/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, 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.proxy.clustered.invocation;
import java.io.Serializable;
import org.jboss.aop.advice.Interceptor;
import org.jboss.aop.joinpoint.MethodInvocation;
import org.jboss.aop.metadata.SimpleMetaData;
import org.jboss.aop.util.PayloadKey;
import org.jboss.aspects.remoting.ClusterConstants;
import org.jboss.aspects.remoting.FamilyWrapper;
import org.jboss.ejb3.proxy.invocation.InvokableContextStatefulRemoteProxyInvocationHack;
import org.jboss.ha.client.loadbalance.LoadBalancePolicy;
import org.jboss.remoting.InvokerLocator;
/**
* Extends the superclass to add additional clustering metadata to each
* invocation.
*
* @author Brian Stansberry
*
*/
public class InvokableContextClusteredProxyInvocationHandler extends InvokableContextStatefulRemoteProxyInvocationHack
{
// --------------------------------------------------------------------------------||
// Class Members ------------------------------------------------------------------||
// --------------------------------------------------------------------------------||
/** The serialVersionUID */
private static final long serialVersionUID = -3220073092992088020L;
// --------------------------------------------------------------------------------||
// Instance Members ---------------------------------------------------------------||
// --------------------------------------------------------------------------------||
private FamilyWrapper family;
private LoadBalancePolicy lbPolicy;
private String partitionName;
private boolean usePreferredTarget;
// --------------------------------------------------------------------------------||
// Constructor --------------------------------------------------------------------||
// --------------------------------------------------------------------------------||
/**
* Create a new InvokableContextClusteredRemoteProxy.
*
* @param family clustering target information. Cannot be <code>null</code>.
* @param lb LoadBalancePolicy implementation. Cannot be <code>null</code>.
* @param partitionName name of the cluster partition. Cannot be <code>null</code>.
* @param usePreferredTarget should <code>uri</code> be added to the metadata under key
* {@link ClusterConstants.HA_TARGET}? Should be
* <code>true</code> for SFSB proxies.
*/
public InvokableContextClusteredProxyInvocationHandler(Object oid, String containerGuid, InvokerLocator uri,
Interceptor[] interceptors, Serializable sessionId, FamilyWrapper family,
LoadBalancePolicy lb, String partitionName, boolean usePreferredTarget)
{
super(oid, containerGuid, uri, interceptors, sessionId);
assert family != null : "family is null";
assert lb != null : "lb is null";
assert partitionName != null : "partitionName is null";
this.family = family;
this.lbPolicy = lb;
this.partitionName = partitionName;
this.usePreferredTarget = usePreferredTarget;
}
// --------------------------------------------------------------------------------||
// Required Implementations -------------------------------------------------------||
// --------------------------------------------------------------------------------||
/**
* Overrides the superclass to add
*/
@Override
protected void addMetadataToInvocation(MethodInvocation methodInvocation)
{
super.addMetadataToInvocation(methodInvocation);
SimpleMetaData metadata = methodInvocation.getMetaData();
metadata.addMetaData(ClusterConstants.CLUSTERED_REMOTING, ClusterConstants.CLUSTER_FAMILY_WRAPPER, family, PayloadKey.TRANSIENT);
metadata.addMetaData(ClusterConstants.CLUSTERED_REMOTING, ClusterConstants.LOADBALANCE_POLICY, lbPolicy, PayloadKey.TRANSIENT);
metadata.addMetaData(ClusterConstants.CLUSTERED_REMOTING, ClusterConstants.PARTITION_NAME, partitionName, PayloadKey.TRANSIENT);
if (this.usePreferredTarget)
{
metadata.addMetaData(ClusterConstants.CLUSTERED_REMOTING, ClusterConstants.HA_TARGET, getUri(), PayloadKey.TRANSIENT);
}
}
}