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A modification of the OpenDMK JMX remote implementation. Licensed under the Apache Software License v2.0 as permitted by the original CDDL license
/*
* JPPF.
* Copyright (C) 2005-2016 JPPF Team.
* http://www.jppf.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* @(#)file ServerIntermediary.java
* @(#)author Sun Microsystems, Inc.
* @(#)version 1.79
* @(#)lastedit 07/03/08
* @(#)build @BUILD_TAG_PLACEHOLDER@
*
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2007 Sun Microsystems, Inc. All Rights Reserved.
*
* The contents of this file are subject to the terms of either the GNU General
* Public License Version 2 only ("GPL") or the Common Development and
* Distribution License("CDDL")(collectively, the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy of the
* License at http://opendmk.dev.java.net/legal_notices/licenses.txt or in the
* LEGAL_NOTICES folder that accompanied this code. See the License for the
* specific language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file found at
* http://opendmk.dev.java.net/legal_notices/licenses.txt
* or in the LEGAL_NOTICES folder that accompanied this code.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code.
*
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
*
* "Portions Copyrighted [year] [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding
*
* "[Contributor] elects to include this software in this distribution
* under the [CDDL or GPL Version 2] license."
*
* If you don't indicate a single choice of license, a recipient has the option
* to distribute your version of this file under either the CDDL or the GPL
* Version 2, or to extend the choice of license to its licensees as provided
* above. However, if you add GPL Version 2 code and therefore, elected the
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* subject to such option by the copyright holder.
*
*/
package javax.management.remote.generic;
import java.io.*;
import javax.management.*;
import javax.management.remote.message.*;
import javax.security.auth.Subject;
import com.sun.jmx.remote.generic.ClientSynchroMessageConnection;
import com.sun.jmx.remote.opt.util.ClassLogger;
/**
* @exclude
*/
abstract class AbstractClientIntermediary {
/** */
ClientSynchroMessageConnection connection;
/** */
GenericConnector client;
/** */
ObjectWrapping serialization;
/** */
ClassLoader myloader;
/** */
GenericClientNotifForwarder notifForwarder;
/** */
GenericClientCommunicatorAdmin communicatorAdmin;
/** */
long lostNotifCounter = 0;
/** */
boolean terminated;
/** */
boolean requestTimeoutReconn;
/** */
static final ObjectName delegateName;
static {
try {
delegateName = new ObjectName("JMImplementation:type=MBeanServerDelegate");
} catch (MalformedObjectNameException e) {
throw new RuntimeException(e.toString());
}
}
/** */
private static final ClassLogger logger = new ClassLogger("javax.management.remote.generic", "AbstractClientIntermediary");
/**
* @param name .
* @param listener .
* @param filter .
* @param handback .
* @param delegationSubject .
* @throws InstanceNotFoundException .
* @throws IOException .
*/
public void addNotificationListener(final ObjectName name, final NotificationListener listener, final NotificationFilter filter, final Object handback, final Subject delegationSubject) throws InstanceNotFoundException, IOException {
logger.trace("addNotificationListener", "name=" + name);
final Integer listenerID = addListenerWithSubject(name, serialization.wrap(filter), delegationSubject, true);
notifForwarder.addNotificationListener(listenerID, name, listener, filter, handback, delegationSubject);
}
/**
* @param name .
* @param wrappedFilter .
* @param delegationSubject .
* @param reconnect .
* @return .
* @throws InstanceNotFoundException .
* @throws IOException .
*/
Integer addListenerWithSubject(final ObjectName name, final Object wrappedFilter, final Subject delegationSubject, final boolean reconnect) throws InstanceNotFoundException, IOException {
final boolean debug = logger.debugOn();
if (debug) logger.debug("addListenerWithSubject", "(ObjectName,Object,Subject)");
final ObjectName[] names = { name };
final Object[] filters = new Object[] { wrappedFilter };
final Object[] params = new Object[] { names, filters };
final int code = MBeanServerRequestMessage.ADD_NOTIFICATION_LISTENERS;
try {
Object o = mBeanServerRequest(code, params, delegationSubject, reconnect);
return (o instanceof Integer) ? (Integer) o : ((Integer[]) o)[0]; // compatible with RI1.0: bug 4948444
} catch (InstanceNotFoundException e) {
throw e;
} catch (Exception e) {
throw appropriateException(e);
}
}
/**
* @param name .
* @param listener .
* @param filter .
* @param handback .
* @param delegationSubject .
* @throws InstanceNotFoundException .
* @throws IOException .
*/
public void addNotificationListener(final ObjectName name, final ObjectName listener, final NotificationFilter filter, final Object handback, final Subject delegationSubject) throws InstanceNotFoundException, IOException {
logger.trace("addNotificationListener", "called");
try {
mBeanServerRequest(MBeanServerRequestMessage.ADD_NOTIFICATION_LISTENER_OBJECTNAME, new Object[] { name, listener, serialization.wrap(filter), serialization.wrap(handback) }, delegationSubject);
} catch (InstanceNotFoundException e) {
throw e;
} catch (Exception e) {
throw appropriateException(e);
}
}
/**
* @param name .
* @param listener .
* @param delegationSubject .
* @throws InstanceNotFoundException .
* @throws ListenerNotFoundException .
* @throws IOException .
*/
public void removeNotificationListener(final ObjectName name, final NotificationListener listener, final Subject delegationSubject) throws InstanceNotFoundException, ListenerNotFoundException, IOException {
logger.trace("removeNotificationListener", "called");
final Integer[] ids = notifForwarder.removeNotificationListener(name, listener);
try {
mBeanServerRequest(MBeanServerRequestMessage.REMOVE_NOTIFICATION_LISTENER, new Object[] { name, ids }, delegationSubject);
} catch (InstanceNotFoundException|ListenerNotFoundException e) {
throw e;
} catch (Exception e) {
throw appropriateException(e);
}
}
/**
* @param name .
* @param listener .
* @param filter .
* @param handback .
* @param delegationSubject .
* @throws InstanceNotFoundException .
* @throws ListenerNotFoundException .
* @throws IOException .
*/
public void removeNotificationListener(final ObjectName name, final NotificationListener listener, final NotificationFilter filter, final Object handback, final Subject delegationSubject)
throws InstanceNotFoundException, ListenerNotFoundException, IOException {
logger.trace("removeNotificationListener", "called");
final Integer ids = notifForwarder.removeNotificationListener(name, listener, filter, handback);
try {
mBeanServerRequest(MBeanServerRequestMessage.REMOVE_NOTIFICATION_LISTENER_FILTER_HANDBACK, new Object[] { name, ids }, delegationSubject);
} catch (InstanceNotFoundException|ListenerNotFoundException e) {
throw e;
} catch (Exception e) {
throw appropriateException(e);
}
}
/**
* @param name .
* @param listener .
* @param delegationSubject .
* @throws InstanceNotFoundException .
* @throws ListenerNotFoundException .
* @throws IOException .
*/
public void removeNotificationListener(final ObjectName name, final ObjectName listener, final Subject delegationSubject) throws InstanceNotFoundException, ListenerNotFoundException, IOException {
logger.trace("removeNotificationListener", "called");
try {
mBeanServerRequest(MBeanServerRequestMessage.REMOVE_NOTIFICATION_LISTENER_OBJECTNAME, new Object[] { name, listener }, delegationSubject);
} catch (InstanceNotFoundException|ListenerNotFoundException e) {
throw e;
} catch (Exception e) {
throw appropriateException(e);
}
}
/**
* @param name .
* @param listener .
* @param filter .
* @param handback .
* @param delegationSubject .
* @throws InstanceNotFoundException .
* @throws ListenerNotFoundException .
* @throws IOException .
*/
public void removeNotificationListener(final ObjectName name, final ObjectName listener, final NotificationFilter filter, final Object handback, final Subject delegationSubject) throws InstanceNotFoundException, ListenerNotFoundException, IOException {
logger.trace("removeNotificationListener", "called");
try {
mBeanServerRequest(MBeanServerRequestMessage.REMOVE_NOTIFICATION_LISTENER_OBJECTNAME_FILTER_HANDBACK, new Object[] { name, listener, serialization.wrap(filter), serialization.wrap(handback) }, delegationSubject);
} catch (InstanceNotFoundException|ListenerNotFoundException e) {
throw e;
} catch (Exception e) {
throw appropriateException(e);
}
}
/** */
public void terminate() {
logger.trace("terminate", "Terminated.");
if (terminated) return;
terminated = true;
communicatorAdmin.terminate();
notifForwarder.terminate();
}
/**
* Used by a GenericConnector
* @return a {@link GenericClientCommunicatorAdmin} instance.
*/
public GenericClientCommunicatorAdmin getCommunicatorAdmin() {
return communicatorAdmin;
}
/**
* @param methodId .
* @param params .
* @param delegationSubject .
* @return .
* @throws Exception .
*/
Object mBeanServerRequest(final int methodId, final Object[] params, final Subject delegationSubject) throws Exception {
return mBeanServerRequest(methodId, params, delegationSubject, true);
}
/**
* @param methodId .
* @param params .
* @param delegationSubject .
* @param reconnect .
* @return .
* @throws Exception .
*/
Object mBeanServerRequest(final int methodId, final Object[] params, final Subject delegationSubject, final boolean reconnect) throws Exception {
MBeanServerRequestMessage req = new MBeanServerRequestMessage(methodId, params, delegationSubject);
MBeanServerResponseMessage resp;
try {
resp = (MBeanServerResponseMessage) connection.sendWithReturn(req);
} catch (IOException e) {
if (terminated || !reconnect || e instanceof InterruptedIOException) throw e;
communicatorAdmin.gotIOException(e);
resp = (MBeanServerResponseMessage) connection.sendWithReturn(req);
}
Object wrappedResult = resp.getWrappedResult(); // may throw exception
Object result;
try {
result = serialization.unwrap(wrappedResult, myloader);
} catch (ClassNotFoundException e) {
throw new IOException(e);
}
if (resp.isException()) throw (Exception) result;
return result;
}
/**
* Throw an exception appropriate for e. This method is called from the final catch (Exception e) clause of methods that have already caught all the exceptions they were expecting,
* except IOException and RuntimeException. If the exception is one of those it is thrown. Otherwise, it is wrapped in an IOException and that is thrown. This method is declared to
* return an exception but never does. This simply allows us to write "throw appropriateException(e)" without getting errors about variables not initialized or missing return statements.
* @param e the exception to convert.
* @return a new {@code Exception}.
* @throws IOException if any error occurs while doing the conversion.
*/
static IOException appropriateException(final Exception e) throws IOException {
if (e instanceof IOException) throw (IOException) e;
if (e instanceof RuntimeException) throw (RuntimeException) e;
throw new IOException("Unexpected exception: " + e.getMessage(), e);
}
}
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