ActiveMQ example source code file (InactivityMonitorTest.java)

This example ActiveMQ source code file (InactivityMonitorTest.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

atomicboolean, atomicboolean, atomicinteger, atomicinteger, client, exception, exception, io, net, network, object, object, runnable, transportlistener, uri, urisyntaxexception, wireformatinfo

The ActiveMQ InactivityMonitorTest.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.tcp;

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

import javax.net.SocketFactory;

import org.apache.activemq.CombinationTestSupport;
import org.apache.activemq.command.WireFormatInfo;
import org.apache.activemq.openwire.OpenWireFormat;
import org.apache.activemq.transport.Transport;
import org.apache.activemq.transport.TransportAcceptListener;
import org.apache.activemq.transport.TransportFactory;
import org.apache.activemq.transport.TransportListener;
import org.apache.activemq.transport.TransportServer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class InactivityMonitorTest extends CombinationTestSupport implements TransportAcceptListener {
    private static final Logger LOG = LoggerFactory.getLogger(InactivityMonitorTest.class);

    public Runnable serverRunOnCommand;
    public Runnable clientRunOnCommand;

    private TransportServer server;
    private Transport clientTransport;
    private Transport serverTransport;

    private final AtomicInteger clientReceiveCount = new AtomicInteger(0);
    private final AtomicInteger clientErrorCount = new AtomicInteger(0);
    private final AtomicInteger serverReceiveCount = new AtomicInteger(0);
    private final AtomicInteger serverErrorCount = new AtomicInteger(0);

    private final AtomicBoolean ignoreClientError = new AtomicBoolean(false);
    private final AtomicBoolean ignoreServerError = new AtomicBoolean(false);

    protected void setUp() throws Exception {
        super.setUp();
        startTransportServer();
    }

    /**
     * @throws Exception
     * @throws URISyntaxException
     */
    private void startClient() throws Exception, URISyntaxException {
        clientTransport = TransportFactory.connect(new URI("tcp://localhost:61616?trace=true&wireFormat.maxInactivityDuration=1000"));
        clientTransport.setTransportListener(new TransportListener() {
            public void onCommand(Object command) {
                clientReceiveCount.incrementAndGet();
                if (clientRunOnCommand != null) {
                    clientRunOnCommand.run();
                }
            }

            public void onException(IOException error) {
                if (!ignoreClientError.get()) {
                    LOG.info("Client transport error:");
                    error.printStackTrace();
                    clientErrorCount.incrementAndGet();
                }
            }

            public void transportInterupted() {
            }

            public void transportResumed() {
            }
        });
        clientTransport.start();
    }

    /**
     * @throws IOException
     * @throws URISyntaxException
     * @throws Exception
     */
    private void startTransportServer() throws IOException, URISyntaxException, Exception {
        server = TransportFactory.bind(new URI("tcp://localhost:61616?trace=true&wireFormat.maxInactivityDuration=1000"));
        server.setAcceptListener(this);
        server.start();
    }

    protected void tearDown() throws Exception {
        ignoreClientError.set(true);
        ignoreServerError.set(true);
        try {
            if (clientTransport != null) {
                clientTransport.stop();
            }
            if (serverTransport != null) {
                serverTransport.stop();
            }
            if (server != null) {
                server.stop();
            }
        } catch (Throwable e) {
            e.printStackTrace();
        }
        super.tearDown();
    }

    public void onAccept(Transport transport) {
        try {
            LOG.info("[" + getName() + "] Server Accepted a Connection");
            serverTransport = transport;
            serverTransport.setTransportListener(new TransportListener() {
                public void onCommand(Object command) {
                    serverReceiveCount.incrementAndGet();
                    if (serverRunOnCommand != null) {
                        serverRunOnCommand.run();
                    }
                }

                public void onException(IOException error) {
                    if (!ignoreClientError.get()) {
                        LOG.info("Server transport error:", error);
                        serverErrorCount.incrementAndGet();
                    }
                }

                public void transportInterupted() {
                }

                public void transportResumed() {
                }
            });
            serverTransport.start();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public void onAcceptError(Exception error) {
        LOG.trace(error.toString());
    }

    public void testClientHang() throws Exception {

        // 
        // Manually create a client transport so that it does not send KeepAlive
        // packets.
        // this should simulate a client hang.
        clientTransport = new TcpTransport(new OpenWireFormat(), SocketFactory.getDefault(), new URI("tcp://localhost:61616"), null);
        clientTransport.setTransportListener(new TransportListener() {
            public void onCommand(Object command) {
                clientReceiveCount.incrementAndGet();
                if (clientRunOnCommand != null) {
                    clientRunOnCommand.run();
                }
            }

            public void onException(IOException error) {
                if (!ignoreClientError.get()) {
                    LOG.info("Client transport error:");
                    error.printStackTrace();
                    clientErrorCount.incrementAndGet();
                }
            }

            public void transportInterupted() {
            }

            public void transportResumed() {
            }
        });
        clientTransport.start();
        WireFormatInfo info = new WireFormatInfo();
        info.setVersion(OpenWireFormat.DEFAULT_VERSION);
        info.setMaxInactivityDuration(1000);
        clientTransport.oneway(info);

        assertEquals(0, serverErrorCount.get());
        assertEquals(0, clientErrorCount.get());

        // Server should consider the client timed out right away since the
        // client is not hart beating fast enough.
        Thread.sleep(6000);

        assertEquals(0, clientErrorCount.get());
        assertTrue(serverErrorCount.get() > 0);
    }

    public void testNoClientHang() throws Exception {
        startClient();

        assertEquals(0, serverErrorCount.get());
        assertEquals(0, clientErrorCount.get());

        Thread.sleep(4000);

        assertEquals(0, clientErrorCount.get());
        assertEquals(0, serverErrorCount.get());
    }

    /**
     * Used to test when a operation blocks. This should not cause transport to
     * get disconnected.
     * 
     * @throws Exception
     * @throws URISyntaxException
     */
    public void initCombosForTestNoClientHangWithServerBlock() throws Exception {

        startClient();

        addCombinationValues("clientInactivityLimit", new Object[] {Long.valueOf(1000)});
        addCombinationValues("serverInactivityLimit", new Object[] {Long.valueOf(1000)});
        addCombinationValues("serverRunOnCommand", new Object[] {new Runnable() {
            public void run() {
                try {
                    LOG.info("Sleeping");
                    Thread.sleep(4000);
                } catch (InterruptedException e) {
                }
            }
        }});
    }

    public void testNoClientHangWithServerBlock() throws Exception {

        startClient();

        assertEquals(0, serverErrorCount.get());
        assertEquals(0, clientErrorCount.get());

        Thread.sleep(4000);

        assertEquals(0, clientErrorCount.get());
        assertEquals(0, serverErrorCount.get());
    }

}