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package repository
import (
"context"
"errors"
"fmt"
"io/fs"
"os"
"path/filepath"
"github.com/grpc-ecosystem/go-grpc-middleware/logging/logrus/ctxlogrus"
log "github.com/sirupsen/logrus"
"gitlab.com/gitlab-org/gitaly/v16/internal/git"
"gitlab.com/gitlab-org/gitaly/v16/internal/git/catfile"
"gitlab.com/gitlab-org/gitaly/v16/internal/git/housekeeping"
"gitlab.com/gitlab-org/gitaly/v16/internal/git/localrepo"
"gitlab.com/gitlab-org/gitaly/v16/internal/git/stats"
"gitlab.com/gitlab-org/gitaly/v16/internal/gitaly/service"
"gitlab.com/gitlab-org/gitaly/v16/internal/structerr"
"gitlab.com/gitlab-org/gitaly/v16/proto/go/gitalypb"
)
func (s *server) GarbageCollect(ctx context.Context, in *gitalypb.GarbageCollectRequest) (*gitalypb.GarbageCollectResponse, error) {
ctxlogger := ctxlogrus.Extract(ctx)
ctxlogger.WithFields(log.Fields{
"WriteBitmaps": in.GetCreateBitmap(),
}).Debug("GarbageCollect")
repository := in.GetRepository()
if err := service.ValidateRepository(repository); err != nil {
return nil, structerr.NewInvalidArgument("%w", err)
}
repo := s.localrepo(repository)
if err := housekeeping.CleanupWorktrees(ctx, repo); err != nil {
return nil, err
}
if err := s.cleanupKeepArounds(ctx, repo); err != nil {
return nil, err
}
// Perform housekeeping to cleanup stale lockfiles that may block GC
if err := s.housekeepingManager.CleanStaleData(ctx, repo); err != nil {
ctxlogger.WithError(err).Warn("Pre gc housekeeping failed")
}
if err := s.gc(ctx, in); err != nil {
return nil, err
}
if err := housekeeping.WriteCommitGraph(ctx, repo, housekeeping.WriteCommitGraphConfig{
ReplaceChain: true,
}); err != nil {
return nil, err
}
stats.LogRepositoryInfo(ctx, repo)
return &gitalypb.GarbageCollectResponse{}, nil
}
func (s *server) gc(ctx context.Context, in *gitalypb.GarbageCollectRequest) error {
config := append(housekeeping.GetRepackGitConfig(ctx, in.GetRepository(), in.CreateBitmap), git.ConfigPair{Key: "gc.writeCommitGraph", Value: "false"})
var flags []git.Option
if in.Prune {
flags = append(flags, git.Flag{Name: "--prune=30.minutes.ago"})
}
cmd, err := s.gitCmdFactory.New(ctx, in.GetRepository(),
git.Command{Name: "gc", Flags: flags},
git.WithConfig(config...),
)
if err != nil {
if git.IsInvalidArgErr(err) {
return structerr.NewInvalidArgument("gitCommand: %w", err)
}
return structerr.NewInternal("gitCommand: %w", err)
}
if err := cmd.Wait(); err != nil {
return structerr.NewInternal("cmd wait: %w", err)
}
return nil
}
func (s *server) cleanupKeepArounds(ctx context.Context, repo *localrepo.Repo) error {
repoPath, err := repo.Path()
if err != nil {
return nil
}
objectInfoReader, cancel, err := s.catfileCache.ObjectInfoReader(ctx, repo)
if err != nil {
return nil
}
defer cancel()
keepAroundsPrefix := "refs/keep-around"
keepAroundsPath := filepath.Join(repoPath, keepAroundsPrefix)
refEntries, err := os.ReadDir(keepAroundsPath)
if os.IsNotExist(err) {
return nil
}
if err != nil {
return err
}
for _, entry := range refEntries {
if entry.IsDir() {
continue
}
info, err := entry.Info()
if err != nil {
// Even though the reference has disappeared we know its name
// and thus the object hash it is supposed to point to. So
// while we technically could try to fix it, we don't as
// we seem to be racing with a concurrent process.
if errors.Is(err, fs.ErrNotExist) {
continue
}
return fmt.Errorf("statting keep-around ref: %w", err)
}
refName := fmt.Sprintf("%s/%s", keepAroundsPrefix, info.Name())
path := filepath.Join(repoPath, keepAroundsPrefix, info.Name())
if err = checkRef(ctx, objectInfoReader, refName, info); err == nil {
continue
}
if err := s.fixRef(ctx, repo, objectInfoReader, path, refName, info.Name()); err != nil {
return err
}
}
return nil
}
func checkRef(ctx context.Context, objectInfoReader catfile.ObjectInfoReader, refName string, info os.FileInfo) error {
if info.Size() == 0 {
return errors.New("checkRef: Ref file is empty")
}
_, err := objectInfoReader.Info(ctx, git.Revision(refName))
return err
}
func (s *server) fixRef(ctx context.Context, repo *localrepo.Repo, objectInfoReader catfile.ObjectInfoReader, refPath string, name string, sha string) error {
// So the ref is broken, let's get rid of it
if err := os.RemoveAll(refPath); err != nil {
return err
}
// If the sha is not in the the repository, we can't fix it
if _, err := objectInfoReader.Info(ctx, git.Revision(sha)); err != nil {
return nil
}
// The name is a valid sha, recreate the ref
return repo.ExecAndWait(ctx, git.Command{
Name: "update-ref",
Args: []string{name, sha},
}, git.WithRefTxHook(repo))
}
|
