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package ref
import (
"context"
"errors"
"gitlab.com/gitlab-org/gitaly/v16/internal/git"
"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) FindBranch(ctx context.Context, req *gitalypb.FindBranchRequest) (*gitalypb.FindBranchResponse, error) {
repository := req.GetRepository()
if err := service.ValidateRepository(repository); err != nil {
return nil, structerr.NewInvalidArgument("%w", err)
}
if len(req.GetName()) == 0 {
return nil, structerr.NewInvalidArgument("Branch name cannot be empty")
}
repo := s.localrepo(repository)
branchName := git.NewReferenceNameFromBranchName(string(req.GetName()))
branchRef, err := repo.GetReference(ctx, branchName)
if err != nil {
if errors.Is(err, git.ErrReferenceNotFound) {
return &gitalypb.FindBranchResponse{}, nil
}
return nil, err
}
commit, err := repo.ReadCommit(ctx, git.Revision(branchRef.Target))
if err != nil {
return nil, err
}
branch, ok := branchName.Branch()
if !ok {
return nil, structerr.NewInvalidArgument("reference is not a branch")
}
return &gitalypb.FindBranchResponse{
Branch: &gitalypb.Branch{
Name: []byte(branch),
TargetCommit: commit,
},
}, nil
}
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