Example usage for javax.management MBeanServerConnection isRegistered

Introduction

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

Prototype

public boolean isRegistered(ObjectName name) throws IOException;

Source Link

Document

Checks whether an MBean, identified by its object name, is already registered with the MBean server.

Usage

From source file:com.springsource.hq.plugin.tcserver.plugin.appmgmt.TomcatJmxApplicationManager.java

private void fetchAndApplySessionCount(Properties configProperties, String hostName, Application application,
        boolean tomcat7) throws PluginException {
    Integer sessionCount = 0;/*from w w w.  j  a  v a  2 s.  c  om*/

    String appObjectName = ObjectNameUtils.getManagerMBeanObjectNameForApplication(hostName, application,
            tomcat7);

    try {
        MBeanServerConnection mbsc = mxUtil.getMBeanServer(configProperties);
        boolean mbeanIsRegistered = mbsc.isRegistered(new ObjectName(appObjectName));

        if (mbeanIsRegistered) {
            sessionCount = (Integer) mxUtil.getValue(configProperties, appObjectName, "activeSessions");
        }

        application.setSessionCount(sessionCount);
    } catch (PluginException pe) {
        throw pe;
    } catch (Exception e) {
        throw createPluginException(e);
    }
}

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From source file:org.helios.collector.jmx.connection.AbstractMBeanServerConnectionFactory.java

/**
 * Determines if the passed ObjectName is registered
 * @param objectName/*w w  w. j  av  a  2s  .c o m*/
 * @return
 * @throws IOException
 */
@Override
@ManagedOperation
public boolean isRegistered(ObjectName objectName) throws IOException {
    validateConn();
    MBeanServerConnection conn = null;
    try {
        conn = getPooledConnection();
        return conn.isRegistered(objectName);
    } catch (MBeanServerConnectionFactoryException e) {
        throw new RuntimeException("Failed to get pooled connection", e);
    } finally {
        try {
            this.returnPooledConnection(conn);
        } catch (Exception e) {
            log.debug(e.getMessage());
        }
    }
}

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From source file:org.springframework.integration.jmx.DefaultMBeanObjectConverter.java

@Override
public Object convert(MBeanServerConnection connection, ObjectInstance instance) {
    Map<String, Object> attributeMap = new HashMap<String, Object>();

    try {/*from   w  w  w . jav a 2 s. c  o m*/
        ObjectName objName = instance.getObjectName();
        if (!connection.isRegistered(objName)) {
            return attributeMap;
        }

        MBeanInfo info = connection.getMBeanInfo(objName);
        MBeanAttributeInfo[] attributeInfos = info.getAttributes();

        for (MBeanAttributeInfo attrInfo : attributeInfos) {
            // we don't need to repeat name of this as an attribute
            if ("ObjectName".equals(attrInfo.getName()) || !this.filter.accept(objName, attrInfo.getName())) {
                continue;
            }

            Object value;
            try {
                value = connection.getAttribute(objName, attrInfo.getName());
            } catch (RuntimeMBeanException e) {
                // N.B. standard MemoryUsage MBeans will throw an exception when some
                // measurement is unsupported. Logging at trace rather than debug to
                // avoid confusion.
                if (log.isTraceEnabled()) {
                    log.trace("Error getting attribute '" + attrInfo.getName() + "' on '" + objName + "'", e);
                }

                // try to unwrap the exception somewhat; not sure this is ideal
                Throwable t = e;
                while (t.getCause() != null) {
                    t = t.getCause();
                }
                value = String.format("%s[%s]", t.getClass().getName(), t.getMessage());
            }

            attributeMap.put(attrInfo.getName(), checkAndConvert(value));
        }

    } catch (Exception e) {
        throw new IllegalArgumentException(e);
    }

    return attributeMap;
}

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From source file:org.xmatthew.spy2servers.component.spy.jmx.TomcatJmxSpyComponent.java

@Override
public void mscOnInterval(MBeanServerConnection mbsc) throws Exception {
    super.mscOnInterval(mbsc);

    if (webModuleSpy == null) {
        return;//from w ww. jav  a  2 s.com
    }
    Set<String> webModules = webModuleSpy.getWebModules();
    if (CollectionUtils.isBlankCollection(webModules)) {
        return;
    }

    String mbeanName;
    ObjectName objectName;
    String webStatus;
    boolean registered;
    for (String webModule : webModules) {
        mbeanName = String.format(WEB_MODULE_MBNAME, webModule);
        objectName = new ObjectName(mbeanName);
        registered = mbsc.isRegistered(objectName);
        if (webModuleSpy.spyWebModule(webModule, registered)) {
            if (registered) {
                webStatus = WEB_MODULE_ON;
            } else {
                webStatus = WEB_MODULE_OFF;
            }
            onSpy(createMessage(webModule, webStatus, Message.LV_ERROR, WEB_MODULE_STATUS,
                    new HashMap<String, Object>()));
        }
    }
}

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