/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat, Inc., 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.as.ejb3.remote;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.concurrent.TimeUnit;
import org.jboss.as.remoting.AbstractOutboundConnectionService;
import org.jboss.ejb.client.EJBClientContext;
import org.jboss.ejb.client.remoting.IoFutureHelper;
import org.jboss.logging.Logger;
import org.jboss.msc.inject.Injector;
import org.jboss.msc.service.Service;
import org.jboss.msc.service.ServiceBuilder;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.StartContext;
import org.jboss.msc.service.StartException;
import org.jboss.msc.service.StopContext;
import org.jboss.msc.value.InjectedValue;
import org.jboss.remoting3.Connection;
import org.xnio.IoFuture;
/**
* A service which sets up the {@link EJBClientContext} with appropriate remoting receivers and local receivers.
* The receivers and the client context are configured in a jboss-ejb-client.xml.
*
* @author Jaikiran Pai
*/
public class DescriptorBasedEJBClientContextService implements Service<EJBClientContext> {
public static final ServiceName BASE_SERVICE_NAME = ServiceName.JBOSS.append("ejb3", "dd-based-ejb-client-context");
private static final Logger logger = Logger.getLogger(DescriptorBasedEJBClientContextService.class);
private static final long DEFAULT_CONNECTION_TIMEOUT = 5000L;
/**
* The outbound connection references from which the remoting EJB receivers will be created
*/
private final List<InjectedValue<AbstractOutboundConnectionService>> remotingOutboundConnections = new ArrayList<InjectedValue<AbstractOutboundConnectionService>>();
/**
* (optional) local EJB receiver for the EJB client context
*/
private final InjectedValue<LocalEjbReceiver> localEjbReceiverInjectedValue = new InjectedValue<LocalEjbReceiver>();
/**
* The client context
*/
private volatile EJBClientContext ejbClientContext;
@Override
public synchronized void start(StartContext startContext) throws StartException {
// setup the context with the receivers
final EJBClientContext context = EJBClientContext.create();
// add the (optional) local EJB receiver
final LocalEjbReceiver localEjbReceiver = this.localEjbReceiverInjectedValue.getOptionalValue();
if (localEjbReceiver != null) {
context.registerEJBReceiver(localEjbReceiver);
logger.debug("Added a local EJB receiver to descriptor based EJB client context named " + startContext.getController().getName());
}
// now process the remoting receivers
final Collection<Connection> connections = this.createRemotingConnections();
for (final Connection conection : connections) {
context.registerConnection(conection);
}
logger.debug("Added " + connections.size() + " remoting EJB receivers to descriptor based EJB client context named " + startContext.getController().getName());
this.ejbClientContext = context;
}
@Override
public synchronized void stop(StopContext context) {
this.ejbClientContext = null;
}
@Override
public EJBClientContext getValue() throws IllegalStateException, IllegalArgumentException {
return this.ejbClientContext;
}
public void addRemotingConnectionDependency(final ServiceBuilder<EJBClientContext> serviceBuilder, final ServiceName serviceName) {
final InjectedValue<AbstractOutboundConnectionService> value = new InjectedValue<AbstractOutboundConnectionService>();
serviceBuilder.addDependency(serviceName, AbstractOutboundConnectionService.class, value);
remotingOutboundConnections.add(value);
}
public Injector<LocalEjbReceiver> getLocalEjbReceiverInjector() {
return this.localEjbReceiverInjectedValue;
}
private Collection<Connection> createRemotingConnections() {
final Collection<Connection> connections = new ArrayList<Connection>();
for (final InjectedValue<AbstractOutboundConnectionService> injectedValue : this.remotingOutboundConnections) {
final AbstractOutboundConnectionService outboundConnectionService = injectedValue.getValue();
final String connectionName = outboundConnectionService.getConnectionName();
logger.debug("Creating remoting EJB receiver for connection " + connectionName);
try {
final IoFuture<Connection> futureConnection = outboundConnectionService.connect();
// TODO: Make the timeout configurable
final Connection connection = IoFutureHelper.get(futureConnection, DEFAULT_CONNECTION_TIMEOUT, TimeUnit.MILLISECONDS);
// add it to the successful connection list to be returned
connections.add(connection);
} catch (IOException ioe) {
// just log a WARN and move on to the next
logger.warn(connectionName + " connection will not be used for EJB client context due " +
"to error during connection creation", ioe);
}
}
return connections;
}
}