/*
* 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.ejb3.stateless;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import org.jboss.aop.Dispatcher;
import org.jboss.aop.advice.Interceptor;
import org.jboss.aop.joinpoint.MethodInvocation;
import org.jboss.aop.util.MethodHashing;
import org.jboss.aop.util.PayloadKey;
import org.jboss.aspects.asynch.AsynchMixin;
import org.jboss.aspects.asynch.AsynchProvider;
import org.jboss.aspects.remoting.ClusterConstants;
import org.jboss.aspects.remoting.FamilyWrapper;
import org.jboss.aspects.remoting.InvokeRemoteInterceptor;
import org.jboss.ejb3.Container;
import org.jboss.ejb3.Ejb3Registry;
import org.jboss.ejb3.JBossProxy;
import org.jboss.ejb3.ProxyUtils;
import org.jboss.ejb3.asynchronous.AsynchronousInterceptor;
import org.jboss.ejb3.remoting.BaseRemoteProxy;
import org.jboss.ejb3.remoting.ClusteredIsLocalInterceptor;
import org.jboss.ejb3.remoting.IsLocalInterceptor;
import org.jboss.ha.client.loadbalance.LoadBalancePolicy;
/**
* InvocationHandler for a clustered SLSB proxy.
*
* @author <a href="mailto:bill@jboss.org">Bill Burke</a>
* @author Brian Stansberry
* @version $Revision: 68144 $
*/
public class StatelessClusteredProxy extends BaseRemoteProxy
{
private static final long serialVersionUID = -4100015258079818357L;
protected FamilyWrapper family;
protected LoadBalancePolicy lbPolicy;
AsynchProvider provider;
protected String partitionName;
public StatelessClusteredProxy(Container container, Interceptor[] interceptors, FamilyWrapper family, LoadBalancePolicy lbPolicy, String partitionName)
{
super(container, interceptors);
this.family = family;
this.lbPolicy = lbPolicy;
this.partitionName = partitionName;
}
public StatelessClusteredProxy(AsynchProvider provider, String containerId, String containerGuid, Interceptor[] interceptors, FamilyWrapper family, LoadBalancePolicy lbPolicy, String partitionName)
{
super(containerId, containerGuid, interceptors);
this.provider = provider;
this.family = family;
this.lbPolicy = lbPolicy;
this.partitionName = partitionName;
}
public StatelessClusteredProxy()
{
}
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable
{
if (method.getDeclaringClass() == AsynchProvider.class)
{
return provider.getFuture();
}
long hash = MethodHashing.calculateHash(method);
Object ret = ProxyUtils.handleCallLocally(hash, (JBossProxy) proxy, this, method, args);
if (ret != null)
{
return ret;
}
MethodInvocation sri = new MethodInvocation(interceptors, hash, method, method, null);
sri.setArguments(args);
sri.setInstanceResolver(metadata);
sri.getMetaData().addMetaData(Dispatcher.DISPATCHER, Dispatcher.OID, containerId, PayloadKey.AS_IS);
sri.getMetaData().addMetaData(ClusterConstants.CLUSTERED_REMOTING, ClusterConstants.CLUSTER_FAMILY_WRAPPER, family, PayloadKey.AS_IS);
sri.getMetaData().addMetaData(ClusterConstants.CLUSTERED_REMOTING, ClusterConstants.LOADBALANCE_POLICY, lbPolicy, PayloadKey.AS_IS);
sri.getMetaData().addMetaData(InvokeRemoteInterceptor.REMOTING, InvokeRemoteInterceptor.SUBSYSTEM, "AOP", PayloadKey.AS_IS);
sri.getMetaData().addMetaData(ClusteredIsLocalInterceptor.PARTITION_NAME, ClusteredIsLocalInterceptor.PARTITION_NAME, partitionName, PayloadKey.TRANSIENT);
sri.getMetaData().addMetaData(IsLocalInterceptor.IS_LOCAL, IsLocalInterceptor.GUID, containerGuid, PayloadKey.AS_IS);
if (provider != null)
{
sri.getMetaData().addMetaData(AsynchronousInterceptor.ASYNCH, AsynchronousInterceptor.INVOKE_ASYNCH, "YES", PayloadKey.AS_IS);
}
return sri.invokeNext();
}
public Object getAsynchronousProxy(Object proxy)
{
Class[] infs = proxy.getClass().getInterfaces();
if (!ProxyUtils.isAsynchronous(infs))
{
Class[] interfaces = ProxyUtils.addAsynchProviderInterface(infs);
AsynchMixin mixin = new AsynchMixin();
Interceptor[] newInterceptors = ProxyUtils.addAsynchProxyInterceptor(mixin, interceptors);
StatelessClusteredProxy handler = new StatelessClusteredProxy(mixin, containerId, containerGuid, newInterceptors, family, lbPolicy, partitionName);
return Proxy.newProxyInstance(Thread.currentThread().getContextClassLoader(), interfaces, handler);
}
//I was already asynchronous
return proxy;
}
public String toString()
{
return containerId.toString();
}
}