/**
* 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.tez.common.security;
import java.io.IOException;
import java.net.InetSocketAddress;
import org.apache.hadoop.classification.InterfaceAudience.Private;
import org.apache.hadoop.classification.InterfaceStability.Unstable;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.security.SecurityUtil;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
@Private
@Unstable
public class Master {
public enum State {
INITIALIZING, RUNNING;
}
public static String getMasterUserName(Configuration conf) {
return conf.get(YarnConfiguration.RM_PRINCIPAL);
}
// This needs to go into YARN
public static InetSocketAddress getMasterAddress(Configuration conf) {
return conf
.getSocketAddr(YarnConfiguration.RM_ADDRESS,
YarnConfiguration.DEFAULT_RM_ADDRESS,
YarnConfiguration.DEFAULT_RM_PORT);
}
public static String getMasterPrincipal(Configuration conf)
throws IOException {
String masterHostname = getMasterAddress(conf).getHostName();
// get kerberos principal for use as delegation token renewer
return SecurityUtil.getServerPrincipal(getMasterUserName(conf),
masterHostname);
}
}