it.damore.tomee.envmonitor.services.EnvMonitorService.java Source code

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Here is the source code for it.damore.tomee.envmonitor.services.EnvMonitorService.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 it.damore.tomee.envmonitor.services;

import it.damore.tomee.envmonitor.entities.EnvironmentConfig;
import it.damore.tomee.envmonitor.entities.LocalMemoryMXBean;
import it.damore.tomee.envmonitor.entities.LocalOperatingSystemMXBean;
import it.damore.tomee.envmonitor.entities.LocalRuntimeMXBean;

import java.lang.management.ManagementFactory;
import java.lang.management.MemoryMXBean;
import java.lang.management.OperatingSystemMXBean;
import java.lang.management.RuntimeMXBean;
import java.lang.reflect.InvocationTargetException;
import java.util.logging.Logger;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

import org.apache.commons.beanutils.BeanUtils;

@Path("env")
public class EnvMonitorService {

    Logger logger = Logger.getLogger(EnvMonitorService.class.getName());

    //         private static Logger logger = LoggerFactory.getLogger(ZkUtils.class);

    @GET
    @Path("monitor")
    @Produces({ MediaType.APPLICATION_JSON })
    public EnvironmentConfig getEnvConfig() throws IllegalAccessException, InvocationTargetException {
        logger.info("received a request...");

        int mb = 1024 * 1024;
        //Getting the runtime reference from system
        Runtime runtime = Runtime.getRuntime();

        EnvironmentConfig b = new EnvironmentConfig();
        b.setMaxMemory(runtime.maxMemory() / mb);
        b.setFreeMemory(runtime.freeMemory() / mb);
        b.setTotalMemory(runtime.totalMemory() / mb);
        b.setSystemProperties(System.getProperties());

        RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();
        LocalRuntimeMXBean myRuntimeMXBean = new LocalRuntimeMXBean();
        BeanUtils.copyProperties(myRuntimeMXBean, runtimeMXBean);
        b.setRuntimeMXBean(myRuntimeMXBean);

        MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
        LocalMemoryMXBean myMemoryMXBean = new LocalMemoryMXBean();
        myMemoryMXBean.setHeapMemoryUsage(memoryMXBean.getHeapMemoryUsage());
        myMemoryMXBean.setNonHeapMemoryUsage(memoryMXBean.getNonHeapMemoryUsage());
        myMemoryMXBean.setObjectPendingFinalizationCount(memoryMXBean.getObjectPendingFinalizationCount());
        b.setMemoryMXBean(myMemoryMXBean);

        OperatingSystemMXBean operatingSystemMXBean = ManagementFactory.getOperatingSystemMXBean();
        LocalOperatingSystemMXBean myOperatingSystemMXBean = new LocalOperatingSystemMXBean();
        BeanUtils.copyProperties(myOperatingSystemMXBean, operatingSystemMXBean);
        b.setOperatingSystemMXBean(myOperatingSystemMXBean);

        return b;
    }

}