| # Apache Thrift — AI Contribution Guidelines |
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| This file governs AI-assisted work on the Apache Thrift codebase. |
| It supplements but does **not** replace [`CONTRIBUTING.md`](CONTRIBUTING.md). |
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| ## 1. ASF Legal Compliance (Third-Party Code) |
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| Apache Thrift is an [Apache Software Foundation (ASF)](https://www.apache.org/) project released under the **Apache License 2.0**. |
| The AI **must** actively enforce and monitor ASF licensing policy: |
| |
| - **Proactively flag conflicts**: Before introducing any dependency, snippet, or code derived from an external source, verify its license is compatible with Apache 2.0. |
| Incompatible licenses include (non-exhaustive): GPL, AGPL, SSPL, BUSL, CC-BY-NC. |
| Compatible examples: MIT, BSD-2/3, Apache 2.0, ISC, MPL 2.0 (with caveats). |
| - **Category X / Category A**: Follow the [ASF Third-Party Licensing Policy](https://www.apache.org/legal/resolved.html). |
| Category A licenses may be included; Category X licenses must **never** be introduced. |
| - **Update `LICENSE` and `NOTICE`**: When adding third-party code or binaries that require attribution, add the appropriate notices to `LICENSE` and/or `NOTICE` following the [ASF guide on licenses and notices](https://www.apache.org/dev/licensing-howto.html). |
| If in doubt whether an entry is required, **add it and flag it in the PR description** for committer review. |
| - **Generative AI output**: The [ASF Generative Tooling Guidance](https://www.apache.org/legal/generative-tooling.html) applies. Be aware that AI-generated code may unintentionally reproduce copyrighted material. Flag any non-trivial generated blocks in commit messages or PR descriptions. |
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| --- |
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| ## 2. Issue Tracking |
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| | Type | Tracker | Notes | |
| |---|---|---| |
| | Significant changes | [Apache JIRA — THRIFT project](https://issues.apache.org/jira/browse/THRIFT) | Required for all non-trivial PRs | |
| | Minor / quick fixes | GitHub Issues | Typos, trivial compiler warnings, etc. | |
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| **JIRA integration with GitHub**: Including a JIRA ticket identifier at the start of a PR title automatically creates a link from JIRA to the PR. |
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| - PR title format: `THRIFT-9999: Short description of the change` |
| - Commit message format (required for code changes): |
| ``` |
| THRIFT-9999: Short description of the change |
| Client: cpp,py,java (comma-separated list of affected languages) |
| ``` |
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| Example: [THRIFT-5929](https://issues.apache.org/jira/projects/THRIFT/issues/THRIFT-5929) → [PR #3350](https://github.com/apache/thrift/pull/3350). |
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| --- |
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| ## 3. Pull Request Requirements |
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| Follow [`CONTRIBUTING.md`](CONTRIBUTING.md) in full. Key points: |
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| - One commit per issue (squash before submitting). |
| - All significant changes need a JIRA ticket. |
| - Provide tests for every submitted change. |
| - Verify coding standards: `make style`. |
| - Branch name convention: use the JIRA ticket ID, e.g. `THRIFT-9999`. |
| - PRs go from your fork branch → `apache:master`. |
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| --- |
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| ## 4. AI-Generated Contributions |
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| Per [`CONTRIBUTING.md § AI generated content`](CONTRIBUTING.md#ai-generated-content) and the [ASF Generative Tooling Guidance](https://www.apache.org/legal/generative-tooling.html): |
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| - **Always** label AI-assisted commits and PRs. Use one or both of: |
| ``` |
| Co-Authored-By: <AI tool name and version> |
| Generated-by: <AI tool name and version> |
| ``` |
| Example: |
| ``` |
| THRIFT-9999: Fix connection timeout handling in Go client |
| Client: go |
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| Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> |
| ``` |
| - Apply this label even when AI only generated a portion of the change. |
| - The human author remains responsible for reviewing, testing, and standing behind all submitted code. |
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| --- |
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| ## 5. Language-Specific Rules (`/lib`, `/test`, `/tutorial`) |
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| - This file remains valid in all cases and must be used in addition to any additional language-specific rules. |
| - If a target-language directory under `/lib/<lang>/` contains its own `CLAUDE.md` or `AGENTS.md`, those rules apply to all work in that language directory. |
| - Those language-specific rules extend **by implication** to the corresponding language code under `/test/` and `/tutorial/`. |
| - If `/test/` or `/tutorial/` themselves contain a `CLAUDE.md`/`AGENTS.md` for a given language, **combine** the rules: the file **closer to the code** (i.e., in the same directory) takes precedence on any conflict. |
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| --- |
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| ## 6. Quick Reference Checklist (before opening a PR) |
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| - [ ] License of any new dependency checked against [ASF Category A/X list](https://www.apache.org/legal/resolved.html) |
| - [ ] `LICENSE` and/or `NOTICE` updated if third-party attribution is required |
| - [ ] JIRA ticket exists (unless truly trivial) |
| - [ ] PR title starts with `THRIFT-NNNN:` (if ticket exists) |
| - [ ] Commit message includes affected `Client:` languages |
| - [ ] Single squashed commit |
| - [ ] Tests added or updated |
| - [ ] `make style` passes |
| - [ ] AI authorship labelled with `Co-Authored-By:` / `Generated-by:` where applicable |