UnifiedInvokerHApublic class UnifiedInvokerHA extends UnifiedInvoker implements org.jboss.invocation.InvokerHA
| Fields Summary |
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| private HashMap | beanMap |
| Constructors Summary |
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public UnifiedInvokerHA()
super();
setSubSystem("invokerha");
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| Methods Summary |
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| public org.jboss.invocation.Invoker | createProxy(javax.management.ObjectName beanName, org.jboss.ha.framework.interfaces.LoadBalancePolicy policy, java.lang.String proxyFamilyName)
Integer hash = new Integer(beanName.hashCode());
HATarget target = (HATarget) beanMap.get(hash);
if(target == null)
{
throw new IllegalStateException("The bean hashCode not found");
}
String familyName = proxyFamilyName;
if(familyName == null)
{
familyName = target.getAssociatedPartition().getPartitionName() + "/" + beanName;
}
UnifiedInvokerHAProxy proxy = new UnifiedInvokerHAProxy(getInvoker().getLocator(), getStrictRMIException(),
target.getReplicants(),
policy, proxyFamilyName, target.getCurrentViewId());
return proxy;
| | public java.io.Serializable | getStub()
return getInvoker().getLocator();
| | public java.lang.Object | invoke(org.jboss.remoting.InvocationRequest invocationReq)Implementation of the server invoker handler interface. Will take the invocation request
and invoke down the interceptor chain.
Invocation invocation = (Invocation) invocationReq.getParameter();
Thread currentThread = Thread.currentThread();
ClassLoader oldCl = currentThread.getContextClassLoader();
ObjectName mbean = null;
try
{
mbean = (ObjectName) Registry.lookup(invocation.getObjectName());
/** Clustering **/
long clientViewId = ((Long) invocation.getValue("CLUSTER_VIEW_ID")).longValue();
HATarget target = (HATarget) beanMap.get(invocation.getObjectName());
if(target == null)
{
// We could throw IllegalStateException but we have a race condition that could occur:
// when we undeploy a bean, the cluster takes some time to converge
// and to recalculate a new viewId and list of replicant for each HATarget.
// Consequently, a client could own an up-to-date list of the replicants
// (before the cluster has converged) and try to perform an invocation
// on this node where the HATarget no more exist, thus receiving a
// wrong exception and no failover is performed with an IllegalStateException
//
throw new GenericClusteringException(GenericClusteringException.COMPLETED_NO,
"target is not/no more registered on this node");
}
if(!target.invocationsAllowed())
{
throw new GenericClusteringException(GenericClusteringException.COMPLETED_NO,
"invocations are currently not allowed on this target");
}
/** End Clustering **/
// The cl on the thread should be set in another interceptor
Object obj = getServer().invoke(mbean,
"invoke",
new Object[]{invocation},
Invocation.INVOKE_SIGNATURE);
/** Clustering **/
HARMIResponse haResponse = new HARMIResponse();
if(clientViewId != target.getCurrentViewId())
{
haResponse.newReplicants = new ArrayList(target.getReplicants());
haResponse.currentViewId = target.getCurrentViewId();
}
haResponse.response = obj;
/** End Clustering **/
return SerializationStreamFactory.getManagerInstance(getInvoker().getLocator().findSerializationType()).createdMarshalledValue(haResponse);
}
catch(Exception e)
{
Throwable th = JMXExceptionDecoder.decode(e);
if(log.isTraceEnabled())
{
log.trace("Failed to invoke on mbean: " + mbean, th);
}
if(th instanceof Exception)
{
e = (Exception) th;
}
throw e;
}
finally
{
currentThread.setContextClassLoader(oldCl);
Thread.interrupted(); // clear interruption because this thread may be pooled.
}
| | protected void | jmxBind()
Registry.bind(getServiceName(), this);
| | public void | registerBean(javax.management.ObjectName beanName, org.jboss.ha.framework.server.HATarget target)
Integer hash = new Integer(beanName.hashCode());
if(beanMap.containsKey(hash))
{
throw new IllegalStateException("Trying to register bean (" + beanName + ") with an hash code that already exists");
}
beanMap.put(hash, target);
| | public void | unregisterBean(javax.management.ObjectName beanName)
Integer hash = new Integer(beanName.hashCode());
beanMap.remove(hash);
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