org.apache.stratos.cartridge.agent.statistics.publisher.HealthStatisticsReader.java Source code

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Here is the source code for org.apache.stratos.cartridge.agent.statistics.publisher.HealthStatisticsReader.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.stratos.cartridge.agent.statistics.publisher;

import com.sun.management.OperatingSystemMXBean;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.stratos.cartridge.agent.config.CartridgeAgentConfiguration;
import org.apache.stratos.cartridge.agent.util.CartridgeAgentUtils;

import java.lang.management.ManagementFactory;

/**
 * Health statistics reader.
 */
public class HealthStatisticsReader {
    private static final int MB = 1024 * 1024;
    private static final Log log = LogFactory.getLog(HealthStatisticsReader.class);

    public static double getMemoryConsumption() {
        OperatingSystemMXBean osBean = (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();
        double totalMemory = (double) (osBean.getTotalPhysicalMemorySize() / MB);
        double usedMemory = (double) ((totalMemory - (osBean.getFreePhysicalMemorySize() / MB)));

        if (log.isDebugEnabled()) {
            log.debug(
                    "Calculating memory consumption: [totalMemory] " + totalMemory + " [usedMemory] " + usedMemory);
        }
        double memoryConsumption = (usedMemory / totalMemory) * 100;
        if (log.isDebugEnabled()) {
            log.debug("Calculating memory consumption: [percentage] " + memoryConsumption);
        }
        return memoryConsumption;
    }

    public static double getLoadAverage() {
        double loadAvg = (double) ManagementFactory.getOperatingSystemMXBean().getSystemLoadAverage();
        // assume system cores = available cores to JVM
        int cores = ManagementFactory.getOperatingSystemMXBean().getAvailableProcessors();

        if (log.isDebugEnabled()) {
            log.debug("Calculating load average consumption: [loadAverage] " + loadAvg + " [cores] " + cores);
        }

        double loadAvgPercentage = (loadAvg / cores) * 100;
        if (log.isDebugEnabled()) {
            log.debug("Calculating load average consumption: [percentage] " + loadAvgPercentage);
        }
        return loadAvgPercentage;
    }

    public static boolean allPortsActive() {
        return CartridgeAgentUtils.checkPortsActive(CartridgeAgentConfiguration.getInstance().getListenAddress(),
                CartridgeAgentConfiguration.getInstance().getPorts());
    }
}