001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.reef.runtime.common.driver.defaults;
020
021import org.apache.reef.util.ThreadLogger;
022import org.apache.reef.wake.EventHandler;
023
024import javax.inject.Inject;
025import java.util.logging.Level;
026import java.util.logging.Logger;
027
028/**
029 * Default handler for close messages from the client: Throw an Exception.
030 */
031public final class DefaultClientCloseHandler implements EventHandler<Void> {
032
033  private static final Logger LOG = Logger.getLogger(DefaultClientCloseHandler.class.getName());
034
035  @Inject
036  DefaultClientCloseHandler() {
037  }
038
039  @Override
040  public void onNext(final Void aVoid) {
041    final String threads = ThreadLogger.getFormattedThreadList(
042        "Received a close message from the client, but no handler was bound for it. Active threads: ");
043    LOG.log(Level.WARNING, threads);
044    final String deadlocks = ThreadLogger.getFormattedDeadlockInfo("Deadlocked threads: ");
045    LOG.log(Level.WARNING, deadlocks);
046
047    throw new RuntimeException(threads + "\n" + deadlocks);
048  }
049}