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package repository
import (
"errors"
"fmt"
"io/ioutil"
"os"
"path/filepath"
grpc_logrus "github.com/grpc-ecosystem/go-grpc-middleware/logging/logrus"
log "github.com/sirupsen/logrus"
"gitlab.com/gitlab-org/gitaly-proto/go/gitalypb"
"gitlab.com/gitlab-org/gitaly/internal/git"
"gitlab.com/gitlab-org/gitaly/internal/git/catfile"
"gitlab.com/gitlab-org/gitaly/internal/helper"
"gitlab.com/gitlab-org/gitaly/internal/helper/housekeeping"
"golang.org/x/net/context"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
func (server) GarbageCollect(ctx context.Context, in *gitalypb.GarbageCollectRequest) (*gitalypb.GarbageCollectResponse, error) {
ctxlogger := grpc_logrus.Extract(ctx)
ctxlogger.WithFields(log.Fields{
"WriteBitmaps": in.GetCreateBitmap(),
}).Debug("GarbageCollect")
repoPath, err := helper.GetRepoPath(in.GetRepository())
if err != nil {
return nil, err
}
if err := cleanupRepo(repoPath); err != nil {
return nil, err
}
if err := cleanupKeepArounds(ctx, in.GetRepository()); err != nil {
return nil, err
}
args := []string{"-c"}
if in.GetCreateBitmap() {
args = append(args, "repack.writeBitmaps=true")
} else {
args = append(args, "repack.writeBitmaps=false")
}
args = append(args, "gc")
cmd, err := git.Command(ctx, in.GetRepository(), args...)
if err != nil {
if _, ok := status.FromError(err); ok {
return nil, err
}
return nil, status.Errorf(codes.Internal, "GarbageCollect: gitCommand: %v", err)
}
if err := cmd.Wait(); err != nil {
return nil, status.Errorf(codes.Internal, "GarbageCollect: cmd wait: %v", err)
}
// Perform housekeeping post GC
err = housekeeping.Perform(ctx, repoPath)
if err != nil {
ctxlogger.WithError(err).Warn("Post gc housekeeping failed")
}
return &gitalypb.GarbageCollectResponse{}, nil
}
func cleanupKeepArounds(ctx context.Context, repo *gitalypb.Repository) error {
repoPath, err := helper.GetRepoPath(repo)
if err != nil {
return nil
}
batch, err := catfile.New(ctx, repo)
if err != nil {
return nil
}
keepAroundsPrefix := "refs/keep-around"
keepAroundsPath := filepath.Join(repoPath, keepAroundsPrefix)
refInfos, err := ioutil.ReadDir(keepAroundsPath)
if os.IsNotExist(err) {
return nil
}
if err != nil {
return err
}
for _, info := range refInfos {
if info.IsDir() {
continue
}
refName := fmt.Sprintf("%s/%s", keepAroundsPrefix, info.Name())
path := filepath.Join(repoPath, keepAroundsPrefix, info.Name())
if err = checkRef(batch, refName, info); err == nil {
continue
}
if err := fixRef(ctx, repo, batch, path, refName, info.Name()); err != nil {
return err
}
}
return nil
}
func checkRef(batch *catfile.Batch, refName string, info os.FileInfo) error {
if info.Size() == 0 {
return errors.New("checkRef: Ref file is empty")
}
_, err := batch.Info(refName)
return err
}
func fixRef(ctx context.Context, repo *gitalypb.Repository, batch *catfile.Batch, 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 := batch.Info(sha); err != nil {
return nil
}
// The name is a valid sha, recreate the ref
updateRefArgs := []string{"update-ref", name, sha}
cmd, err := git.Command(ctx, repo, updateRefArgs...)
if err != nil {
return err
}
if err = cmd.Wait(); err != nil {
return err
}
return nil
}
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