/*
*
* 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.qpid.transport.network.io;
import org.apache.qpid.common.Closeable;
import org.apache.qpid.thread.Threading;
import org.apache.qpid.transport.Receiver;
import org.apache.qpid.transport.TransportException;
import org.apache.qpid.transport.util.Logger;
import javax.net.ssl.SSLSocket;
import java.io.IOException;
import java.io.InputStream;
import java.net.Socket;
import java.net.SocketException;
import java.nio.ByteBuffer;
import java.util.concurrent.atomic.AtomicBoolean;
/**
* IoReceiver
*
*/
final class IoReceiver implements Runnable, Closeable
{
private static final Logger log = Logger.get(IoReceiver.class);
private final Receiver<ByteBuffer> receiver;
private final int bufferSize;
private final Socket socket;
private final long timeout;
private final AtomicBoolean closed = new AtomicBoolean(false);
private final Thread receiverThread;
private static final boolean shutdownBroken;
static
{
String osName = System.getProperty("os.name");
shutdownBroken = osName == null ? false : osName.matches("(?i).*windows.*");
}
public IoReceiver(Socket socket, Receiver<ByteBuffer> receiver, int bufferSize, long timeout)
{
this.receiver = receiver;
this.bufferSize = bufferSize;
this.socket = socket;
this.timeout = timeout;
try
{
//Create but deliberately don't start the thread.
receiverThread = Threading.getThreadFactory().createThread(this);
}
catch(Exception e)
{
throw new RuntimeException("Error creating IOReceiver thread",e);
}
receiverThread.setDaemon(true);
receiverThread.setName(String.format("IoReceiver - %s", socket.getRemoteSocketAddress()));
}
public void initiate()
{
receiverThread.start();
}
public void close()
{
close(false);
}
void close(boolean block)
{
if (!closed.getAndSet(true))
{
try
{
try
{
if (shutdownBroken || socket instanceof SSLSocket)
{
socket.close();
}
else
{
socket.shutdownInput();
}
}
catch(SocketException se)
{
if(!socket.isClosed() && !socket.isInputShutdown())
{
throw se;
}
}
if (block && Thread.currentThread() != receiverThread)
{
receiverThread.join(timeout);
if (receiverThread.isAlive())
{
throw new TransportException("join timed out");
}
}
}
catch (InterruptedException e)
{
throw new TransportException(e);
}
catch (IOException e)
{
throw new TransportException(e);
}
}
}
public void run()
{
final int threshold = bufferSize / 2;
// I set the read buffer size simillar to SO_RCVBUF
// Haven't tested with a lower value to see if it's better or worse
byte[] buffer = new byte[bufferSize];
try
{
InputStream in = socket.getInputStream();
int read = 0;
int offset = 0;
while ((read = in.read(buffer, offset, bufferSize-offset)) != -1)
{
if (read > 0)
{
ByteBuffer b = ByteBuffer.wrap(buffer,offset,read);
receiver.received(b);
offset+=read;
if (offset > threshold)
{
offset = 0;
buffer = new byte[bufferSize];
}
}
}
}
catch (Throwable t)
{
if (!(shutdownBroken &&
t instanceof SocketException &&
t.getMessage().equalsIgnoreCase("socket closed") &&
closed.get()))
{
receiver.exception(t);
}
}
finally
{
receiver.closed();
try
{
socket.close();
}
catch(Exception e)
{
log.warn(e, "Error closing socket");
}
}
}
}