/*
* 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.twill.internal.appmaster;
import com.google.common.util.concurrent.Service;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.twill.api.RunId;
import org.apache.twill.internal.Constants;
import org.apache.twill.internal.EnvKeys;
import org.apache.twill.internal.RunIds;
import org.apache.twill.internal.ServiceMain;
import org.apache.twill.internal.yarn.VersionDetectYarnAMClientFactory;
import org.apache.twill.zookeeper.RetryStrategies;
import org.apache.twill.zookeeper.ZKClientService;
import org.apache.twill.zookeeper.ZKClientServices;
import org.apache.twill.zookeeper.ZKClients;
import java.io.File;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.concurrent.TimeUnit;
/**
* Main class for launching {@link ApplicationMasterService}.
*/
public final class ApplicationMasterMain extends ServiceMain {
private final String kafkaZKConnect;
private ApplicationMasterMain(String kafkaZKConnect) {
this.kafkaZKConnect = kafkaZKConnect;
}
/**
* Starts the application master.
*/
public static void main(String[] args) throws Exception {
String zkConnect = System.getenv(EnvKeys.TWILL_ZK_CONNECT);
File twillSpec = new File(Constants.Files.TWILL_SPEC);
RunId runId = RunIds.fromString(System.getenv(EnvKeys.TWILL_RUN_ID));
ZKClientService zkClientService =
ZKClientServices.delegate(
ZKClients.reWatchOnExpire(
ZKClients.retryOnFailure(
ZKClientService.Builder.of(zkConnect).build(),
RetryStrategies.fixDelay(1, TimeUnit.SECONDS))));
Configuration conf = new YarnConfiguration(new HdfsConfiguration(new Configuration()));
Service service = new ApplicationMasterService(runId, zkClientService, twillSpec,
new VersionDetectYarnAMClientFactory(conf), createAppLocation(conf));
new ApplicationMasterMain(String.format("%s/%s/kafka", zkConnect, runId.getId())).doMain(zkClientService, service);
}
@Override
protected String getHostname() {
try {
return InetAddress.getLocalHost().getCanonicalHostName();
} catch (UnknownHostException e) {
return "unknown";
}
}
@Override
protected String getKafkaZKConnect() {
return kafkaZKConnect;
}
}