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/*
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*
* Copyright (c) 2010-2017 Oracle and/or its affiliates. All rights reserved.
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* and Distribution License("CDDL") (collectively, the "License"). You
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* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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*/
// Portions Copyright [2016-2017] [Payara Foundation]
package com.sun.enterprise.resource.pool.monitor;
import org.glassfish.external.probe.provider.annotations.ProbeListener;
import org.glassfish.external.probe.provider.annotations.ProbeParam;
import org.glassfish.external.statistics.CountStatistic;
import org.glassfish.external.statistics.RangeStatistic;
import org.glassfish.external.statistics.impl.CountStatisticImpl;
import org.glassfish.external.statistics.impl.RangeStatisticImpl;
import org.glassfish.external.statistics.impl.StatisticImpl;
import org.glassfish.gmbal.AMXMetadata;
import org.glassfish.gmbal.Description;
import org.glassfish.gmbal.ManagedAttribute;
import org.glassfish.gmbal.ManagedObject;
import org.glassfish.resourcebase.resources.api.PoolInfo;
/**
* StatsProvider object for Connector Connection pool monitoring
* grouped by application names.
*
* Implements various events related to connector connection pool monitoring
* and provides objects to the calling modules that retrieve monitoring
* information.
*
* @author Shalini M
*/
@AMXMetadata(type="connector-connection-pool-app-mon", group="monitoring")
@ManagedObject
@Description("Connector Connection Pool Application based Statistics")
public class ConnectorConnPoolAppStatsProvider {
private RangeStatisticImpl numConnUsed = new RangeStatisticImpl(
0, 0, 0,
"NumConnUsed", StatisticImpl.UNIT_COUNT, "Provides connection usage " +
"statistics. The total number of connections that are currently being " +
"used, as well as information about the maximum number of connections " +
"that were used (the high water mark).",
System.currentTimeMillis(), System.currentTimeMillis());
private CountStatisticImpl numConnAcquired = new CountStatisticImpl(
"NumConnAcquired", StatisticImpl.UNIT_COUNT, "Number of logical " +
"connections acquired from the pool.");
private CountStatisticImpl numConnReleased = new CountStatisticImpl(
"NumConnReleased", StatisticImpl.UNIT_COUNT, "Number of logical " +
"connections released to the pool.");
private static final String JCA_APP_PROBE_LISTENER = "glassfish:connector-pool:applications:";
private String poolName;
private String appName;
public ConnectorConnPoolAppStatsProvider(PoolInfo poolInfo, String appName) {
this.poolName = poolInfo.getName();
this.appName = appName;
}
public String getPoolName() {
return this.poolName;
}
public String getAppName() {
return this.appName;
}
@ProbeListener(JCA_APP_PROBE_LISTENER + "decrementConnectionUsedEvent")
public void decrementConnectionUsedEvent(
@ProbeParam("poolName") String poolName,
@ProbeParam("appName") String appName) {
// handle the num conn used decrement event
if((poolName != null) && (poolName.equals(this.poolName))) {
if (appName != null && appName.equals(this.appName)) {
//Decrement numConnUsed counter
synchronized (numConnUsed) {
long numConnUsedSafe = (numConnUsed.getCurrent() >= 0) ? numConnUsed.getCurrent() - 1 : 0;
numConnUsed.setCurrent(numConnUsedSafe);
}
}
}
}
/**
* Connection used event
* @param poolName
* @param appName
*/
@ProbeListener(JCA_APP_PROBE_LISTENER + "connectionUsedEvent")
public void connectionUsedEvent(
@ProbeParam("poolName") String poolName,
@ProbeParam("appName") String appName) {
// handle the connection used event
if((poolName != null) && (poolName.equals(this.poolName))) {
if (appName != null && appName.equals(this.appName)) {
//increment numConnUsed
synchronized (numConnUsed) {
numConnUsed.setCurrent(numConnUsed.getCurrent() + 1);
}
}
}
}
/**
* When a connection is acquired increment counter
*/
@ProbeListener(JCA_APP_PROBE_LISTENER + "connectionAcquiredEvent")
public void connectionAcquiredEvent(
@ProbeParam("poolName") String poolName,
@ProbeParam("appName") String appName) {
if((poolName != null) && (poolName.equals(this.poolName))) {
if (appName != null && appName.equals(this.appName)) {
numConnAcquired.increment();
}
}
}
/**
* When a connection is released increment counter
*/
@ProbeListener(JCA_APP_PROBE_LISTENER + "connectionReleasedEvent")
public void connectionReleasedEvent(
@ProbeParam("poolName") String poolName,
@ProbeParam("appName") String appName) {
if((poolName != null) && (poolName.equals(this.poolName))) {
if (appName != null && appName.equals(this.appName)) {
numConnReleased.increment();
}
}
}
@ManagedAttribute(id="numconnused")
public RangeStatistic getNumConnUsed() {
return numConnUsed;
}
@ManagedAttribute(id="numconnacquired")
public CountStatistic getNumConnAcquired() {
return numConnAcquired;
}
@ManagedAttribute(id="numconnreleased")
public CountStatistic getNumConnReleased() {
return numConnReleased;
}
}