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.dataflow.worker;
  
  import com.google.api.services.dataflow.model.CounterUpdate;
  import org.apache.beam.runners.dataflow.worker.util.common.worker.WorkExecutor;
  
  /** An general executor for work in the Dataflow legacy and Beam harness. */
  public interface DataflowWorkExecutor extends WorkExecutor {
  
    /**
     * Extract metric updates that are still pending to be reported to the Dataflow service, removing
     * them from this {@link DataflowWorkExecutor}.
     */
    Iterable<CounterUpdate> extractMetricUpdates();
  }
  