public Invoker createProxy(ObjectName beanName, LoadBalancePolicy policy, String proxyFamilyName)
throws Exception {
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;
}
return createProxy(
getStrictRMIException(),
target.getReplicants(),
policy,
proxyFamilyName,
target.getCurrentViewId());
}
/**
* Implementation of the server invoker handler interface. Will take the invocation request and
* invoke down the interceptor chain.
*
* @param invocationReq
* @return response of the invocation
* @throws Throwable
*/
public Object invoke(InvocationRequest invocationReq) throws Throwable {
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 new MarshalledObject(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.
}
}