// updateReviewDiffs updates the status of a differential review so that it matches the state of the repo.
//
// This consists of making sure the latest commit pushed to the review ref has a corresponding
// diff in the differential review.
func (arc Arcanist) updateReviewDiffs(repo repository.Repo, review differentialReview, headCommit string, req request.Request, comments map[string]comment.Comment) {
if review.isClosed() {
return
}
headRevision := repository.Revision(headCommit)
mergeBase, err := repo.GetMergeBase(repository.Revision(req.TargetRef), headRevision)
if err != nil {
// This can happen if the target ref has been deleted while we were performing the updates.
return
}
for _, hashPair := range review.Hashes {
if len(hashPair) == 2 && hashPair[0] == commitHashType && hashPair[1] == headCommit {
// The review already has the hash of the HEAD commit, so we have nothing to do beyond mirroring comments
// and build status if applicable
arc.mirrorCommentsIntoReview(repo, review, comments)
return
}
}
diff, err := arc.createDifferentialDiff(repo, mergeBase, headRevision, req, review.Diffs)
if err != nil {
log.Fatal(err)
}
if diff == nil {
// This means that phabricator silently refused to create the diff. Just move on.
return
}
updateRequest := differentialUpdateRevisionRequest{ID: review.ID, DiffID: strconv.Itoa(diff.ID)}
var updateResponse differentialUpdateRevisionResponse
runArcCommandOrDie("differential.updaterevision", updateRequest, &updateResponse)
if updateResponse.Error != "" {
log.Fatal(updateResponse.ErrorMessage)
}
}
// EnsureRequestExists runs the "arcanist" command-line tool to create a Differential diff for the given request, if one does not already exist.
func (arc Arcanist) EnsureRequestExists(repo repository.Repo, revision repository.Revision, req request.Request, comments map[string]comment.Comment) {
// If this revision has been previously closed shortcut all processing
if closedRevisionsMap[revision] {
return
}
mergeBase, err := repo.GetMergeBase(repository.Revision(req.TargetRef), revision)
if err != nil {
// There are lots of reasons that we might not be able to compute a merge base,
// (e.g. the revision already being merged in, or being dropped and garbage collected),
// but they all indicate that the review request is no longer valid.
log.Printf("Ignoring review request '%v', because we could not compute a merge base", req)
return
}
existingReviews := arc.listDifferentialReviewsOrDie(req.ReviewRef, revision)
if mergeBase == revision {
// The change has already been merged in, so we should simply close any open reviews.
for _, review := range existingReviews {
if !review.isClosed() {
review.close()
}
}
closedRevisionsMap[revision] = true
return
}
headDetails, err := repo.GetDetails(repository.Revision(req.ReviewRef))
if err != nil {
// The given review ref has been deleted (or never existed), but the change wasn't merged.
// TODO(ojarjur): We should mark the existing reviews as abandoned.
log.Printf("Ignoring review because the review ref '%s' does not exist", req.ReviewRef)
return
}
if len(existingReviews) > 0 {
// The change is still pending, but we already have existing reviews, so we should just update those.
for _, review := range existingReviews {
arc.updateReviewDiffs(repo, review, headDetails.Commit, req, comments)
}
return
}
diff, err := arc.createDifferentialDiff(repo, mergeBase, revision, req, []string{})
if err != nil {
log.Fatal(err)
}
if diff == nil {
// The revision is already merged in, ignore it.
return
}
rev, err := arc.createDifferentialRevision(repo, revision, diff.ID, req)
if err != nil {
log.Fatal(err)
}
log.Printf("Created diff %v and revision %v for the review of %s", diff, rev, revision)
// If the review already contains multiple commits by the time we mirror it, then
// we need to ensure that at least the first and last ones are added.
existingReviews = arc.listDifferentialReviewsOrDie(req.ReviewRef, revision)
for _, review := range existingReviews {
arc.updateReviewDiffs(repo, review, headDetails.Commit, req, comments)
}
}