java.rmi.UnmarshalException Java Examples

/**
 * Activate the object for this id.
 *
 * @param force if true, forces the activator to contact the group
 * when activating the object (instead of returning a cached reference);
 * if false, returning a cached value is acceptable.
 * @return the reference to the active remote object
 * @exception ActivationException if activation fails
 * @exception UnknownObjectException if the object is unknown
 * @exception RemoteException if remote call fails
 * @since 1.2
 */
public Remote activate(boolean force)
    throws ActivationException, UnknownObjectException, RemoteException
{
    try {
        MarshalledObject<? extends Remote> mobj =
            activator.activate(this, force);
        return AccessController.doPrivileged(
            new PrivilegedExceptionAction<Remote>() {
                public Remote run() throws IOException, ClassNotFoundException {
                    return mobj.get();
                }
            }, NOPERMS_ACC);
    } catch (PrivilegedActionException pae) {
        Exception ex = pae.getException();
        if (ex instanceof RemoteException) {
            throw (RemoteException) ex;
        } else {
            throw new UnmarshalException("activation failed", ex);
        }
    }

}
 

/**
 * Activate the object for this id.
 *
 * @param force if true, forces the activator to contact the group
 * when activating the object (instead of returning a cached reference);
 * if false, returning a cached value is acceptable.
 * @return the reference to the active remote object
 * @exception ActivationException if activation fails
 * @exception UnknownObjectException if the object is unknown
 * @exception RemoteException if remote call fails
 * @since 1.2
 */
public Remote activate(boolean force)
    throws ActivationException, UnknownObjectException, RemoteException
{
    try {
        MarshalledObject<? extends Remote> mobj =
            activator.activate(this, force);
        return AccessController.doPrivileged(
            new PrivilegedExceptionAction<Remote>() {
                public Remote run() throws IOException, ClassNotFoundException {
                    return mobj.get();
                }
            }, NOPERMS_ACC);
    } catch (PrivilegedActionException pae) {
        Exception ex = pae.getException();
        if (ex instanceof RemoteException) {
            throw (RemoteException) ex;
        } else {
            throw new UnmarshalException("activation failed", ex);
        }
    }

}
 

/**
 *  Tells the given client vm to exit.  Optionally asks it to disconnect
 *  from GemFire before exiting.
 */
private static void stopClient( ClientVmRecord vm,
                                boolean closeConnection,
		  boolean runShutdownHook) {
  log().info( "Issuing stop request to " + vm.toInfoString() );
  synchronized( vm ) {
    if ( vm.getPid() == ClientVmRecord.NO_PID ) {
      log().info( vm.toInfoString() + " is already stopped" );
      return;
    }
    ClientRecord cr = vm.getRepresentativeClient();
    try {
      cr.getTestModule().shutDownVM( closeConnection, runShutdownHook );
    } catch( UnmarshalException ignore ) {
      // vm is shutting down, don't expect clean reply
    } catch( RemoteException e ) {
      String reason = "Unable to reach client " + cr + " in " + vm;
      throw new HydraRuntimeException( reason, e );
    }
  }
  log().info( "Issued stop request to " + vm.toInfoString() );
}
 

private void rethrowDeserializationException(IOException ioe)
        throws ClassNotFoundException, IOException {
    // specially treating for an UnmarshalException
    if (ioe instanceof UnmarshalException) {
        throw ioe; // the fix of 6937053 made ClientNotifForwarder.fetchNotifs
                   // fetch one by one with UnmarshalException
    } else if (ioe instanceof MarshalException) {
        // IIOP will throw MarshalException wrapping a NotSerializableException
        // when a server fails to serialize a response.
        MarshalException me = (MarshalException)ioe;
        if (me.detail instanceof NotSerializableException) {
            throw (NotSerializableException)me.detail;
        }
    }

    // Not serialization problem, return.
}
 

private void rethrowDeserializationException(IOException ioe)
        throws ClassNotFoundException, IOException {
    // specially treating for an UnmarshalException
    if (ioe instanceof UnmarshalException) {
        throw ioe; // the fix of 6937053 made ClientNotifForwarder.fetchNotifs
                   // fetch one by one with UnmarshalException
    } else if (ioe instanceof MarshalException) {
        // IIOP will throw MarshalException wrapping a NotSerializableException
        // when a server fails to serialize a response.
        MarshalException me = (MarshalException)ioe;
        if (me.detail instanceof NotSerializableException) {
            throw (NotSerializableException)me.detail;
        }
    }

    // Not serialization problem, return.
}
 

/**
 * Activate the object for this id.
 *
 * @param force if true, forces the activator to contact the group
 * when activating the object (instead of returning a cached reference);
 * if false, returning a cached value is acceptable.
 * @return the reference to the active remote object
 * @exception ActivationException if activation fails
 * @exception UnknownObjectException if the object is unknown
 * @exception RemoteException if remote call fails
 * @since 1.2
 */
public Remote activate(boolean force)
    throws ActivationException, UnknownObjectException, RemoteException
{
    try {
        MarshalledObject<? extends Remote> mobj =
            activator.activate(this, force);
        return AccessController.doPrivileged(
            new PrivilegedExceptionAction<Remote>() {
                public Remote run() throws IOException, ClassNotFoundException {
                    return mobj.get();
                }
            }, NOPERMS_ACC);
    } catch (PrivilegedActionException pae) {
        Exception ex = pae.getException();
        if (ex instanceof RemoteException) {
            throw (RemoteException) ex;
        } else {
            throw new UnmarshalException("activation failed", ex);
        }
    }

}
 

private static void runClientShutdownHook( ClientVmRecord vm ) {
  log().info( "Running client shutdown hook in " + vm.toInfoString() );
  ClientRecord cr = null;
  synchronized( vm ) {
    if ( vm.getPid() == ClientVmRecord.NO_PID ) {
      log().info( vm.toInfoString() + " is stopped: can't run client shutdown hook" );
      return;
    }
    cr = vm.getRepresentativeClient();
  }
  // must run hook outside vm synchronization since it is a fully synchronous
  // RMI call that could hang, deadlocking master attempt to do stack dumps,
  // but all is well since the cr test module is never unset and we already
  // handle an intervening shutdown
  try {
    cr.getTestModule().runShutdownHook( );
  } catch( UnmarshalException ignore ) {
    // vm is shutting down, don't expect clean reply
  } catch( RemoteException e ) {
    String reason = "Unable to reach client " + cr + " in " + vm;
    log().severe(reason, e);
  }
  log().info( "Ran client shutdown hook in " + vm.toInfoString() );
}
 

/**
 *  Tells the given client vm to exit.  Optionally asks it to disconnect
 *  from GemFire before exiting.
 */
private static void stopClient( ClientVmRecord vm,
                                boolean closeConnection,
		  boolean runShutdownHook) {
  log().info( "Issuing stop request to " + vm.toInfoString() );
  synchronized( vm ) {
    if ( vm.getPid() == ClientVmRecord.NO_PID ) {
      log().info( vm.toInfoString() + " is already stopped" );
      return;
    }
    ClientRecord cr = vm.getRepresentativeClient();
    try {
      cr.getTestModule().shutDownVM( closeConnection, runShutdownHook );
    } catch( UnmarshalException ignore ) {
      // vm is shutting down, don't expect clean reply
    } catch( RemoteException e ) {
      String reason = "Unable to reach client " + cr + " in " + vm;
      throw new HydraRuntimeException( reason, e );
    }
  }
  log().info( "Issued stop request to " + vm.toInfoString() );
}
 

private void rethrowDeserializationException(IOException ioe)
        throws ClassNotFoundException, IOException {
    // specially treating for an UnmarshalException
    if (ioe instanceof UnmarshalException) {
        throw ioe; // the fix of 6937053 made ClientNotifForwarder.fetchNotifs
                   // fetch one by one with UnmarshalException
    } else if (ioe instanceof MarshalException) {
        // IIOP will throw MarshalException wrapping a NotSerializableException
        // when a server fails to serialize a response.
        MarshalException me = (MarshalException)ioe;
        if (me.detail instanceof NotSerializableException) {
            throw (NotSerializableException)me.detail;
        }
    }

    // Not serialization problem, return.
}
 

private void rethrowDeserializationException(IOException ioe)
        throws ClassNotFoundException, IOException {
    // specially treating for an UnmarshalException
    if (ioe instanceof UnmarshalException) {
        throw ioe; // the fix of 6937053 made ClientNotifForwarder.fetchNotifs
                   // fetch one by one with UnmarshalException
    } else if (ioe instanceof MarshalException) {
        // IIOP will throw MarshalException wrapping a NotSerializableException
        // when a server fails to serialize a response.
        MarshalException me = (MarshalException)ioe;
        if (me.detail instanceof NotSerializableException) {
            throw (NotSerializableException)me.detail;
        }
    }

    // Not serialization problem, return.
}
 

private void rethrowDeserializationException(IOException ioe)
        throws ClassNotFoundException, IOException {
    // specially treating for an UnmarshalException
    if (ioe instanceof UnmarshalException) {
        throw ioe; // the fix of 6937053 made ClientNotifForwarder.fetchNotifs
                   // fetch one by one with UnmarshalException
    } else if (ioe instanceof MarshalException) {
        // IIOP will throw MarshalException wrapping a NotSerializableException
        // when a server fails to serialize a response.
        MarshalException me = (MarshalException)ioe;
        if (me.detail instanceof NotSerializableException) {
            throw (NotSerializableException)me.detail;
        }
    }

    // Not serialization problem, return.
}
 

private void rethrowDeserializationException(IOException ioe)
        throws ClassNotFoundException, IOException {
    // specially treating for an UnmarshalException
    if (ioe instanceof UnmarshalException) {
        throw ioe; // the fix of 6937053 made ClientNotifForwarder.fetchNotifs
                   // fetch one by one with UnmarshalException
    } else if (ioe instanceof MarshalException) {
        // IIOP will throw MarshalException wrapping a NotSerializableException
        // when a server fails to serialize a response.
        MarshalException me = (MarshalException)ioe;
        if (me.detail instanceof NotSerializableException) {
            throw (NotSerializableException)me.detail;
        }
    }

    // Not serialization problem, return.
}
 

/**
 * Activate the object for this id.
 *
 * @param force if true, forces the activator to contact the group
 * when activating the object (instead of returning a cached reference);
 * if false, returning a cached value is acceptable.
 * @return the reference to the active remote object
 * @exception ActivationException if activation fails
 * @exception UnknownObjectException if the object is unknown
 * @exception RemoteException if remote call fails
 * @since 1.2
 */
public Remote activate(boolean force)
    throws ActivationException, UnknownObjectException, RemoteException
{
    try {
        MarshalledObject<? extends Remote> mobj =
            activator.activate(this, force);
        return AccessController.doPrivileged(
            new PrivilegedExceptionAction<Remote>() {
                public Remote run() throws IOException, ClassNotFoundException {
                    return mobj.get();
                }
            }, NOPERMS_ACC);
    } catch (PrivilegedActionException pae) {
        Exception ex = pae.getException();
        if (ex instanceof RemoteException) {
            throw (RemoteException) ex;
        } else {
            throw new UnmarshalException("activation failed", ex);
        }
    }

}
 

private void rethrowDeserializationException(IOException ioe)
        throws ClassNotFoundException, IOException {
    // specially treating for an UnmarshalException
    if (ioe instanceof UnmarshalException) {
        throw ioe; // the fix of 6937053 made ClientNotifForwarder.fetchNotifs
                   // fetch one by one with UnmarshalException
    } else if (ioe instanceof MarshalException) {
        // IIOP will throw MarshalException wrapping a NotSerializableException
        // when a server fails to serialize a response.
        MarshalException me = (MarshalException)ioe;
        if (me.detail instanceof NotSerializableException) {
            throw (NotSerializableException)me.detail;
        }
    }

    // Not serialization problem, return.
}
 

/**
 * Activate the object for this id.
 *
 * @param force if true, forces the activator to contact the group
 * when activating the object (instead of returning a cached reference);
 * if false, returning a cached value is acceptable.
 * @return the reference to the active remote object
 * @exception ActivationException if activation fails
 * @exception UnknownObjectException if the object is unknown
 * @exception RemoteException if remote call fails
 * @since 1.2
 */
public Remote activate(boolean force)
    throws ActivationException, UnknownObjectException, RemoteException
{
    try {
        MarshalledObject<? extends Remote> mobj =
            activator.activate(this, force);
        return AccessController.doPrivileged(
            new PrivilegedExceptionAction<Remote>() {
                public Remote run() throws IOException, ClassNotFoundException {
                    return mobj.get();
                }
            }, NOPERMS_ACC);
    } catch (PrivilegedActionException pae) {
        Exception ex = pae.getException();
        if (ex instanceof RemoteException) {
            throw (RemoteException) ex;
        } else {
            throw new UnmarshalException("activation failed", ex);
        }
    }

}
 

private void rethrowDeserializationException(IOException ioe)
        throws ClassNotFoundException, IOException {
    // specially treating for an UnmarshalException
    if (ioe instanceof UnmarshalException) {
        throw ioe; // the fix of 6937053 made ClientNotifForwarder.fetchNotifs
                   // fetch one by one with UnmarshalException
    } else if (ioe instanceof MarshalException) {
        // IIOP will throw MarshalException wrapping a NotSerializableException
        // when a server fails to serialize a response.
        MarshalException me = (MarshalException)ioe;
        if (me.detail instanceof NotSerializableException) {
            throw (NotSerializableException)me.detail;
        }
    }

    // Not serialization problem, return.
}
 

private void rethrowDeserializationException(IOException ioe)
        throws ClassNotFoundException, IOException {
    // specially treating for an UnmarshalException
    if (ioe instanceof UnmarshalException) {
        throw ioe; // the fix of 6937053 made ClientNotifForwarder.fetchNotifs
                   // fetch one by one with UnmarshalException
    } else if (ioe instanceof MarshalException) {
        // IIOP will throw MarshalException wrapping a NotSerializableException
        // when a server fails to serialize a response.
        MarshalException me = (MarshalException)ioe;
        if (me.detail instanceof NotSerializableException) {
            throw (NotSerializableException)me.detail;
        }
    }

    // Not serialization problem, return.
}
 

private void rethrowDeserializationException(IOException ioe)
        throws ClassNotFoundException, IOException {
    // specially treating for an UnmarshalException
    if (ioe instanceof UnmarshalException) {
        throw ioe; // the fix of 6937053 made ClientNotifForwarder.fetchNotifs
                   // fetch one by one with UnmarshalException
    } else if (ioe instanceof MarshalException) {
        // IIOP will throw MarshalException wrapping a NotSerializableException
        // when a server fails to serialize a response.
        MarshalException me = (MarshalException)ioe;
        if (me.detail instanceof NotSerializableException) {
            throw (NotSerializableException)me.detail;
        }
    }

    // Not serialization problem, return.
}
 

@Test(dataProvider = "bindData")
public void UnicastServerRef(String name, Object obj, int expectedFilterCount) throws RemoteException {
    try {
        RemoteImpl impl = RemoteImpl.create();
        UnicastServerRef ref = new UnicastServerRef(new LiveRef(0), impl.checker);

        Echo client = (Echo) ref.exportObject(impl, null, false);

        int count = client.filterCount(obj);
        System.out.printf("count: %d, obj: %s%n", count, obj);
        Assert.assertEquals(count, expectedFilterCount, "wrong number of filter calls");
    } catch (RemoteException rex) {
        if (expectedFilterCount == -1 &&
                UnmarshalException.class.equals(rex.getCause().getClass()) &&
                InvalidClassException.class.equals(rex.getCause().getCause().getClass())) {
            return; // normal expected exception
        }
        rex.printStackTrace();
        Assert.fail("unexpected remote exception", rex);
    } catch (Exception ex) {
        Assert.fail("unexpected exception", ex);
    }
}
 

/**
 * Activate the object for this id.
 *
 * @param force if true, forces the activator to contact the group
 * when activating the object (instead of returning a cached reference);
 * if false, returning a cached value is acceptable.
 * @return the reference to the active remote object
 * @exception ActivationException if activation fails
 * @exception UnknownObjectException if the object is unknown
 * @exception RemoteException if remote call fails
 * @since 1.2
 */
public Remote activate(boolean force)
    throws ActivationException, UnknownObjectException, RemoteException
{
    try {
        MarshalledObject<? extends Remote> mobj =
            activator.activate(this, force);
        return AccessController.doPrivileged(
            new PrivilegedExceptionAction<Remote>() {
                public Remote run() throws IOException, ClassNotFoundException {
                    return mobj.get();
                }
            }, NOPERMS_ACC);
    } catch (PrivilegedActionException pae) {
        Exception ex = pae.getException();
        if (ex instanceof RemoteException) {
            throw (RemoteException) ex;
        } else {
            throw new UnmarshalException("activation failed", ex);
        }
    }

}
 

@Test(dataProvider = "bindData")
public void UnicastServerRef(String name, Object obj, int expectedFilterCount) throws RemoteException {
    try {
        RemoteImpl impl = RemoteImpl.create();
        UnicastServerRef ref = new UnicastServerRef(new LiveRef(0), impl.checker);

        Echo client = (Echo) ref.exportObject(impl, null, false);

        int count = client.filterCount(obj);
        System.out.printf("count: %d, obj: %s%n", count, obj);
        Assert.assertEquals(count, expectedFilterCount, "wrong number of filter calls");
    } catch (RemoteException rex) {
        if (expectedFilterCount == -1 &&
                UnmarshalException.class.equals(rex.getCause().getClass()) &&
                InvalidClassException.class.equals(rex.getCause().getCause().getClass())) {
            return; // normal expected exception
        }
        rex.printStackTrace();
        Assert.fail("unexpected remote exception", rex);
    } catch (Exception ex) {
        Assert.fail("unexpected exception", ex);
    }
}
 

private void rethrowDeserializationException(IOException ioe)
        throws ClassNotFoundException, IOException {
    // specially treating for an UnmarshalException
    if (ioe instanceof UnmarshalException) {
        throw ioe; // the fix of 6937053 made ClientNotifForwarder.fetchNotifs
                   // fetch one by one with UnmarshalException
    } else if (ioe instanceof MarshalException) {
        // IIOP will throw MarshalException wrapping a NotSerializableException
        // when a server fails to serialize a response.
        MarshalException me = (MarshalException)ioe;
        if (me.detail instanceof NotSerializableException) {
            throw (NotSerializableException)me.detail;
        }
    }

    // Not serialization problem, return.
}
 

/**
 * Activate the object for this id.
 *
 * @param force if true, forces the activator to contact the group
 * when activating the object (instead of returning a cached reference);
 * if false, returning a cached value is acceptable.
 * @return the reference to the active remote object
 * @exception ActivationException if activation fails
 * @exception UnknownObjectException if the object is unknown
 * @exception RemoteException if remote call fails
 * @since 1.2
 */
public Remote activate(boolean force)
    throws ActivationException, UnknownObjectException, RemoteException
{
    try {
        MarshalledObject<? extends Remote> mobj =
            activator.activate(this, force);
        return AccessController.doPrivileged(
            new PrivilegedExceptionAction<Remote>() {
                public Remote run() throws IOException, ClassNotFoundException {
                    return mobj.get();
                }
            }, NOPERMS_ACC);
    } catch (PrivilegedActionException pae) {
        Exception ex = pae.getException();
        if (ex instanceof RemoteException) {
            throw (RemoteException) ex;
        } else {
            throw new UnmarshalException("activation failed", ex);
        }
    }

}
 

private void rethrowDeserializationException(IOException ioe)
        throws ClassNotFoundException, IOException {
    // specially treating for an UnmarshalException
    if (ioe instanceof UnmarshalException) {
        throw ioe; // the fix of 6937053 made ClientNotifForwarder.fetchNotifs
                   // fetch one by one with UnmarshalException
    } else if (ioe instanceof MarshalException) {
        // IIOP will throw MarshalException wrapping a NotSerializableException
        // when a server fails to serialize a response.
        MarshalException me = (MarshalException)ioe;
        if (me.detail instanceof NotSerializableException) {
            throw (NotSerializableException)me.detail;
        }
    }

    // Not serialization problem, return.
}
 

@Test(dataProvider = "bindData")
public void UnicastServerRef(String name, Object obj, int expectedFilterCount) throws RemoteException {
    try {
        RemoteImpl impl = RemoteImpl.create();
        UnicastServerRef ref = new UnicastServerRef(new LiveRef(0), impl.checker);

        Echo client = (Echo) ref.exportObject(impl, null, false);

        int count = client.filterCount(obj);
        System.out.printf("count: %d, obj: %s%n", count, obj);
        Assert.assertEquals(count, expectedFilterCount, "wrong number of filter calls");
    } catch (RemoteException rex) {
        if (expectedFilterCount == -1 &&
                UnmarshalException.class.equals(rex.getCause().getClass()) &&
                InvalidClassException.class.equals(rex.getCause().getCause().getClass())) {
            return; // normal expected exception
        }
        rex.printStackTrace();
        Assert.fail("unexpected remote exception", rex);
    } catch (Exception ex) {
        Assert.fail("unexpected exception", ex);
    }
}
 

private static <T> T unwrap(final MarshalledObject<?> mo,
                            final ClassLoader cl1,
                            final ClassLoader cl2,
                            final Class<T> wrappedClass)
    throws IOException {
    if (mo == null) {
        return null;
    }
    try {
        ClassLoader orderCL = AccessController.doPrivileged(
            new PrivilegedExceptionAction<ClassLoader>() {
                public ClassLoader run() throws Exception {
                    return new CombinedClassLoader(Thread.currentThread().getContextClassLoader(),
                            new OrderClassLoaders(cl1, cl2));
                }
            }
        );
        return unwrap(mo, orderCL, wrappedClass);
    } catch (PrivilegedActionException pe) {
        Exception e = extractException(pe);
        if (e instanceof IOException) {
            throw (IOException) e;
        }
        if (e instanceof ClassNotFoundException) {
            throw new UnmarshalException(e.toString(), e);
        }
        logger.warning("unwrap", "Failed to unmarshall object: " + e);
        logger.debug("unwrap", e);
    }
    return null;
}
 

/**
 * Handle server-side dispatch using the RMI 1.1 stub/skeleton
 * protocol, given a non-negative operation number that has
 * already been read from the call stream.
 * Exceptions are handled by the caller to be sent to the remote client.
 *
 * @param obj the target remote object for the call
 * @param call the "remote call" from which operation and
 * method arguments can be obtained.
 * @param op the operation number
 * @throws Exception if unable to marshal return result or
 * release input or output streams
 */
private void oldDispatch(Remote obj, RemoteCall call, int op)
    throws Exception
{
    long hash;              // hash for matching stub with skeleton

    // read remote call header
    ObjectInput in;
    in = call.getInputStream();
    try {
        Class<?> clazz = Class.forName("sun.rmi.transport.DGCImpl_Skel");
        if (clazz.isAssignableFrom(skel.getClass())) {
            ((MarshalInputStream)in).useCodebaseOnly();
        }
    } catch (ClassNotFoundException ignore) { }

    try {
        hash = in.readLong();
    } catch (Exception ioe) {
        throw new UnmarshalException("error unmarshalling call header", ioe);
    }

    // if calls are being logged, write out object id and operation
    logCall(obj, skel.getOperations()[op]);
    unmarshalCustomCallData(in);
    // dispatch to skeleton for remote object
    skel.dispatch(obj, call, op, hash);
}
 

private static <T> T unwrap(final MarshalledObject<?> mo,
                            final ClassLoader cl1,
                            final ClassLoader cl2,
                            final Class<T> wrappedClass)
    throws IOException {
    if (mo == null) {
        return null;
    }
    try {
        ClassLoader orderCL = AccessController.doPrivileged(
            new PrivilegedExceptionAction<ClassLoader>() {
                public ClassLoader run() throws Exception {
                    return new CombinedClassLoader(Thread.currentThread().getContextClassLoader(),
                            new OrderClassLoaders(cl1, cl2));
                }
            }
        );
        return unwrap(mo, orderCL, wrappedClass);
    } catch (PrivilegedActionException pe) {
        Exception e = extractException(pe);
        if (e instanceof IOException) {
            throw (IOException) e;
        }
        if (e instanceof ClassNotFoundException) {
            throw new UnmarshalException(e.toString(), e);
        }
        logger.warning("unwrap", "Failed to unmarshall object: " + e);
        logger.debug("unwrap", e);
    }
    return null;
}
 

private static <T> T unwrap(final MarshalledObject<?> mo,
                            final ClassLoader cl1,
                            final ClassLoader cl2,
                            final Class<T> wrappedClass)
    throws IOException {
    if (mo == null) {
        return null;
    }
    try {
        ClassLoader orderCL = AccessController.doPrivileged(
            new PrivilegedExceptionAction<ClassLoader>() {
                public ClassLoader run() throws Exception {
                    return new CombinedClassLoader(Thread.currentThread().getContextClassLoader(),
                            new OrderClassLoaders(cl1, cl2));
                }
            }
        );
        return unwrap(mo, orderCL, wrappedClass);
    } catch (PrivilegedActionException pe) {
        Exception e = extractException(pe);
        if (e instanceof IOException) {
            throw (IOException) e;
        }
        if (e instanceof ClassNotFoundException) {
            throw new UnmarshalException(e.toString(), e);
        }
        logger.warning("unwrap", "Failed to unmarshall object: " + e);
        logger.debug("unwrap", e);
    }
    return null;
}
 

private NotificationResult fetchNotifs() {
    try {
        NotificationResult nr = ClientNotifForwarder.this.
            fetchNotifs(clientSequenceNumber,maxNotifications,
                        timeout);

        if (logger.traceOn()) {
            logger.trace("NotifFetcher-run",
                         "Got notifications from the server: "+nr);
        }

        return nr;
    } catch (ClassNotFoundException | NotSerializableException | UnmarshalException e) {
        logger.trace("NotifFetcher.fetchNotifs", e);
        return fetchOneNotif();
    } catch (IOException ioe) {
        if (!shouldStop()) {
            logger.error("NotifFetcher-run",
                         "Failed to fetch notification, " +
                         "stopping thread. Error is: " + ioe, ioe);
            logger.debug("NotifFetcher-run",ioe);
        }

        // no more fetching
        return null;
    }
}