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package repository
import (
"context"
"errors"
"fmt"
"os"
"os/exec"
"path/filepath"
"github.com/grpc-ecosystem/go-grpc-middleware/logging/logrus/ctxlogrus"
"gitlab.com/gitlab-org/gitaly/v14/internal/command"
"gitlab.com/gitlab-org/gitaly/v14/internal/gitaly/transaction"
"gitlab.com/gitlab-org/gitaly/v14/internal/helper"
"gitlab.com/gitlab-org/gitaly/v14/internal/metadata/featureflag"
"gitlab.com/gitlab-org/gitaly/v14/internal/safe"
"gitlab.com/gitlab-org/gitaly/v14/internal/transaction/txinfo"
"gitlab.com/gitlab-org/gitaly/v14/internal/transaction/voting"
"gitlab.com/gitlab-org/gitaly/v14/proto/go/gitalypb"
"gitlab.com/gitlab-org/gitaly/v14/streamio"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
func (s *server) RestoreCustomHooks(stream gitalypb.RepositoryService_RestoreCustomHooksServer) error {
if featureflag.TransactionalRestoreCustomHooks.IsEnabled(stream.Context()) {
return s.restoreCustomHooksWithVoting(stream)
}
firstRequest, err := stream.Recv()
if err != nil {
return status.Errorf(codes.Internal, "RestoreCustomHooks: first request failed %v", err)
}
repo := firstRequest.GetRepository()
if repo == nil {
return status.Errorf(codes.InvalidArgument, "RestoreCustomHooks: empty Repository")
}
reader := streamio.NewReader(func() ([]byte, error) {
if firstRequest != nil {
data := firstRequest.GetData()
firstRequest = nil
return data, nil
}
request, err := stream.Recv()
return request.GetData(), err
})
repoPath, err := s.locator.GetPath(repo)
if err != nil {
return status.Errorf(codes.Internal, "RestoreCustomHooks: getting repo path failed %v", err)
}
cmdArgs := []string{
"-xf",
"-",
"-C",
repoPath,
customHooksDir,
}
ctx := stream.Context()
cmd, err := command.New(ctx, exec.Command("tar", cmdArgs...), reader, nil, nil)
if err != nil {
return status.Errorf(codes.Internal, "RestoreCustomHooks: Could not untar custom hooks tar %v", err)
}
if err := cmd.Wait(); err != nil {
return status.Errorf(codes.Internal, "RestoreCustomHooks: cmd wait failed: %v", err)
}
return stream.SendAndClose(&gitalypb.RestoreCustomHooksResponse{})
}
func (s *server) restoreCustomHooksWithVoting(stream gitalypb.RepositoryService_RestoreCustomHooksServer) error {
firstRequest, err := stream.Recv()
if err != nil {
return helper.ErrInternalf("RestoreCustomHooks: first request failed %w", err)
}
ctx := stream.Context()
repo := firstRequest.GetRepository()
if repo == nil {
return helper.ErrInvalidArgumentf("RestoreCustomHooks: empty Repository")
}
v := voting.NewVoteHash()
repoPath, err := s.locator.GetRepoPath(repo)
if err != nil {
return helper.ErrInternalf("RestoreCustomHooks: getting repo path failed %w", err)
}
customHooksPath := filepath.Join(repoPath, customHooksDir)
if err = os.MkdirAll(customHooksPath, os.ModePerm); err != nil {
return helper.ErrInternalf("RestoreCustomHooks: making custom hooks directory %w", err)
}
lockDir, err := safe.NewLockingDirectory(customHooksPath)
if err != nil {
return helper.ErrInternalf("RestoreCustomHooks: creating locking directory: %w", err)
}
if err := lockDir.Lock(); err != nil {
return helper.ErrInternalf("RestoreCustomHooks: locking directory failed: %w", err)
}
defer func() {
if !lockDir.IsLocked() {
return
}
if err := lockDir.Unlock(); err != nil {
ctxlogrus.Extract(ctx).WithError(err).Warn("could not unlock directory")
}
}()
if err := voteCustomHooks(ctx, s.txManager, &v, voting.Prepared); err != nil {
return err
}
reader := streamio.NewReader(func() ([]byte, error) {
var data []byte
defer func() {
_, _ = v.Write(data)
}()
if firstRequest != nil {
data = firstRequest.GetData()
firstRequest = nil
return data, nil
}
request, err := stream.Recv()
data = request.GetData()
return data, err
})
cmdArgs := []string{
"-xf",
"-",
"-C",
repoPath,
customHooksDir,
}
cmd, err := command.New(ctx, exec.Command("tar", cmdArgs...), reader, nil, nil)
if err != nil {
return helper.ErrInternalf("RestoreCustomHooks: Could not untar custom hooks tar %w", err)
}
if err := cmd.Wait(); err != nil {
return helper.ErrInternalf("RestoreCustomHooks: cmd wait failed: %w", err)
}
if err := voteCustomHooks(ctx, s.txManager, &v, voting.Committed); err != nil {
return err
}
if err := lockDir.Unlock(); err != nil {
return helper.ErrInternalf("RestoreCustomHooks: committing lock dir %w", err)
}
return stream.SendAndClose(&gitalypb.RestoreCustomHooksResponse{})
}
func voteCustomHooks(
ctx context.Context,
txManager transaction.Manager,
v *voting.VoteHash,
phase voting.Phase,
) error {
tx, err := txinfo.TransactionFromContext(ctx)
if errors.Is(err, txinfo.ErrTransactionNotFound) {
return nil
} else if err != nil {
return err
}
vote, err := v.Vote()
if err != nil {
return err
}
if err := txManager.Vote(ctx, tx, vote, phase); err != nil {
return fmt.Errorf("vote failed: %w", err)
}
return nil
}
|
