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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2016-2021 Payara Foundation 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://github.com/payara/Payara/blob/master/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 glassfish/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* The Payara Foundation designates this particular file as subject to the "Classpath"
* exception as provided by the Payara Foundation 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 fish.payara.nucleus.healthcheck.preliminary;
import fish.payara.monitoring.collect.MonitoringData;
import fish.payara.monitoring.collect.MonitoringDataCollector;
import fish.payara.monitoring.collect.MonitoringDataSource;
import fish.payara.monitoring.collect.MonitoringWatchCollector;
import fish.payara.monitoring.collect.MonitoringWatchSource;
import fish.payara.notification.healthcheck.HealthCheckResultEntry;
import fish.payara.notification.healthcheck.HealthCheckResultStatus;
import fish.payara.nucleus.healthcheck.HealthCheckResult;
import fish.payara.nucleus.healthcheck.HealthCheckWithThresholdExecutionOptions;
import fish.payara.nucleus.healthcheck.configuration.CpuUsageChecker;
import org.glassfish.api.StartupRunLevel;
import org.glassfish.hk2.runlevel.RunLevel;
import org.jvnet.hk2.annotations.Service;
import jakarta.annotation.PostConstruct;
import java.lang.management.ManagementFactory;
import java.lang.management.ThreadMXBean;
import java.text.DecimalFormat;
import java.util.concurrent.TimeUnit;
import static fish.payara.internal.notification.TimeUtil.prettyPrintDuration;
/**
* @author mertcaliskan
*/
@Service(name = "healthcheck-cpu")
@RunLevel(StartupRunLevel.VAL)
public class CpuUsageHealthCheck
extends BaseThresholdHealthCheck
implements MonitoringDataSource, MonitoringWatchSource {
private final CpuUsage healthCheck = new CpuUsage();
private final CpuUsage collect = new CpuUsage();
@PostConstruct
void postConstruct() {
postConstruct(this, CpuUsageChecker.class);
}
@Override
public HealthCheckWithThresholdExecutionOptions constructOptions(CpuUsageChecker checker) {
return super.constructThresholdOptions(checker);
}
@Override
protected String getDescription() {
return "healthcheck.description.cpu";
}
@Override
protected HealthCheckResult doCheckInternal() {
HealthCheckResult result = new HealthCheckResult();
try {
double percentage = healthCheck.percentage();
result.add(new HealthCheckResultEntry(decideOnStatusWithRatio(percentage),
"CPU%: " + new DecimalFormat("#.00").format(percentage)
+ ", Time CPU used: " + prettyPrintDuration(TimeUnit.NANOSECONDS.toMillis(healthCheck.getLastTimeDelta()))));
} catch (UnsupportedOperationException ex) {
result.add(new HealthCheckResultEntry(HealthCheckResultStatus.CHECK_ERROR, "JVM implementation or OS does not support getting CPU times"));
return result;
}
return result;
}
@Override
@MonitoringData(ns = "health", intervalSeconds = 4)
public void collect(MonitoringDataCollector collector) {
if (options != null && options.isEnabled()) {
collector.collect("CpuUsage", (int) collect.percentage());
}
}
@Override
public void collect(MonitoringWatchCollector collector) {
collectUsage(collector, "ns:health CpuUsage", "CPU Usage", 15, true);
}
private static final class CpuUsage {
private volatile long nanotimeBefore = System.nanoTime();
private volatile long totalCpuNanosBefore = 0;
private volatile long timeDelta;
CpuUsage() {
// make visible
}
double percentage() {
ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();
if (!threadBean.isCurrentThreadCpuTimeSupported()) {
throw new UnsupportedOperationException("CurrentThreadCpuTimeSupported not supported.");
}
long currentThreadId = Thread.currentThread().getId();
long totalCpuNanos = 0L;
for (long id : threadBean.getAllThreadIds()) {
if (id != currentThreadId) {
final long threadCpuTime = threadBean.getThreadCpuTime(id);
if (threadCpuTime >= 0L) {
totalCpuNanos += threadCpuTime;
}
}
}
long nanotime = System.nanoTime();
timeDelta = nanotime - nanotimeBefore;
long cpuTimeDelta = totalCpuNanos - totalCpuNanosBefore;
double percentage = Math.max(0d, Math.min(100d, 100d * cpuTimeDelta / timeDelta));
totalCpuNanosBefore = totalCpuNanos;
nanotimeBefore = nanotime;
return percentage;
}
long getLastTimeDelta() {
return timeDelta;
}
}
}