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* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.hadoop.yarn.am;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.yarn.api.protocolrecords.RegisterApplicationMasterResponse;
import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
import org.apache.hadoop.yarn.client.api.NMTokenCache;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.elasticsearch.hadoop.yarn.cfg.Config;
import org.elasticsearch.hadoop.yarn.util.Assert;
import org.elasticsearch.hadoop.yarn.util.PropertiesUtils;
import org.elasticsearch.hadoop.yarn.util.YarnUtils;
import static org.elasticsearch.hadoop.yarn.EsYarnConstants.*;
public class ApplicationMaster implements AutoCloseable {
private static final Log log = LogFactory.getLog(ApplicationMaster.class);
private ApplicationAttemptId appId;
private Map<String, String> env;
private AppMasterRpc rpc;
private Configuration cfg;
private EsCluster cluster;
private NMTokenCache nmTokenCache;
private final Config appConfig;
ApplicationMaster(Map<String, String> env) {
this.env = env;
cfg = new YarnConfiguration();
if (env.containsKey(FS_URI)) {
cfg.set(FileSystem.FS_DEFAULT_NAME_KEY, env.get(FS_URI));
}
appConfig = new Config(PropertiesUtils.propsFromBase64String(env.get(CFG_PROPS)));
}
void run() {
log.info("Starting ApplicationMaster...");
if (nmTokenCache == null) {
nmTokenCache = new NMTokenCache();
}
if (rpc == null) {
rpc = new AppMasterRpc(cfg, nmTokenCache);
rpc.start();
}
// register AM
appId = YarnUtils.getApplicationAttemptId(env);
Assert.notNull(appId, "ApplicationAttemptId cannot be found in env %s" + env);
RegisterApplicationMasterResponse amResponse = rpc.registerAM();
cluster = new EsCluster(rpc, appConfig, env);
try {
cluster.start();
} finally {
close();
}
}
@Override
public void close() {
if (cluster == null || cluster.hasFailed()) {
rpc.failAM();
}
else {
rpc.finishAM();
}
if (cluster != null) {
cluster.close();
cluster = null;
}
}
public static void main(String[] args) {
ApplicationMaster am = new ApplicationMaster(System.getenv());
try {
am.run();
} finally {
am.close();
}
}
}