Example usage for javax.management MBeanServerConnection getAttributes

Introduction

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

Prototype

public AttributeList getAttributes(ObjectName name, String[] attributes)
        throws InstanceNotFoundException, ReflectionException, IOException;

Source Link

Document

Retrieves the values of several attributes of a named MBean.

Usage

From source file:com.googlecode.jmxtrans.model.Query.java

public Iterable<Result> fetchResults(MBeanServerConnection mbeanServer, ObjectName queryName)
        throws InstanceNotFoundException, IntrospectionException, ReflectionException, IOException {
    MBeanInfo info = mbeanServer.getMBeanInfo(queryName);
    ObjectInstance oi = mbeanServer.getObjectInstance(queryName);

    List<String> attributes;
    if (attr.isEmpty()) {
        attributes = new ArrayList<>();
        for (MBeanAttributeInfo attrInfo : info.getAttributes()) {
            attributes.add(attrInfo.getName());
        }//from   w  w w. j a v  a  2s  . com
    } else {
        attributes = attr;
    }

    try {
        if (!attributes.isEmpty()) {
            logger.debug("Executing queryName [{}] from query [{}]", queryName.getCanonicalName(), this);

            AttributeList al = mbeanServer.getAttributes(queryName,
                    attributes.toArray(new String[attributes.size()]));

            return new JmxResultProcessor(this, oi, al.asList(), info.getClassName(), queryName.getDomain())
                    .getResults();
        }
    } catch (UnmarshalException ue) {
        if ((ue.getCause() != null) && (ue.getCause() instanceof ClassNotFoundException)) {
            logger.debug("Bad unmarshall, continuing. This is probably ok and due to something like this: "
                    + "http://ehcache.org/xref/net/sf/ehcache/distribution/RMICacheManagerPeerListener.html#52",
                    ue.getMessage());
        } else {
            throw ue;
        }
    }
    return ImmutableList.of();
}

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From source file:dk.netarkivet.harvester.harvesting.controller.BnfHeritrixController.java

/**
 * Executes a JMX call (attribute read or single operation) on a given bean.
 *
 * @param beanName//  w ww. j  a  v  a 2s  .  c  o  m
 *            the MBean name.
 * @param retry
 *            if true, will retry a number of times if the operation fails.
 * @param isOperation
 *            true if the call is an operation, false if it's an attribute
 *            read.
 * @param names
 *            name of operation or name of attributes
 * @param args
 *            optional arguments for operations
 * @return the object returned by the distant MBean
 */
private Object jmxCall(String beanName, boolean retry, boolean isOperation, String[] names, String... args) {

    MBeanServerConnection connection = getMBeanServerConnection();

    int maxTries = 1;
    if (retry) {
        maxTries = jmxMaxTries;
    }
    int tries = 0;
    Throwable lastException;
    do {
        tries++;
        try {
            if (isOperation) {
                final String[] signature = new String[args.length];
                Arrays.fill(signature, String.class.getName());
                return connection.invoke(JMXUtils.getBeanName(beanName), names[0], args, signature);
            } else {
                return connection.getAttributes(JMXUtils.getBeanName(beanName), names).asList();
            }
        } catch (IOException e) {
            lastException = e;
        } catch (ReflectionException e) {
            lastException = e;
        } catch (InstanceNotFoundException e) {
            lastException = e;
        } catch (MBeanException e) {
            lastException = e;
        }
        log.debug("Attempt " + tries + " out of " + maxTries + " attempts to make this jmxCall failed ");
        if (tries < maxTries) {
            TimeUtils.exponentialBackoffSleep(tries);
        }

    } while (tries < maxTries);

    String msg = "";
    if (isOperation) {
        msg = "Failed to execute " + names[0] + " with args " + Arrays.toString(args) + " on " + beanName;
    } else {
        msg = "Failed to read attributes " + Arrays.toString(names) + " of " + beanName;
    }

    if (lastException != null) {
        msg += ", last exception was " + lastException.getClass().getName();
    }
    msg += " after " + tries + " attempts";
    throw new IOFailure(msg, lastException);
}

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

/**
 * Returns the values of the passed attribute names
 * @param objectName//from w ww . jav  a 2  s. com
 * @param attributeNames
 * @return
 * @throws InstanceNotFoundException
 * @throws ReflectionException
 * @throws IOException
 */
@Override
@ManagedOperation
public AttributeList getAttributes(ObjectName objectName, String[] attributeNames)
        throws InstanceNotFoundException, ReflectionException, IOException {
    validateConn();
    MBeanServerConnection conn = null;
    try {
        conn = getPooledConnection();
        return conn.getAttributes(objectName, attributeNames);
    } 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.hyperic.hq.product.jmx.MxQuery.java

public void getAttributes(MBeanServerConnection mServer, ObjectName name, String[] attrs)
        throws PluginException {

    if (attrs.length == 0) {
        return;/*from w w w  . j  a v  a 2 s . c  o m*/
    }

    AttributeList mBeanAttrs;

    try {
        mBeanAttrs = mServer.getAttributes(name, attrs);
    } catch (RemoteException e) {
        throw new PluginException("Cannot connect to server", e);
    } catch (InstanceNotFoundException e) {
        throw new PluginException("Cannot find MBean [" + name + "]", e);
    } catch (ReflectionException e) {
        throw new PluginException("MBean reflection exception", e);
    } catch (IOException e) {
        throw new PluginException("Cannot connect to server", e);
    }

    for (Iterator it = mBeanAttrs.iterator(); it.hasNext();) {
        Attribute attr = (Attribute) it.next();
        Object value = attr.getValue();
        if (value != null) {
            setAttribute(attr.getName(), value.toString());
        }
    }
}

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