ForceQueuePolicy.java

/*
 * 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 gobblin.util.executors;

import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.RejectedExecutionHandler;
import java.util.concurrent.ThreadPoolExecutor;


/**
 * {@link java.util.concurrent.RejectedExecutionHandler} that just re-attempts to put into the queue.
 */
public class ForceQueuePolicy implements RejectedExecutionHandler {

  @Override
  public void rejectedExecution(Runnable r, ThreadPoolExecutor executor) {
    try {
      executor.getQueue().put(r);
    } catch (InterruptedException e) {
      //should never happen since we never wait
      throw new RejectedExecutionException(e);
    }
  }
}