feat: support robust inline PR review comments#39
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Introduce 'use_inline_comments' action input to toggle between a single summary comment and a full GitHub PR Review with inline file comments. - Update StructuredReview schema to include 'action' (APPROVE/REQUEST_CHANGES/COMMENT). - Implement 'post-structured-review' in the GitHub utility to parse JSON findings and post them as atomic review comments. - Add deduplication logic to avoid repeating the same comment at the same location. - Enhance extraction prompt to guide the LLM on sentiment-to-action mapping.
- Set 'submit_review_action: true' in the Cassandra Review workflow to allow actual APPROVE/REQUEST_CHANGES submissions. - Verified 'allowReviewAction' logic with TestPostStructuredReview_OverrideAction in cmd/github/main_test.go. - Verified that the GITHUB_TOKEN needs 'pull-requests: write' permission for these actions (already present in the workflow).
Update postStructuredReview to post the non-specific review as its own standalone comment, while using Approval.Rationale exclusively as the body of the GitHub Pull Request Review. This aligns with the original requirement for a 'main (non-specific) comment' and an 'atomic review'.
- Use a 'comment-' prefix for inline review comment tags to fix deduplication. - Update postCommentText to only update comments authored by the bot. - Update getMetadata to correctly identify 'self' comments for both main and inline types. - Ensure unit tests cover the new tag distinguishing logic and author checks.
![github-actions[bot]](https://avatars.githubusercontent.com/in/15368?s=60&v=4){kind=small}
| } | ||
| selfLogin := self.GetLogin() | ||
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| // Find existing comment |
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The GET /user endpoint (client.Users.Get(ctx, "")) fails with a 403 Resource not accessible by integration when called using the standard GitHub Actions GITHUB_TOKEN (which acts as an installation access token). Because this error is returned directly, it will crash the entire action for users relying on default permissions. You must handle this error gracefully (e.g., logging a warning and falling back to relying solely on the unique tag for identification) or remove the user lookup entirely.
| var metadata core.PRMetadata | ||
| if metadataFile != "" { | ||
| metadataBytes, err := os.ReadFile(metadataFile) | ||
| if err == nil { | ||
| if err := json.Unmarshal(metadataBytes, &metadata); err != nil { |
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If metadataFile is provided but os.ReadFile fails, the error is silently ignored because of the if err == nil branch. If this file fails to read (due to missing paths or permissions), the process continues with an empty metadata object, which will silently break the comment deduplication logic. We should explicitly check if err != nil and log a warning to make it auditable.
- Gracefully handle 403 errors when calling /user with default GITHUB_TOKEN. - Log warning and fallback to tag-only identification for comment updates. - Explicitly log warning if metadata file read fails. - Add unit test for GetUser error scenario.
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Regarding the structured review posting logic: if needsRetry == false, the unconditional CreateReview is called and fails, causing errRetry != nil to be true. It then enters the block, strips comments, and retries. Making an extra HTTP request that is guaranteed to fail is inefficient and presents a clear logic flaw. |
- Add specific fallback for 'GitHub Actions is not permitted to approve pull requests' error. - Refine multi-level 422 fallback logic to handle both permissions and line hallucinations. - Ensure postCommentText only updates comments authored by the current bot user. - Mock missing endpoints in tests to avoid 405 errors and verify new resilience logic.
- Implement location-based inline comment syncing (Update existing vs Create new). - Distinguish comment types with unique tag prefixes (main vs inline). - Automatically cleanup redundant architecture comments in postCommentText. - Defer review dismissal until after successful submission of the new review. - Add 'outdated' detection for inline comments to prevent stale updates. - Hardened unit tests for all new state management and syncing logic.
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[Observation]: The PR description states "Validates review actions and author identity before performing updates." However, author identity verification is missing from getMetadata, dismissPreviousReviews, and postStructuredReview. The implementation does not fully align with this claim. This is a fantastic and highly resilient implementation overall! The multi-stage fallback logic for 422 errors and permission downgrades is exceptionally solid, and the updated parsing logic is well-tested. Once the sequence of operations and author validations are corrected, this will be ready to merge. |
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The PR provides an excellent and hardened implementation of inline comments with robust fallback mechanics. Previous PR comments are well addressed and edge-cases are explicitly tested. Only minor observations regarding fallback logic logging and formatting were noted.
- Dismiss previous reviews BEFORE posting new ones. - Support optional deletion of old inline comments via 'delete_old_comments' flag. - Simplify and fix the 422 fallback logic for both permissions and hallucinations. - Ensure only one persistent architecture comment exists by cleaning duplicates. - Added comprehensive unit tests for deletion and dismissal logic.
- Use environment variables for all shell script arguments in action.yml to prevent command injection. - Optimize 422 fallback in cmd/github/main.go to skip redundant retries when no request changes are made. - Verified with unit tests and formatting.
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The reviewer noted that the use of DismissReview instead of DeleteReview is appropriate and accepted behavior for managing old AI reviews without cluttering the timeline.
Detailed Inline Feedback (Fallback)
- cmd/github/main.go (43): postCommentText updates the same issue comment, so it only takes up one slot in the timeline. Wait, if the AI leaves a review with reviewRationale, that text will be posted 5 times, cluttering the timeline. However, PR reviews can be deleted. Can they? The GitHub API has DeletePendingReview, but not for submitted reviews. Actually, you can delete a Pull Request Review? Let's check. Is there a client.PullRequests.DeleteReview()? Yes, DELETE /repos/{owner}/{repo}/pulls/{pull_number}/reviews/{review_id}. Wait, that only deletes pending reviews. Submitted reviews cannot be deleted via the API. Wait, I am an AI, I should be skeptical of my internal knowledge. Let's use read_file to check cmd/github/main.go or mock library to see if DeleteReview is used. Wait, the author uses DismissReview, not DeleteReview. This is the standard way to handle old reviews. So it's fine. It's an accepted behavior.
- Document 'post-structured-review' action and improved 'post-comment' logic. - Add 'Review Resilience & State Management' section to DESIGN.md. - Highlight Inline PR Reviews in README.md features. - Update GitHub Action inputs table with new configuration flags. - Updated JSON schema documentation.
- Introduce wrapTag helper to safely wrap and sanitize tag slugs. - Remove global tag wrapping in main() to prevent brittle string replacements. - Ensure consistent use of type-specific tag prefixes. - Added sanitization to prevent HTML comment breakout. - Updated all unit tests to verify new tagging and sanitization logic.
…ion errors - Implement multi-stage 422 fallback logic. - Try downgrading to 'COMMENT' while keeping inline comments if APPROVE is not permitted. - Only strip inline comments if the 422 error persists (likely due to line hallucinations). - Updated unit tests to verify the prioritized preservation of inline feedback.
Ensure that pagination logic in postCommentText is verified alongside the new cleanup redundant comments logic.
Add core/review_types_test.go to verify: - Empty strings and file-level comments. - Single line parsing. - Valid range parsing (10-20). - Inverted range parsing (swapping 20-10 to 10-20). - Whitespace handling within range strings. - Malformed inputs and extra hyphens.
- Filter fallback inline feedback to skip already-appended file-level comments. - Update TestPostStructuredReview_422Fallback to verify no duplicate feedback. - Ensured all tests correctly verify the multi-stage fallback logic.
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The implementation needs correction in the sequence of operations (posting the new review before dismissing previous ones) and requires author identity verification to prevent deleting or dismissing human users' comments.
Detailed Inline Feedback (Fallback)
- cmd/github/main.go (368-384): The dismissPreviousReviews and deleteOldComments operations are executed before attempting client.PullRequests.CreateReview. If the API fails to create the new review (e.g., due to a network error or an unhandled 422), all previous review state is permanently lost. This violates the principle of resilience. We must post the new review first. If it succeeds, we can then pass its ID to dismissPreviousReviews as the skipReviewID, and safely perform the comment cleanup. Be mindful that when you move this logic to the end of the function, you must ensure the early returns in the 422 fallback block (e.g., line 459) do not accidentally bypass the cleanup.
- cmd/github/main.go (277-315): IsSelf is determined solely by checking for the presence of the tag. If a human user replies to the bot and quotes its inline comment, their comment will be erroneously marked IsSelf: true. Because postStructuredReview unconditionally deletes IsSelf inline comments, the human user's comment will be silently deleted. We must fetch the bot's selfLogin (gracefully handling the 403 fallback, just like in postCommentText) and verify c.GetUser().GetLogin() == selfLogin before marking a comment as IsSelf.
- cmd/github/main.go (501-526): As noted in the previous PR feedback, dismissPreviousReviews still dismisses any review containing the tag without checking the author. A human user manually using the tag or quoting the bot's review will have their review inappropriately dismissed, causing noise or permission errors. We should pass the fetched selfLogin to this function and verify the review author before dismissing.
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Implement support for posting inline comments to GitHub PRs based on structured AI review output.
This PR provides a hardened implementation of inline reviews:
use_inline_commentsandsubmit_review_actionflags inaction.yml.Fixes #26