/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.invocation.unified.marshall;
import org.jboss.invocation.Invocation;
import org.jboss.invocation.MarshalledInvocation;
import org.jboss.logging.Logger;
import org.jboss.remoting.InvocationRequest;
import org.jboss.remoting.marshal.serializable.SerializableMarshaller;
import org.jboss.remoting.marshal.Marshaller;
import org.jboss.remoting.marshal.http.HTTPMarshaller;
import org.jboss.tm.TransactionPropagationContextFactory;
import org.jboss.tm.TransactionPropagationContextUtil;
import javax.transaction.SystemException;
import java.io.IOException;
import java.io.OutputStream;
/**
* This marshaller is to be used in conjunction with the UnifiedInvoker and will
* look for an InvocationRequest to be passed to it, which is specific to EJB
* invocations.
*
* @author <a href="mailto:tom@jboss.org">Tom Elrod</a>
*/
public class HTTPInvocationMarshaller extends HTTPMarshaller
{
/** @since 4.2.0 */
static final long serialVersionUID = 1611946070051056241L;
public final static String DATATYPE = "invocationhttp";
private static final Logger log = Logger.getLogger(HTTPInvocationMarshaller.class);
/**
* Marshaller will need to take the dataObject and convert
* into primitive java data types and write to the
* given output. Will check to see if dataObject being passed is
* an InvocationRequest, and if is, process it (including handling propagation of
* transaction). If is not an instance of InvocationRequest, will default back to
* SerializableMarshaller for processing.
*
* @param dataObject Object to be writen to output
* @param output The data output to write the object
* data to.
*/
public void write(Object dataObject, OutputStream output, int version) throws IOException
{
if(dataObject instanceof InvocationRequest)
{
InvocationRequest remoteInv = (InvocationRequest) dataObject;
if(remoteInv.getParameter() instanceof Invocation)
{
Invocation inv = (Invocation) remoteInv.getParameter();
MarshalledInvocation marshInv = new MarshalledInvocation(inv);
if(inv != null)
{
// now that have invocation object related to ejb invocations,
// need to get the possible known payload objects and make sure
// they get serialized.
try
{
marshInv.setTransactionPropagationContext(getTransactionPropagationContext());
}
catch(SystemException e)
{
log.error("Error setting transaction propagation context.", e);
throw new IOException("Error setting transaction context. Message: " + e.getMessage());
}
// reset the invocation parameter within remote invocation
remoteInv.setParameter(marshInv);
}
else
{
//Should never get here, but will check anyways
log.error("Attempting to marshall Invocation but is null. Can not proceed.");
throw new IOException("Can not process data object due to the InvocationRequest's parameter being null.");
}
}
super.write(dataObject, output, version);
}
else // assume this is going to be the response
{
super.write(dataObject, output);
}
}
public Object getTransactionPropagationContext()
throws SystemException
{
TransactionPropagationContextFactory tpcFactory = TransactionPropagationContextUtil.getTPCFactoryClientSide();
return (tpcFactory == null) ? null : tpcFactory.getTransactionPropagationContext();
}
public Marshaller cloneMarshaller() throws CloneNotSupportedException
{
return new HTTPInvocationMarshaller();
}
}