/*
* Copyright 2009 Red Hat, Inc.
* Red Hat 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.hornetq.core.remoting.impl.netty;
import org.hornetq.api.core.HornetQException;
import org.hornetq.core.buffers.impl.ChannelBufferWrapper;
import org.hornetq.core.logging.Logger;
import org.hornetq.spi.core.remoting.BufferHandler;
import org.hornetq.spi.core.remoting.ConnectionLifeCycleListener;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.ChannelStateEvent;
import org.jboss.netty.channel.ExceptionEvent;
import org.jboss.netty.channel.MessageEvent;
import org.jboss.netty.channel.SimpleChannelHandler;
import org.jboss.netty.channel.group.ChannelGroup;
/**
* Common handler implementation for client and server side handler.
*
* @author <a href="mailto:tlee@redhat.com">Trustin Lee</a>
* @version $Rev: 9099 $, $Date: 2010-04-12 07:08:00 -0500 (Mon, 12 Apr 2010) $
*/
class HornetQChannelHandler extends SimpleChannelHandler
{
private static final Logger log = Logger.getLogger(HornetQChannelHandler.class);
private final ChannelGroup group;
private final BufferHandler handler;
private final ConnectionLifeCycleListener listener;
volatile boolean active;
HornetQChannelHandler(final ChannelGroup group,
final BufferHandler handler,
final ConnectionLifeCycleListener listener)
{
this.group = group;
this.handler = handler;
this.listener = listener;
}
@Override
public void channelOpen(final ChannelHandlerContext ctx, final ChannelStateEvent e) throws Exception
{
group.add(e.getChannel());
ctx.sendUpstream(e);
}
@Override
public void messageReceived(final ChannelHandlerContext ctx, final MessageEvent e) throws Exception
{
ChannelBuffer buffer = (ChannelBuffer)e.getMessage();
handler.bufferReceived(e.getChannel().getId(), new ChannelBufferWrapper(buffer));
}
@Override
public void channelDisconnected(final ChannelHandlerContext ctx, final ChannelStateEvent e) throws Exception
{
synchronized (this)
{
if (active)
{
listener.connectionDestroyed(e.getChannel().getId());
active = false;
}
}
}
@Override
public void channelClosed(final ChannelHandlerContext ctx, final ChannelStateEvent e) throws Exception
{
active = false;
}
@Override
public void exceptionCaught(final ChannelHandlerContext ctx, final ExceptionEvent e) throws Exception
{
synchronized (this)
{
if (!active)
{
return;
}
// We don't want to log this - since it is normal for this to happen during failover/reconnect
// and we don't want to spew out stack traces in that event
// The user has access to this exeception anyway via the HornetQException initial cause
HornetQException me = new HornetQException(HornetQException.INTERNAL_ERROR, "Netty exception");
me.initCause(e.getCause());
try
{
listener.connectionException(e.getChannel().getId(), me);
active = false;
}
catch (Exception ex)
{
HornetQChannelHandler.log.error("failed to notify the listener:", ex);
}
}
}
}