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Refactor and tidy-up the merge/update branch code (#22568)

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The merge and update branch code was previously a little tangled and had
some very long functions. The functions were not very clear in their
reasoning and there were deficiencies in their logging and at least one
bug in the handling of LFS for update by rebase.

This PR substantially refactors this code and splits things out to into
separate functions. It also attempts to tidy up the calls by wrapping
things in "context"s. There are also attempts to improve logging when
there are errors.

Signed-off-by: Andrew Thornton <art27@cantab.net>

---------

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: delvh <dev.lh@web.de>
This commit is contained in:
zeripath 2023-03-07 20:07:35 +00:00 • committed by GitHub
parent a2f44463f0
commit 8598356df1
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GPG key ID: 4AEE18F83AFDEB23
12 changed files with 760 additions and 610 deletions
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17
services/pull/patch.go
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@ -22,7 +22,6 @@ import (
"code.gitea.io/gitea/modules/graceful"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/process"
repo_module "code.gitea.io/gitea/modules/repository"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/util"
@ -64,25 +63,21 @@ func TestPatch(pr *issues_model.PullRequest) error {
defer finished()
// Clone base repo.
tmpBasePath, err := createTemporaryRepo(ctx, pr)
prCtx, cancel, err := createTemporaryRepoForPR(ctx, pr)
if err != nil {
log.Error("CreateTemporaryPath: %v", err)
log.Error("createTemporaryRepoForPR %-v: %v", pr, err)
return err
}
defer func() {
if err := repo_module.RemoveTemporaryPath(tmpBasePath); err != nil {
log.Error("Merge: RemoveTemporaryPath: %s", err)
}
}()
defer cancel()
gitRepo, err := git.OpenRepository(ctx, tmpBasePath)
gitRepo, err := git.OpenRepository(ctx, prCtx.tmpBasePath)
if err != nil {
return fmt.Errorf("OpenRepository: %w", err)
}
defer gitRepo.Close()
// 1. update merge base
pr.MergeBase, _, err = git.NewCommand(ctx, "merge-base", "--", "base", "tracking").RunStdString(&git.RunOpts{Dir: tmpBasePath})
pr.MergeBase, _, err = git.NewCommand(ctx, "merge-base", "--", "base", "tracking").RunStdString(&git.RunOpts{Dir: prCtx.tmpBasePath})
if err != nil {
var err2 error
pr.MergeBase, err2 = gitRepo.GetRefCommitID(git.BranchPrefix + "base")
@ -101,7 +96,7 @@ func TestPatch(pr *issues_model.PullRequest) error {
}
// 2. Check for conflicts
if conflicts, err := checkConflicts(ctx, pr, gitRepo, tmpBasePath); err != nil || conflicts || pr.Status == issues_model.PullRequestStatusEmpty {
if conflicts, err := checkConflicts(ctx, pr, gitRepo, prCtx.tmpBasePath); err != nil || conflicts || pr.Status == issues_model.PullRequestStatusEmpty {
return err
}