| /** |
| * 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.hadoop.yarn.event; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.yarn.event.AsyncDispatcher; |
| import org.apache.hadoop.yarn.event.Event; |
| import org.apache.hadoop.yarn.event.EventHandler; |
| |
| @SuppressWarnings({"unchecked", "rawtypes"}) |
| public class InlineDispatcher extends AsyncDispatcher { |
| private static final Log LOG = LogFactory.getLog(InlineDispatcher.class); |
| |
| private class TestEventHandler implements EventHandler { |
| @Override |
| public void handle(Event event) { |
| dispatch(event); |
| } |
| } |
| @Override |
| protected void dispatch(Event event) { |
| LOG.info("Dispatching the event " + event.getClass().getName() + "." |
| + event.toString()); |
| |
| Class<? extends Enum> type = event.getType().getDeclaringClass(); |
| if (eventDispatchers.get(type) != null) { |
| eventDispatchers.get(type).handle(event); |
| } |
| } |
| @Override |
| public EventHandler getEventHandler() { |
| return new TestEventHandler(); |
| } |
| |
| public static class EmptyEventHandler implements EventHandler<Event> { |
| @Override |
| public void handle(Event event) { |
| //do nothing |
| } |
| } |
| } |