/*******************************************************************************
*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.
*
*
* This file is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* 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
* conditions are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* 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
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. USERS OF
* THIS SOFTWARE ACKNOWLEDGE THE POSSIBLE PRESENCE OF OTHER OPEN SOURCE
* 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
* OF THE CODE SO IDENTIFIED, LICENSING OF THE CODE SO IDENTIFIED, OR
* WITHDRAWAL OF THE CODE CAPABILITY TO THE EXTENT NEEDED TO COMPLY WITH
* ANY SUCH LICENSES OR RIGHTS.
*******************************************************************************/
/*
* Author: chris grzegorczyk <grze@eucalyptus.com>
*/
package com.eucalyptus.ws.handlers;
import java.io.ByteArrayOutputStream;
import org.apache.axiom.om.OMElement;
import org.apache.log4j.Logger;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.ChannelPipelineCoverage;
import org.jboss.netty.channel.MessageEvent;
import org.jboss.netty.handler.codec.http.HttpHeaders;
import org.jboss.netty.handler.codec.http.HttpResponseStatus;
import com.eucalyptus.binding.Binding;
import com.eucalyptus.binding.BindingException;
import com.eucalyptus.binding.BindingManager;
import com.eucalyptus.binding.HoldMe;
import com.eucalyptus.context.Contexts;
import com.eucalyptus.http.MappingHttpRequest;
import com.eucalyptus.http.MappingHttpResponse;
import com.eucalyptus.ws.server.EucalyptusQueryPipeline.RequiredQueryParams;
import edu.ucsb.eucalyptus.msgs.BaseMessage;
import edu.ucsb.eucalyptus.msgs.EucalyptusErrorMessageType;
@ChannelPipelineCoverage( "one" )
public abstract class RestfulMarshallingHandler extends MessageStackHandler {
private static Logger LOG = Logger.getLogger( RestfulMarshallingHandler.class );
protected String namespace;
@Override
public void incomingMessage( ChannelHandlerContext ctx, MessageEvent event ) throws Exception {
if ( event.getMessage( ) instanceof MappingHttpRequest ) {
MappingHttpRequest httpRequest = ( MappingHttpRequest ) event.getMessage( );
String bindingVersion = httpRequest.getParameters( ).remove( RequiredQueryParams.Version.toString( ) );
if ( bindingVersion.matches( "\\d\\d\\d\\d-\\d\\d-\\d\\d" ) ) {
this.namespace = "http://ec2.amazonaws.com/doc/" + bindingVersion + "/";
} else {
this.namespace = "http://msgs.eucalyptus.com";
}
String userName = Contexts.lookup( httpRequest.getCorrelationId( ) ).getUser( ).getName( );
try {
BaseMessage msg = ( BaseMessage ) this.bind( userName, true, httpRequest );
httpRequest.setMessage( msg );
} catch ( Exception e ) {
if ( !( e instanceof BindingException ) ) {
e = new BindingException( e );
}
// Channels.fireExceptionCaught( ctx, e );
throw e;
}
}
}
public abstract Object bind( String user, boolean admin, MappingHttpRequest httpRequest ) throws Exception;
@Override
public void outgoingMessage( ChannelHandlerContext ctx, MessageEvent event ) throws Exception {
if ( event.getMessage( ) instanceof MappingHttpResponse ) {
MappingHttpResponse httpResponse = ( MappingHttpResponse ) event.getMessage( );
Binding binding = BindingManager.getBinding( BindingManager.sanitizeNamespace( this.namespace ) );
ByteArrayOutputStream byteOut = new ByteArrayOutputStream( );
HoldMe.canHas.lock( );
try {
if( httpResponse.getMessage( ) == null ) {
//TODO: do nothing here? really?
} else if ( httpResponse.getMessage( ) instanceof EucalyptusErrorMessageType ) {
EucalyptusErrorMessageType errMsg = ( EucalyptusErrorMessageType ) httpResponse.getMessage( );
byteOut.write( Binding.createRestFault( errMsg.getSource( ), errMsg.getMessage( ), errMsg.getCorrelationId( ) ).getBytes( ) );
httpResponse.setStatus( HttpResponseStatus.BAD_REQUEST );
} else {
try {
OMElement omMsg = binding.toOM( httpResponse.getMessage( ), this.namespace );
omMsg.serialize( byteOut );
} catch ( Throwable e ) {
LOG.debug( e );
LOG.error( e, e );
binding = BindingManager.getBinding( BindingManager.sanitizeNamespace( "http://ec2.amazonaws.com/doc/2009-04-04/" ) );
OMElement omMsg = binding.toOM( httpResponse.getMessage( ), this.namespace );
omMsg.serialize( byteOut );
}
}
} finally {
HoldMe.canHas.unlock( );
}
byte[] req = byteOut.toByteArray( );
ChannelBuffer buffer = ChannelBuffers.copiedBuffer( req );
httpResponse.addHeader( HttpHeaders.Names.CONTENT_LENGTH, String.valueOf( buffer.readableBytes( ) ) );
httpResponse.addHeader( HttpHeaders.Names.CONTENT_TYPE, "application/xml; charset=UTF-8" );
httpResponse.setContent( buffer );
}
}
}