dcapwell commented on code in PR #4734: URL: https://github.com/apache/cassandra/pull/4734#discussion_r3074391450
########## AGENTS.md: ########## @@ -0,0 +1,79 @@ +# Agent Instructions for Apache Cassandra + +> These instructions apply to all AI-assisted contributions to `apache/cassandra`. + +## Apache Cassandra +Apache Cassandra is a NoSQL distributed database. This is the official Git repository + +## Environment + +- Java 11 (default) or 17. +- Python 3 for `cqlsh` and dtests. +- Apache Ant >= 1.10 for all builds. Do NOT attempt to use Maven, Gradle, or any other build tool. Cassandra uses Ant exclusively. +- Do NOT attempt to install dependencies, you do not have Internet access + +## Build + +```bash +ant build # compile all classes (includes Accord submodule) +ant jar # build the main JAR +ant clean # remove locally created artifacts +ant realclean # remove entire build directory and downloaded artifacts +``` + +Do NOT run `ant build` if you only need to verify a small change compiles. + +## Testing + +- Do NOT run the entire test suite(`ant test`). Run only the specific test(s) relevant to your change. + + ```bash + # Run a single unit test class + ant testsome -Dtest.name=org.apache.cassandra.service.StorageServiceServerTest -Dtest.methods=testGetAllRangesEmpty + ``` + +- When fixing a bug, first create a regression test that reproduces the failure, then implement the fix and verify. +- Provide test(s) coverage for all new or modified code. + +## Linting and Code Checks + +```bash +ant check # runs checkstyle, RAT license check, and builds +ant checkstyle # checkstyle only +``` + +## Code Style +Cassandra enforces style via Checkstyle (`ant checkstyle`). Key rules are included in `checkstyle.xml` file. +General style: +- 4-space indentation, no tabs. +- Braces on a new line below control statements (Allman style). +- Brace-less style for single-line control statements. +- Match existing code style in the file you are editing. +- All new files must include the Apache License 2.0 header. +- Concise English documentation is required for complex classes and methods; trivial ones may not require them. + +## Git Workflow +- Do NOT commit unless explicitly asked. +- Commit messages should reference the JIRA issue. Disclose that AI assistance was used in the PR description. + + ``` + CASSANDRA-XXXXX: Brief description of the change + Author: Your Name <[email protected]> + + Co-authored-by: GitHub Copilot + Co-authored-by: Claude + Co-authored-by: gemini-code-assist + ``` + +- Do NOT modify submodule references without understanding the implications. Submodule changes must be committed and pushed before the parent Cassandra commit. + +## Boundaries + +- 🚫 Never modify generated files in `src/gen-java/` — they are built from `src/antlr/` grammars. +- 🚫 Never modify files in `lib/` — these are managed dependencies. +- 🚫 Never commit secrets, credentials, or API keys. +- 🚫 Never run the full test suite (`ant test`) — it takes hours. Run targeted tests only. +- 🚫 Never bypass Checkstyle violations without a suppression comment explaining why. +- 🚫 Never create summary or documentation files unless explicitly asked. +- ⚠️ Ask before modifying the CQL grammar (`src/antlr/Cql.g`) — changes cascade widely. +- ⚠️ Ask before modifying `modules/accord/` — it is a separate repository. Review Comment: this is a git thing, this tells the harness to hack when the proper solution is to update accord. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
