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|
package diff
import (
"bufio"
"context"
"fmt"
"io"
"strings"
"github.com/golang/protobuf/proto"
"gitlab.com/gitlab-org/gitaly/internal/git"
"gitlab.com/gitlab-org/gitaly/internal/helper/chunk"
"gitlab.com/gitlab-org/gitaly/proto/go/gitalypb"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
const (
numStatDelimiter = 0
)
func (s *server) FindChangedPaths(in *gitalypb.FindChangedPathsRequest, stream gitalypb.DiffService_FindChangedPathsServer) error {
if err := s.validateFindChangedPathsRequestParams(stream.Context(), in); err != nil {
return err
}
diffChunker := chunk.New(&findChangedPathsSender{stream: stream})
cmd, err := s.gitCmdFactory.New(stream.Context(), in.Repository, git.SubCmd{
Name: "diff-tree",
Flags: []git.Option{
git.Flag{Name: "-z"},
git.Flag{Name: "--stdin"},
git.Flag{Name: "-m"},
git.Flag{Name: "-r"},
git.Flag{Name: "--name-status"},
git.Flag{Name: "--no-renames"},
git.Flag{Name: "--no-commit-id"},
git.Flag{Name: "--diff-filter=AMDTC"},
},
}, git.WithStdin(strings.NewReader(strings.Join(in.GetCommits(), "\n")+"\n")))
if err != nil {
if _, ok := status.FromError(err); ok {
return fmt.Errorf("FindChangedPaths Stdin Err: %w", err)
}
return status.Errorf(codes.Internal, "FindChangedPaths: Cmd Err: %v", err)
}
if err := parsePaths(bufio.NewReader(cmd), diffChunker); err != nil {
return fmt.Errorf("FindChangedPaths Parsing Err: %w", err)
}
if err := cmd.Wait(); err != nil {
return status.Errorf(codes.Unavailable, "FindChangedPaths: Cmd Wait Err: %v", err)
}
return diffChunker.Flush()
}
func parsePaths(reader *bufio.Reader, chunker *chunk.Chunker) error {
for {
path, err := nextPath(reader)
if err != nil {
if err == io.EOF {
break
}
return fmt.Errorf("FindChangedPaths Next Path Err: %w", err)
}
if err := chunker.Send(path); err != nil {
return fmt.Errorf("FindChangedPaths: err sending to chunker: %v", err)
}
}
return nil
}
func nextPath(reader *bufio.Reader) (*gitalypb.ChangedPaths, error) {
pathStatus, err := reader.ReadBytes(numStatDelimiter)
if err != nil {
return nil, err
}
path, err := reader.ReadBytes(numStatDelimiter)
if err != nil {
return nil, err
}
statusTypeMap := map[string]gitalypb.ChangedPaths_Status{
"M": gitalypb.ChangedPaths_MODIFIED,
"D": gitalypb.ChangedPaths_DELETED,
"T": gitalypb.ChangedPaths_TYPE_CHANGE,
"C": gitalypb.ChangedPaths_COPIED,
"A": gitalypb.ChangedPaths_ADDED,
}
parsedPath, ok := statusTypeMap[string(pathStatus[:len(pathStatus)-1])]
if !ok {
return nil, status.Errorf(codes.Internal, "FindChangedPaths: Unknown changed paths returned: %v", string(pathStatus))
}
changedPath := &gitalypb.ChangedPaths{
Status: parsedPath,
Path: path[:len(path)-1],
}
return changedPath, nil
}
// This sender implements the interface in the chunker class
type findChangedPathsSender struct {
paths []*gitalypb.ChangedPaths
stream gitalypb.DiffService_FindChangedPathsServer
}
func (t *findChangedPathsSender) Reset() {
t.paths = nil
}
func (t *findChangedPathsSender) Append(m proto.Message) {
t.paths = append(t.paths, m.(*gitalypb.ChangedPaths))
}
func (t *findChangedPathsSender) Send() error {
return t.stream.Send(&gitalypb.FindChangedPathsResponse{
Paths: t.paths,
})
}
func (s *server) validateFindChangedPathsRequestParams(ctx context.Context, in *gitalypb.FindChangedPathsRequest) error {
repo := in.GetRepository()
if _, err := s.locator.GetRepoPath(repo); err != nil {
return err
}
gitRepo := s.localrepo(in.GetRepository())
for _, commit := range in.GetCommits() {
if commit == "" {
return status.Errorf(codes.InvalidArgument, "FindChangedPaths: commits cannot contain an empty commit")
}
containsRef, err := gitRepo.HasRevision(ctx, git.Revision(commit+"^{commit}"))
if err != nil {
return fmt.Errorf("contains ref err: %w", err)
}
if !containsRef {
return status.Errorf(codes.NotFound, "FindChangedPaths: commit: %v can not be found", commit)
}
}
return nil
}
|
