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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.qpidity.transport.network.io;
import java.io.IOException;
import java.io.InputStream;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketException;
import java.nio.ByteBuffer;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.qpidity.transport.Connection;
import org.apache.qpidity.transport.ConnectionDelegate;
import org.apache.qpidity.transport.Receiver;
import org.apache.qpidity.transport.network.Assembler;
import org.apache.qpidity.transport.network.Disassembler;
import org.apache.qpidity.transport.network.InputHandler;
import org.apache.qpidity.transport.network.OutputHandler;
import org.apache.qpidity.transport.util.Logger;
/**
* This class provides a synchronous IO implementation using
* the java.io classes. The IoHandler runs in its own thread.
* The following params are configurable via JVM arguments
* TCP_NO_DELAY - amqj.tcpNoDelay
* SO_RCVBUF - amqj.receiveBufferSize
* SO_SNDBUF - amqj.sendBufferSize
*/
public class IoHandler implements Runnable
{
private static int DEFAULT_READ_WRITE_BUFFER_SIZE = 64 * 1024;
private Receiver<ByteBuffer> _receiver;
private Socket _socket;
private byte[] _readBuf;
private static AtomicInteger _count = new AtomicInteger();
private int _readBufferSize;
private int _writeBufferSize;
private static final Logger log = Logger.get(IoHandler.class);
private IoHandler()
{
_readBufferSize = Integer.getInteger("amqj.receiveBufferSize",DEFAULT_READ_WRITE_BUFFER_SIZE);
_writeBufferSize = Integer.getInteger("amqj.sendBufferSize",DEFAULT_READ_WRITE_BUFFER_SIZE);
}
public static final Connection connect(String host, int port,
ConnectionDelegate delegate)
{
IoHandler handler = new IoHandler();
return handler.connectInternal(host,port,delegate);
}
private Connection connectInternal(String host, int port,
ConnectionDelegate delegate)
{
try
{
InetAddress address = InetAddress.getByName(host);
_socket = new Socket();
_socket.setReuseAddress(true);
_socket.setTcpNoDelay(Boolean.getBoolean("amqj.tcpNoDelay"));
log.debug("default-SO_RCVBUF : " + _socket.getReceiveBufferSize());
log.debug("default-SO_SNDBUF : " + _socket.getSendBufferSize());
_socket.setSendBufferSize(_writeBufferSize);
_socket.setReceiveBufferSize(_readBufferSize);
log.debug("new-SO_RCVBUF : " + _socket.getReceiveBufferSize());
log.debug("new-SO_SNDBUF : " + _socket.getSendBufferSize());
if (address != null)
{
_socket.connect(new InetSocketAddress(address, port));
}
while (!_socket.isConnected())
{
}
}
catch (SocketException e)
{
throw new RuntimeException("Error connecting to broker",e);
}
catch (IOException e)
{
throw new RuntimeException("Error connecting to broker",e);
}
IoSender sender = new IoSender(_socket);
Connection con = new Connection
(new Disassembler(new OutputHandler(sender), 64*1024 - 1),
delegate);
con.setConnectionId(_count.incrementAndGet());
_receiver = new InputHandler(new Assembler(con), InputHandler.State.PROTO_HDR);
Thread t = new Thread(this);
t.setName("IO Handler Thread-" + _count.get());
t.start();
return con;
}
public void run()
{
// I set the read_buffer size simillar to SO_RCVBUF
// Haven't tested with a lower value to see its better or worse
_readBuf = new byte[_readBufferSize];
try
{
InputStream in = _socket.getInputStream();
int read = 0;
while(_socket.isConnected())
{
try
{
read = in.read(_readBuf);
if (read > 0)
{
ByteBuffer b = ByteBuffer.allocate(read);
b.put(_readBuf,0,read);
b.flip();
_receiver.received(b);
}
}
catch(Exception e)
{
throw new RuntimeException("Error reading from socket input stream",e);
}
}
}
catch (IOException e)
{
throw new RuntimeException("Error getting input stream from the socket",e);
}
finally
{
try
{
_socket.close();
}
catch(Exception e)
{
log.error(e,"Error closing socket");
}
}
}
/**
* Will experiment in a future version with batching
*/
public static void startBatchingFrames(int connectionId)
{
}
}
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