com.microsoft.applicationinsights.internal.perfcounter.jvm.GCPerformanceCounter Maven / Gradle / Ivy

/*
 * ApplicationInsights-Java
 * Copyright (c) Microsoft Corporation
 * All rights reserved.
 *
 * MIT License
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this
 * software and associated documentation files (the ""Software""), to deal in the Software
 * without restriction, including without limitation the rights to use, copy, modify, merge,
 * publish, distribute, sublicense, and/or sell copies of the Software, and to permit
 * persons to whom the Software is furnished to do so, subject to the following conditions:
 * The above copyright notice and this permission notice shall be included in all copies or
 * substantial portions of the Software.
 * THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
 * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

package com.microsoft.applicationinsights.internal.perfcounter.jvm;

import java.util.List;
import java.lang.management.GarbageCollectorMXBean;
import java.lang.management.ManagementFactory;

import com.microsoft.applicationinsights.TelemetryClient;
import com.microsoft.applicationinsights.internal.perfcounter.PerformanceCounter;
import com.microsoft.applicationinsights.telemetry.MetricTelemetry;

/**
 * The class reports GC related data
 *
 * Created by gupele on 8/8/2016.
 */
public final class GCPerformanceCounter implements PerformanceCounter {
    public final static String NAME = "GC";

    private static final String GC_TOTAL_COUNT = "GC Total Count";
    private static final String GC_TOTAL_TIME = "GC Total Time";

    private long currentTotalCount = 0;
    private long currentTotalTime = 0;

    @Override
    public String getId() {
        return "GCPerformanceCounter";
    }

    @Override
    public void report(TelemetryClient telemetryClient) {
        synchronized (this) {
            List gcs = ManagementFactory.getGarbageCollectorMXBeans();
            if (gcs == null) {
                return;
            }

            long totalCollectionCount = 0;
            long totalCollectionTime = 0;
            for (GarbageCollectorMXBean gc : gcs) {
                long gcCollectionCount = gc.getCollectionCount();
                if (gcCollectionCount > 0) {
                    totalCollectionCount += gcCollectionCount;
                }

                long gcCollectionTime = gc.getCollectionTime();
                if (gcCollectionTime > 0) {
                    totalCollectionTime += gcCollectionTime;
                }
            }

            long countToReport = totalCollectionCount - currentTotalCount;
            long timeToReport = totalCollectionTime - currentTotalTime;

            currentTotalCount = totalCollectionCount;
            currentTotalTime = totalCollectionTime;

            MetricTelemetry mtTotalCount = new MetricTelemetry(GC_TOTAL_COUNT, countToReport);
            MetricTelemetry mtTotalTime = new MetricTelemetry(GC_TOTAL_TIME, timeToReport);

            mtTotalCount.markAsCustomPerfCounter();
            mtTotalCount.markAsCustomPerfCounter();

            telemetryClient.track(mtTotalCount);
            telemetryClient.track(mtTotalTime);
        }
    }
}