Example usage for javax.management MBeanServerConnection getMBeanCount

Introduction

In this page you can find the example usage for javax.management MBeanServerConnection getMBeanCount.

Prototype

public Integer getMBeanCount() throws IOException;

Source Link

Document

Returns the number of MBeans registered in the MBean server.

Usage

From source file:com.example.Client.java

public static void main(String[] args) throws Exception {
    // Create an RMI connector client and
    // connect it to the RMI connector server
    ///*from   w  w  w. j a  v  a2s.  c om*/
    echo("\nCreate an RMI connector client and " + "connect it to the RMI connector server");
    JMXServiceURL url = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://:9999/jmxrmi");
    JMXConnector jmxc = JMXConnectorFactory.connect(url, null);

    // Create listener
    //
    ClientListener listener = new ClientListener();

    // Get an MBeanServerConnection
    //
    echo("\nGet an MBeanServerConnection");
    MBeanServerConnection mbsc = jmxc.getMBeanServerConnection();
    waitForEnterPressed();

    // Get domains from MBeanServer
    //
    echo("\nDomains:");
    String domains[] = mbsc.getDomains();
    Arrays.sort(domains);
    for (String domain : domains) {
        echo("\tDomain = " + domain);
    }
    waitForEnterPressed();

    // Get MBeanServer's default domain
    //
    echo("\nMBeanServer default domain = " + mbsc.getDefaultDomain());

    // Get MBean count
    //
    echo("\nMBean count = " + mbsc.getMBeanCount());

    // Query MBean names
    //
    echo("\nQuery MBeanServer MBeans:");
    Set<ObjectName> names = new TreeSet<ObjectName>(mbsc.queryNames(null, null));
    for (ObjectName name : names) {
        echo("\tObjectName = " + name);
    }
    waitForEnterPressed();

    // ----------------------
    // Manage the Hello MBean
    // ----------------------

    echo("\n>>> Perform operations on Hello MBean <<<");

    // Construct the ObjectName for the Hello MBean
    //
    ObjectName mbeanName = new ObjectName("com.example:type=Hello");

    // Create a dedicated proxy for the MBean instead of
    // going directly through the MBean server connection
    //
    HelloMBean mbeanProxy = JMX.newMBeanProxy(mbsc, mbeanName, HelloMBean.class, true);

    // Add notification listener on Hello MBean
    //
    echo("\nAdd notification listener...");
    mbsc.addNotificationListener(mbeanName, listener, null, null);

    // Get CacheSize attribute in Hello MBean
    //
    echo("\nCacheSize = " + mbeanProxy.getCacheSize());

    // Set CacheSize attribute in Hello MBean
    // Calling "reset" makes the Hello MBean emit a
    // notification that will be received by the registered
    // ClientListener.
    //
    mbeanProxy.setCacheSize(150);

    // Sleep for 2 seconds to have time to receive the notification
    //
    echo("\nWaiting for notification...");
    sleep(2000);

    // Get CacheSize attribute in Hello MBean
    //
    echo("\nCacheSize = " + mbeanProxy.getCacheSize());

    // Invoke "sayHello" in Hello MBean
    //
    echo("\nInvoke sayHello() in Hello MBean...");
    mbeanProxy.sayHello();

    // Invoke "add" in Hello MBean
    //
    echo("\nInvoke add(2, 3) in Hello MBean...");
    echo("\nadd(2, 3) = " + mbeanProxy.add(2, 3));

    waitForEnterPressed();

    // ------------------------------
    // Manage the QueueSampler MXBean
    // ------------------------------

    echo("\n>>> Perform operations on QueueSampler MXBean <<<");

    // Construct the ObjectName for the QueueSampler MXBean
    //
    ObjectName mxbeanName = new ObjectName("com.example:type=QueueSampler");

    // Create a dedicated proxy for the MXBean instead of
    // going directly through the MBean server connection
    //
    QueueSamplerMXBean mxbeanProxy = JMX.newMXBeanProxy(mbsc, mxbeanName, QueueSamplerMXBean.class);

    // Get QueueSample attribute in QueueSampler MXBean
    //
    QueueSample queue1 = mxbeanProxy.getQueueSample();
    echo("\nQueueSample.Date = " + queue1.getDate());
    echo("QueueSample.Head = " + queue1.getHead());
    echo("QueueSample.Size = " + queue1.getSize());

    // Invoke "clearQueue" in QueueSampler MXBean
    //
    echo("\nInvoke clearQueue() in QueueSampler MXBean...");
    mxbeanProxy.clearQueue();

    // Get QueueSample attribute in QueueSampler MXBean
    //
    QueueSample queue2 = mxbeanProxy.getQueueSample();
    echo("\nQueueSample.Date = " + queue2.getDate());
    echo("QueueSample.Head = " + queue2.getHead());
    echo("QueueSample.Size = " + queue2.getSize());

    waitForEnterPressed();

    // Close MBeanServer connection
    //
    echo("\nClose the connection to the server");
    jmxc.close();
    echo("\nBye! Bye!");
}

---

From source file:org.opennms.features.jmxconfiggenerator.jmxconfig.JmxDatacollectionConfiggenerator.java

public MBeanServerConnection createMBeanServerConnection(JMXConnector jmxConnector) throws IOException {
    MBeanServerConnection jmxServerConnection = jmxConnector.getMBeanServerConnection();
    logger.debug("jmxServerConnection: '{}'", jmxServerConnection);
    logger.debug("count: " + jmxServerConnection.getMBeanCount());
    return jmxServerConnection;
}

---

From source file:org.opennms.jmxconfiggenerator.jmxconfig.JmxDatacollectionConfiggenerator.java

public MBeanServerConnection createMBeanServerConnection(String hostName, String port, String username,
        String password, Boolean ssl, Boolean jmxmp) throws MalformedURLException, IOException {
    JMXConnector jmxConnector = getJmxConnector(hostName, port, username, password, ssl, jmxmp);
    MBeanServerConnection jmxServerConnection = jmxConnector.getMBeanServerConnection();
    logger.debug("jmxServerConnection: '{}'", jmxServerConnection);
    logger.debug("count: " + jmxServerConnection.getMBeanCount());
    return jmxServerConnection;
}

---

From source file:org.opennms.tools.jmxconfiggenerator.jmxconfig.JmxDatacollectionConfiggenerator.java

public MBeanServerConnection createMBeanServerConnection(String hostName, String port, String username,
        String password, Boolean ssl, Boolean jmxmp) throws MalformedURLException, IOException {
    JMXConnector jmxConnector = getJmxConnector(hostName, port, username, password, ssl, jmxmp);
    MBeanServerConnection jmxServerConnection = jmxConnector.getMBeanServerConnection();
    logger.debug("jmxServerConnection: '{}'", jmxServerConnection);
    logger.debug("count: " + jmxServerConnection.getMBeanCount());
    return jmxServerConnection;
    //TODO tak fragen, wie es aussieht mit dem Schlieen der Connection -> erledigt sich wahrscheinlich, da CLI
}

---