| /** |
| * 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.util; |
| |
| import java.util.Iterator; |
| |
| import org.apache.hadoop.yarn.YarnException; |
| import org.apache.hadoop.yarn.api.records.ApplicationId; |
| import org.apache.hadoop.yarn.factory.providers.RecordFactoryProvider; |
| |
| import static org.apache.hadoop.yarn.util.StringHelper.*; |
| |
| /** |
| * Yarn application related utilities |
| */ |
| public class Apps { |
| public static final String APP = "app"; |
| public static final String ID = "ID"; |
| |
| public static String toString(ApplicationId id) { |
| return _join("app", id.getClusterTimestamp(), id.getId()); |
| } |
| |
| public static ApplicationId toAppID(String aid) { |
| Iterator<String> it = _split(aid).iterator(); |
| return toAppID(APP, aid, it); |
| } |
| |
| public static ApplicationId toAppID(String prefix, String s, Iterator<String> it) { |
| if (!it.hasNext() || !it.next().equals(prefix)) { |
| throwParseException(sjoin(prefix, ID), s); |
| } |
| shouldHaveNext(prefix, s, it); |
| ApplicationId appId = RecordFactoryProvider.getRecordFactory(null).newRecordInstance(ApplicationId.class); |
| appId.setClusterTimestamp(Long.parseLong(it.next())); |
| shouldHaveNext(prefix, s, it); |
| appId.setId(Integer.parseInt(it.next())); |
| return appId; |
| } |
| |
| public static void shouldHaveNext(String prefix, String s, Iterator<String> it) { |
| if (!it.hasNext()) { |
| throwParseException(sjoin(prefix, ID), s); |
| } |
| } |
| |
| public static void throwParseException(String name, String s) { |
| throw new YarnException(join("Error parsing ", name, ": ", s)); |
| } |
| } |