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Glassfish example source code file (WorkManagementStatsProvider.java)

This example Glassfish source code file (WorkManagementStatsProvider.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 - Glassfish tags/keywords

countstatistic, countstatisticimpl, description, managedattribute, number, number, probelistener, probelistener, probeparam, probeparam, rangestatistic, rangestatisticimpl, string, string

The Glassfish WorkManagementStatsProvider.java source code

/*
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 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 */

package com.sun.enterprise.connectors.work.monitor;

import org.glassfish.gmbal.AMXMetadata;
import org.glassfish.gmbal.ManagedObject;
import org.glassfish.gmbal.Description;
import org.glassfish.gmbal.ManagedAttribute;
import org.glassfish.external.statistics.impl.CountStatisticImpl;
import org.glassfish.external.statistics.impl.StatisticImpl;
import org.glassfish.external.statistics.impl.RangeStatisticImpl;
import org.glassfish.external.statistics.CountStatistic;
import org.glassfish.external.statistics.RangeStatistic;
import org.glassfish.external.probe.provider.annotations.ProbeListener;
import org.glassfish.external.probe.provider.annotations.ProbeParam;

/**
 * Provides the monitoring data for Connector Work Manager
 *
 * @author Jagadish Ramu
 */
@AMXMetadata(type="connector-service-mon", group="monitoring")
@ManagedObject
@Description("Connector Container Work Management Statistics")
public class WorkManagementStatsProvider {

    private String moduleName; //ra-name
    private final String DOTTED_NAME = "glassfish:jca:work-management:";

    public WorkManagementStatsProvider(String moduleName) {
        this.moduleName = moduleName;
    }

    long time = System.currentTimeMillis();

    private final CountStatisticImpl submittedWorkCount =
            new CountStatisticImpl("SubmittedWorkCount", StatisticImpl.UNIT_COUNT,
                    "Number of work objects submitted by a connector module for execution");
    private final CountStatisticImpl rejectedWorkCount =
            new CountStatisticImpl("RejectedWorkCount", StatisticImpl.UNIT_COUNT,
                    "Number of work objects rejected by the application server");
    private final CountStatisticImpl completedWorkCount =
            new CountStatisticImpl("CompletedWorkCount", StatisticImpl.UNIT_COUNT,
                    "Number of work objects completed execution");

    private final RangeStatisticImpl activeWorkCount =
            new RangeStatisticImpl(0, 0, 0, "ActiveWorkCount", StatisticImpl.UNIT_COUNT,
                    "Number of active work objects", time, time);

    private final RangeStatisticImpl waitQueueLength =
            new RangeStatisticImpl(0, 0, 0, "WaitQueueLength", StatisticImpl.UNIT_COUNT,
                    "Number of work objects waiting in the queue for execution", time, time);

    private final RangeStatisticImpl workRequestWaitTime =
            new RangeStatisticImpl(0, 0, 0, "WorkRequestWaitTime", StatisticImpl.UNIT_COUNT,
                    "Wait time of a work object before it gets executed", time, time);


    @ManagedAttribute(id = "submittedworkcount")
    @Description("Number of work objects submitted by a connector module for execution")
    public CountStatistic getSubmittedWorkCount() {
        return submittedWorkCount;
    }

    @ManagedAttribute(id = "rejectedworkcount")
    @Description("Number of work objects rejected by the application server")
    public CountStatistic getRejectedWorkCount() {
        return rejectedWorkCount;
    }

    @ManagedAttribute(id = "completedworkcount")
    @Description("Number of work objects completed execution")
    public CountStatistic getCompletedWorkCount() {
        return completedWorkCount;
    }

    @ManagedAttribute(id = "activeworkcount")
    @Description("Number of active work objects")
    public RangeStatistic getActiveWorkCount() {
        return activeWorkCount;
    }

    @ManagedAttribute(id = "waitqueuelength")
    @Description("Number of work objects waiting in the queue for execution")
    public RangeStatistic getWaitQueueLength() {
        return waitQueueLength;
    }

    @ManagedAttribute(id = "workrequestwaittime")
    @Description("Wait time of a work object before it gets executed")
    public RangeStatistic getWorkRequestWaitTime() {
        return workRequestWaitTime;
    }

    private boolean isValidEvent(String raName) {
        return (raName != null && moduleName.equals(raName));
    }


    @ProbeListener(DOTTED_NAME + "workSubmitted")
    public void workSubmitted(
            @ProbeParam("raName") String raName
    ) {
        if (isValidEvent(raName)) {
            submittedWorkCount.increment();
        }
    }

    @ProbeListener(DOTTED_NAME + "workQueued")
    public void workQueued(
            @ProbeParam("raName") String raName
    ) {
        if (isValidEvent(raName)) {
            synchronized (waitQueueLength) {
                waitQueueLength.setCurrent(waitQueueLength.getCurrent() + 1);
            }
        }
    }


    @ProbeListener(DOTTED_NAME + "workWaitedFor")
    public void workWaitedFor(
            @ProbeParam("raName") String raName,
            @ProbeParam("elapsedTime") long elapsedTime
    ) {
        if (isValidEvent(raName)) {
            workRequestWaitTime.setCurrent(elapsedTime);
        }
    }

    @ProbeListener(DOTTED_NAME + "workDequeued")
    public void workDequeued(
            @ProbeParam("raName") String raName
    ) {
        if (isValidEvent(raName)) {
            synchronized (waitQueueLength) {
                waitQueueLength.setCurrent(waitQueueLength.getCurrent() - 1);
            }
        }
    }

    @ProbeListener(DOTTED_NAME + "workProcessingStarted")
    public void workProcessingStarted(
            @ProbeParam("raName") String raName
    ) {
        if (isValidEvent(raName)) {
            synchronized (activeWorkCount) {
                activeWorkCount.setCurrent(activeWorkCount.getCurrent() + 1);
            }
        }
    }

    @ProbeListener(DOTTED_NAME + "workProcessingCompleted")
    public void workProcessingCompleted(
            @ProbeParam("raName") String raName
    ) {
        if (isValidEvent(raName)) {
            synchronized (activeWorkCount) {
                activeWorkCount.setCurrent(activeWorkCount.getCurrent() - 1);
            }
        }
    }

    @ProbeListener(DOTTED_NAME + "workProcessed")
    public void workProcessed(
            @ProbeParam("raName") String raName
    ) {
        if (isValidEvent(raName)) {
            completedWorkCount.increment();
        }
    }


    @ProbeListener(DOTTED_NAME + "workTimedOut")
    public void workTimedOut(
            @ProbeParam("raName") String raName
    ) {
        if (isValidEvent(raName)) {
            rejectedWorkCount.increment();
        }
    }
}

Other Glassfish examples (source code examples)

Here is a short list of links related to this Glassfish WorkManagementStatsProvider.java source code file:

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