Ejemplo n.º 1
0
 protected void jmxBind() {
   Registry.bind(getServiceName(), this);
 }
Ejemplo n.º 2
0
  /**
   * 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.
    }
  }