 },
                 [&] (const api_error& err) {
                     generate_error_reply(*rep, err);
-                    return make_ready_future<std::unique_ptr<reply>>(std::move(rep));
                 }
              }, std::move(res));
+
+             return make_ready_future<std::unique_ptr<reply>>(std::move(rep));
          });
     }) { }
 
@@ -162,6 +150,7 @@ public:
         handle_CORS(*req, *rep, false);
         return _f_handle(std::move(req), std::move(rep)).then(
                 [](std::unique_ptr<reply> rep) {
+                    rep->set_mime_type("application/x-amz-json-1.0");
                     rep->done();
                     return make_ready_future<std::unique_ptr<reply>>(std::move(rep));
                 });
@@ -177,11 +166,9 @@ protected:
         rjson::add(results, "message", err._msg);
         rep._content = rjson::print(std::move(results));
         rep._status = err._http_code;
-        rep.set_content_type(REPLY_CONTENT_TYPE);
         slogger.trace("api_handler error case: {}", rep._content);
     }
 
-    response_compressor _response_compressor;
     future_handler_function _f_handle;
 };
 
@@ -278,57 +265,24 @@ protected:
     }
 };
 
-// This function increments the authentication_failures counter, and may also
-// log a warn-level message and/or throw an exception, depending on what
-// enforce_authorization and warn_authorization are set to.
-// The username and client address are only used for logging purposes -
-// they are not included in the error message returned to the client, since
-// the client knows who it is.
-// Note that if enforce_authorization is false, this function will return
-// without throwing. So a caller that doesn't want to continue after an
-// authentication_error must explicitly return after calling this function.
-template<typename Exception>
-static void authentication_error(alternator::stats& stats, bool enforce_authorization, bool warn_authorization, Exception&& e, std::string_view user, gms::inet_address client_address) {
-    stats.authentication_failures++;
-    if (enforce_authorization) {
-        if (warn_authorization) {
-            slogger.warn("alternator_warn_authorization=true: {} for user {}, client address {}", e.what(), user, client_address);
-        }
-        throw std::move(e);
-    } else {
-        if (warn_authorization) {
-            slogger.warn("If you set alternator_enforce_authorization=true the following will be enforced: {} for user {}, client address {}", e.what(), user, client_address);
-        }
-    }
-}
-
 future<std::string> server::verify_signature(const request& req, const chunked_content& content) {
-    if (!_enforce_authorization.get() && !_warn_authorization.get()) {
+    if (!_enforce_authorization) {
         slogger.debug("Skipping authorization");
         return make_ready_future<std::string>();
     }
     auto host_it = req._headers.find("Host");
     if (host_it == req._headers.end()) {
-        authentication_error(_executor._stats, _enforce_authorization.get(), _warn_authorization.get(),
-            api_error::invalid_signature("Host header is mandatory for signature verification"), 
-            "", req.get_client_address());
-        return make_ready_future<std::string>();
+        throw api_error::invalid_signature("Host header is mandatory for signature verification");
     }
     auto authorization_it = req._headers.find("Authorization");
     if (authorization_it == req._headers.end()) {
-        authentication_error(_executor._stats, _enforce_authorization.get(), _warn_authorization.get(),
-            api_error::missing_authentication_token("Authorization header is mandatory for signature verification"),
-            "", req.get_client_address());
-        return make_ready_future<std::string>();
+        throw api_error::missing_authentication_token("Authorization header is mandatory for signature verification");
     }
     std::string host = host_it->second;
     std::string_view authorization_header = authorization_it->second;
     auto pos = authorization_header.find_first_of(' ');
     if (pos == std::string_view::npos || authorization_header.substr(0, pos) != "AWS4-HMAC-SHA256") {
-        authentication_error(_executor._stats, _enforce_authorization.get(), _warn_authorization.get(),
-            api_error::invalid_signature(fmt::format("Authorization header must use AWS4-HMAC-SHA256 algorithm: {}", authorization_header)),
-            "", req.get_client_address());
-        return make_ready_future<std::string>();
+        throw api_error::invalid_signature(fmt::format("Authorization header must use AWS4-HMAC-SHA256 algorithm: {}", authorization_header));
     }
     authorization_header.remove_prefix(pos+1);
     std::string credential;
@@ -363,9 +317,7 @@ future<std::string> server::verify_signature(const request& req, const chunked_c
 
     std::vector<std::string_view> credential_split = split(credential, '/');
     if (credential_split.size() != 5) {
-        authentication_error(_executor._stats, _enforce_authorization.get(), _warn_authorization.get(),
-            api_error::validation(fmt::format("Incorrect credential information format: {}", credential)), "", req.get_client_address());
-        return make_ready_future<std::string>();
+        throw api_error::validation(fmt::format("Incorrect credential information format: {}", credential));
     }
     std::string user(credential_split[0]);
     std::string datestamp(credential_split[1]);
@@ -376,81 +328,39 @@ future<std::string> server::verify_signature(const request& req, const chunked_c
     for (const auto& header : signed_headers) {
         signed_headers_map.emplace(header, std::string_view());
     }
-    std::vector<std::string> modified_values;
     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()) {
-            // replace multiple spaces in the header value header.second with
-            // a single space, as required by AWS SigV4 header canonization.
-            // If we modify the value, we need to save it in modified_values
-            // to keep it alive.
-            std::string value;
-            value.reserve(header.second.size());
-            bool prev_space = false;
-            bool modified = false;
-            for (char ch : header.second) {
-                if (ch == ' ') {
-                    if (!prev_space) {
-                        value += ch;
-                        prev_space = true;
-                    } else {
-                        modified = true; // skip a space
-                    }
-                } else {
-                    value += ch;
-                    prev_space = false;
-                }
-            }
-            if (modified) {
-                modified_values.emplace_back(std::move(value));
-                it->second = std::string_view(modified_values.back());
-            } else {
-                it->second = std::string_view(header.second);
-            }
+            it->second = std::string_view(header.second);
         }
     }
 
-    auto cache_getter = [&proxy = _proxy] (std::string username) {
-        return get_key_from_roles(proxy, std::move(username));
+    auto cache_getter = [&proxy = _proxy, &as = _auth_service] (std::string username) {
+        return get_key_from_roles(proxy, as, std::move(username));
     };
-    return _key_cache.get_ptr(user, cache_getter).then_wrapped([this, &req, &content,
+    return _key_cache.get_ptr(user, cache_getter).then([this, &req, &content,
                                                     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),
-                                                    modified_values = std::move(modified_values),
                                                     region = std::move(region),
                                                     service = std::move(service),
-                                                    user_signature = std::move(user_signature)] (future<key_cache::value_ptr> key_ptr_fut) {
-        key_cache::value_ptr key_ptr(nullptr);
-        try {
-            key_ptr = key_ptr_fut.get();
-        } catch (const api_error& e) {
-            authentication_error(_executor._stats, _enforce_authorization.get(), _warn_authorization.get(),
-                e, user, req.get_client_address());
-            return std::string();
-        }
+                                                    user_signature = std::move(user_signature)] (key_cache::value_ptr key_ptr) {
         std::string signature;
         try {
             signature = utils::aws::get_signature(user, *key_ptr, std::string_view(host), "/", req._method,
                 datestamp, signed_headers_str, signed_headers_map, &content, region, service, "");
         } catch (const std::exception& e) {
-            authentication_error(_executor._stats, _enforce_authorization.get(), _warn_authorization.get(),
-                api_error::invalid_signature(fmt::format("invalid signature: {}", e.what())),
-                user, req.get_client_address());
-            return std::string();
+            throw api_error::invalid_signature(e.what());
         }
 
         if (signature != std::string_view(user_signature)) {
             _key_cache.remove(user);
-            authentication_error(_executor._stats, _enforce_authorization.get(), _warn_authorization.get(),
-                api_error::unrecognized_client("wrong signature"),
-                user, req.get_client_address());
-            return std::string();
+            throw api_error::unrecognized_client("The security token included in the request is invalid.");
         }
         return user;
     });
@@ -463,82 +373,35 @@ static tracing::trace_state_ptr create_tracing_session(tracing::tracing& tracing
     return tracing_instance.create_session(tracing::trace_type::QUERY, props);
 }
 
-// A helper class to represent a potentially truncated view of a chunked_content.
-// If the content is short enough and single chunked, it just holds a view into the content.
-// Otherwise it will be copied into an internal buffer, possibly truncated (depending on maximum allowed size passed in),
-// and the view will point into that buffer.
-// `as_view()` method will return the view.
-// `take_as_sstring()` will either move out the internal buffer (if any), or create a new sstring from the view.
-// You should consider `as_view()` valid as long both the original chunked_content and the truncated_content object are alive.
-class truncated_content {
-    std::string_view _view;
-    sstring _content_maybe;
-
-    void copy_from_content(const chunked_content& content) {
-        size_t offset = 0;
-        for(auto &tmp : content) {
-            size_t to_copy = std::min(tmp.size(), _content_maybe.size() - offset);
-            std::copy(tmp.get(), tmp.get() + to_copy, _content_maybe.data() + offset);
-            offset += to_copy;
-            if (offset >= _content_maybe.size()) {
-                break;
-            }
-        }
+// truncated_content_view() prints a potentially long chunked_content for
+// debugging purposes. In the common case when the content is not excessively
+// long, it just returns a view into the given content, without any copying.
+// But when the content is very long, it is truncated after some arbitrary
+// max_len (or one chunk, whichever comes first), with "<truncated>" added at
+// the end. To do this modification to the string, we need to create a new
+// std::string, so the caller must pass us a reference to one, "buf", where
+// we can store the content. The returned view is only alive for as long this
+// buf is kept alive.
+static std::string_view truncated_content_view(const chunked_content& content, std::string& buf) {
+    constexpr size_t max_len = 1024;
+    if (content.empty()) {
+        return std::string_view();
+    } else if (content.size() == 1 && content.begin()->size() <= max_len) {
+        return std::string_view(content.begin()->get(), content.begin()->size());
+    } else {
+        buf = std::string(content.begin()->get(), std::min(content.begin()->size(), max_len)) + "<truncated>";
+        return std::string_view(buf);
     }
-public:
-    truncated_content(const chunked_content& content, size_t max_len = std::numeric_limits<size_t>::max()) {
-        if (content.empty()) return;
-        if (content.size() == 1 && content.begin()->size() <= max_len) {
-            _view = std::string_view(content.begin()->get(), content.begin()->size());
-            return;
-        }
-
-        constexpr std::string_view truncated_text = "<truncated>";
-        size_t content_size = 0;
-        for(auto &tmp : content) {
-            content_size += tmp.size();
-        }
-        if (content_size <= max_len) {
-            _content_maybe = sstring{ sstring::initialized_later{}, content_size };
-            copy_from_content(content);
-        }
-        else {
-            _content_maybe = sstring{ sstring::initialized_later{}, max_len + truncated_text.size() };
-            copy_from_content(content);
-            std::copy(truncated_text.begin(), truncated_text.end(), _content_maybe.data() + _content_maybe.size() - truncated_text.size());
-        }
-        _view = std::string_view(_content_maybe);
-    }
-
-    std::string_view as_view() const { return _view; }
-    sstring take_as_sstring() && {
-        if (_content_maybe.empty() && !_view.empty()) {
-            return sstring{_view};
-        }
-        return std::move(_content_maybe);
-    }
-};
-
-// `truncated_content_view` will produce an object representing a view to a passed content
-// possibly truncated at some length. The value returned is used in two ways:
-// - to print it in logs (use `as_view()` method for this)
-// - to pass it to tracing object, where it will be stored and used later
-//   (use `take_as_sstring()` method as this produces a copy in form of a sstring)
-// `truncated_content` delays constructing `sstring` object until it's actually needed.
-// `truncated_content` is valid as long as passed `content` is alive.
-// if the content is truncated, `<truncated>` will be appended at the maximum size limit
-// and total size will be `max_users_query_size_in_trace_output() + strlen("<truncated>")`.
-static truncated_content truncated_content_view(const chunked_content& content, size_t max_size) {
-    return truncated_content{content, max_size};
 }
 
-static tracing::trace_state_ptr maybe_trace_query(service::client_state& client_state, std::string_view username, std::string_view op, const chunked_content& query, size_t max_users_query_size_in_trace_output) {
+static tracing::trace_state_ptr maybe_trace_query(service::client_state& client_state, std::string_view username, std::string_view op, const chunked_content& query) {
     tracing::trace_state_ptr trace_state;
     tracing::tracing& tracing_instance = tracing::tracing::get_local_tracing_instance();
     if (tracing_instance.trace_next_query() || tracing_instance.slow_query_tracing_enabled()) {
         trace_state = create_tracing_session(tracing_instance);
+        std::string buf;
         tracing::add_session_param(trace_state, "alternator_op", op);
-        tracing::add_query(trace_state, truncated_content_view(query, max_users_query_size_in_trace_output).take_as_sstring());
+        tracing::add_query(trace_state, truncated_content_view(query, buf));
         tracing::begin(trace_state, seastar::format("Alternator {}", op), client_state.get_client_address());
         if (!username.empty()) {
             tracing::set_username(trace_state, auth::authenticated_user(username));
@@ -547,265 +410,62 @@ static tracing::trace_state_ptr maybe_trace_query(service::client_state& client_
     return trace_state;
 }
 
-// This read_entire_stream() is similar to Seastar's read_entire_stream()
-// which reads the given content_stream until its end into non-contiguous
-// memory. The difference is that this implementation takes an extra length
-// limit, and throws an error if we read more than this limit.
-// This length-limited variant would not have been needed if Seastar's HTTP
-// server's set_content_length_limit() worked in every case, but unfortunately
-// it does not - it only works if the request has a Content-Length header (see
-// issue #8196). In contrast this function can limit the request's length no
-// matter how it's encoded. We need this limit to protect Alternator from
-// oversized requests that can deplete memory.
-static future<chunked_content>
-read_entire_stream(input_stream<char>& inp, size_t length_limit) {
-    chunked_content ret;
-    // We try to read length_limit + 1 bytes, so that we can throw an
-    // exception if we managed to read more than length_limit.
-    ssize_t remain = length_limit + 1;
-    do {
-        temporary_buffer<char> buf = co_await inp.read_up_to(remain);
-        if (buf.empty()) {
-            break;
-        }
-        remain -= buf.size();
-        ret.push_back(std::move(buf));
-    } while (remain > 0);
-    // If we read the full length_limit + 1 bytes, we went over the limit:
-    if (remain <= 0) {
-        // By throwing here an error, we may send a reply (the error message)
-        // without having read the full request body. Seastar's httpd will
-        // realize that we have not read the entire content stream, and
-        // correctly mark the connection unreusable, i.e., close it.
-        // This means we are currently exposed to issue #12166 caused by
-        // Seastar issue 1325), where the client may get an RST instead of
-        // a FIN, and may rarely get a "Connection reset by peer" before
-        // reading the error we send.
-        throw api_error::payload_too_large(fmt::format("Request content length limit of {} bytes exceeded", length_limit));
-    }
-    co_return ret;
-}
-
-// safe_gzip_stream is an exception-safe wrapper for zlib's z_stream.
-// The "z_stream" struct is used by zlib to hold state while decompressing a
-// stream of data. It allocates memory which must be freed with inflateEnd(),
-// which the destructor of this class does.
-class safe_gzip_zstream {
-    z_stream _zs;
-public:
-    // If gzip is true, decode a gzip header (for "Content-Encoding: gzip").
-    // Otherwise, a zlib header (for "Content-Encoding: deflate").
-    safe_gzip_zstream(bool gzip = true) {
-        memset(&_zs, 0, sizeof(_zs));
-        if (inflateInit2(&_zs, gzip ? 16 + MAX_WBITS : MAX_WBITS) != Z_OK) {
-            // Should only happen if memory allocation fails
-            throw std::bad_alloc();
-        }
-    }
-    ~safe_gzip_zstream() {
-        inflateEnd(&_zs);
-    }
-    z_stream* operator->() {
-        return &_zs;
-    }
-    z_stream* get() {
-        return &_zs;
-    }
-    void reset() {
-        inflateReset(&_zs);
-    }
-};
-
-// ungzip() takes a chunked_content of a compressed request body, and returns
-// the uncompressed content as a chunked_content. If gzip is true, we expect
-// gzip header (for "Content-Encoding: gzip"), if gzip is false, we expect a
-// zlib header (for "Content-Encoding: deflate").
-// If the uncompressed content exceeds length_limit, an error is thrown.
-static future<chunked_content>
-ungzip(chunked_content&& compressed_body, size_t length_limit, bool gzip = true) {
-    chunked_content ret;
-    // output_buf can be any size - when uncompressing input_buf, it doesn't
-    // need to fit in a single output_buf, we'll use multiple output_buf for
-    // a single input_buf if needed.
-    constexpr size_t OUTPUT_BUF_SIZE = 4096;
-    temporary_buffer<char> output_buf;
-    safe_gzip_zstream strm(gzip);
-    bool complete_stream = false; // empty input is not a valid gzip/deflate
-    size_t total_out_bytes = 0;
-    for (const temporary_buffer<char>& input_buf : compressed_body) {
-        if (input_buf.empty()) {
-            continue;
-        }
-        complete_stream = false;
-        strm->next_in = (Bytef*) input_buf.get();
-        strm->avail_in = (uInt) input_buf.size();
-        do {
-            co_await coroutine::maybe_yield();
-            if (output_buf.empty()) {
-                output_buf = temporary_buffer<char>(OUTPUT_BUF_SIZE);
-            }
-            strm->next_out = (Bytef*) output_buf.get();
-            strm->avail_out = OUTPUT_BUF_SIZE;
-            int e = inflate(strm.get(), Z_NO_FLUSH);
-            size_t out_bytes = OUTPUT_BUF_SIZE - strm->avail_out;
-            if (out_bytes > 0) {
-                // If output_buf is nearly full, we save it as-is in ret. But
-                // if it only has little data, better copy to a small buffer.
-                if (out_bytes > OUTPUT_BUF_SIZE/2) {
-                    ret.push_back(std::move(output_buf).prefix(out_bytes));
-                    // output_buf is now empty. if this loop finds more input,
-                    // we'll allocate a new output buffer.
-                } else {
-                    ret.push_back(temporary_buffer<char>(output_buf.get(), out_bytes));
-                }
-                total_out_bytes += out_bytes;
-                if (total_out_bytes > length_limit) {
-                    throw api_error::payload_too_large(fmt::format("Request content length limit of {} bytes exceeded", length_limit));
-                }
-            }
-            if (e == Z_STREAM_END) {
-                // There may be more input after the first gzip stream - in
-                // either this input_buf or the next one. The additional input
-                // should be a second concatenated gzip. We need to allow that
-                // by resetting the gzip stream and continuing the input loop
-                // until there's no more input.
-                strm.reset();
-                if (strm->avail_in == 0) {
-                    complete_stream = true;
-                    break;
-                }
-            } else if (e != Z_OK && e != Z_BUF_ERROR) {
-                // DynamoDB returns an InternalServerError when given a bad
-                // gzip request body. See test test_broken_gzip_content
-                throw api_error::internal("Error during gzip decompression of request body");
-            }
-        } while (strm->avail_in > 0 || strm->avail_out == 0);
-    }
-    if (!complete_stream) {
-        // The gzip stream was not properly finished with Z_STREAM_END
-        throw api_error::internal("Truncated gzip in request body");
-    }
-    co_return ret;
-}
-
 future<executor::request_return_type> server::handle_api_request(std::unique_ptr<request> req) {
     _executor._stats.total_operations++;
     sstring target = req->get_header("X-Amz-Target");
     // target is DynamoDB API version followed by a dot '.' and operation type (e.g. CreateTable)
     auto dot = target.find('.');
     std::string_view op = (dot == sstring::npos) ? std::string_view() : std::string_view(target).substr(dot+1);
-    if (req->content_length > request_content_length_limit) {
-        // If we have a Content-Length header and know the request will be too
-        // long, we don't need to wait for read_entire_stream() below to
-        // discover it. And we definitely mustn't try to get_units() below for
-        // for such a size.
-        co_return api_error::payload_too_large(fmt::format("Request content length limit of {} bytes exceeded", request_content_length_limit));
-    }
-    // Check the concurrency limit early, before acquiring memory and
-    // reading the request body, to avoid piling up memory from excess
-    // requests that will be rejected anyway. This mirrors the CQL
-    // transport which also checks concurrency before memory acquisition
-    // (transport/server.cc).
-    if (_pending_requests.get_count() >= _max_concurrent_requests) {
-        _executor._stats.requests_shed++;
-        co_return api_error::request_limit_exceeded(format("too many in-flight requests (configured via max_concurrent_requests_per_shard): {}", _pending_requests.get_count()));
-    }
-    _pending_requests.enter();
-    auto leave = defer([this] () noexcept { _pending_requests.leave(); });
     // JSON parsing can allocate up to roughly 2x the size of the raw
     // document, + a couple of bytes for maintenance.
-    // If the Content-Length of the request is not available, we assume
-    // the largest possible request (request_content_length_limit, i.e., 16 MB)
-    // and after reading the request we return_units() the excess.
-    size_t mem_estimate = (req->content_length ? req->content_length : request_content_length_limit) * 2 + 8000;
+    // TODO: consider the case where req->content_length is missing. Maybe
+    // we need to take the content_length_limit and return some of the units
+    // when we finish read_content_and_verify_signature?
+    size_t mem_estimate = req->content_length * 2 + 8000;
     auto units_fut = get_units(*_memory_limiter, mem_estimate);
     if (_memory_limiter->waiters()) {
         ++_executor._stats.requests_blocked_memory;
     }
     auto units = co_await std::move(units_fut);
-    throwing_assert(req->content_stream);
-    chunked_content content = co_await read_entire_stream(*req->content_stream, request_content_length_limit);
-    // If the request had no Content-Length, we reserved too many units
-    // so need to return some
-    if (req->content_length == 0) {
-        size_t content_length = 0;
-        for (const auto& chunk : content) {
-            content_length += chunk.size();
-        }
-        size_t new_mem_estimate = content_length * 2 + 8000;
-        units.return_units(mem_estimate - new_mem_estimate);
-    }
+    SCYLLA_ASSERT(req->content_stream);
+    chunked_content content = co_await util::read_entire_stream(*req->content_stream);
     auto username = co_await verify_signature(*req, content);
-    // If the request is compressed, uncompress it now, after we checked
-    // the signature (the signature is computed on the compressed content).
-    // We apply the request_content_length_limit again to the uncompressed
-    // content - we don't want to allow a tiny compressed request to
-    // expand to a huge uncompressed request.
-    sstring content_encoding = req->get_header("Content-Encoding");
-    if (content_encoding == "gzip") {
-        content = co_await ungzip(std::move(content), request_content_length_limit);
-    } else if (content_encoding == "deflate") {
-        content = co_await ungzip(std::move(content), request_content_length_limit, false);
-    } else if (!content_encoding.empty()) {
-        // DynamoDB returns a 500 error for unsupported Content-Encoding.
-        // I'm not sure if this is the best error code, but let's do it too.
-        // See the test test_garbage_content_encoding confirming this case.
-        co_return api_error::internal("Unsupported Content-Encoding");
-    }
-
-    // As long as the system_clients_entry object is alive, this request will
-    // be visible in the "system.clients" virtual table. When requested, this
-    // entry will be formatted by server::ongoing_request::make_client_data().
-    auto user_agent_header = co_await _connection_options_keys_and_values.get_or_load(req->get_header("User-Agent"), [] (const client_options_cache_key_type&) {
-        return make_ready_future<options_cache_value_type>(options_cache_value_type{});
-    });
-
-    auto system_clients_entry = _ongoing_requests.emplace(
-        req->get_client_address(), std::move(user_agent_header),
-        username, current_scheduling_group(),
-        req->get_protocol_name() == "https");
 
     if (slogger.is_enabled(log_level::trace)) {
-        slogger.trace("Request: {} {} {}", op, truncated_content_view(content, _max_users_query_size_in_trace_output).as_view(), req->_headers);
+        std::string buf;
+        slogger.trace("Request: {} {} {}", op, truncated_content_view(content, buf), req->_headers);
     }
     auto callback_it = _callbacks.find(op);
     if (callback_it == _callbacks.end()) {
         _executor._stats.unsupported_operations++;
         co_return api_error::unknown_operation(fmt::format("Unsupported operation {}", op));
     }
+    if (_pending_requests.get_count() >= _max_concurrent_requests) {
+        _executor._stats.requests_shed++;
+        co_return api_error::request_limit_exceeded(format("too many in-flight requests (configured via max_concurrent_requests_per_shard): {}", _pending_requests.get_count()));
+    }
+    _pending_requests.enter();
+    auto leave = defer([this] () noexcept { _pending_requests.leave(); });
     executor::client_state client_state(service::client_state::external_tag(),
         _auth_service, &_sl_controller, _timeout_config.current_values(), req->get_client_address());
     if (!username.empty()) {
         client_state.set_login(auth::authenticated_user(username));
     }
-    client_state.maybe_update_per_service_level_params();
+    co_await client_state.maybe_update_per_service_level_params();
 
-    tracing::trace_state_ptr trace_state = maybe_trace_query(client_state, username, op, content, _max_users_query_size_in_trace_output.get());
+    tracing::trace_state_ptr trace_state = maybe_trace_query(client_state, username, op, content);
     tracing::trace(trace_state, "{}", op);
 
     auto user = client_state.user();
     auto f = [this, content = std::move(content), &callback = callback_it->second,
             client_state = std::move(client_state), trace_state = std::move(trace_state),
             units = std::move(units), req = std::move(req)] () mutable -> future<executor::request_return_type> {
-        rjson::value json_request = co_await _json_parser.parse(std::move(content));
-        if (!json_request.IsObject()) {
-            co_return api_error::validation("Request content must be an object");
-        }
-        std::unique_ptr<audit::audit_info_alternator> audit_info;
-        std::exception_ptr ex = {};
-        executor::request_return_type ret;
-        try {
-            ret = co_await callback(_executor, client_state, trace_state, make_service_permit(std::move(units)), std::move(json_request), std::move(req), audit_info);
-        } catch (...) {
-            ex = std::current_exception();
-        }
-        if (audit_info) {
-            co_await audit::inspect(*audit_info, client_state, ex != nullptr);
-        }
-        if (ex) {
-            co_return coroutine::exception(std::move(ex));
-        }
-        co_return ret;
+                rjson::value json_request = co_await _json_parser.parse(std::move(content));
+                if (!json_request.IsObject()) {
+                    co_return api_error::validation("Request content must be an object");
+                }
+                co_return co_await callback(_executor, client_state, trace_state,
+                    make_service_permit(std::move(units)), std::move(json_request), std::move(req));
     };
     co_return co_await _sl_controller.with_user_service_level(user, std::ref(f));
 }
@@ -813,7 +473,7 @@ future<executor::request_return_type> server::handle_api_request(std::unique_ptr
 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));
-    }, _proxy.data_dictionary().get_config());
+    });
 
     r.put(operation_type::POST, "/", req_handler);
     r.put(operation_type::GET, "/", new health_handler(_pending_requests));
@@ -844,119 +504,108 @@ server::server(executor& exec, service::storage_proxy& proxy, gms::gossiper& gos
         , _auth_service(auth_service)
         , _sl_controller(sl_controller)
         , _key_cache(1024, 1min, slogger)
-        , _max_users_query_size_in_trace_output(1024)
+        , _enforce_authorization(false)
         , _enabled_servers{}
         , _pending_requests("alternator::server::pending_requests")
         , _timeout_config(_proxy.data_dictionary().get_config())
       , _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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.create_table(client_state, std::move(trace_state), std::move(permit), std::move(json_request), audit_info);
+        {"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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.describe_table(client_state, std::move(trace_state), std::move(permit), std::move(json_request), audit_info);
+        {"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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.delete_table(client_state, std::move(trace_state), std::move(permit), std::move(json_request), audit_info);
+        {"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));
         }},
-        {"UpdateTable", [] (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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.update_table(client_state, std::move(trace_state), std::move(permit), std::move(json_request), audit_info);
+        {"UpdateTable", [] (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_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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.put_item(client_state, std::move(trace_state), std::move(permit), std::move(json_request), audit_info);
+        {"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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.update_item(client_state, std::move(trace_state), std::move(permit), std::move(json_request), audit_info);
+        {"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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.get_item(client_state, std::move(trace_state), std::move(permit), std::move(json_request), audit_info);
+        {"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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.delete_item(client_state, std::move(trace_state), std::move(permit), std::move(json_request), audit_info);
+        {"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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.list_tables(client_state, std::move(permit), std::move(json_request), audit_info);
+        {"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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.scan(client_state, std::move(trace_state), std::move(permit), std::move(json_request), audit_info);
+        {"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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.describe_endpoints(client_state, std::move(permit), std::move(json_request), req->get_header("Host"), audit_info);
+        {"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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.batch_write_item(client_state, std::move(trace_state), std::move(permit), std::move(json_request), audit_info);
+        {"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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.batch_get_item(client_state, std::move(trace_state), std::move(permit), std::move(json_request), audit_info);
+        {"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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.query(client_state, std::move(trace_state), std::move(permit), std::move(json_request), audit_info);
+        {"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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.tag_resource(client_state, std::move(permit), std::move(json_request), audit_info);
+        {"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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.untag_resource(client_state, std::move(permit), std::move(json_request), audit_info);
+        {"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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.list_tags_of_resource(client_state, std::move(permit), std::move(json_request), audit_info);
+        {"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));
         }},
-        {"UpdateTimeToLive", [] (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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.update_time_to_live(client_state, std::move(permit), std::move(json_request), audit_info);
+        {"UpdateTimeToLive", [] (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_time_to_live(client_state, std::move(permit), std::move(json_request));
         }},
-        {"DescribeTimeToLive", [] (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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.describe_time_to_live(client_state, std::move(permit), std::move(json_request), audit_info);
+        {"DescribeTimeToLive", [] (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_time_to_live(client_state, std::move(permit), std::move(json_request));
         }},
-        {"ListStreams", [] (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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.list_streams(client_state, std::move(permit), std::move(json_request), audit_info);
+        {"ListStreams", [] (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_streams(client_state, std::move(permit), std::move(json_request));
         }},
-        {"DescribeStream", [] (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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.describe_stream(client_state, std::move(permit), std::move(json_request), audit_info);
+        {"DescribeStream", [] (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_stream(client_state, std::move(permit), std::move(json_request));
         }},
-        {"GetShardIterator", [] (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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.get_shard_iterator(client_state, std::move(permit), std::move(json_request), audit_info);
+        {"GetShardIterator", [] (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_shard_iterator(client_state, std::move(permit), std::move(json_request));
         }},
-        {"GetRecords", [] (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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.get_records(client_state, std::move(trace_state), std::move(permit), std::move(json_request), audit_info);
+        {"GetRecords", [] (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_records(client_state, std::move(trace_state), std::move(permit), std::move(json_request));
         }},
-        {"DescribeContinuousBackups", [] (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, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
-            return e.describe_continuous_backups(client_state, std::move(permit), std::move(json_request), audit_info);
+        {"DescribeContinuousBackups", [] (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_continuous_backups(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<uint16_t> port_proxy_protocol, std::optional<uint16_t> https_port_proxy_protocol,
-        std::optional<tls::credentials_builder> creds,
-        utils::updateable_value<bool> enforce_authorization, utils::updateable_value<bool> warn_authorization, utils::updateable_value<uint64_t> max_users_query_size_in_trace_output,
-        semaphore* memory_limiter, utils::updateable_value<uint32_t> max_concurrent_requests) {
+future<> server::init(net::inet_address addr, std::optional<uint16_t> port, std::optional<uint16_t> https_port, std::optional<tls::credentials_builder> creds,
+        utils::updateable_value<bool> enforce_authorization, semaphore* memory_limiter, utils::updateable_value<uint32_t> max_concurrent_requests) {
     _memory_limiter = memory_limiter;
     _enforce_authorization = std::move(enforce_authorization);
-    _warn_authorization = std::move(warn_authorization);
     _max_concurrent_requests = std::move(max_concurrent_requests);
-    _max_users_query_size_in_trace_output = std::move(max_users_query_size_in_trace_output);
-    if (!port && !https_port && !port_proxy_protocol && !https_port_proxy_protocol) {
+    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, port_proxy_protocol, https_port_proxy_protocol, creds] {
+    return seastar::async([this, addr, port, https_port, creds] {
         _executor.start().get();
 
-        if (port || port_proxy_protocol) {
+        if (port) {
             set_routes(_http_server._routes);
+            _http_server.set_content_length_limit(server::content_length_limit);
             _http_server.set_content_streaming(true);
-            if (port) {
-                _http_server.listen(socket_address{addr, *port}).get();
-            }
-            if (port_proxy_protocol) {
-                listen_options lo;
-                lo.reuse_address = true;
-                lo.proxy_protocol = true;
-                _http_server.listen(socket_address{addr, *port_proxy_protocol}, lo).get();
-            }
+            _http_server.listen(socket_address{addr, *port}).get();
             _enabled_servers.push_back(std::ref(_http_server));
         }
-        if (https_port || https_port_proxy_protocol) {
+        if (https_port) {
             set_routes(_https_server._routes);
+            _https_server.set_content_length_limit(server::content_length_limit);
             _https_server.set_content_streaming(true);
 
             if (this_shard_id() == 0) {
@@ -975,15 +624,7 @@ future<> server::init(net::inet_address addr, std::optional<uint16_t> port, std:
             } else {
                 _credentials = creds->build_server_credentials();
             }
-            if (https_port) {
-                _https_server.listen(socket_address{addr, *https_port}, _credentials).get();
-            }
-            if (https_port_proxy_protocol) {
-                listen_options lo;
-                lo.reuse_address = true;
-                lo.proxy_protocol = true;
-                _https_server.listen(socket_address{addr, *https_port_proxy_protocol}, lo, _credentials).get();
-            }
+            _https_server.listen(socket_address{addr, *https_port}, _credentials).get();
             _enabled_servers.push_back(std::ref(_https_server));
         }
     });
@@ -1039,36 +680,6 @@ future<> server::json_parser::stop() {
     return std::move(_run_parse_json_thread);
 }
 
-// Convert an entry in the server's list of ongoing Alternator requests
-// (_ongoing_requests) into a client_data object. This client_data object
-// will then be used to produce a row for the "system.clients" virtual table.
-client_data server::ongoing_request::make_client_data() const {
-    client_data cd;
-    cd.ct = client_type::alternator;
-    cd.ip = _client_address.addr();
-    cd.port = _client_address.port();
-    cd.shard_id = this_shard_id();
-    cd.connection_stage = client_connection_stage::established;
-    cd.username = _username;
-    cd.scheduling_group_name = _scheduling_group.name();
-    cd.ssl_enabled = _is_https;
-    // For now, we save the full User-Agent header as the "driver name"
-    // and keep "driver_version" unset.
-    cd.driver_name = _user_agent;
-    // Leave "protocol_version" unset, it has no meaning in Alternator.
-    // Leave "hostname", "ssl_protocol" and "ssl_cipher_suite" unset for Alternator.
-    // Note: CQL sets ssl_protocol and ssl_cipher_suite via generic_server::connection base class.
-    return cd;
-}
-
-future<utils::chunked_vector<foreign_ptr<std::unique_ptr<client_data>>>> server::get_client_data() {
-    utils::chunked_vector<foreign_ptr<std::unique_ptr<client_data>>> ret;
-    co_await _ongoing_requests.for_each_gently([&ret] (const ongoing_request& r) {
-        ret.emplace_back(make_foreign(std::make_unique<client_data>(r.make_client_data())));
-    });
-    co_return ret;
-}
-
 const char* api_error::what() const noexcept {
     if (_what_string.empty()) {
         _what_string = fmt::format("{} {}: {}", std::to_underlying(_http_code), _type, _msg);

alternator/server.hh

@@ -3,13 +3,12 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #pragma once
 
 #include "alternator/executor.hh"
-#include "utils/scoped_item_list.hh"
 #include <seastar/core/future.hh>
 #include <seastar/core/condition-variable.hh>
 #include <seastar/http/httpd.hh>
@@ -21,20 +20,14 @@
 #include "utils/updateable_value.hh"
 #include <seastar/core/units.hh>
 
-struct client_data;
-
 namespace alternator {
 
 using chunked_content = rjson::chunked_content;
 
 class server : public peering_sharded_service<server> {
-    // The maximum size of a request body that Alternator will accept,
-    // in bytes. This is a safety measure to prevent Alternator from
-    // running out of memory when a client sends a very large request.
-    // DynamoDB also has the same limit set to 16 MB.
-    static constexpr size_t request_content_length_limit = 16*MB;
+    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<http::request>, std::unique_ptr<audit::audit_info_alternator>&)>;
+            tracing::trace_state_ptr, service_permit, rjson::value, std::unique_ptr<http::request>)>;
     using alternator_callbacks_map = std::unordered_map<std::string_view, alternator_callback>;
 
     httpd::http_server _http_server;
@@ -47,15 +40,12 @@ class server : public peering_sharded_service<server> {
 
     key_cache _key_cache;
     utils::updateable_value<bool> _enforce_authorization;
-    utils::updateable_value<bool> _warn_authorization;
-    utils::updateable_value<uint64_t> _max_users_query_size_in_trace_output;
     utils::small_vector<std::reference_wrapper<seastar::httpd::http_server>, 2> _enabled_servers;
     named_gate _pending_requests;
     // In some places we will need a CQL updateable_timeout_config object even
     // though it isn't really relevant for Alternator which defines its own
     // timeouts separately. We can create this object only once.
     updateable_timeout_config _timeout_config;
-    client_options_cache_type _connection_options_keys_and_values;
 
     alternator_callbacks_map _callbacks;
 
@@ -84,33 +74,12 @@ class server : public peering_sharded_service<server> {
     };
     json_parser _json_parser;
 
-    // The server maintains a list of ongoing requests, that are being handled
-    // by handle_api_request(). It uses this list in get_client_data(), which
-    // is called when reading the "system.clients" virtual table.
-    struct ongoing_request {
-        socket_address _client_address;
-        client_options_cache_entry_type _user_agent;
-        sstring _username;
-        scheduling_group _scheduling_group;
-        bool _is_https;
-        client_data make_client_data() const;
-    };
-    utils::scoped_item_list<ongoing_request> _ongoing_requests;
-
 public:
     server(executor& executor, service::storage_proxy& proxy, gms::gossiper& gossiper, auth::service& service, qos::service_level_controller& sl_controller);
 
-    future<> init(net::inet_address addr, std::optional<uint16_t> port, std::optional<uint16_t> https_port,
-            std::optional<uint16_t> port_proxy_protocol, std::optional<uint16_t> https_port_proxy_protocol,
-            std::optional<tls::credentials_builder> creds,
-            utils::updateable_value<bool> enforce_authorization, utils::updateable_value<bool> warn_authorization, utils::updateable_value<uint64_t> max_users_query_size_in_trace_output,
-            semaphore* memory_limiter, utils::updateable_value<uint32_t> max_concurrent_requests);
+    future<> init(net::inet_address addr, std::optional<uint16_t> port, std::optional<uint16_t> https_port, std::optional<tls::credentials_builder> creds,
+            utils::updateable_value<bool> enforce_authorization, semaphore* memory_limiter, utils::updateable_value<uint32_t> max_concurrent_requests);
     future<> stop();
-    // get_client_data() is called (on each shard separately) when the virtual
-    // table "system.clients" is read. It is expected to generate a list of
-    // clients connected to this server (on this shard). This function is
-    // called by alternator::controller::get_client_data().
-    future<utils::chunked_vector<foreign_ptr<std::unique_ptr<client_data>>>> get_client_data();
 private:
     void set_routes(seastar::httpd::routes& r);
     // If verification succeeds, returns the authenticated user's username

alternator/stats.cc

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #include "stats.hh"
@@ -14,6 +14,20 @@
 namespace alternator {
 
 const char* ALTERNATOR_METRICS = "alternator";
+static seastar::metrics::histogram estimated_histogram_to_metrics(const utils::estimated_histogram& histogram) {
+    seastar::metrics::histogram res;
+    res.buckets.resize(histogram.bucket_offsets.size());
+    uint64_t cumulative_count = 0;
+    res.sample_count = histogram._count;
+    res.sample_sum = histogram._sample_sum;
+    for (size_t i = 0; i < res.buckets.size(); i++) {
+        auto& v = res.buckets[i];
+        v.upper_bound = histogram.bucket_offsets[i];
+        cumulative_count += histogram.buckets[i];
+        v.count = cumulative_count;
+    }
+    return res;
+}
 
 static seastar::metrics::label column_family_label("cf");
 static seastar::metrics::label keyspace_label("ks");
@@ -137,53 +151,10 @@ static void register_metrics_with_optional_table(seastar::metrics::metric_groups
             seastar::metrics::make_counter("batch_item_count", seastar::metrics::description("The total number of items processed across all batches"), labels,
                     stats.api_operations.batch_get_item_batch_total)(op("BatchGetItem")).aggregate(aggregate_labels).set_skip_when_empty(),
             seastar::metrics::make_histogram("batch_item_count_histogram", seastar::metrics::description("Histogram of the number of items in a batch request"), labels,
-                    [&stats]{ return to_metrics_histogram(stats.api_operations.batch_get_item_histogram);})(op("BatchGetItem")).aggregate({seastar::metrics::shard_label}).set_skip_when_empty(),
+                    [&stats]{ return estimated_histogram_to_metrics(stats.api_operations.batch_get_item_histogram);})(op("BatchGetItem")).aggregate({seastar::metrics::shard_label}).set_skip_when_empty(),
             seastar::metrics::make_histogram("batch_item_count_histogram", seastar::metrics::description("Histogram of the number of items in a batch request"), labels,
-                    [&stats]{ return to_metrics_histogram(stats.api_operations.batch_write_item_histogram);})(op("BatchWriteItem")).aggregate({seastar::metrics::shard_label}).set_skip_when_empty(),
-            seastar::metrics::make_histogram("operation_size_kb", seastar::metrics::description("Histogram of item sizes involved in a request"), labels,
-                    [&stats]{ return to_metrics_histogram(stats.operation_sizes.get_item_op_size_kb);})(op("GetItem")).aggregate({seastar::metrics::shard_label}).set_skip_when_empty(),
-            seastar::metrics::make_histogram("operation_size_kb", seastar::metrics::description("Histogram of item sizes involved in a request"), labels,
-                    [&stats]{ return to_metrics_histogram(stats.operation_sizes.put_item_op_size_kb);})(op("PutItem")).aggregate({seastar::metrics::shard_label}).set_skip_when_empty(),
-            seastar::metrics::make_histogram("operation_size_kb", seastar::metrics::description("Histogram of item sizes involved in a request"), labels,
-                    [&stats]{ return to_metrics_histogram(stats.operation_sizes.delete_item_op_size_kb);})(op("DeleteItem")).aggregate({seastar::metrics::shard_label}).set_skip_when_empty(),
-            seastar::metrics::make_histogram("operation_size_kb", seastar::metrics::description("Histogram of item sizes involved in a request"), labels,
-                    [&stats]{ return to_metrics_histogram(stats.operation_sizes.update_item_op_size_kb);})(op("UpdateItem")).aggregate({seastar::metrics::shard_label}).set_skip_when_empty(),
-            seastar::metrics::make_histogram("operation_size_kb", seastar::metrics::description("Histogram of item sizes involved in a request"), labels,
-                    [&stats]{ return to_metrics_histogram(stats.operation_sizes.batch_get_item_op_size_kb);})(op("BatchGetItem")).aggregate({seastar::metrics::shard_label}).set_skip_when_empty(),
-            seastar::metrics::make_histogram("operation_size_kb", seastar::metrics::description("Histogram of item sizes involved in a request"), labels,
-                    [&stats]{ return to_metrics_histogram(stats.operation_sizes.batch_write_item_op_size_kb);})(op("BatchWriteItem")).aggregate({seastar::metrics::shard_label}).set_skip_when_empty(),
+                    [&stats]{ return estimated_histogram_to_metrics(stats.api_operations.batch_write_item_histogram);})(op("BatchWriteItem")).aggregate({seastar::metrics::shard_label}).set_skip_when_empty(),
     });
-
-    seastar::metrics::label expression_label("expression");
-    metrics.add_group(group_name, {
-            seastar::metrics::make_total_operations("expression_cache_evictions", stats.expression_cache.evictions,
-                    seastar::metrics::description("Counts number of entries evicted from expressions cache"), labels).aggregate(aggregate_labels).set_skip_when_empty(),
-
-            seastar::metrics::make_total_operations("expression_cache_hits", stats.expression_cache.requests[stats::expression_types::UPDATE_EXPRESSION].hits,
-                    seastar::metrics::description("Counts number of hits of cached expressions"), labels)(expression_label("UpdateExpression")).aggregate(aggregate_labels).set_skip_when_empty(),
-            seastar::metrics::make_total_operations("expression_cache_misses", stats.expression_cache.requests[stats::expression_types::UPDATE_EXPRESSION].misses,
-                    seastar::metrics::description("Counts number of misses of cached expressions"), labels)(expression_label("UpdateExpression")).aggregate(aggregate_labels).set_skip_when_empty(),
-            
-            seastar::metrics::make_total_operations("expression_cache_hits", stats.expression_cache.requests[stats::expression_types::CONDITION_EXPRESSION].hits,
-                    seastar::metrics::description("Counts number of hits of cached expressions"), labels)(expression_label("ConditionExpression")).aggregate(aggregate_labels).set_skip_when_empty(),
-            seastar::metrics::make_total_operations("expression_cache_misses", stats.expression_cache.requests[stats::expression_types::CONDITION_EXPRESSION].misses,
-                    seastar::metrics::description("Counts number of misses of cached expressions"), labels)(expression_label("ConditionExpression")).aggregate(aggregate_labels).set_skip_when_empty(),
-
-            seastar::metrics::make_total_operations("expression_cache_hits", stats.expression_cache.requests[stats::expression_types::PROJECTION_EXPRESSION].hits,
-                    seastar::metrics::description("Counts number of hits of cached expressions"), labels)(expression_label("ProjectionExpression")).aggregate(aggregate_labels).set_skip_when_empty(),
-            seastar::metrics::make_total_operations("expression_cache_misses", stats.expression_cache.requests[stats::expression_types::PROJECTION_EXPRESSION].misses,
-                    seastar::metrics::description("Counts number of misses of cached expressions"), labels)(expression_label("ProjectionExpression")).aggregate(aggregate_labels).set_skip_when_empty()
-    });
-
-    // Only register the following metrics for the global metrics, not per-table
-    if (!has_table) {
-        metrics.add_group("alternator", {
-            seastar::metrics::make_counter("authentication_failures", stats.authentication_failures,
-                seastar::metrics::description("total number of authentication failures"), labels).aggregate({seastar::metrics::shard_label}).set_skip_when_empty(),
-            seastar::metrics::make_counter("authorization_failures", stats.authorization_failures,
-                seastar::metrics::description("total number of authorization failures"), labels).aggregate({seastar::metrics::shard_label}).set_skip_when_empty(),
-        });
-    }
 }
 
 void register_metrics(seastar::metrics::metric_groups& metrics, const stats& stats) {

alternator/stats.hh

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #pragma once
@@ -16,8 +16,6 @@
 #include "cql3/stats.hh"
 
 namespace alternator {
-using batch_histogram = utils::estimated_histogram_with_max<128>;
-using op_size_histogram = utils::estimated_histogram_with_max<512>;
 
 // Object holding per-shard statistics related to Alternator.
 // While this object is alive, these metrics are also registered to be
@@ -78,46 +76,9 @@ public:
         utils::timed_rate_moving_average_summary_and_histogram batch_get_item_latency;
         utils::timed_rate_moving_average_summary_and_histogram get_records_latency;
 
-        batch_histogram batch_get_item_histogram;
-        batch_histogram batch_write_item_histogram;
+        utils::estimated_histogram batch_get_item_histogram{22}; // a histogram that covers the range 1 - 100
+        utils::estimated_histogram batch_write_item_histogram{22}; // a histogram that covers the range 1 - 100
     } api_operations;
-    // Operation size metrics
-    struct {
-        // Item size statistics collected per table and aggregated per node.
-        // Each histogram covers the range 0 - 512. Resolves #25143.
-        // A size is the retrieved item's size.
-        op_size_histogram get_item_op_size_kb;
-        // A size is the maximum of the new item's size and the old item's size.
-        op_size_histogram put_item_op_size_kb;
-        // A size is the deleted item's size. If the deleted item's size is
-        // unknown (i.e. read-before-write wasn't necessary and it wasn't
-        // forced by a configuration option), it won't be recorded on the
-        // histogram.
-        op_size_histogram delete_item_op_size_kb;
-        // A size is the maximum of existing item's size and the estimated size
-        // of the update. This will be changed to the maximum of the existing item's
-        // size and the new item's size in a subsequent PR.
-        op_size_histogram update_item_op_size_kb;
-
-        // A size is the sum of the sizes of all items per table. This means
-        // that a single BatchGetItem / BatchWriteItem updates the histogram
-        // for each table that it has items in.
-        // The sizes are the retrieved items' sizes grouped per table.
-        op_size_histogram batch_get_item_op_size_kb;
-        // The sizes are the the written items' sizes grouped per table.
-        op_size_histogram batch_write_item_op_size_kb;
-    } operation_sizes;
-    // Count of authentication and authorization failures, counted if either
-    // alternator_enforce_authorization or alternator_warn_authorization are
-    // set to true. If both are false, no authentication or authorization
-    // checks are performed, so failures are not recognized or counted.
-    // "authentication" failure means the request was not signed with a valid
-    // user and key combination. "authorization" failure means the request was
-    // authenticated to a valid user - but this user did not have permissions
-    // to perform the operation (considering RBAC settings and the user's
-    // superuser status).
-    uint64_t authentication_failures = 0;
-    uint64_t authorization_failures = 0;
     // Miscellaneous event counters
     uint64_t total_operations = 0;
     uint64_t unsupported_operations = 0;
@@ -140,22 +101,6 @@ public:
     uint64_t wcu_total[NUM_TYPES] = {0};
     // CQL-derived stats
     cql3::cql_stats cql_stats;
-
-    // Enumeration of expression types only for stats
-    // if needed it can be extended e.g. per operation
-    enum expression_types {
-        UPDATE_EXPRESSION,
-        CONDITION_EXPRESSION,
-        PROJECTION_EXPRESSION,
-        NUM_EXPRESSION_TYPES
-    };
-    struct {
-        struct {
-            uint64_t hits = 0;
-            uint64_t misses = 0;
-        } requests[NUM_EXPRESSION_TYPES];
-        uint64_t evictions = 0;
-    } expression_cache;
 };
 
 struct table_stats {
@@ -165,8 +110,4 @@ struct table_stats {
 };
 void register_metrics(seastar::metrics::metric_groups& metrics, const stats& stats);
 
-inline uint64_t bytes_to_kb_ceil(uint64_t bytes) {
-    return (bytes) / 1024;
-}
-
 }

alternator/streams.hh

@@ -1,62 +0,0 @@
-/*
- * Copyright 2026-present ScyllaDB
- */
-
-/*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
- */
-
-#pragma once
-
-#include "utils/chunked_vector.hh"
-#include "cdc/generation.hh"
-#include <generator>
-
-namespace cdc {
-    class stream_id;
-}
-
-namespace alternator {
-    class stream_id_range {
-        // helper class for manipulating (possibly wrapped around) range of stream_ids
-        // it holds one or two ranges [lo1, end1) and [lo2, end2)
-        // if the range doesn't wrap around, then lo2 == end2 == items.end()
-        // if the range wraps around, then
-        // `lo1 == items.begin() and end2 == items.end()` must be true
-        // the object doesn't own `items`, but it does manipulate it - it will
-        // reorder elements (so both ranges were next to each other) and sort them by unsigned comparison
-        // usage - create an object with needed ranges. before iteration call `prepare_for_iterating` method -
-        // it will reorder elements of `items` array to what is needed and then call begin / end pair.
-        // note - `items` array will be modified - elements will be reordered, but no elements will be added or removed.
-        // `items` array must stay intact as long as iteration is in progress.
-        utils::chunked_vector<cdc::stream_id>::iterator _lo1 = {}, _end1 = {}, _lo2 = {}, _end2 = {};
-        const cdc::stream_id* _skip_to = nullptr;
-        bool _prepared = false;
-    public:
-        stream_id_range(
-                utils::chunked_vector<cdc::stream_id> &items,
-                utils::chunked_vector<cdc::stream_id>::iterator lo1,
-                utils::chunked_vector<cdc::stream_id>::iterator end1);
-        stream_id_range(
-                utils::chunked_vector<cdc::stream_id> &items,
-                utils::chunked_vector<cdc::stream_id>::iterator lo1,
-                utils::chunked_vector<cdc::stream_id>::iterator end1,
-                utils::chunked_vector<cdc::stream_id>::iterator lo2,
-                utils::chunked_vector<cdc::stream_id>::iterator end2);
-
-        void set_starting_position(const cdc::stream_id &update_to);
-        // Must be called after construction and after set_starting_position()
-        // (if used), but before begin()/end() iteration.
-        void prepare_for_iterating();
-
-        utils::chunked_vector<cdc::stream_id>::iterator begin() const { return _lo1; }
-        utils::chunked_vector<cdc::stream_id>::iterator end() const { return _end1; }
-    };
-
-    stream_id_range find_children_range_from_parent_token(
-        const utils::chunked_vector<cdc::stream_id>& parent_streams,
-        utils::chunked_vector<cdc::stream_id>& current_streams,
-        cdc::stream_id parent,
-        bool uses_tablets
-    );
-}

alternator/ttl.cc

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #include <chrono>
@@ -17,7 +17,6 @@
 #include <seastar/core/lowres_clock.hh>
 #include <seastar/coroutine/maybe_yield.hh>
 
-#include "cdc/log.hh"
 #include "exceptions/exceptions.hh"
 #include "gms/gossiper.hh"
 #include "gms/inet_address.hh"
@@ -28,7 +27,7 @@
 #include "replica/database.hh"
 #include "service/client_state.hh"
 #include "service_permit.hh"
-#include "mutation/timestamp.hh"
+#include "timestamp.hh"
 #include "service/storage_proxy.hh"
 #include "service/pager/paging_state.hh"
 #include "service/pager/query_pagers.hh"
@@ -44,10 +43,8 @@
 #include "cql3/query_options.hh"
 #include "cql3/column_identifier.hh"
 #include "alternator/executor.hh"
-#include "alternator/executor_util.hh"
 #include "alternator/controller.hh"
 #include "alternator/serialization.hh"
-#include "alternator/ttl_tag.hh"
 #include "dht/sharder.hh"
 #include "db/config.hh"
 #include "db/tags/utils.hh"
@@ -59,17 +56,22 @@ static logging::logger tlogger("alternator_ttl");
 
 namespace alternator {
 
-future<executor::request_return_type> executor::update_time_to_live(client_state& client_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
+// We write the expiration-time attribute enabled on a table using a
+// tag TTL_TAG_KEY.
+// Currently, the *value* of this tag is simply the name of the attribute,
+// and the expiration scanner interprets it as an Alternator attribute name -
+// It can refer to a real column or if that doesn't exist, to a member of
+// the ":attrs" map column. Although this is designed for Alternator, it may
+// be good enough for CQL as well (there, the ":attrs" column won't exist).
+static const sstring TTL_TAG_KEY("system:ttl_attribute");
+
+future<executor::request_return_type> executor::update_time_to_live(client_state& client_state, service_permit permit, rjson::value request) {
     _stats.api_operations.update_time_to_live++;
-    if (!_proxy.features().alternator_ttl) {
-        co_return api_error::unknown_operation("UpdateTimeToLive not yet supported. Upgrade all nodes to a version that supports it.");
+    if (!_proxy.data_dictionary().features().alternator_ttl) {
+        co_return api_error::unknown_operation("UpdateTimeToLive not yet supported. Experimental support is available if the 'alternator-ttl' experimental feature is enabled on all nodes.");
     }
 
     schema_ptr schema = get_table(_proxy, request);
-
-    maybe_audit(audit_info, audit::statement_category::DDL,
-                schema->ks_name(), schema->cf_name(), "UpdateTimeToLive", request);
-
     rjson::value* spec = rjson::find(request, "TimeToLiveSpecification");
     if (!spec || !spec->IsObject()) {
         co_return api_error::validation("UpdateTimeToLive missing mandatory TimeToLiveSpecification");
@@ -90,9 +92,9 @@ future<executor::request_return_type> executor::update_time_to_live(client_state
     if (v->GetStringLength() < 1 || v->GetStringLength() > 255) {
         co_return api_error::validation("The length of AttributeName must be between 1 and 255");
     }
-    sstring attribute_name = rjson::to_sstring(*v);
+    sstring attribute_name(v->GetString(), v->GetStringLength());
 
-    co_await verify_permission(_enforce_authorization, _warn_authorization, client_state, schema, auth::permission::ALTER, _stats);
+    co_await verify_permission(_enforce_authorization, client_state, schema, auth::permission::ALTER);
     co_await db::modify_tags(_mm, schema->ks_name(), schema->cf_name(), [&](std::map<sstring, sstring>& tags_map) {
         if (enabled) {
             if (tags_map.contains(TTL_TAG_KEY)) {
@@ -119,13 +121,9 @@ future<executor::request_return_type> executor::update_time_to_live(client_state
     co_return rjson::print(std::move(response));
 }
 
-future<executor::request_return_type> executor::describe_time_to_live(client_state& client_state, service_permit permit, rjson::value request, std::unique_ptr<audit::audit_info_alternator>& audit_info) {
+future<executor::request_return_type> executor::describe_time_to_live(client_state& client_state, service_permit permit, rjson::value request) {
     _stats.api_operations.describe_time_to_live++;
     schema_ptr schema = get_table(_proxy, request);
-    
-    maybe_audit(audit_info, audit::statement_category::QUERY,
-                schema->ks_name(), schema->cf_name(), "DescribeTimeToLive", request);
-
     std::map<sstring, sstring> tags_map = get_tags_of_table_or_throw(schema);
     rjson::value desc = rjson::empty_object();
     auto i = tags_map.find(TTL_TAG_KEY);
@@ -142,7 +140,7 @@ future<executor::request_return_type> executor::describe_time_to_live(client_sta
 
 // expiration_service is a sharded service responsible for cleaning up expired
 // items in all tables with per-item expiration enabled. Currently, this means
-// Alternator tables with TTL configured via an UpdateTimeToLive request.
+// Alternator tables with TTL configured via a UpdateTimeToLive request.
 //
 // Here is a brief overview of how the expiration service works:
 //
@@ -288,18 +286,13 @@ static future<> expire_item(service::storage_proxy& proxy,
         auto ck = clustering_key::from_exploded(exploded_ck);
         m.partition().clustered_row(*schema, ck).apply(tombstone(ts, gc_clock::now()));
     }
-    utils::chunked_vector<mutation> mutations;
+    std::vector<mutation> mutations;
     mutations.push_back(std::move(m));
     return proxy.mutate(std::move(mutations),
         db::consistency_level::LOCAL_QUORUM,
         executor::default_timeout(), // FIXME - which timeout?
         qs.get_trace_state(), qs.get_permit(),
-        db::allow_per_partition_rate_limit::no,
-        false,
-        cdc::per_request_options{
-            .is_system_originated = true,
-        }
-    );
+        db::allow_per_partition_rate_limit::no);
 }
 
 static size_t random_offset(size_t min, size_t max) {
@@ -320,16 +313,17 @@ static size_t random_offset(size_t min, size_t max) {
 //
 // The function is to be used with vnodes only
 static future<std::vector<std::pair<dht::token_range, locator::host_id>>> get_secondary_ranges(
-        const locator::effective_replication_map* erm,
+        const locator::effective_replication_map_ptr& erm,
         locator::host_id ep) {
     const auto& tm = *erm->get_token_metadata_ptr();
     const auto& sorted_tokens = tm.sorted_tokens();
     std::vector<std::pair<dht::token_range, locator::host_id>> ret;
-    throwing_assert(!sorted_tokens.empty());
+    if (sorted_tokens.empty()) {
+        on_internal_error(tlogger, "Token metadata is empty");
+    }
     auto prev_tok = sorted_tokens.back();
     for (const auto& tok : sorted_tokens) {
         co_await coroutine::maybe_yield();
-        // FIXME: pass is_vnode=true to get_natural_replicas since the token is in tm.sorted_tokens()
         host_id_vector_replica_set eps = erm->get_natural_replicas(tok);
         if (eps.size() <= 1 || eps[1] != ep) {
             prev_tok = tok;
@@ -399,7 +393,7 @@ class ranges_holder_primary {
     dht::token_range_vector _token_ranges;
 public:
     explicit ranges_holder_primary(dht::token_range_vector token_ranges) : _token_ranges(std::move(token_ranges)) {}
-    static future<ranges_holder_primary> make(const locator::vnode_effective_replication_map* erm, locator::host_id ep) {
+    static future<ranges_holder_primary> make(const locator::vnode_effective_replication_map_ptr& erm, locator::host_id ep) {
         co_return ranges_holder_primary(co_await erm->get_primary_ranges(ep));
     }
     std::size_t size() const { return _token_ranges.size(); }
@@ -419,7 +413,7 @@ public:
     explicit ranges_holder_secondary(std::vector<std::pair<dht::token_range, locator::host_id>> token_ranges, const gms::gossiper& g)
         : _token_ranges(std::move(token_ranges))
         , _gossiper(g) {}
-    static future<ranges_holder_secondary> make(const locator::vnode_effective_replication_map* erm, locator::host_id ep, const gms::gossiper& g) {
+    static future<ranges_holder_secondary> make(const locator::effective_replication_map_ptr& erm, locator::host_id ep, const gms::gossiper& g) {
         co_return ranges_holder_secondary(co_await get_secondary_ranges(erm, ep), g);
     }
     std::size_t size() const { return _token_ranges.size(); }
@@ -527,7 +521,7 @@ struct scan_ranges_context {
         // should be possible (and a must for issue #7751!).
         lw_shared_ptr<service::pager::paging_state> paging_state = nullptr;
         auto regular_columns =
-            s->regular_columns() | std::views::transform(&column_definition::id)
+            s->regular_columns() | std::views::transform([] (const column_definition& cdef) { return cdef.id; })
             | std::ranges::to<query::column_id_vector>();
         selection = cql3::selection::selection::wildcard(s);
         query::partition_slice::option_set opts = selection->get_query_options();
@@ -562,7 +556,7 @@ static future<> scan_table_ranges(
         expiration_service::stats& expiration_stats)
 {
     const schema_ptr& s = scan_ctx.s;
-    throwing_assert(partition_ranges.size() == 1); // otherwise issue #9167 will cause incorrect results.
+    SCYLLA_ASSERT (partition_ranges.size() == 1); // otherwise issue #9167 will cause incorrect results.
     auto p = service::pager::query_pagers::pager(proxy, s, scan_ctx.selection, *scan_ctx.query_state_ptr,
             *scan_ctx.query_options, scan_ctx.command, std::move(partition_ranges), nullptr);
     while (!p->is_exhausted()) {
@@ -592,7 +586,7 @@ static future<> scan_table_ranges(
             if (retries >= 10) {
                 // Don't get stuck forever asking the same page, maybe there's
                 // a bug or a real problem in several replicas. Give up on
-                // this scan and retry the scan from a random position later,
+                // this scan an retry the scan from a random position later,
                 // in the next scan period.
                 throw runtime_exception("scanner thread failed after too many timeouts for the same page");
             }
@@ -639,38 +633,13 @@ static future<> scan_table_ranges(
                 }
             } else {
                 // For a real column to contain an expiration time, it
-                // must be a numeric type. We currently support decimal
-                // (used by Alternator TTL) as well as bigint, int and
-                // timestamp (used by CQL per-row TTL).
-                switch (meta[*expiration_column]->type->get_kind()) {
-                    case abstract_type::kind::decimal:
-                        // Used by Alternator TTL for key columns not stored
-                        // in the map. The value is in seconds, fractional
-                        // part is ignored.
-                        expired = is_expired(value_cast<big_decimal>(v), now);
-                        break;
-                    case abstract_type::kind::long_kind:
-                        // Used by CQL per-row TTL. The value is in seconds.
-                        expired = is_expired(gc_clock::time_point(std::chrono::seconds(value_cast<int64_t>(v))), now);
-                        break;
-                    case abstract_type::kind::int32:
-                        // Used by CQL per-row TTL. The value is in seconds.
-                        // Using int type is not recommended because it will
-                        // overflow in 2038, but we support it to allow users
-                        // to use existing int columns for expiration.
-                        expired = is_expired(gc_clock::time_point(std::chrono::seconds(value_cast<int32_t>(v))), now);
-                        break;
-                    case abstract_type::kind::timestamp:
-                        // Used by CQL per-row TTL. The value is in milliseconds
-                        // but we truncate it to gc_clock's precision (whole seconds).
-                        expired = is_expired(gc_clock::time_point(std::chrono::duration_cast<gc_clock::duration>(value_cast<db_clock::time_point>(v).time_since_epoch())), now);
-                        break;
-                    default:
-                        // Should never happen - we verified the column's type
-                        // before starting the scan.
-                        [[unlikely]]
-                        on_internal_error(tlogger, format("expiration scanner value of unsupported type {} in column {}", meta[*expiration_column]->type->cql3_type_name(), scan_ctx.column_name) );
-                }
+                // must be a numeric type.
+                // FIXME: Currently we only support decimal_type (which is
+                // what Alternator uses), but other numeric types can be
+                // supported as well to make this feature more useful in CQL.
+                // Note that kind::decimal is also checked above.
+                big_decimal n = value_cast<big_decimal>(v);
+                expired = is_expired(n, now);
             }
             if (expired) {
                 expiration_stats.items_deleted++;
@@ -732,12 +701,16 @@ static future<bool> scan_table(
         co_return false;
     }
     // attribute_name may be one of the schema's columns (in Alternator, this
-    // means a key column, in CQL it's a regular column), or an element in
-    // Alternator's attrs map encoded in Alternator's JSON encoding (which we
-    // decode). If attribute_name is a real column, in Alternator it will have
-    // the type decimal, counting seconds since the UNIX epoch, while in CQL
-    // it will one of the types bigint or int (counting seconds) or timestamp
-    // (counting milliseconds).
+    // means it's a key column), or an element in Alternator's attrs map
+    // encoded in Alternator's JSON encoding.
+    // FIXME: To make this less Alternators-specific, we should encode in the
+    // single key's value three things:
+    // 1. The name of a column
+    // 2. Optionally if column is a map, a member in the map
+    // 3. The deserializer for the value: CQL or Alternator (JSON).
+    // The deserializer can be guessed: If the given column or map item is
+    // numeric, it can be used directly. If it is a "bytes" type, it needs to
+    // be deserialized using Alternator's deserializer.
     bytes column_name = to_bytes(*attribute_name);
     const column_definition *cd = s->get_column_definition(column_name);
     std::optional<std::string> member;
@@ -756,14 +729,11 @@ static future<bool> scan_table(
     data_type column_type = cd->type;
     // Verify that the column has the right type: If "member" exists
     // the column must be a map, and if it doesn't, the column must
-    // be decimal_type (Alternator), bigint, int or timestamp (CQL).
-    // If the column has the wrong type nothing can get expired in
-    // this table, and it's pointless to scan it.
+    // (currently) be a decimal_type. If the column has the wrong type
+    // nothing can get expired in this table, and it's pointless to
+    // scan it.
     if ((member && column_type->get_kind() != abstract_type::kind::map) ||
-        (!member && column_type->get_kind() != abstract_type::kind::decimal &&
-         column_type->get_kind() != abstract_type::kind::long_kind &&
-         column_type->get_kind() != abstract_type::kind::int32 &&
-         column_type->get_kind() != abstract_type::kind::timestamp)) {
+        (!member && column_type->get_kind() != abstract_type::kind::decimal)) {
         tlogger.info("table {} TTL column has unsupported type, not scanning", s->cf_name());
         co_return false;
     }
@@ -776,7 +746,7 @@ static future<bool> scan_table(
         auto my_host_id = erm->get_topology().my_host_id();
         const auto &tablet_map = erm->get_token_metadata().tablets().get_tablet_map(s->id());
         for (std::optional tablet = tablet_map.first_tablet(); tablet; tablet = tablet_map.next_tablet(*tablet)) {
-            auto tablet_primary_replica = tablet_map.get_primary_replica(*tablet, erm->get_topology());
+            auto tablet_primary_replica = tablet_map.get_primary_replica(*tablet);
             // check if this is the primary replica for the current tablet
             if (tablet_primary_replica.host == my_host_id && tablet_primary_replica.shard == this_shard_id()) {
                 co_await scan_tablet(*tablet, proxy, abort_source, page_sem, expiration_stats, scan_ctx, tablet_map);
@@ -790,7 +760,7 @@ static future<bool> scan_table(
                 // by tasking another node to take over scanning of the dead node's primary
                 // ranges. What we do here is that this node will also check expiration
                 // on its *secondary* ranges - but only those whose primary owner is down.
-                auto tablet_secondary_replica = tablet_map.get_secondary_replica(*tablet, erm->get_topology()); // throws if no secondary replica
+                auto tablet_secondary_replica = tablet_map.get_secondary_replica(*tablet); // throws if no secondary replica
                 if (tablet_secondary_replica.host == my_host_id && tablet_secondary_replica.shard == this_shard_id()) {
                     if (!gossiper.is_alive(tablet_primary_replica.host)) {
                         co_await scan_tablet(*tablet, proxy, abort_source, page_sem, expiration_stats, scan_ctx, tablet_map);
@@ -799,12 +769,8 @@ static future<bool> scan_table(
             }
         }
     } else {  // VNodes
-        locator::static_effective_replication_map_ptr ermp =
-                db.real_database().find_keyspace(s->ks_name()).get_static_effective_replication_map();
-        auto* erm = ermp->maybe_as_vnode_effective_replication_map();
-        if (!erm) {
-            on_internal_error(tlogger, format("Keyspace {} is local", s->ks_name()));
-        }
+        locator::vnode_effective_replication_map_ptr erm =
+                db.real_database().find_keyspace(s->ks_name()).get_vnode_effective_replication_map();
         auto my_host_id = erm->get_topology().my_host_id();
         token_ranges_owned_by_this_shard my_ranges(s, co_await ranges_holder_primary::make(erm, my_host_id));
         while (std::optional<dht::partition_range> range = my_ranges.next_partition_range()) {
@@ -901,10 +867,12 @@ future<> expiration_service::run() {
 future<> expiration_service::start() {
     // Called by main() on each shard to start the expiration-service
     // thread. Just runs run() in the background and allows stop().
-    if (!shutting_down()) {
-        _end = run().handle_exception([] (std::exception_ptr ep) {
-            tlogger.error("expiration_service failed: {}", ep);
-        });
+    if (_db.features().alternator_ttl) {
+        if (!shutting_down()) {
+            _end = run().handle_exception([] (std::exception_ptr ep) {
+                tlogger.error("expiration_service failed: {}", ep);
+            });
+        }
     }
     return make_ready_future<>();
 }

alternator/ttl.hh

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #pragma once
@@ -30,7 +30,7 @@ namespace alternator {
 
 // expiration_service is a sharded service responsible for cleaning up expired
 // items in all tables with per-item expiration enabled. Currently, this means
-// Alternator tables with TTL configured via an UpdateTimeToLive request.
+// Alternator tables with TTL configured via a UpdateTimeToLeave request.
 class expiration_service final : public seastar::peering_sharded_service<expiration_service> {
 public:
     // Object holding per-shard statistics related to the expiration service.
@@ -52,7 +52,7 @@ private:
     data_dictionary::database _db;
     service::storage_proxy& _proxy;
     gms::gossiper& _gossiper;
-    // _end is set by start(), and resolves when the background service
+    // _end is set by start(), and resolves when the the background service
     // started by it ends. To ask the background service to end, _abort_source
     // should be triggered. stop() below uses both _abort_source and _end.
     std::optional<future<>> _end;

alternator/ttl_tag.hh

@@ -1,26 +0,0 @@
-/*
- * Copyright 2026-present ScyllaDB
- */
-
-/*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
- */
-
-#pragma once
-
-#include "seastarx.hh"
-#include <seastar/core/sstring.hh>
-
-namespace alternator {
-// We use the table tag TTL_TAG_KEY ("system:ttl_attribute") to remember
-// which attribute was chosen as the expiration-time attribute for
-// Alternator's TTL and CQL's per-row TTL features.
-// Currently, the *value* of this tag is simply the name of the attribute:
-// It can refer to a real column or if that doesn't exist, to a member of
-// the ":attrs" map column (which Alternator uses).
-extern const sstring TTL_TAG_KEY;
-} // namespace alternator
-
-// let users use TTL_TAG_KEY without the "alternator::" prefix,
-// to make it easier to move it to a different namespace later.
-using alternator::TTL_TAG_KEY;

api/CMakeLists.txt

@@ -31,7 +31,6 @@ set(swagger_files
   api-doc/column_family.json
   api-doc/commitlog.json
   api-doc/compaction_manager.json
-  api-doc/client_routes.json
   api-doc/config.json
   api-doc/cql_server_test.json
   api-doc/endpoint_snitch_info.json
@@ -69,7 +68,6 @@ target_sources(api
   PRIVATE
     api.cc
     cache_service.cc
-    client_routes.cc
     collectd.cc
     column_family.cc
     commitlog.cc
@@ -108,8 +106,5 @@ target_link_libraries(api
     wasmtime_bindings
     absl::headers)
 
-if (Scylla_USE_PRECOMPILED_HEADER_USE)
-  target_precompile_headers(api REUSE_FROM scylla-precompiled-header)
-endif()
 check_headers(check-headers api
   GLOB_RECURSE ${CMAKE_CURRENT_SOURCE_DIR}/*.hh)

api/api-doc/authorization_cache.json

@@ -12,7 +12,7 @@
       "operations":[
         {
           "method":"POST",
-          "summary":"Resets authorized prepared statements cache",
+          "summary":"Reset cache",
           "type":"void",
           "nickname":"authorization_cache_reset",
           "produces":[

api/api-doc/client_routes.def.json

@@ -1,23 +0,0 @@
-    , "client_routes_entry": {
-        "id": "client_routes_entry",
-        "summary": "An entry storing client routes",
-        "properties": {
-            "connection_id": {"type": "string"},
-            "host_id": {"type": "string", "format": "uuid"},
-            "address": {"type": "string"},
-            "port": {"type": "integer"},
-            "tls_port": {"type": "integer"},
-            "alternator_port": {"type": "integer"},
-            "alternator_https_port": {"type": "integer"}
-        },
-        "required": ["connection_id", "host_id", "address"]
-    }
-    , "client_routes_key": {
-        "id": "client_routes_key",
-        "summary": "A key of client_routes_entry",
-        "properties": {
-            "connection_id": {"type": "string"},
-            "host_id": {"type": "string", "format": "uuid"}
-        }
-    }
-

api/api-doc/client_routes.json

@@ -1,74 +0,0 @@
-    , "/v2/client-routes":{
-        "get": {
-            "description":"List all client route entries",
-            "operationId":"get_client_routes",
-            "tags":["client_routes"],
-            "produces":[
-                "application/json"
-            ],
-            "parameters":[],
-            "responses":{
-                "200":{
-                    "schema":{
-                        "type":"array",
-                        "items":{ "$ref":"#/definitions/client_routes_entry" }
-                    }
-                },
-                "default":{
-                    "description":"unexpected error",
-                    "schema":{"$ref":"#/definitions/ErrorModel"}
-                }
-            }
-        },
-        "post": {
-            "description":"Upsert one or more client route entries",
-            "operationId":"set_client_routes",
-            "tags":["client_routes"],
-            "parameters":[
-                {
-                    "name":"body",
-                    "in":"body",
-                    "required":true,
-                    "schema":{
-                        "type":"array",
-                        "items":{ "$ref":"#/definitions/client_routes_entry" }
-                    }
-                }
-            ],
-            "responses":{
-                "200":{ "description": "OK" },
-                "default":{
-                    "description":"unexpected error",
-                    "schema":{ "$ref":"#/definitions/ErrorModel" }
-                }
-            }
-        },
-        "delete": {
-            "description":"Delete one or more client route entries",
-            "operationId":"delete_client_routes",
-            "tags":["client_routes"],
-            "parameters":[
-                {
-                    "name":"body",
-                    "in":"body",
-                    "required":true,
-                    "schema":{
-                        "type":"array",
-                        "items":{ "$ref":"#/definitions/client_routes_key" }
-                    }
-                }
-            ],
-            "responses":{
-                "200":{
-                    "description": "OK"
-                },
-                "default":{
-                    "description":"unexpected error",
-                    "schema":{
-                        "$ref":"#/definitions/ErrorModel"
-                    }
-                }
-            }
-        }
-    }
-

api/api-doc/messaging_service.json

@@ -243,7 +243,7 @@
                  "GOSSIP_DIGEST_SYN",
                  "GOSSIP_DIGEST_ACK2",
                  "GOSSIP_SHUTDOWN",
-                 "UNUSED__DEFINITIONS_UPDATE",
+                 "DEFINITIONS_UPDATE",
                  "TRUNCATE",
                  "UNUSED__REPLICATION_FINISHED",
                  "MIGRATION_REQUEST",

api/api-doc/storage_service.json

@@ -220,25 +220,6 @@
             }
          ]
       },
-      {
-         "path":"/storage_service/nodes/excluded",
-         "operations":[
-            {
-               "method":"GET",
-               "summary":"Retrieve host ids of nodes which are marked as excluded",
-               "type":"array",
-               "items":{
-                  "type":"string"
-               },
-               "nickname":"get_excluded_nodes",
-               "produces":[
-                  "application/json"
-               ],
-               "parameters":[
-               ]
-            }
-         ]
-      },
       {
          "path":"/storage_service/nodes/joining",
          "operations":[
@@ -613,50 +594,6 @@
             }
          ]
       },
-      {
-         "path": "/storage_service/natural_endpoints/v2/{keyspace}",
-         "operations": [
-            {
-               "method": "GET",
-               "summary":"This method returns the N endpoints that are responsible for storing the specified key i.e for replication. the endpoint responsible for this key",
-               "type": "array",
-               "items": {
-                  "type": "string"
-               },
-               "nickname": "get_natural_endpoints_v2",
-               "produces": [
-                  "application/json"
-               ],
-               "parameters": [
-                  {
-                     "name": "keyspace",
-                     "description": "The keyspace to query about.",
-                     "required": true,
-                     "allowMultiple": false,
-                     "type": "string",
-                     "paramType": "path"
-                  },
-                  {
-                     "name": "cf",
-                     "description": "Column family name.",
-                     "required": true,
-                     "allowMultiple": false,
-                     "type": "string",
-                     "paramType": "query"
-                  },
-                  {
-                     "name": "key_component",
-                     "description": "Each component of the key for which we need to find the endpoint (e.g. ?key_component=part1&key_component=part2).",
-                     "required": true,
-                     "allowMultiple": true,
-                     "type": "string",
-                     "paramType": "query"
-                  }
-               ]
-            }
-         ]
-      },
-
       {
          "path":"/storage_service/cdc_streams_check_and_repair",
          "operations":[
@@ -743,7 +680,7 @@
                "parameters":[
                   {
                      "name":"tag",
-                     "description":"The snapshot tag to delete. If omitted, all snapshots are removed.",
+                     "description":"the tag given to the snapshot",
                      "required":false,
                      "allowMultiple":false,
                      "type":"string",
@@ -751,7 +688,7 @@
                   },
                   {
                      "name":"kn",
-                     "description":"Comma-separated list of keyspace names to delete snapshots from. If omitted, snapshots are deleted from all keyspaces.",
+                     "description":"Comma-separated keyspaces name that their snapshot will be deleted",
                      "required":false,
                      "allowMultiple":false,
                      "type":"string",
@@ -759,7 +696,7 @@
                   },
                   {
                      "name":"cf",
-                     "description":"A table name used to filter which table's snapshots are deleted. If omitted or empty, snapshots for all tables are eligible. When provided together with 'kn', the table is looked up in each listed keyspace independently. For secondary indexes, the logical index name (e.g. 'myindex') can be used and is resolved automatically.",
+                     "description":"an optional table name that its snapshot will be deleted",
                      "required":false,
                      "allowMultiple":false,
                      "type":"string",
@@ -961,14 +898,6 @@
                           "type":"string",
                           "paramType":"query",
                           "enum": ["all", "dc", "rack", "node"]
-                      },
-                      {
-                         "name":"primary_replica_only",
-                         "description":"Load the sstables and stream to the primary replica node within the scope, if one is specified. If not, stream to the global primary replica.",
-                         "required":false,
-                         "allowMultiple":false,
-                         "type":"boolean",
-                         "paramType":"query"
                       }
                   ]
               }
@@ -1055,7 +984,7 @@
          ]
       },
       {
-         "path":"/storage_service/cleanup_all/",
+         "path":"/storage_service/cleanup_all",
          "operations":[
             {
                "method":"POST",
@@ -1065,30 +994,6 @@
                "produces":[
                   "application/json"
                ],
-               "parameters":[
-                    {
-                     "name":"global",
-                     "description":"true if cleanup of entire cluster is requested",
-                     "required":false,
-                     "allowMultiple":false,
-                     "type":"boolean",
-                     "paramType":"query"
-                  }
-               ]
-            }
-         ]
-      },
-      {
-         "path":"/storage_service/mark_node_as_clean",
-         "operations":[
-            {
-               "method":"POST",
-               "summary":"Mark the node as clean. After that the node will not be considered as needing cleanup during automatic cleanup which is triggered by some topology operations",
-               "type":"void",
-               "nickname":"reset_cleanup_needed",
-               "produces":[
-                  "application/json"
-               ],
                "parameters":[]
             }
          ]
@@ -1195,14 +1100,6 @@
                      "allowMultiple":false,
                      "type":"string",
                      "paramType":"query"
-                  },
-                  {
-                     "name": "drop_unfixable_sstables",
-                     "description": "When set to true, drop unfixable sstables. Applies only to scrub mode SEGREGATE.",
-                     "required":false,
-                     "allowMultiple":false,
-                     "type":"boolean",
-                     "paramType":"query"
                   }
                ]
             }
@@ -1295,45 +1192,6 @@
             }
          ]
       },
-      {
-         "path":"/storage_service/logstor_compaction",
-         "operations":[
-            {
-               "method":"POST",
-               "summary":"Trigger compaction of the key-value storage",
-               "type":"void",
-               "nickname":"logstor_compaction",
-               "produces":[
-                  "application/json"
-               ],
-               "parameters":[
-                  {
-                     "name":"major",
-                     "description":"When true, perform a major compaction",
-                     "required":false,
-                     "allowMultiple":false,
-                     "type":"boolean",
-                     "paramType":"query"
-                  }
-               ]
-            }
-         ]
-      },
-      {
-         "path":"/storage_service/logstor_flush",
-         "operations":[
-            {
-               "method":"POST",
-               "summary":"Trigger flush of logstor storage",
-               "type":"void",
-               "nickname":"logstor_flush",
-               "produces":[
-                  "application/json"
-               ],
-               "parameters":[]
-            }
-         ]
-      },
       {
          "path":"/storage_service/active_repair/",
          "operations":[
@@ -1661,30 +1519,6 @@
             }
          ]
       },
-      {
-         "path":"/storage_service/exclude_node",
-         "operations":[
-            {
-               "method":"POST",
-               "summary":"Marks the node as permanently down (excluded).",
-               "type":"void",
-               "nickname":"exclude_node",
-               "produces":[
-                  "application/json"
-               ],
-               "parameters":[
-                  {
-                     "name":"hosts",
-                     "description":"Comma-separated list of host ids to exclude",
-                     "required":true,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"query"
-                  }
-               ]
-            }
-         ]
-      },
       {
          "path":"/storage_service/removal_status",
          "operations":[
@@ -3087,14 +2921,6 @@
                      "allowMultiple":false,
                      "type":"string",
                      "paramType":"query"
-                  },
-                  {
-                     "name":"incremental_mode",
-                     "description":"Set the incremental repair mode. Can be 'disabled', 'incremental', or 'full'. 'incremental': The incremental repair logic is enabled. Unrepaired sstables will be included for repair. Repaired sstables will be skipped. The incremental repair states will be updated after repair. 'full': The incremental repair logic is enabled. Both repaired and unrepaired sstables will be included for repair. The incremental repair states will be updated after repair. 'disabled': The incremental repair logic is disabled completely. The incremental repair states, e.g., repaired_at in sstables and sstables_repaired_at in the system.tablets table, will not be updated after repair. When the option is not provided, it defaults to incremental mode.",
-                     "required":false,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"query"
                   }
                ]
             }
@@ -3124,125 +2950,6 @@
             }
          ]
       },
-
-      {
-         "path":"/storage_service/tablets/snapshots",
-         "operations":[
-            {
-               "method":"POST",
-               "summary":"Takes the snapshot for the given keyspaces/tables. A snapshot name must be specified.",
-               "type":"void",
-               "nickname":"take_cluster_snapshot",
-               "produces":[
-                  "application/json"
-               ],
-               "parameters":[
-                  {
-                     "name":"tag",
-                     "description":"the tag given to the snapshot",
-                     "required":true,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"query"
-                  },
-                  {
-                     "name":"keyspace",
-                     "description":"Keyspace(s) to snapshot. Multiple keyspaces can be provided using a comma-separated list. If omitted, snapshot all keyspaces.",
-                     "required":false,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"query"
-                  },
-                  {
-                     "name":"table",
-                     "description":"Table(s) to snapshot. Multiple tables (in a single keyspace) can be provided using a comma-separated list. If omitted, snapshot all tables in the given keyspace(s).",
-                     "required":false,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"query"
-                  }
-               ]
-            }
-         ]
-      },
-
-      {
-         "path":"/storage_service/vnode_tablet_migrations/keyspaces/{keyspace}",
-         "operations":[{
-             "method":"POST",
-             "summary":"Start vnodes-to-tablets migration for all tables in a keyspace",
-             "type":"void",
-             "nickname":"create_vnode_tablet_migration",
-             "produces":["application/json"],
-             "parameters":[
-                 {
-                     "name":"keyspace",
-                     "description":"Keyspace name",
-                     "required":true,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"path"
-                 }
-             ]
-         },
-         {
-             "method":"GET",
-             "summary":"Get a keyspace's vnodes-to-tablets migration status",
-             "type":"vnode_tablet_migration_status",
-             "nickname":"get_vnode_tablet_migration",
-             "produces":["application/json"],
-             "parameters":[
-                 {
-                     "name":"keyspace",
-                     "description":"Keyspace name",
-                     "required":true,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"path"
-                 }
-             ]
-         }]
-      },
-      {
-         "path":"/storage_service/vnode_tablet_migrations/node/storage_mode",
-         "operations":[{
-             "method":"PUT",
-             "summary":"Set the intended storage mode for this node during vnodes-to-tablets migration",
-             "type":"void",
-             "nickname":"set_vnode_tablet_migration_node_storage_mode",
-             "produces":["application/json"],
-             "parameters":[
-                 {
-                     "name":"intended_mode",
-                     "description":"Intended storage mode (tablets or vnodes)",
-                     "required":true,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"query"
-                 }
-             ]
-         }]
-      },
-      {
-         "path":"/storage_service/vnode_tablet_migrations/keyspaces/{keyspace}/finalization",
-         "operations":[{
-             "method":"POST",
-             "summary":"Finalize vnodes-to-tablets migration for all tables in a keyspace",
-             "type":"void",
-             "nickname":"finalize_vnode_tablet_migration",
-             "produces":["application/json"],
-             "parameters":[
-                 {
-                     "name":"keyspace",
-                     "description":"Keyspace name",
-                     "required":true,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"path"
-                 }
-             ]
-         }]
-      },
       {
          "path":"/storage_service/quiesce_topology",
          "operations":[
@@ -3345,38 +3052,6 @@
             }
          ]
       },
-      {
-         "path":"/storage_service/logstor_info",
-         "operations":[
-            {
-               "method":"GET",
-               "summary":"Logstor segment information for one table",
-               "type":"table_logstor_info",
-               "nickname":"logstor_info",
-               "produces":[
-                  "application/json"
-               ],
-               "parameters":[
-                  {
-                     "name":"keyspace",
-                     "description":"The keyspace",
-                     "required":true,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"query"
-                  },
-                  {
-                     "name":"table",
-                     "description":"table name",
-                     "required":true,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"query"
-                  }
-               ]
-            }
-         ]
-      },
       {
          "path":"/storage_service/retrain_dict",
          "operations":[
@@ -3502,38 +3177,6 @@
                ]
             }
          ]
-      },
-      {
-         "path":"/storage_service/drop_quarantined_sstables",
-         "operations":[
-            {
-               "method":"POST",
-               "summary":"Drops all quarantined sstables in all keyspaces or specified keyspace and tables",
-               "type":"void",
-               "nickname":"drop_quarantined_sstables",
-               "produces":[
-                  "application/json"
-               ],
-               "parameters":[
-                  {
-                     "name":"keyspace",
-                     "description":"The keyspace name to drop quarantined sstables from.",
-                     "required":false,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"query"
-                  },
-                  {
-                     "name":"tables",
-                     "description":"Comma-separated table names to drop quarantined sstables from.",
-                     "required":false,
-                     "allowMultiple":false,
-                     "type":"string",
-                     "paramType":"query"
-                  }
-               ]
-            }
-         ]
       }
    ],
    "models":{
@@ -3747,7 +3390,7 @@
             "version":{
                "type":"string",
                "enum":[
-                  "ka", "la", "mc", "md", "me", "ms"
+                  "ka", "la", "mc", "md", "me"
                ],
                "description":"SSTable version"
             },
@@ -3785,47 +3428,6 @@
             }
         }
       },
-        "logstor_hist_bucket":{
-         "id":"logstor_hist_bucket",
-         "properties":{
-            "bucket":{
-               "type":"long"
-            },
-            "count":{
-               "type":"long"
-            },
-            "min_data_size":{
-               "type":"long"
-            },
-            "max_data_size":{
-               "type":"long"
-            }
-         }
-        },
-        "table_logstor_info":{
-         "id":"table_logstor_info",
-         "description":"Per-table logstor segment distribution",
-         "properties":{
-            "keyspace":{
-               "type":"string"
-            },
-            "table":{
-               "type":"string"
-            },
-            "compaction_groups":{
-               "type":"long"
-            },
-            "segments":{
-               "type":"long"
-            },
-            "data_size_histogram":{
-               "type":"array",
-               "items":{
-                  "$ref":"logstor_hist_bucket"
-               }
-            }
-         }
-        },
       "tablet_repair_result":{
         "id":"tablet_repair_result",
         "description":"Tablet repair result",
@@ -3860,45 +3462,6 @@
                "description":"The resulting compression ratio (estimated on a random sample of files)"
             }
          }
-      },
-      "vnode_tablet_migration_node_status":{
-         "id":"vnode_tablet_migration_node_status",
-         "description":"Node storage mode info during vnodes-to-tablets migration",
-         "properties":{
-            "host_id":{
-               "type":"string",
-               "description":"The host ID"
-            },
-            "current_mode":{
-               "type":"string",
-               "description":"The current storage mode: `vnodes` or `tablets`"
-            },
-            "intended_mode":{
-               "type":"string",
-               "description":"The intended storage mode: `vnodes` or `tablets`"
-            }
-         }
-      },
-      "vnode_tablet_migration_status":{
-         "id":"vnode_tablet_migration_status",
-         "description":"Vnodes-to-tablets migration status for a keyspace",
-         "properties":{
-            "keyspace":{
-               "type":"string",
-               "description":"The keyspace name"
-            },
-            "status":{
-               "type":"string",
-               "description":"The migration status: `vnodes` (not started), `migrating_to_tablets` (in progress), or `tablets` (complete)"
-            },
-            "nodes":{
-               "type":"array",
-               "items":{
-                  "$ref":"vnode_tablet_migration_node_status"
-               },
-               "description":"Per-node storage mode information. Empty if the keyspace is not being migrated."
-            }
-         }
       }
    }
 }

api/api-doc/system.json

@@ -209,21 +209,6 @@
                "parameters":[]
             }
          ]
-      },
-      {
-         "path":"/system/chosen_sstable_version",
-         "operations":[
-            {
-               "method":"GET",
-               "summary":"Get sstable version currently chosen for use in new sstables",
-               "type":"string",
-               "nickname":"get_chosen_sstable_version",
-               "produces":[
-                  "application/json"
-               ],
-               "parameters":[]
-            }
-         ]
       }
    ]
 }

api/api-doc/task_manager.json

@@ -447,7 +447,7 @@
                "description":"The number of units completed so far"
             },
             "children_ids":{
-               "type":"chunked_array",
+               "type":"array",
                "items":{
                   "type":"task_identity"
                },

api/api-doc/tasks.json

@@ -42,14 +42,6 @@
                      "allowMultiple":false,
                      "type":"boolean",
                      "paramType":"query"
-                  },
-                  {
-                     "name":"consider_only_existing_data",
-                     "description":"Set to \"true\" to flush all memtables and force tombstone garbage collection to check only the sstables being compacted (false by default). The memtable, commitlog and other uncompacted sstables will not be checked during tombstone garbage collection.",
-                     "required":false,
-                     "allowMultiple":false,
-                     "type":"boolean",
-                     "paramType":"query"
                   }
                ]
             }

api/api.cc

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #include "api.hh"
@@ -37,7 +37,6 @@
 #include "raft.hh"
 #include "gms/gossip_address_map.hh"
 #include "service_levels.hh"
-#include "client_routes.hh"
 
 logging::logger apilog("api");
 
@@ -68,11 +67,9 @@ future<> set_server_init(http_context& ctx) {
         rb02->set_api_doc(r);
         rb02->register_api_file(r, "swagger20_header");
         rb02->register_api_file(r, "metrics");
-        rb02->register_api_file(r, "client_routes");
         rb->register_function(r, "system",
                 "The system related API");
         rb02->add_definitions_file(r, "metrics");
-        rb02->add_definitions_file(r, "client_routes");
         set_system(ctx, r);
         rb->register_function(r, "error_injection",
             "The error injection API");
@@ -122,9 +119,9 @@ future<> unset_thrift_controller(http_context& ctx) {
     return ctx.http_server.set_routes([&ctx] (routes& r) { unset_thrift_controller(ctx, r); });
 }
 
-future<> set_server_storage_service(http_context& ctx, sharded<service::storage_service>& ss, sharded<db::snapshot_ctl>& ssc, service::raft_group0_client& group0_client) {
-    return ctx.http_server.set_routes([&ctx, &ss, &ssc, &group0_client] (routes& r) {
-            set_storage_service(ctx, r, ss, ssc, group0_client);
+future<> set_server_storage_service(http_context& ctx, sharded<service::storage_service>& ss, service::raft_group0_client& group0_client) {
+    return ctx.http_server.set_routes([&ctx, &ss, &group0_client] (routes& r) {
+            set_storage_service(ctx, r, ss, group0_client);
         });
 }
 
@@ -132,16 +129,6 @@ future<> unset_server_storage_service(http_context& ctx) {
     return ctx.http_server.set_routes([&ctx] (routes& r) { unset_storage_service(ctx, r); });
 }
 
-future<> set_server_client_routes(http_context& ctx, sharded<service::client_routes_service>& cr) {
-    return ctx.http_server.set_routes([&ctx, &cr] (routes& r) {
-        set_client_routes(ctx, r, cr);
-    });
-}
-
-future<> unset_server_client_routes(http_context& ctx) {
-    return ctx.http_server.set_routes([&ctx] (routes& r) { unset_client_routes(ctx, r); });
-}
-
 future<> set_load_meter(http_context& ctx, service::load_meter& lm) {
     return ctx.http_server.set_routes([&ctx, &lm] (routes& r) { set_load_meter(ctx, r, lm); });
 }
@@ -150,6 +137,14 @@ future<> unset_load_meter(http_context& ctx) {
     return ctx.http_server.set_routes([&ctx] (routes& r) { unset_load_meter(ctx, r); });
 }
 
+future<> set_format_selector(http_context& ctx, db::sstables_format_selector& sel) {
+    return ctx.http_server.set_routes([&ctx, &sel] (routes& r) { set_format_selector(ctx, r, sel); });
+}
+
+future<> unset_format_selector(http_context& ctx) {
+    return ctx.http_server.set_routes([&ctx] (routes& r) { unset_format_selector(ctx, r); });
+}
+
 future<> set_server_sstables_loader(http_context& ctx, sharded<sstables_loader>& sst_loader) {
     return ctx.http_server.set_routes([&ctx, &sst_loader] (routes& r) { set_sstables_loader(ctx, r, sst_loader); });
 }
@@ -229,22 +224,15 @@ future<> unset_server_gossip(http_context& ctx) {
     });
 }
 
-future<> set_server_column_family(http_context& ctx, sharded<replica::database>& db) {
-    co_await register_api(ctx, "column_family",
-                "The column family API", [&db] (http_context& ctx, routes& r) {
-                    set_column_family(ctx, r, db);
-                });
-    co_await register_api(ctx, "cache_service",
-            "The cache service API", [&db] (http_context& ctx, routes& r) {
-                    set_cache_service(ctx, db, r);
+future<> set_server_column_family(http_context& ctx, sharded<db::system_keyspace>& sys_ks) {
+    return register_api(ctx, "column_family",
+                "The column family API", [&sys_ks] (http_context& ctx, routes& r) {
+                    set_column_family(ctx, r, sys_ks);
                 });
 }
 
 future<> unset_server_column_family(http_context& ctx) {
-    return ctx.http_server.set_routes([&ctx] (routes& r) {
-        unset_column_family(ctx, r);
-        unset_cache_service(ctx, r);
-    });
+    return ctx.http_server.set_routes([&ctx] (routes& r) { unset_column_family(ctx, r); });
 }
 
 future<> set_server_messaging_service(http_context& ctx, sharded<netw::messaging_service>& ms) {
@@ -276,6 +264,15 @@ future<> unset_server_stream_manager(http_context& ctx) {
     return ctx.http_server.set_routes([&ctx] (routes& r) { unset_stream_manager(ctx, r); });
 }
 
+future<> set_server_cache(http_context& ctx) {
+    return register_api(ctx, "cache_service",
+            "The cache service API", set_cache_service);
+}
+
+future<> unset_server_cache(http_context& ctx) {
+    return ctx.http_server.set_routes([&ctx] (routes& r) { unset_cache_service(ctx, r); });
+}
+
 future<> set_hinted_handoff(http_context& ctx, sharded<service::storage_proxy>& proxy, sharded<gms::gossiper>& g) {
     return register_api(ctx, "hinted_handoff",
                 "The hinted handoff API", [&proxy, &g] (http_context& ctx, routes& r) {
@@ -287,7 +284,7 @@ future<> unset_hinted_handoff(http_context& ctx) {
     return ctx.http_server.set_routes([&ctx] (routes& r) { unset_hinted_handoff(ctx, r); });
 }
 
-future<> set_server_compaction_manager(http_context& ctx, sharded<compaction::compaction_manager>& cm) {
+future<> set_server_compaction_manager(http_context& ctx, sharded<compaction_manager>& cm) {
     return register_api(ctx, "compaction_manager", "The Compaction manager API", [&cm] (http_context& ctx, routes& r) {
         set_compaction_manager(ctx, r, cm);
     });

api/api.hh

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #pragma once
@@ -23,6 +23,31 @@
 
 namespace api {
 
+template<class T>
+std::vector<T> map_to_key_value(const std::map<sstring, sstring>& map) {
+    std::vector<T> res;
+    res.reserve(map.size());
+
+    for (const auto& [key, value] : map) {
+        res.push_back(T());
+        res.back().key = key;
+        res.back().value = value;
+    }
+    return res;
+}
+
+template<class T, class MAP>
+std::vector<T>& map_to_key_value(const MAP& map, std::vector<T>& res) {
+    res.reserve(res.size() + std::size(map));
+
+    for (const auto& [key, value] : map) {
+        T val;
+        val.key = fmt::to_string(key);
+        val.value = fmt::to_string(value);
+        res.push_back(val);
+    }
+    return res;
+}
 template <typename T, typename S = T>
 T map_sum(T&& dest, const S& src) {
     for (const auto& i : src) {
@@ -48,7 +73,7 @@ inline std::vector<sstring> split(const sstring& text, const char* separator) {
  *
  */
 template<class T, class F, class V>
-future<json::json_return_type>  sum_stats(sharded<T>& d, V F::*f) {
+future<json::json_return_type>  sum_stats(distributed<T>& d, V F::*f) {
     return d.map_reduce0([f](const T& p) {return p.get_stats().*f;}, 0,
             std::plus<V>()).then([](V val) {
         return make_ready_future<json::json_return_type>(val);
@@ -81,7 +106,7 @@ httpd::utils_json::rate_moving_average_and_histogram timer_to_json(const utils::
 }
 
 template<class T, class F>
-future<json::json_return_type>  sum_histogram_stats(sharded<T>& d, utils::timed_rate_moving_average_and_histogram F::*f) {
+future<json::json_return_type>  sum_histogram_stats(distributed<T>& d, utils::timed_rate_moving_average_and_histogram F::*f) {
 
     return d.map_reduce0([f](const T& p) {return (p.get_stats().*f).hist;}, utils::ihistogram(),
             std::plus<utils::ihistogram>()).then([](const utils::ihistogram& val) {
@@ -90,7 +115,7 @@ future<json::json_return_type>  sum_histogram_stats(sharded<T>& d, utils::timed_
 }
 
 template<class T, class F>
-future<json::json_return_type>  sum_timer_stats(sharded<T>& d, utils::timed_rate_moving_average_and_histogram F::*f) {
+future<json::json_return_type>  sum_timer_stats(distributed<T>& d, utils::timed_rate_moving_average_and_histogram F::*f) {
 
     return d.map_reduce0([f](const T& p) {return (p.get_stats().*f).rate();}, utils::rate_moving_average_and_histogram(),
             std::plus<utils::rate_moving_average_and_histogram>()).then([](const utils::rate_moving_average_and_histogram& val) {
@@ -99,7 +124,7 @@ future<json::json_return_type>  sum_timer_stats(sharded<T>& d, utils::timed_rate
 }
 
 template<class T, class F>
-future<json::json_return_type>  sum_timer_stats(sharded<T>& d, utils::timed_rate_moving_average_summary_and_histogram F::*f) {
+future<json::json_return_type>  sum_timer_stats(distributed<T>& d, utils::timed_rate_moving_average_summary_and_histogram F::*f) {
     return d.map_reduce0([f](const T& p) {return (p.get_stats().*f).rate();}, utils::rate_moving_average_and_histogram(),
             std::plus<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));

api/api_init.hh

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 #pragma once
 
@@ -18,9 +18,7 @@
 using request = http::request;
 using reply = http::reply;
 
-namespace compaction {
 class compaction_manager;
-}
 
 namespace service {
 
@@ -29,7 +27,6 @@ class storage_proxy;
 class storage_service;
 class raft_group0_client;
 class raft_group_registry;
-class client_routes_service;
 
 } // namespace service
 
@@ -59,6 +56,7 @@ class sstables_format_selector;
 namespace view {
 class view_builder;
 }
+class system_keyspace;
 }
 namespace netw { class messaging_service; }
 class repair_service;
@@ -85,9 +83,9 @@ struct http_context {
     sstring api_dir;
     sstring api_doc;
     httpd::http_server_control http_server;
-    sharded<replica::database>& db;
+    distributed<replica::database>& db;
 
-    http_context(sharded<replica::database>& _db)
+    http_context(distributed<replica::database>& _db)
             : db(_db)
     {
     }
@@ -98,10 +96,8 @@ future<> set_server_config(http_context& ctx, db::config& cfg);
 future<> unset_server_config(http_context& ctx);
 future<> set_server_snitch(http_context& ctx, sharded<locator::snitch_ptr>& snitch);
 future<> unset_server_snitch(http_context& ctx);
-future<> set_server_storage_service(http_context& ctx, sharded<service::storage_service>& ss, sharded<db::snapshot_ctl>&, service::raft_group0_client&);
+future<> set_server_storage_service(http_context& ctx, sharded<service::storage_service>& ss, service::raft_group0_client&);
 future<> unset_server_storage_service(http_context& ctx);
-future<> set_server_client_routes(http_context& ctx, sharded<service::client_routes_service>& cr);
-future<> unset_server_client_routes(http_context& ctx);
 future<> set_server_sstables_loader(http_context& ctx, sharded<sstables_loader>& sst_loader);
 future<> unset_server_sstables_loader(http_context& ctx);
 future<> set_server_view_builder(http_context& ctx, sharded<db::view::view_builder>& vb, sharded<gms::gossiper>& g);
@@ -120,7 +116,7 @@ future<> set_server_token_metadata(http_context& ctx, sharded<locator::shared_to
 future<> unset_server_token_metadata(http_context& ctx);
 future<> set_server_gossip(http_context& ctx, sharded<gms::gossiper>& g);
 future<> unset_server_gossip(http_context& ctx);
-future<> set_server_column_family(http_context& ctx, sharded<replica::database>& db);
+future<> set_server_column_family(http_context& ctx, sharded<db::system_keyspace>& sys_ks);
 future<> unset_server_column_family(http_context& ctx);
 future<> set_server_messaging_service(http_context& ctx, sharded<netw::messaging_service>& ms);
 future<> unset_server_messaging_service(http_context& ctx);
@@ -130,7 +126,9 @@ future<> set_server_stream_manager(http_context& ctx, sharded<streaming::stream_
 future<> unset_server_stream_manager(http_context& ctx);
 future<> set_hinted_handoff(http_context& ctx, sharded<service::storage_proxy>& p, sharded<gms::gossiper>& g);
 future<> unset_hinted_handoff(http_context& ctx);
-future<> set_server_compaction_manager(http_context& ctx, sharded<compaction::compaction_manager>& cm);
+future<> set_server_cache(http_context& ctx);
+future<> unset_server_cache(http_context& ctx);
+future<> set_server_compaction_manager(http_context& ctx, sharded<compaction_manager>& cm);
 future<> unset_server_compaction_manager(http_context& ctx);
 future<> set_server_done(http_context& ctx);
 future<> set_server_task_manager(http_context& ctx, sharded<tasks::task_manager>& tm, lw_shared_ptr<db::config> cfg, sharded<gms::gossiper>& gossiper);
@@ -143,6 +141,8 @@ future<> set_server_raft(http_context&, sharded<service::raft_group_registry>&);
 future<> unset_server_raft(http_context&);
 future<> set_load_meter(http_context& ctx, service::load_meter& lm);
 future<> unset_load_meter(http_context& ctx);
+future<> set_format_selector(http_context& ctx, db::sstables_format_selector& sel);
+future<> unset_format_selector(http_context& ctx);
 future<> set_server_cql_server_test(http_context& ctx, cql_transport::controller& ctl);
 future<> unset_server_cql_server_test(http_context& ctx);
 future<> set_server_service_levels(http_context& ctx, cql_transport::controller& ctl, sharded<cql3::query_processor>& qp);

api/authorization_cache.cc

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #include "api/api-doc/authorization_cache.json.hh"

api/authorization_cache.hh

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #pragma once

api/cache_service.cc

@@ -3,7 +3,7 @@
  */
 
 /*
- * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
 #include "cache_service.hh"
@@ -16,7 +16,7 @@ using namespace json;
 using namespace seastar::httpd;
 namespace cs = httpd::cache_service_json;
 
-void set_cache_service(http_context& ctx, sharded<replica::database>& db, routes& r) {
+void set_cache_service(http_context& ctx, routes& r) {
     cs::get_row_cache_save_period_in_seconds.set(r, [](std::unique_ptr<http::request> req) {
         // We never save the cache
         // Origin uses 0 for never
@@ -204,53 +204,53 @@ void set_cache_service(http_context& ctx, sharded<replica::database>& db, routes
         });
     });
 
-    cs::get_row_hits.set(r, [&db] (std::unique_ptr<http::request> req) {
-        return map_reduce_cf(db, uint64_t(0), [](const replica::column_family& cf) {
+    cs::get_row_hits.set(r, [&ctx] (std::unique_ptr<http::request> req) {
+        return map_reduce_cf(ctx, uint64_t(0), [](const replica::column_family& cf) {
             return cf.get_row_cache().stats().hits.count();
         }, std::plus<uint64_t>());
     });
 
-    cs::get_row_requests.set(r, [&db] (std::unique_ptr<http::request> req) {
-        return map_reduce_cf(db, uint64_t(0), [](const replica::column_family& cf) {
+    cs::get_row_requests.set(r, [&ctx] (std::unique_ptr<http::request> req) {
+        return map_reduce_cf(ctx, uint64_t(0), [](const replica::column_family& cf) {
             return cf.get_row_cache().stats().hits.count() + cf.get_row_cache().stats().misses.count();
         }, std::plus<uint64_t>());
     });
 
-    cs::get_row_hit_rate.set(r, [&db] (std::unique_ptr<http::request> req) {
-        return map_reduce_cf(db, ratio_holder(), [](const replica::column_family& cf) {
+    cs::get_row_hit_rate.set(r, [&ctx] (std::unique_ptr<http::request> req) {
+        return map_reduce_cf(ctx, ratio_holder(), [](const replica::column_family& cf) {
             return ratio_holder(cf.get_row_cache().stats().hits.count() + cf.get_row_cache().stats().misses.count(),
                     cf.get_row_cache().stats().hits.count());
         }, std::plus<ratio_holder>());
     });
 
-    cs::get_row_hits_moving_avrage.set(r, [&db] (std::unique_ptr<http::request> req) {
-        return map_reduce_cf_raw(db, utils::rate_moving_average(), [](const replica::column_family& cf) {
+    cs::get_row_hits_moving_avrage.set(r, [&ctx] (std::unique_ptr<http::request> req) {
+        return map_reduce_cf_raw(ctx, utils::rate_moving_average(), [](const replica::column_family& cf) {
             return cf.get_row_cache().stats().hits.rate();
         }, std::plus<utils::rate_moving_average>()).then([](const utils::rate_moving_average& m) {
             return make_ready_future<json::json_return_type>(meter_to_json(m));
         });
     });
 
-    cs::get_row_requests_moving_avrage.set(r, [&db] (std::unique_ptr<http::request> req) {
-        return map_reduce_cf_raw(db, utils::rate_moving_average(), [](const replica::column_family& cf) {
+    cs::get_row_requests_moving_avrage.set(r, [&ctx] (std::unique_ptr<http::request> req) {
+        return map_reduce_cf_raw(ctx, utils::rate_moving_average(), [](const replica::column_family& cf) {
             return cf.get_row_cache().stats().hits.rate() + cf.get_row_cache().stats().misses.rate();
         }, std::plus<utils::rate_moving_average>()).then([](const utils::rate_moving_average& m) {
             return make_ready_future<json::json_return_type>(meter_to_json(m));
         });
     });
 
-    cs::get_row_size.set(r, [&db] (std::unique_ptr<http::request> req) {
+    cs::get_row_size.set(r, [&ctx] (std::unique_ptr<http::request> req) {
         // In origin row size is the weighted size.
         // We currently do not support weights, so we use raw size in bytes instead
-        return db.map_reduce0([](replica::database& db) -> uint64_t {
+        return ctx.db.map_reduce0([](replica::database& db) -> uint64_t {
             return db.row_cache_tracker().region().occupancy().used_space();
         }, uint64_t(0), std::plus<uint64_t>()).then([](const int64_t& res) {
             return make_ready_future<json::json_return_type>(res);
         });
     });
 
-    cs::get_row_entries.set(r, [&db] (std::unique_ptr<http::request> req) {
-        return db.map_reduce0([](replica::database& db) -> uint64_t {
+    cs::get_row_entries.set(r, [&ctx] (std::unique_ptr<http::request> req) {
+        return ctx.db.map_reduce0([](replica::database& db) -> uint64_t {
             return db.row_cache_tracker().partitions();
         }, uint64_t(0), std::plus<uint64_t>()).then([](const int64_t& res) {
             return make_ready_future<json::json_return_type>(res);