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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.qpid.transport.network.mina;
import static org.apache.qpid.transport.util.Functions.*;
import static org.apache.qpid.configuration.ClientProperties.*;
import org.apache.mina.common.ByteBuffer;
import org.apache.mina.common.IdleStatus;
import org.apache.mina.common.IoFilterChain;
import org.apache.mina.common.IoHandlerAdapter;
import org.apache.mina.common.IoSession;
import org.apache.mina.filter.LoggingFilter;
import org.apache.mina.filter.ReadThrottleFilterBuilder;
import org.apache.mina.filter.SSLFilter;
import org.apache.mina.util.SessionUtil;
import org.apache.qpid.protocol.ReceiverFactory;
import org.apache.qpid.ssl.SSLContextFactory;
import org.apache.qpid.transport.Receiver;
import org.apache.qpid.transport.network.NetworkConnection;
import org.apache.qpid.transport.network.NetworkTransport;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* MinaNetworkHandler
*/
public class MinaNetworkHandler extends IoHandlerAdapter
{
private static final Logger _log = LoggerFactory.getLogger(MinaNetworkHandler.class);
private NetworkTransport _transport = null;
private SSLContextFactory _sslFactory = null;
private ReceiverFactory _factory = null;
private boolean _debug = false;
public MinaNetworkHandler(NetworkTransport transport, SSLContextFactory sslFactory, ReceiverFactory factory)
{
_transport = transport;
_sslFactory = sslFactory;
_factory = factory;
_debug = Boolean.getBoolean("amqj.protocol.debug");
}
public MinaNetworkHandler(NetworkTransport transport, SSLContextFactory sslFactory)
{
this(transport, sslFactory, null);
}
public void messageReceived(IoSession session, Object message)
{
Receiver<java.nio.ByteBuffer> receiver = (Receiver) session.getAttachment();
ByteBuffer buf = (ByteBuffer) message;
try
{
receiver.received(buf.buf());
}
catch (Throwable t)
{
_log.error("Exception handling buffer: " + str(buf.buf()), t);
throw new RuntimeException(t);
}
}
public void exceptionCaught(IoSession ssn, Throwable e)
{
Receiver<java.nio.ByteBuffer> receiver = (Receiver) ssn.getAttachment();
receiver.exception(e);
}
/**
* Invoked by MINA when a MINA session for a new connection is created. This method sets up the filter chain on the
* session, which filters the events handled by this handler. The filter chain consists of, handing off events
* to an optional protectio
*
* @param session The MINA session.
* @throws Exception Any underlying exceptions are allowed to fall through to MINA.
*/
public void sessionCreated(IoSession session) throws Exception
{
_log.info("Created MINA session: " + System.identityHashCode(session));
SessionUtil.initialize(session);
IoFilterChain chain = session.getFilterChain();
// Add SSL filter
if (_sslFactory != null)
{
if (_factory != null)
{
chain.addFirst("sslFilter", new SSLFilter(_sslFactory.buildServerContext()));
}
else
{
chain.addFirst("sslFilter", new SSLFilter(_sslFactory.buildClientContext()));
}
}
// Add IO Protection Read Filter
if (Boolean.getBoolean(PROTECTIO_PROP_NAME))
{
try
{
ReadThrottleFilterBuilder readFilter = new ReadThrottleFilterBuilder();
readFilter.setMaximumConnectionBufferSize(Integer.getInteger(READ_BUFFER_LIMIT_PROP_NAME, READ_BUFFER_LIMIT_DEFAULT));
readFilter.attach(chain);
_log.info("Using IO Read/Write Filter Protection");
}
catch (Exception e)
{
_log.error("Unable to attach IO Read/Write Filter Protection", e);
}
}
// Add logging filter
if (_debug)
{
LoggingFilter logFilter = new LoggingFilter();
chain.addLast("logging", logFilter);
}
if (_factory != null)
{
NetworkConnection network = new MinaNetworkConnection(session);
Receiver<java.nio.ByteBuffer> receiver = _factory.newReceiver(_transport, network);
session.setAttachment(receiver);
}
}
public void sessionClosed(IoSession session) throws Exception
{
Receiver<java.nio.ByteBuffer> receiver = (Receiver) session.getAttachment();
receiver.closed();
}
public void sessionIdle(IoSession session, IdleStatus status)
{
if (status == IdleStatus.READER_IDLE || status == IdleStatus.BOTH_IDLE)
{
_log.info("Idle MINA session: " + System.identityHashCode(session));
session.close();
Receiver<java.nio.ByteBuffer> receiver = (Receiver) session.getAttachment();
receiver.closed();
}
}
}
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