func()

in internal/gitaly/service/operations/submodules.go [23:147]
106 lines of code
21 McCabe index (conditional complexity)

func (s *Server) UserUpdateSubmodule(ctx context.Context, req *gitalypb.UserUpdateSubmoduleRequest) (*gitalypb.UserUpdateSubmoduleResponse, error) {
	if err := s.locator.ValidateRepository(ctx, req.GetRepository()); err != nil {
		return nil, structerr.NewInvalidArgument("%w", err)
	}

	quarantineDir, quarantineRepo, err := s.quarantinedRepo(ctx, req.GetRepository())
	if err != nil {
		return nil, err
	}

	objectHash, err := quarantineRepo.ObjectHash(ctx)
	if err != nil {
		return nil, fmt.Errorf("detecting object hash: %w", err)
	}

	if err := validateUserUpdateSubmoduleRequest(s.locator, objectHash, req); err != nil {
		return nil, structerr.NewInvalidArgument("%w", err)
	}

	branches, err := quarantineRepo.GetBranches(ctx)
	if err != nil {
		return nil, structerr.NewInternal("get branches: %w", err)
	}
	if len(branches) == 0 {
		return &gitalypb.UserUpdateSubmoduleResponse{
			CommitError: "Repository is empty",
		}, nil
	}

	referenceName := git.NewReferenceNameFromBranchName(string(req.GetBranch()))

	var oldOID git.ObjectID
	if expectedOldOID := req.GetExpectedOldOid(); expectedOldOID != "" {
		objectHash, err := quarantineRepo.ObjectHash(ctx)
		if err != nil {
			return nil, structerr.NewInternal("detecting object hash: %w", err)
		}

		oldOID, err = objectHash.FromHex(expectedOldOID)
		if err != nil {
			return nil, structerr.NewInvalidArgument("invalid expected old object ID: %w", err).WithMetadata("old_object_id", expectedOldOID)
		}

		oldOID, err = quarantineRepo.ResolveRevision(ctx, git.Revision(fmt.Sprintf("%s^{object}", oldOID)))
		if err != nil {
			return nil, structerr.NewInvalidArgument("cannot resolve expected old object ID: %w", err).
				WithMetadata("old_object_id", expectedOldOID)
		}
	} else {
		oldOID, err = quarantineRepo.ResolveRevision(ctx, referenceName.Revision())
		if err != nil {
			if errors.Is(err, git.ErrReferenceNotFound) {
				return nil, structerr.NewInvalidArgument("Cannot find branch")
			}
			return nil, structerr.NewInternal("resolving revision: %w", err)
		}
	}

	commitID, err := s.updateSubmodule(ctx, quarantineRepo, req)
	if err != nil {
		errStr := strings.TrimSpace(err.Error())

		var resp *gitalypb.UserUpdateSubmoduleResponse
		if strings.Contains(errStr, legacyErrPrefixInvalidSubmodulePath) {
			resp = &gitalypb.UserUpdateSubmoduleResponse{
				CommitError: legacyErrPrefixInvalidSubmodulePath,
			}
			s.logger.
				WithError(err).
				ErrorContext(ctx, "UserUpdateSubmodule: git2go subcommand failure")
		}
		if strings.Contains(errStr, "is already at") {
			resp = &gitalypb.UserUpdateSubmoduleResponse{
				CommitError: errStr,
			}
		}
		if resp != nil {
			return resp, nil
		}

		return nil, structerr.NewInternal("submodule subcommand: %w", err)
	}

	commitOID, err := objectHash.FromHex(commitID)
	if err != nil {
		return nil, structerr.NewInvalidArgument("cannot parse commit ID: %w", err)
	}

	if err := s.updateReferenceWithHooks(
		ctx,
		req.GetRepository(),
		req.GetUser(),
		quarantineDir,
		referenceName,
		commitOID,
		oldOID,
	); err != nil {
		var customHookErr updateref.CustomHookError
		if errors.As(err, &customHookErr) {
			return &gitalypb.UserUpdateSubmoduleResponse{
				PreReceiveError: customHookErr.Error(),
			}, nil
		}

		var updateRefError updateref.Error
		if errors.As(err, &updateRefError) {
			return &gitalypb.UserUpdateSubmoduleResponse{
				// TODO: this needs to be converted to a structured error, and once done we should stop
				// returning this Ruby-esque error message in favor of the actual error that was
				// returned by `updateReferenceWithHooks()`.
				CommitError: fmt.Sprintf("Could not update %s. Please refresh and try again.", updateRefError.Reference),
			}, nil
		}

		return nil, structerr.NewInternal("updating ref with hooks: %w", err)
	}

	return &gitalypb.UserUpdateSubmoduleResponse{
		BranchUpdate: &gitalypb.OperationBranchUpdate{
			CommitId:      commitID,
			BranchCreated: false,
			RepoCreated:   false,
		},
	}, nil
}