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/*
* 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.thrift.transport;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/** Wrapper around ServerSocket for Thrift. */
public class TServerSocket extends TServerTransport {
private static final Logger LOGGER = LoggerFactory.getLogger(TServerSocket.class.getName());
/** Underlying ServerSocket object */
private ServerSocket serverSocket_ = null;
/** Timeout for client sockets from accept */
private int clientTimeout_ = 0;
public static class ServerSocketTransportArgs
extends AbstractServerTransportArgs<ServerSocketTransportArgs> {
ServerSocket serverSocket;
public ServerSocketTransportArgs serverSocket(ServerSocket serverSocket) {
this.serverSocket = serverSocket;
return this;
}
}
/** Creates a server socket from underlying socket object */
public TServerSocket(ServerSocket serverSocket) throws TTransportException {
this(serverSocket, 0);
}
/** Creates a server socket from underlying socket object */
public TServerSocket(ServerSocket serverSocket, int clientTimeout) throws TTransportException {
this(new ServerSocketTransportArgs().serverSocket(serverSocket).clientTimeout(clientTimeout));
}
/** Creates just a port listening server socket */
public TServerSocket(int port) throws TTransportException {
this(port, 0);
}
/** Creates just a port listening server socket */
public TServerSocket(int port, int clientTimeout) throws TTransportException {
this(new InetSocketAddress(port), clientTimeout);
}
public TServerSocket(InetSocketAddress bindAddr) throws TTransportException {
this(bindAddr, 0);
}
public TServerSocket(InetSocketAddress bindAddr, int clientTimeout) throws TTransportException {
this(new ServerSocketTransportArgs().bindAddr(bindAddr).clientTimeout(clientTimeout));
}
public TServerSocket(ServerSocketTransportArgs args) throws TTransportException {
clientTimeout_ = args.clientTimeout;
if (args.serverSocket != null) {
this.serverSocket_ = args.serverSocket;
return;
}
try {
// Make server socket
serverSocket_ = new ServerSocket();
// Prevent 2MSL delay problem on server restarts
serverSocket_.setReuseAddress(true);
// Bind to listening port
serverSocket_.bind(args.bindAddr, args.backlog);
} catch (IOException ioe) {
close();
throw new TTransportException(
"Could not create ServerSocket on address " + args.bindAddr.toString() + ".", ioe);
}
}
public void listen() throws TTransportException {
// Make sure to block on accept
if (serverSocket_ != null) {
try {
serverSocket_.setSoTimeout(0);
} catch (SocketException sx) {
LOGGER.error("Could not set socket timeout.", sx);
}
}
}
@Override
public TSocket accept() throws TTransportException {
if (serverSocket_ == null) {
throw new TTransportException(TTransportException.NOT_OPEN, "No underlying server socket.");
}
Socket result;
try {
result = serverSocket_.accept();
} catch (Exception e) {
throw new TTransportException(e);
}
if (result == null) {
throw new TTransportException("Blocking server's accept() may not return NULL");
}
TSocket socket = new TSocket(result);
socket.setTimeout(clientTimeout_);
return socket;
}
public void close() {
if (serverSocket_ != null) {
try {
serverSocket_.close();
} catch (IOException iox) {
LOGGER.warn("Could not close server socket.", iox);
}
serverSocket_ = null;
}
}
public void interrupt() {
// The thread-safeness of this is dubious, but Java documentation suggests
// that it is safe to do this from a different thread context
close();
}
public ServerSocket getServerSocket() {
return serverSocket_;
}
}
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