ActiveMQ example source code file (VMTransportServer.java)

This example ActiveMQ source code file (VMTransportServer.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - ActiveMQ tags/keywords

atomicinteger, inetsocketaddress, io, ioexception, ioexception, net, network, responsecorrelator, server, transportacceptlistener, transportserver, uri, uri, vmtransport, vmtransport, vmtransportserver, vmtransportserver

The ActiveMQ VMTransportServer.java source code

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */
package org.apache.activemq.transport.vm;

import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.URI;
import java.util.concurrent.atomic.AtomicInteger;

import org.apache.activemq.command.BrokerInfo;
import org.apache.activemq.transport.MutexTransport;
import org.apache.activemq.transport.ResponseCorrelator;
import org.apache.activemq.transport.Transport;
import org.apache.activemq.transport.TransportAcceptListener;
import org.apache.activemq.transport.TransportServer;

/**
 * Broker side of the VMTransport
 */
public class VMTransportServer implements TransportServer {

    private TransportAcceptListener acceptListener;
    private final URI location;
    private boolean disposed;

    private final AtomicInteger connectionCount = new AtomicInteger(0);
    private final boolean disposeOnDisconnect;

    /**
     * @param location
     * @param disposeOnDisconnect
     */
    public VMTransportServer(URI location, boolean disposeOnDisconnect) {
        this.location = location;
        this.disposeOnDisconnect = disposeOnDisconnect;
    }

    /**
     * @return a pretty print of this
     */
    public String toString() {
        return "VMTransportServer(" + location + ")";
    }

    /**
     * @return new VMTransport
     * @throws IOException
     */
    public VMTransport connect() throws IOException {
        TransportAcceptListener al;
        synchronized (this) {
            if (disposed) {
                throw new IOException("Server has been disposed.");
            }
            al = acceptListener;
        }
        if (al == null) {
            throw new IOException("Server TransportAcceptListener is null.");
        }

        connectionCount.incrementAndGet();
        VMTransport client = new VMTransport(location) {
            public void stop() throws Exception {
            	if (stopping.compareAndSet(false, true) && !disposed) {
					super.stop();
					if (connectionCount.decrementAndGet() == 0
							&& disposeOnDisconnect) {
						VMTransportServer.this.stop();
					}
				}
            };
        };

        VMTransport server = new VMTransport(location);
        client.setPeer(server);
        server.setPeer(client);
        al.onAccept(configure(server));
        return client;
    }

    /**
     * Configure transport
     * 
     * @param transport
     * @return the Transport
     */
    public static Transport configure(Transport transport) {
        transport = new MutexTransport(transport);
        transport = new ResponseCorrelator(transport);
        return transport;
    }

    /**
     * Set the Transport accept listener for new Connections
     * 
     * @param acceptListener
     */
    public synchronized void setAcceptListener(TransportAcceptListener acceptListener) {
        this.acceptListener = acceptListener;
    }

    public void start() throws IOException {
    }

    public void stop() throws IOException {
        VMTransportFactory.stopped(this);
    }

    public URI getConnectURI() {
        return location;
    }

    public URI getBindURI() {
        return location;
    }

    public void setBrokerInfo(BrokerInfo brokerInfo) {
    }

    public InetSocketAddress getSocketAddress() {
        return null;
    }
    
    public int getConnectionCount() {
        return connectionCount.intValue();
    }
}