content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.beam.runners.samza.util;
  
  import org.apache.beam.model.pipeline.v1.RunnerApi;
  import org.apache.beam.sdk.transforms.DoFn;
  import org.apache.beam.sdk.transforms.reflect.DoFnSignatures;
  import org.apache.beam.sdk.util.construction.graph.ExecutableStage;
  
  /** Utils for determining stateful operators. */
  public class StateUtils {
  
    public static boolean isStateful(DoFn<?, ?> doFn) {
      return DoFnSignatures.isStateful(doFn);
    }
  
    public static boolean isStateful(RunnerApi.ExecutableStagePayload stagePayload) {
      return stagePayload.getUserStatesCount() > 0 || stagePayload.getTimersCount() > 0;
    }
  
    public static boolean isStateful(ExecutableStage executableStage) {
      return executableStage.getUserStates().size() > 0 || executableStage.getTimers().size() > 0;
    }
  }
  