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// Portions Copyright [2016] [Payara Foundation]

package org.glassfish.ejb.mdb.monitoring.stats;

import com.sun.ejb.monitoring.stats.EjbMonitoringStatsProvider;
import org.glassfish.external.probe.provider.annotations.*;
import org.glassfish.external.statistics.*;
import org.glassfish.external.statistics.impl.*;
import org.glassfish.gmbal.*;

/**
 * Probe listener for the Message-Driven Beans part of the EJB monitoring events. 
 *
 * @author Marina Vatkina
 */
@AMXMetadata(type="message-driven-bean-mon", group="monitoring", isSingleton=false)
@ManagedObject
public class MessageDrivenBeanStatsProvider extends EjbMonitoringStatsProvider {

    private CountStatisticImpl messageCount = new CountStatisticImpl("MessageCount",
            "count", "Number of messages received for a message-driven bean");

    public MessageDrivenBeanStatsProvider(long beanId, String appName, String moduleName,
            String beanName) {
        super(beanId, appName, moduleName, beanName);
    }

    @ManagedAttribute(id="messagecount")
    @Description( "Number of messages received for a message-driven bean")
    public CountStatistic getMessageCount() {
        return messageCount;
    }

    @ProbeListener("glassfish:ejb:bean:messageDeliveredEvent")
    public void messageDeliveredEvent(
            @ProbeParam("beanId") long beanId,
            @ProbeParam("appName") String appName,
            @ProbeParam("modName") String modName,
            @ProbeParam("ejbName") String ejbName) {
        if (this.beanId == beanId) {
            log ("messageDeliveredEvent", "MessageDrivenBeanStatsProvider");
            messageCount.increment();
        }
    }

}