/**
* 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
* <p/>
* http://www.apache.org/licenses/LICENSE-2.0
* <p/>
* 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.tajo.yarn;
import org.apache.thrift.transport.TNonblockingServerSocket;
import org.apache.thrift.transport.TTransportException;
import java.lang.reflect.Field;
import java.net.ServerSocket;
public class ThriftHelper {
/**
* Thrift doesn't provide access to socket it creates,
* this is the only way to know what ephemeral port we bound to.
* TODO: Patch thrift to provide access so we don't have to do this.
*/
static ServerSocket getServerSocketFor(TNonblockingServerSocket thriftSocket)
throws TTransportException {
try {
Field field = TNonblockingServerSocket.class.getDeclaredField("serverSocket_");
field.setAccessible(true);
return (ServerSocket) field.get(thriftSocket);
} catch (NoSuchFieldException e) {
throw new TTransportException("Couldn't get listening port", e);
} catch (SecurityException e) {
throw new TTransportException("Couldn't get listening port", e);
} catch (IllegalAccessException e) {
throw new TTransportException("Couldn't get listening port", e);
}
}
}