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ActiveMQ example source code file (BrokerView.java)

This example ActiveMQ source code file (BrokerView.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

activemqqueue, activemqtopic, class, connectioncontext, connectioncontext, consumerid, exception, exception, io, managedregionbroker, management, net, network, objectname, objectname, reflection, removesubscriptioninfo, string, string

The ActiveMQ BrokerView.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.broker.jmx;

import java.io.File;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.URI;
import java.net.URL;
import java.util.concurrent.atomic.AtomicInteger;
import javax.management.ObjectName;

import org.apache.activemq.ActiveMQConnectionMetaData;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.broker.TransportConnector;
import org.apache.activemq.broker.region.Subscription;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.command.ActiveMQTopic;
import org.apache.activemq.command.ConsumerId;
import org.apache.activemq.command.ConsumerInfo;
import org.apache.activemq.command.RemoveSubscriptionInfo;
import org.apache.activemq.network.NetworkConnector;
import org.apache.activemq.util.BrokerSupport;

/**
 * 
 */
public class BrokerView implements BrokerViewMBean {

    ManagedRegionBroker broker;
    private final BrokerService brokerService;
    private final AtomicInteger sessionIdCounter = new AtomicInteger(0);
    private ObjectName jmsJobScheduler;

    public BrokerView(BrokerService brokerService, ManagedRegionBroker managedBroker) throws Exception {
        this.brokerService = brokerService;
        this.broker = managedBroker;
    }

    public ManagedRegionBroker getBroker() {
        return broker;
    }

    public void setBroker(ManagedRegionBroker broker) {
        this.broker = broker;
    }
    
    public String getBrokerId() {
        return broker.getBrokerId().toString();
    }
    
    public String getBrokerName() {
        return broker.getBrokerName();
    }    
    
    public String getBrokerVersion() {
    	return ActiveMQConnectionMetaData.PROVIDER_VERSION;
    }

    public void gc() throws Exception {
        brokerService.getBroker().gc();
    }

    public void start() throws Exception {
        brokerService.start();
    }

    public void stop() throws Exception {
        brokerService.stop();
    }
    
    public void stopGracefully(String connectorName, String queueName, long timeout, long pollInterval)
            throws Exception {
        brokerService.stopGracefully(connectorName, queueName, timeout, pollInterval);
    }

    
    public long getTotalEnqueueCount() {
        return broker.getDestinationStatistics().getEnqueues().getCount();
    }

    public long getTotalDequeueCount() {
        return broker.getDestinationStatistics().getDequeues().getCount();
    }

    public long getTotalConsumerCount() {
        return broker.getDestinationStatistics().getConsumers().getCount();
    }

    public long getTotalMessageCount() {
        return broker.getDestinationStatistics().getMessages().getCount();
    }

    public long getTotalMessagesCached() {
        return broker.getDestinationStatistics().getMessagesCached().getCount();
    }

    public int getMemoryPercentUsage() {
        return brokerService.getSystemUsage().getMemoryUsage().getPercentUsage();
    }

    public long getMemoryLimit() {
        return brokerService.getSystemUsage().getMemoryUsage().getLimit();
    }

    public void setMemoryLimit(long limit) {
        brokerService.getSystemUsage().getMemoryUsage().setLimit(limit);
    }
    
    public long getStoreLimit() {
        return brokerService.getSystemUsage().getStoreUsage().getLimit();
    }

    public int getStorePercentUsage() {
        return brokerService.getSystemUsage().getStoreUsage().getPercentUsage();
    }

 
    public long getTempLimit() {
       return brokerService.getSystemUsage().getTempUsage().getLimit();
    }

    public int getTempPercentUsage() {
       return brokerService.getSystemUsage().getTempUsage().getPercentUsage();
    }

    public void setStoreLimit(long limit) {
        brokerService.getSystemUsage().getStoreUsage().setLimit(limit);
    }

    public void setTempLimit(long limit) {
        brokerService.getSystemUsage().getTempUsage().setLimit(limit);
    }
    

    public void resetStatistics() {
        broker.getDestinationStatistics().reset();
    }

    public void enableStatistics() {
        broker.getDestinationStatistics().setEnabled(true);
    }

    public void disableStatistics() {
        broker.getDestinationStatistics().setEnabled(false);
    }

    public boolean isStatisticsEnabled() {
        return broker.getDestinationStatistics().isEnabled();
    }
    
    public boolean isPersistent() {
        return brokerService.isPersistent();
    }
    
    public boolean isSlave() {
        return brokerService.isSlave();
    }

    public void terminateJVM(int exitCode) {
        System.exit(exitCode);
    }

    public ObjectName[] getTopics() {
        return broker.getTopics();
    }

    public ObjectName[] getQueues() {
        return broker.getQueues();
    }

    public ObjectName[] getTemporaryTopics() {
        return broker.getTemporaryTopics();
    }

    public ObjectName[] getTemporaryQueues() {
        return broker.getTemporaryQueues();
    }

    public ObjectName[] getTopicSubscribers() {
        return broker.getTopicSubscribers();
    }

    public ObjectName[] getDurableTopicSubscribers() {
        return broker.getDurableTopicSubscribers();
    }

    public ObjectName[] getQueueSubscribers() {
        return broker.getQueueSubscribers();
    }

    public ObjectName[] getTemporaryTopicSubscribers() {
        return broker.getTemporaryTopicSubscribers();
    }

    public ObjectName[] getTemporaryQueueSubscribers() {
        return broker.getTemporaryQueueSubscribers();
    }

    public ObjectName[] getInactiveDurableTopicSubscribers() {
        return broker.getInactiveDurableTopicSubscribers();
    }

    public String addConnector(String discoveryAddress) throws Exception {
        TransportConnector connector = brokerService.addConnector(discoveryAddress);
        connector.start();
        return connector.getName();
    }

    public String addNetworkConnector(String discoveryAddress) throws Exception {
        NetworkConnector connector = brokerService.addNetworkConnector(discoveryAddress);
        connector.start();
        return connector.getName();
    }

    public boolean removeConnector(String connectorName) throws Exception {
        TransportConnector connector = brokerService.getConnectorByName(connectorName);
        connector.stop();
        return brokerService.removeConnector(connector);
    }

    public boolean removeNetworkConnector(String connectorName) throws Exception {
        NetworkConnector connector = brokerService.getNetworkConnectorByName(connectorName);
        connector.stop();
        return brokerService.removeNetworkConnector(connector);
    }

    public void addTopic(String name) throws Exception {
        broker.getContextBroker().addDestination(BrokerSupport.getConnectionContext(broker.getContextBroker()), new ActiveMQTopic(name),true);
    }

    public void addQueue(String name) throws Exception {
        broker.getContextBroker().addDestination(BrokerSupport.getConnectionContext(broker.getContextBroker()), new ActiveMQQueue(name),true);
    }

    public void removeTopic(String name) throws Exception {
        broker.getContextBroker().removeDestination(BrokerSupport.getConnectionContext(broker.getContextBroker()), new ActiveMQTopic(name),
                                 1000);
    }

    public void removeQueue(String name) throws Exception {
        broker.getContextBroker().removeDestination(BrokerSupport.getConnectionContext(broker.getContextBroker()), new ActiveMQQueue(name),
                                 1000);
    }

    public ObjectName createDurableSubscriber(String clientId, String subscriberName, String topicName,
                                              String selector) throws Exception {
        ConnectionContext context = new ConnectionContext();
        context.setBroker(broker);
        context.setClientId(clientId);
        ConsumerInfo info = new ConsumerInfo();
        ConsumerId consumerId = new ConsumerId();
        consumerId.setConnectionId(clientId);
        consumerId.setSessionId(sessionIdCounter.incrementAndGet());
        consumerId.setValue(0);
        info.setConsumerId(consumerId);
        info.setDestination(new ActiveMQTopic(topicName));
        info.setSubscriptionName(subscriberName);
        info.setSelector(selector);
        Subscription subscription = broker.addConsumer(context, info);
        broker.removeConsumer(context, info);
        if (subscription != null) {
            return subscription.getObjectName();
        }
        return null;
    }

    public void destroyDurableSubscriber(String clientId, String subscriberName) throws Exception {
        RemoveSubscriptionInfo info = new RemoveSubscriptionInfo();
        info.setClientId(clientId);
        info.setSubscriptionName(subscriberName);
        ConnectionContext context = new ConnectionContext();
        context.setBroker(broker);
        context.setClientId(clientId);
        broker.removeSubscription(context, info);
    }

    //  doc comment inherited from BrokerViewMBean
    public void reloadLog4jProperties() throws Throwable {

        // Avoid a direct dependency on log4j.. use reflection.
        try {
            ClassLoader cl = getClass().getClassLoader();
            Class logManagerClass = cl.loadClass("org.apache.log4j.LogManager");
            
            Method resetConfiguration = logManagerClass.getMethod("resetConfiguration", new Class[]{});
            resetConfiguration.invoke(null, new Object[]{});
            
            URL log4jprops = cl.getResource("log4j.properties");
            if (log4jprops != null) {
                Class propertyConfiguratorClass = cl.loadClass("org.apache.log4j.PropertyConfigurator");
                Method configure = propertyConfiguratorClass.getMethod("configure", new Class[]{URL.class});
                configure.invoke(null, new Object[]{log4jprops});
            }
        } catch (InvocationTargetException e) {
            throw e.getTargetException();
        }
    }
    

    public String getOpenWireURL() {
        String answer = brokerService.getTransportConnectorURIsAsMap().get("tcp");
        return answer != null ? answer : "";
    }

    public String getStompURL() {
        String answer = brokerService.getTransportConnectorURIsAsMap().get("stomp");
        return answer != null ? answer : "";
    }

    public String getSslURL() {
        String answer = brokerService.getTransportConnectorURIsAsMap().get("ssl");
        return answer != null ? answer : "";
    }

    public String getStompSslURL() {
        String answer = brokerService.getTransportConnectorURIsAsMap().get("stomp+ssl");
        return answer != null ? answer : "";
    }

    public String getVMURL() {
        URI answer = brokerService.getVmConnectorURI();
        return answer != null ? answer.toString() : "";
    }
    
    public String getDataDirectory() {
        File file = brokerService.getDataDirectoryFile();
        try {
            return file != null ? file.getCanonicalPath():"";
        } catch (IOException e) {
            return "";
        }
    }

    public ObjectName getJMSJobScheduler() {
        return this.jmsJobScheduler;
    }
    
    public void setJMSJobScheduler(ObjectName name) {
        this.jmsJobScheduler=name;
    }
}

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