/*******************************************************************************
*Copyright (c) 2009 Eucalyptus Systems, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, only version 3 of the License.
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*
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Please contact Eucalyptus Systems, Inc., 130 Castilian
* Dr., Goleta, CA 93101 USA or visit <http://www.eucalyptus.com/licenses/>
* if you need additional information or have any questions.
*
* This file may incorporate work covered under the following copyright and
* permission notice:
*
* Software License Agreement (BSD License)
*
* Copyright (c) 2008, Regents of the University of California
* All rights reserved.
*
* Redistribution and use of this software in source and binary forms, with
* or without modification, are permitted provided that the following
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*
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* LICENSED MATERIAL, COPYRIGHTED MATERIAL OR PATENTED MATERIAL IN THIS
* SOFTWARE, AND IF ANY SUCH MATERIAL IS DISCOVERED THE PARTY DISCOVERING
* IT MAY INFORM DR. RICH WOLSKI AT THE UNIVERSITY OF CALIFORNIA, SANTA
* BARBARA WHO WILL THEN ASCERTAIN THE MOST APPROPRIATE REMEDY, WHICH IN
* THE REGENTS’ DISCRETION MAY INCLUDE, WITHOUT LIMITATION, REPLACEMENT
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*******************************************************************************/
/*
* Author: chris grzegorczyk <grze@eucalyptus.com>
*/
package com.eucalyptus.ws.client;
import java.net.SocketAddress;
import java.nio.channels.NotYetConnectedException;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.TimeUnit;
import org.apache.log4j.Logger;
import org.jboss.netty.bootstrap.Bootstrap;
import org.jboss.netty.channel.ChannelFactory;
import org.jboss.netty.channel.ChannelFuture;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.ChannelPipeline;
import org.jboss.netty.channel.ChannelPipelineCoverage;
import org.jboss.netty.channel.ChannelPipelineException;
import org.jboss.netty.channel.ChannelStateEvent;
import org.jboss.netty.channel.Channels;
import org.jboss.netty.channel.ExceptionEvent;
import org.jboss.netty.channel.SimpleChannelUpstreamHandler;
import com.eucalyptus.bootstrap.Component;
import com.eucalyptus.records.EventRecord;
public class NioBootstrap extends Bootstrap {
@ChannelPipelineCoverage( "one" )
static final class Connector extends SimpleChannelUpstreamHandler {
private final Bootstrap bootstrap;
private final SocketAddress localAddress;
private final BlockingQueue<ChannelFuture> futureQueue;
private final SocketAddress remoteAddress;
private volatile boolean finished = false;
Connector( final Bootstrap bootstrap, final SocketAddress remoteAddress, final SocketAddress localAddress,
final BlockingQueue<ChannelFuture> futureQueue ) {
this.bootstrap = bootstrap;
this.localAddress = localAddress;
this.futureQueue = futureQueue;
this.remoteAddress = remoteAddress;
}
@Override
public void channelBound( final ChannelHandlerContext context, final ChannelStateEvent event ) {
context.sendUpstream( event );
if ( this.localAddress != null ) {
this.finished = this.futureQueue.offer( event.getChannel( ).connect( this.remoteAddress ) );
}
}
@Override
public void channelOpen( final ChannelHandlerContext context, final ChannelStateEvent event ) {
try {
event.getChannel( ).getConfig( ).setOptions( this.bootstrap.getOptions( ) );
event.getChannel( ).getConfig( ).setConnectTimeoutMillis( 3000 );
event.getChannel( ).getConfig( ).setOption( "tcpNoDelay", true );
event.getChannel( ).getConfig( ).setOption( "keepAlive", true );
event.getChannel( ).getConfig( ).setOption( "reuseAddress", true );
event.getChannel( ).getConfig( ).setOption( "connectTimeoutMillis", 3000 );
} finally {
context.sendUpstream( event );
}
// Bind or connect.
if ( this.localAddress != null ) {
event.getChannel( ).bind( this.localAddress );
} else {
this.finished = this.futureQueue.offer( event.getChannel( ).connect( this.remoteAddress ) );
assert this.finished;
}
}
@Override
public void exceptionCaught( final ChannelHandlerContext ctx, final ExceptionEvent e ) throws Exception {
ctx.sendUpstream( e );
final Throwable cause = e.getCause( );
if ( !( cause instanceof NotYetConnectedException ) && !this.finished ) {
e.getChannel( ).close( );
this.finished = this.futureQueue.offer( Channels.failedFuture( e.getChannel( ), cause ) );
assert this.finished;
}
}
}
public NioBootstrap( ) {
super( );
}
public NioBootstrap( final ChannelFactory channelFactory ) {
super( channelFactory );
}
public ChannelFuture connect( final SocketAddress remoteAddress ) {
if ( remoteAddress == null ) {
throw new NullPointerException( "remotedAddress" );
}
final SocketAddress localAddress = ( SocketAddress ) this.getOption( "localAddress" );
return this.connect( remoteAddress, localAddress );
}
private static Logger LOG = Logger.getLogger( NioBootstrap.class );
public ChannelFuture connect( final SocketAddress remoteAddress, final SocketAddress localAddress ) {
if ( remoteAddress == null ) {
throw new NullPointerException( "remoteAddress" );
}
final BlockingQueue<ChannelFuture> futureQueue = new LinkedBlockingQueue<ChannelFuture>( );
ChannelPipeline pipeline;
try {
pipeline = this.getPipelineFactory( ).getPipeline( );
} catch ( final Exception e ) {
throw new ChannelPipelineException( "Failed to initialize a pipeline.", e );
}
pipeline.addFirst( "connector", new Connector( this, remoteAddress, localAddress, futureQueue ) );
this.getFactory( ).newChannel( pipeline );
ChannelFuture future = null;
do {
try {
future = futureQueue.poll( 50, TimeUnit.MILLISECONDS );
} catch ( final InterruptedException e ) {}
} while ( future == null );
pipeline.remove( "connector" );
return future;
}
}