Example usage for javax.management MBeanInfo getConstructors

Introduction

In this page you can find the example usage for javax.management MBeanInfo getConstructors.

Prototype

public MBeanConstructorInfo[] getConstructors() 

Source Link

Document

Returns the list of the public constructors of the MBean.

Usage

From source file:Utilities.java

/**
 * Prints info about a bean to a {@link VarOutputSink}.
 * //from  w  w w  .  ja v a2  s  .c o m
 * @param sink The {@link VarOutputSink} to which info will be sent
 * @param mbs The {@link MBeanServer} with respect to which the
 *          {@code objectName} is accessed
 * @param objectName The {@link ObjectName} that identifies this bean
 */
public static void printMBeanInfo(VarOutputSink sink, MBeanServer mbs, ObjectName objectName) {
    MBeanInfo info = getMBeanInfoSafely(sink, mbs, objectName);
    if (info == null) {
        return;
    }

    sink.echo("\nCLASSNAME: \t" + info.getClassName());
    sink.echo("\nDESCRIPTION: \t" + info.getDescription());
    sink.echo("\nATTRIBUTES");
    MBeanAttributeInfo[] attrInfo = info.getAttributes();
    sink.printVariable("attrcount", Integer.toString(attrInfo.length));
    if (attrInfo.length > 0) {
        for (int i = 0; i < attrInfo.length; i++) {
            sink.echo(" ** NAME: \t" + attrInfo[i].getName());
            sink.echo("    DESCR: \t" + attrInfo[i].getDescription());
            sink.echo("    TYPE: \t" + attrInfo[i].getType() + "\tREAD: " + attrInfo[i].isReadable()
                    + "\tWRITE: " + attrInfo[i].isWritable());
        }
    } else
        sink.echo(" ** No attributes **");
    sink.echo("\nCONSTRUCTORS");
    MBeanConstructorInfo[] constrInfo = info.getConstructors();
    for (int i = 0; i < constrInfo.length; i++) {
        sink.echo(" ** NAME: \t" + constrInfo[i].getName());
        sink.echo("    DESCR: \t" + constrInfo[i].getDescription());
        sink.echo("    PARAM: \t" + constrInfo[i].getSignature().length + " parameter(s)");
    }
    sink.echo("\nOPERATIONS");
    MBeanOperationInfo[] opInfo = info.getOperations();
    if (opInfo.length > 0) {
        for (int i = 0; i < opInfo.length; i++) {
            sink.echo(" ** NAME: \t" + opInfo[i].getName());
            sink.echo("    DESCR: \t" + opInfo[i].getDescription());
            sink.echo("    PARAM: \t" + opInfo[i].getSignature().length + " parameter(s)");
        }
    } else
        sink.echo(" ** No operations ** ");
    sink.echo("\nNOTIFICATIONS");
    MBeanNotificationInfo[] notifInfo = info.getNotifications();
    if (notifInfo.length > 0) {
        for (int i = 0; i < notifInfo.length; i++) {
            sink.echo(" ** NAME: \t" + notifInfo[i].getName());
            sink.echo("    DESCR: \t" + notifInfo[i].getDescription());
            String notifTypes[] = notifInfo[i].getNotifTypes();
            for (int j = 0; j < notifTypes.length; j++) {
                sink.echo("    TYPE: \t" + notifTypes[j]);
            }
        }
    } else
        sink.echo(" ** No notifications **");
}

---

From source file:org.apache.hadoop.hbase.metrics.MetricsMBeanBase.java

protected void init() {
    List<MBeanAttributeInfo> attributes = new ArrayList<MBeanAttributeInfo>();
    MBeanInfo parentInfo = super.getMBeanInfo();
    List<String> parentAttributes = new ArrayList<String>();
    for (MBeanAttributeInfo attr : parentInfo.getAttributes()) {
        attributes.add(attr);//from w w w . j  a  v a  2  s  .co m
        parentAttributes.add(attr.getName());
    }

    this.registryLength = this.registry.getMetricsList().size();

    for (MetricsBase metric : this.registry.getMetricsList()) {
        if (metric.getName() == null || parentAttributes.contains(metric.getName()))
            continue;

        // add on custom HBase metric types
        if (metric instanceof MetricsRate) {
            attributes.add(new MBeanAttributeInfo(metric.getName(), "java.lang.Float", metric.getDescription(),
                    true, false, false));
            extendedAttributes.put(metric.getName(), metric);
        } else if (metric instanceof MetricsString) {
            attributes.add(new MBeanAttributeInfo(metric.getName(), "java.lang.String", metric.getDescription(),
                    true, false, false));
            extendedAttributes.put(metric.getName(), metric);
            LOG.info("MetricsString added: " + metric.getName());
        } else if (metric instanceof MetricsHistogram) {

            String metricName = metric.getName() + MetricsHistogram.NUM_OPS_METRIC_NAME;
            attributes.add(new MBeanAttributeInfo(metricName, "java.lang.Long", metric.getDescription(), true,
                    false, false));
            extendedAttributes.put(metricName, metric);

            metricName = metric.getName() + MetricsHistogram.MIN_METRIC_NAME;
            attributes.add(new MBeanAttributeInfo(metricName, "java.lang.Long", metric.getDescription(), true,
                    false, false));
            extendedAttributes.put(metricName, metric);

            metricName = metric.getName() + MetricsHistogram.MAX_METRIC_NAME;
            attributes.add(new MBeanAttributeInfo(metricName, "java.lang.Long", metric.getDescription(), true,
                    false, false));
            extendedAttributes.put(metricName, metric);

            metricName = metric.getName() + MetricsHistogram.MEAN_METRIC_NAME;
            attributes.add(new MBeanAttributeInfo(metricName, "java.lang.Float", metric.getDescription(), true,
                    false, false));
            extendedAttributes.put(metricName, metric);

            metricName = metric.getName() + MetricsHistogram.STD_DEV_METRIC_NAME;
            attributes.add(new MBeanAttributeInfo(metricName, "java.lang.Float", metric.getDescription(), true,
                    false, false));
            extendedAttributes.put(metricName, metric);

            metricName = metric.getName() + MetricsHistogram.MEDIAN_METRIC_NAME;
            attributes.add(new MBeanAttributeInfo(metricName, "java.lang.Float", metric.getDescription(), true,
                    false, false));
            extendedAttributes.put(metricName, metric);

            metricName = metric.getName() + MetricsHistogram.SEVENTY_FIFTH_PERCENTILE_METRIC_NAME;
            attributes.add(new MBeanAttributeInfo(metricName, "java.lang.Float", metric.getDescription(), true,
                    false, false));
            extendedAttributes.put(metricName, metric);

            metricName = metric.getName() + MetricsHistogram.NINETY_FIFTH_PERCENTILE_METRIC_NAME;
            attributes.add(new MBeanAttributeInfo(metricName, "java.lang.Float", metric.getDescription(), true,
                    false, false));
            extendedAttributes.put(metricName, metric);

            metricName = metric.getName() + MetricsHistogram.NINETY_NINETH_PERCENTILE_METRIC_NAME;
            attributes.add(new MBeanAttributeInfo(metricName, "java.lang.Float", metric.getDescription(), true,
                    false, false));
            extendedAttributes.put(metricName, metric);
        }
        // else, its probably a hadoop metric already registered. Skip it.
    }

    LOG.info("new MBeanInfo");
    this.extendedInfo = new MBeanInfo(this.getClass().getName(), this.description,
            attributes.toArray(new MBeanAttributeInfo[0]), parentInfo.getConstructors(),
            parentInfo.getOperations(), parentInfo.getNotifications());
}

---