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// Portions Copyright [2016] [Payara Foundation]
package com.sun.ejb.monitoring.stats;
import java.util.logging.Logger;
import com.sun.ejb.containers.EjbContainerUtilImpl;
import com.sun.ejb.containers.util.pool.AbstractPool;
import org.glassfish.external.probe.provider.StatsProviderManager;
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 Ejb Pool monitoring events.
*
* @author Marina Vatkina
*/
// TODO: find the right names
// v2: com.sun.appserv:application=MEjbApp,name=bean-pool,type=bean-pool,category=monitor,ejb-module=mejb_jar,server=server,stateless-session-bean=MEJBBean
// v3: amx:pp=/mon/server-mon[server],type=bean-pool-mon,name=??????????
@AMXMetadata(type="bean-pool-mon", group="monitoring", isSingleton=false)
@ManagedObject
@Description("Bean Pool Statistics")
public class EjbPoolStatsProvider {
private CountStatisticImpl createdStat = new CountStatisticImpl(
"TotalBeansCreated", "count", "Number of beans created in the associated pool");
private CountStatisticImpl destroyedStat = new CountStatisticImpl(
"TotalBeansDestroyed", "count", "Number of beans destroyed from the associated pool");
private CountStatisticImpl jmsStat = new CountStatisticImpl(
"JmsMaxMessagesLoad", "count",
"Provides the maximum number of messages to load into a JMS session, at a time.");
private BoundedRangeStatisticImpl beansInPool;
private BoundedRangeStatisticImpl threadsWaiting;
private static final Logger _logger = EjbContainerUtilImpl.getLogger();
private String appName = null;
private String moduleName = null;
private String beanName = null;
private boolean registered = false;
private AbstractPool delegate;
private long beanId;
public EjbPoolStatsProvider(AbstractPool delegate,
long beanId, String appName,
String moduleName, String beanName) {
this.delegate = delegate;
this.beanId = beanId;
this.appName = appName;
this.moduleName = moduleName;
this.beanName = beanName;
delegate.setInfo(appName, moduleName, beanName);
long now = System.currentTimeMillis();
beansInPool = new BoundedRangeStatisticImpl(
0, 0, 0, delegate.getMaxPoolSize(), delegate.getSteadyPoolSize(),
"NumBeansInPool", "count", "Number of EJBs in associated pool",
now, now);
threadsWaiting = new BoundedRangeStatisticImpl(
0, 0, 0, Long.MAX_VALUE, 0,
"NumThreadsWaiting", "count", "Number of threads waiting for free beans",
now, now);
}
public void register() {
String invokerId = EjbMonitoringUtils.getInvokerId(appName, moduleName, beanName);
String node = EjbMonitoringUtils.registerSubComponent(
appName, moduleName, beanName, "bean-pool", this, invokerId);
if (node != null) {
registered = true;
}
}
public void unregister() {
if (registered) {
registered = false;
StatsProviderManager.unregister(this);
}
}
@ManagedAttribute(id="numbeansinpool")
@Description( "Number of EJBs in associated pool")
public RangeStatistic getNumBeansInPool() {
beansInPool.setCurrent(delegate.getNumBeansInPool());
return beansInPool;
}
@ManagedAttribute(id="numthreadswaiting")
@Description( "Number of threads waiting for free beans")
public RangeStatistic getNumThreadsWaiting() {
threadsWaiting.setCurrent(delegate.getNumThreadsWaiting());
return threadsWaiting;
}
@ManagedAttribute(id="totalbeanscreated")
@Description( "Number of Beans created in associated pool")
public CountStatistic getTotalBeansCreated() {
return createdStat;
}
@ManagedAttribute(id="totalbeansdestroyed")
@Description( "Number of Beans destroyed in associated pool")
public CountStatistic getTotalBeansDestroyed() {
return destroyedStat;
}
@ManagedAttribute(id="jmsmaxmessagesload")
@Description( "Provides the maximum number of messages to load into a JMS session, at a time")
public CountStatistic getJmsMaxMessagesLoad() {
jmsStat.setCount(delegate.getJmsMaxMessagesLoad());
return jmsStat;
}
@ProbeListener("glassfish:ejb:pool:objectAddedEvent")
public void ejbObjectAddedEvent(
@ProbeParam("beanId") long beanId,
@ProbeParam("appName") String appName,
@ProbeParam("modName") String modName,
@ProbeParam("ejbName") String ejbName) {
if (this.beanId == beanId) {
createdStat.increment();
} else {
logWrongEvent(appName, modName, ejbName);
}
}
@ProbeListener("glassfish:ejb:pool:objectAddFailedEvent")
public void ejbObjectAddFailedEvent(
@ProbeParam("beanId") long beanId,
@ProbeParam("appName") String appName,
@ProbeParam("modName") String modName,
@ProbeParam("ejbName") String ejbName) {
if (this.beanId == beanId) {
createdStat.decrement();
} else {
logWrongEvent(appName, modName, ejbName);
}
}
@ProbeListener("glassfish:ejb:pool:objectDestroyedEvent")
public void ejbObjectDestroyedEvent(
@ProbeParam("beanId") long beanId,
@ProbeParam("appName") String appName,
@ProbeParam("modName") String modName,
@ProbeParam("ejbName") String ejbName) {
if (this.beanId == beanId) {
destroyedStat.increment();
} else {
logWrongEvent(appName, modName, ejbName);
}
}
private void logWrongEvent(String appName, String moduleName,
String beanName) {
_logger.fine("Recieved event for: [" + this.appName + ":" +
this.moduleName + ":" + this.beanName + "] but this provider is for [" +
appName + ":" + moduleName + ":" + beanName+ "]");
}
}
