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PRs: Move to use a temporary repo for pushing new prs #10009

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Merged
merged 3 commits into from
Jan 28, 2020
Merged

PRs: Move to use a temporary repo for pushing new prs #10009

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6ed1418
Move to use a temporary repo for pushing new prs
zeripath Jan 26, 2020
f03b47c
Update services/pull/pull.go
zeripath Jan 27, 2020
6793fe8
Merge branch 'master' into prevent-intermittent-pr-creation-push-failure
zeripath Jan 28, 2020
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44 changes: 30 additions & 14 deletions services/pull/pull.go
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Original file line number Diff line number Diff line change
Expand Up @@ -311,23 +311,39 @@ func checkIfPRContentChanged(pr *models.PullRequest, oldCommitID, newCommitID st
func PushToBaseRepo(pr *models.PullRequest) (err error) {
log.Trace("PushToBaseRepo[%d]: pushing commits to base repo '%s'", pr.BaseRepoID, pr.GetGitRefName())

// Clone base repo.
tmpBasePath, err := models.CreateTemporaryPath("pull")
if err != nil {
log.Error("CreateTemporaryPath: %v", err)
return err
}
defer func() {
err := models.RemoveTemporaryPath(tmpBasePath)
if err != nil {
log.Error("Error whilst removing temporary path: %s Error: %v", tmpBasePath, err)
}
}()

headRepoPath := pr.HeadRepo.RepoPath()
headGitRepo, err := git.OpenRepository(headRepoPath)

if err := git.Clone(headRepoPath, tmpBasePath, git.CloneRepoOptions{
Bare: true,
Shared: true,
Branch: pr.HeadBranch,
Quiet: true,
}); err != nil {
log.Error("git clone tmpBasePath: %v", err)
return err
}
gitRepo, err := git.OpenRepository(tmpBasePath)
if err != nil {
return fmt.Errorf("OpenRepository: %v", err)
}
defer headGitRepo.Close()

tmpRemoteName := fmt.Sprintf("tmp-pull-%d", pr.ID)
if err = headGitRepo.AddRemote(tmpRemoteName, pr.BaseRepo.RepoPath(), false); err != nil {
return fmt.Errorf("headGitRepo.AddRemote: %v", err)
if err := gitRepo.AddRemote("base", pr.BaseRepo.RepoPath(), false); err != nil {
return fmt.Errorf("tmpGitRepo.AddRemote: %v", err)
}
// Make sure to remove the remote even if the push fails
defer func() {
if err := headGitRepo.RemoveRemote(tmpRemoteName); err != nil {
log.Error("PushToBaseRepo: RemoveRemote: %s", err)
}
}()
defer gitRepo.Close()

headFile := pr.GetGitRefName()

Expand All @@ -343,14 +359,14 @@ func PushToBaseRepo(pr *models.PullRequest) (err error) {
return fmt.Errorf("unable to load poster %d for pr %d: %v", pr.Issue.PosterID, pr.ID, err)
}

if err = git.Push(headRepoPath, git.PushOptions{
Remote: tmpRemoteName,
if err = git.Push(tmpBasePath, git.PushOptions{
Remote: "base",
Branch: fmt.Sprintf("%s:%s", pr.HeadBranch, headFile),
Force: true,
// Use InternalPushingEnvironment here because we know that pre-receive and post-receive do not run on a refs/pulls/...
Env: models.InternalPushingEnvironment(pr.Issue.Poster, pr.BaseRepo),
}); err != nil {
return fmt.Errorf("Push: %v", err)
return fmt.Errorf("Push: %s:%s %s:%s %v", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), headFile, err)
}

return nil
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