require_relative "base_service" module Files class UpdateService < Files::BaseService class FileChangedError < StandardError; end def commit repository.update_file(current_user, @file_path, @file_content, branch: @target_branch, previous_path: @previous_path, message: @commit_message) end private def validate super if file_has_changed? raise FileChangedError.new("You are attempting to update a file that has changed since you started editing it.") end end def file_has_changed? return false unless @last_commit_sha && last_commit @last_commit_sha != last_commit.sha end def last_commit @last_commit ||= Gitlab::Git::Commit. last_for_path(@source_project.repository, @source_branch, @file_path) end end end