/*
* Copyright 2008-2013 Red Hat, Inc, and 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.torquebox.messaging;
import javax.jms.Message;
import org.hornetq.api.core.client.ClientMessage;
import org.jboss.logging.Logger;
import org.jruby.Ruby;
import org.jruby.runtime.builtin.IRubyObject;
import org.projectodd.polyglot.messaging.BaseMessageProcessor;
import org.torquebox.core.util.RuntimeHelper;
import org.torquebox.messaging.component.MessageProcessorComponent;
public class MessageProcessor extends BaseMessageProcessor {
@Override
public void onMessage(Message message) {
if (getConsumer() == null) {
return; // racist!
}
MessageProcessorGroup group = (MessageProcessorGroup) getGroup();
try {
ensureCurrentRuntime();
if (getConsumer() == null) {
return; // racist!
}
MessageProcessorComponent component = (MessageProcessorComponent) group.getComponentResolver().resolve( this.currentRuby );
try {
component.process( message, getSession(), group );
if (isXAEnabled()) {
log.trace( "Committing XA transaction for messageId " + message.getJMSMessageID() );
commitXATransaction();
} else {
log.trace( "Committing non-XA transaction for messageId " + message.getJMSMessageID() );
getSession().commit();
}
} catch (Throwable e) {
if (isXAEnabled()) {
log.trace( "Rolling back XA transaction for messageId " + message.getJMSMessageID() );
rollbackXATransaction( e );
} else {
log.trace( "Rolling back non-XA transaction for messageId " + message.getJMSMessageID() );
getSession().rollback();
throw e;
}
}
} catch (Throwable e) {
log.error( "Unexpected error in " + group.getName(), e );
} finally {
clearCurrentRuntime();
}
}
@Override
protected void prepareTransaction() {
try {
ensureCurrentRuntime();
RuntimeHelper.call( this.currentRuby, this.currentRubyTM, "prepare", new Object[] {} );
RuntimeHelper.call( this.currentRuby, this.currentRubyTM, "enlist", new Object[] { getSession() } );
} catch (Exception e) {
log.error( "Failed to prepare transaction for message", e );
}
}
protected void rollbackXATransaction(Throwable e) {
if (this.currentRuby != null && this.currentRubyTM != null) {
RuntimeHelper.call( this.currentRuby, this.currentRubyTM, "error", new Object[] { e } );
}
}
protected void commitXATransaction() {
if (this.currentRuby != null && this.currentRubyTM != null) {
RuntimeHelper.call( this.currentRuby, this.currentRubyTM, "commit", new Object[] {} );
}
}
protected void ensureCurrentRuntime() throws Exception {
if (this.currentRuby == null) {
this.currentRuby = ((MessageProcessorGroup) getGroup()).getRubyRuntimePool().borrowRuntime( getGroup().getName() );
this.currentRubyTM = RuntimeHelper.invokeClassMethod( this.currentRuby, "TorqueBox::Transactions::Manager", "current", new Object[] {} );
}
}
protected void clearCurrentRuntime() {
if (this.currentRuby != null) {
try {
RuntimeHelper.evalScriptlet( this.currentRuby, "Thread.current[:torquebox_transaction] = nil" );
((MessageProcessorGroup) getGroup()).getRubyRuntimePool().returnRuntime( this.currentRuby );
} catch (Throwable e) {
log.warn( "Possible memory leak?", e );
}
}
this.currentRuby = null;
this.currentRubyTM = null;
}
public static final Logger log = Logger.getLogger( "org.torquebox.messaging" );
private Ruby currentRuby = null;
private Object currentRubyTM = null;
}