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package diff
import (
"gitlab.com/gitlab-org/gitaly/v15/structerr"
"io"
"gitlab.com/gitlab-org/gitaly/proto/v15/go/gitalypb"
"gitlab.com/gitlab-org/gitaly/v15/internal/git"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/diff"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/service"
)
var maxNumStatBatchSize = 1000
func (s *server) DiffStats(in *gitalypb.DiffStatsRequest, stream gitalypb.DiffService_DiffStatsServer) error {
if err := s.validateDiffStatsRequestParams(in); err != nil {
return err
}
var batch []*gitalypb.DiffStats
cmd, err := s.gitCmdFactory.New(stream.Context(), in.Repository, git.Command{
Name: "diff",
Flags: []git.Option{git.Flag{Name: "--numstat"}, git.Flag{Name: "-z"}},
Args: []string{in.LeftCommitId, in.RightCommitId},
})
if err != nil {
return structerr.NewInternal("cmd: %w", err)
}
parser := diff.NewDiffNumStatParser(cmd)
for {
stat, err := parser.NextNumStat()
if err != nil {
if err == io.EOF {
break
}
return err
}
numStat := &gitalypb.DiffStats{
Additions: stat.Additions,
Deletions: stat.Deletions,
Path: stat.Path,
OldPath: stat.OldPath,
}
batch = append(batch, numStat)
if len(batch) == maxNumStatBatchSize {
if err := sendStats(batch, stream); err != nil {
return err
}
batch = nil
}
}
if err := cmd.Wait(); err != nil {
return structerr.NewUnavailable("%w", err)
}
return sendStats(batch, stream)
}
func sendStats(batch []*gitalypb.DiffStats, stream gitalypb.DiffService_DiffStatsServer) error {
if len(batch) == 0 {
return nil
}
if err := stream.Send(&gitalypb.DiffStatsResponse{Stats: batch}); err != nil {
return structerr.NewUnavailable("send: %w", err)
}
return nil
}
func (s *server) validateDiffStatsRequestParams(in *gitalypb.DiffStatsRequest) error {
repository := in.GetRepository()
if err := service.ValidateRepository(repository); err != nil {
return structerr.NewInvalidArgument("%w", err)
}
if _, err := s.locator.GetRepoPath(repository); err != nil {
return err
}
if err := validateRequest(in); err != nil {
return structerr.NewInvalidArgument("%w", err)
}
return nil
}
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