Send the accepted note position first when adding GitLab review comments - #196
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beyildirim wants to merge 2 commits into
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Send the accepted note position first when adding GitLab review comments#196beyildirim wants to merge 2 commits into
beyildirim wants to merge 2 commits into
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Every inline review comment on GitLab costs two API calls, and the first one can never succeed. addPullRequestReviewComment builds the note position with OldLine and OldPath always set, sends it, and only after a failure retries without them. The rules the function documents itself say GitLab rejects a position carrying 'old_path' or 'old_line' both for a file added in the merge request and for an existing file that changed in the diff, and accepts them only for a file that did not change. A comment cannot reach the request unless its file was matched against mergeRequestChanges a few lines above, so the file is always one that changed, and the first attempt is always the rejected form. The order is therefore inverted: the first attempt omits old_path and old_line, and the retry adds them back, so the previous request survives as a fallback and no case that used to work stops working. The first debug line no longer prints old values it does not send. This is not only a wasted round trip. On a self-managed GitLab instance the rejected attempt took about 13 seconds to come back, so a scan posting a handful of inline comments spent over a minute waiting for answers that were known in advance. TestGitLabClient_AddPullRequestReviewCommentSendsAcceptedPositionFirst records every discussion request, answers 404 to any that carries old_path or old_line - the behaviour the existing test handler already models - and asserts that one request is sent and that it carries neither. Without the change it fails on the request count, since the accepted position only arrives on the retry. go test ./vcsclient/... passes, go vet is clean and gofmt reports no diffs.
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📝 WalkthroughWalkthroughThe GitLab client now sends merge request discussion positions without ChangesGitLab review comment flow
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: 🟡 Moderate · up to The preferred GitLab comment position is sent correctly, but fallback handling can duplicate comments or submit invalid old-side coordinates. These issues should be corrected before merge. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches 💡 1🛠️ Fix failing CI checks 💡
🧪 Generate unit tests (beta)
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Inline comments:
In `@vcsclient/gitlab.go`:
- Line 470: Update the error-handling branch in createMergeRequestDiscussion to
retry only for a *gitlab.ErrorResponse whose response identifies a
position-field rejection; return all other errors immediately, including
transport errors, to avoid duplicating the non-idempotent discussion-creation
POST.
- Line 471: Update the retry position construction around diffPosition.OldLine
to use comment.OriginalStartLine when old-side data exists, rather than newLine
or comment.NewStartLine. When diff.NewFile is true, omit both OldLine and
OldPath because oldPath is unavailable, while preserving the existing new-file
and non-new-file position behavior.
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ℹ️ Review info
⚙️ Run configuration
Configuration used: Organization UI
Review profile: CHILL
Plan: Team
Run ID: 146d78eb-0f74-420f-910c-a83aa14a160a
📒 Files selected for processing (2)
vcsclient/gitlab.govcsclient/gitlab_test.go
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Review feedback on jfrog#196: the retry anchors the old side of the position, so old_line must be the comment's OriginalStartLine. It carried newLine, the new-side coordinate, which points at a different line whenever the file shifted. The retry is also skipped for a file added in the merge request. Such a file has no old side - oldPath stays empty because diff.NewFile is true - so the request could only repeat the first attempt with an empty old_path, which GitLab rejects. The first attempt is the only valid form there, and its error now stands. TestGitLabClient_AddPullRequestReviewCommentRetriesWithOriginalLine drives the fallback by rejecting the position without old data, and asserts the retry carries old_path VERSION and old_line 1 next to new_line 2. With the previous coordinate it fails on "old_line":2. Both tests now share createRecordingDiscussionGitLabHandler. go test ./vcsclient/... passes, go vet is clean, gofmt reports no diffs.
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What
addPullRequestReviewCommentnow sends the note position that GitLab accepts on the first request instead of on the retry.Why
The position is built with
OldLineandOldPathalways set, sent, and only retried without them after the call fails:The rules the function documents immediately above that call say GitLab rejects a position carrying
old_pathorold_lineand accepts them only for a file that did not change.
A comment cannot reach the request unless its file was matched against
mergeRequestChangesa few lines earlier — otherwise the function returnscould not find changes to %s in the current merge request— so the file has always changed, and the first attempt is always the rejected form. Every inline review comment therefore costs two API calls and the first one can never succeed.It is not only a wasted round trip. On a self-managed GitLab instance the rejected attempt took about 13 seconds to come back, so a Frogbot scan posting a handful of inline comments spent over a minute waiting for answers that were known in advance. Every finding shows the same pair in the log:
(13s apart, and only the second one lands.)
Change
old_pathandold_line; the retry adds them back. The previously-sent request survives as the fallback, so no case that worked before stops working.Tests
TestGitLabClient_AddPullRequestReviewCommentSendsAcceptedPositionFirstrecords every discussion request, answers404to any request carryingold_pathorold_line— the behaviour the existing test handler already models — and asserts that exactly one request is sent and that it carries neither. Reverting the source change fails it on the request count, because the accepted position then only arrives on the retry.go test ./vcsclient/...passes,go vet ./vcsclient/is clean,gofmtreports no diffs.go fmt ./...for formatting the code before submitting the pull request.Summary by CodeRabbit
Bug Fixes
Tests