kieker.monitoring.sampler.oshi.samplers.CPUsDetailedPercSampler Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of kieker Show documentation
Kieker: Application Performance Monitoring and Dynamic Software Analysis
There is a newer version: 2.0.2
/***************************************************************************
 * Copyright 2022 Kieker Project (http://kieker-monitoring.net)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ***************************************************************************/

package kieker.monitoring.sampler.oshi.samplers;

import kieker.common.record.system.CPUUtilizationRecord;
import kieker.monitoring.core.controller.IMonitoringController;
import kieker.monitoring.core.signaturePattern.SignatureFactory;
import kieker.monitoring.timer.ITimeSource;

import oshi.hardware.CentralProcessor;
import oshi.hardware.HardwareAbstractionLayer;

/**
 * Logs detailed utilization statistics for each CPU in the system, retrieved
 * from {@link CentralProcessor}, as {@link CPUUtilizationRecord}s via
 * {@link kieker.monitoring.core.controller.IMonitoringController#newMonitoringRecord(kieker.common.record.IMonitoringRecord)}
 * .
 *
 * @author Matteo Sassano
 * @since 1.14
 *
 */
public final class CPUsDetailedPercSampler extends AbstractOshiSampler {

	/**
	 * Converter for each CPU core. A converter converts tick values to relative
	 * percentage values.
	 */
	private CPUsDetailedPercConverter[] converters;

	/**
	 * Constructs a new {@link AbstractOshiSampler} with given
	 * {@link HardwareAbstractionLayer} instance used to retrieve the sensor data.
	 * Users should use the factory method
	 * {@link kieker.monitoring.sampler.oshi.OshiSamplerFactory#createSensorCPUsDetailedPerc()}
	 * to acquire an instance rather than calling this constructor directly.
	 *
	 * @param hardwareAbstractionLayer
	 *            The {@link HardwareAbstractionLayer} which will be used to
	 *            retrieve the data.
	 */
	public CPUsDetailedPercSampler(final HardwareAbstractionLayer hardwareAbstractionLayer) {
		super(hardwareAbstractionLayer);
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void sample(final IMonitoringController monitoringController) {
		if (!monitoringController.isMonitoringEnabled() || !monitoringController.isProbeActivated(SignatureFactory.createCPUSignature())) {
			return;
		}
		final CentralProcessor centralProcessor = this.hardwareAbstractionLayer.getProcessor();
		final long[][] processorLoadTicks = centralProcessor.getProcessorCpuLoadTicks();
		if (this.converters == null) {
			this.converters = new CPUsDetailedPercConverter[processorLoadTicks.length];
			for (int i = 0; i < this.converters.length; i++) {
				this.converters[i] = new CPUsDetailedPercConverter(i);
			}
		}
		final ITimeSource timesource = monitoringController.getTimeSource();
		for (int i = 0; i < processorLoadTicks.length; i++) {
			if (monitoringController.isProbeActivated(SignatureFactory.createCPUSignature(i))) {
				final CPUsDetailedPercConverter converter = this.converters[i];
				final long[] plt = processorLoadTicks[i];
				converter.passNewProcessorLoadTicks(plt);
				converter.convertToPercentage();

				final double system = converter.getSystemPerc();
				final double wait = converter.getWaitPerc();
				final double nice = converter.getNicePerc();
				final double idle = converter.getIdlePerc();
				final double user = converter.getUserPerc();
				final double irq = converter.getIrqPerc();
				final double combined = centralProcessor.getProcessorCpuLoad(10)[i];

				final CPUUtilizationRecord r = new CPUUtilizationRecord(timesource.getTime(),
						monitoringController.getHostname(), Integer.toString(i), user, system, wait, nice, irq,
						combined, idle);
				monitoringController.newMonitoringRecord(r);
			}
		}
	}
}