Glassfish example source code file (ServerRuntimeStatsProvider.java)

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Java - Glassfish tags/keywords

description, description, failed, java, java, managedattribute, managedattribute, management, running_state, running_state, runtime, serverruntimestatsprovider, starting_state, statistics, stopped_state, util

The Glassfish ServerRuntimeStatsProvider.java source code

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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
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package org.glassfish.admin.monitor.jvm;

import java.lang.management.ManagementFactory;
import java.lang.management.RuntimeMXBean;
import java.util.List;
import org.glassfish.external.statistics.CountStatistic;
import org.glassfish.external.statistics.impl.CountStatisticImpl;
import org.glassfish.external.statistics.StringStatistic;
import org.glassfish.external.statistics.impl.StringStatisticImpl;
import org.glassfish.gmbal.AMXMetadata;
import org.glassfish.gmbal.Description;
import org.glassfish.gmbal.ManagedAttribute;
import org.glassfish.gmbal.ManagedObject;

/* server.runtime */
@AMXMetadata(type="server-runtime-mon", group="monitoring", isSingleton=true)
@ManagedObject
@Description( "Server Runtime Statistics" )
public class ServerRuntimeStatsProvider {
    
    private final RuntimeMXBean rtBean = ManagementFactory.getRuntimeMXBean();

    public static final int STARTING_STATE = 0;
    public static final int RUNNING_STATE = 1;
    public static final int STOPPING_STATE = 2;
    public static final int STOPPED_STATE = 3;
    public static final int FAILED_STATE = 4;
    private int state = STOPPED_STATE;

    @ManagedAttribute(id="uptime")
    @Description( "uptime of the Java virtual machine in milliseconds" )
    public long getUptime() {
        return rtBean.getUptime();
    }

    @ManagedAttribute(id="starttime")
    @Description( "start time of the Java virtual machine" )
    public long getStartTime() {
        return rtBean.getStartTime();
    }

    @ManagedAttribute(id="state")
    @Description( "state of the server such as Running, Stopped, Failed" )
    public synchronized long getState() {
        if (rtBean != null) {
            return RUNNING_STATE;
        }
        return state;
    }

    //TODO: set state based on server events
    public synchronized void setState(int state) {
        this.state = state;
    }

}