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// Portions Copyright [2019] Payara Foundation and/or affiliates
package com.sun.enterprise.resource.pool;
import com.sun.enterprise.connectors.ConnectorRuntime;
import com.sun.enterprise.resource.listener.PoolLifeCycleListener;
import org.glassfish.resourcebase.resources.api.PoolInfo;
import java.util.ArrayList;
import java.util.List;
/**
* Implementation of PoolLifeCycleListener to listen to events related to a
* connection pool. The registry allows multiple listeners (ex: pool monitoring)
* to listen to the pool's lifecyle. Maintains a list of listeners for this pool
* identified by poolName.
*
* @author Shalini M
*/
public class PoolLifeCycleListenerRegistry implements PoolLifeCycleListener {
//List of listeners
protected List poolListenersList;
//name of the pool for which the registry is maintained
private PoolInfo poolInfo;
public PoolLifeCycleListenerRegistry(PoolInfo poolInfo) {
this.poolInfo = poolInfo;
poolListenersList = new ArrayList();
}
/**
* Add a listener to the list of pool life cycle listeners maintained by
* this registry.
* @param listener
*/
public void registerPoolLifeCycleListener(PoolLifeCycleListener listener) {
poolListenersList.add(listener);
//Check if poolLifeCycleListener has already been set to this. There
//could be multiple listeners.
if(!(poolListenersList.size() > 1)) {
//If the pool is already created, set this registry object to the pool.
PoolManager poolMgr = ConnectorRuntime.getRuntime().getPoolManager();
ResourcePool pool = poolMgr.getPool(poolInfo);
pool.setPoolLifeCycleListener(this);
}
}
/**
* Clear the list of pool lifecycle listeners maintained by the registry.
* This happens when a pool is destroyed so the information about its
* listeners need not be stored.
* @param poolName
*/
public void unRegisterPoolLifeCycleListener(PoolInfo poolInfo) {
//To make sure the registry is for the given pool name
if (this.poolInfo.equals(poolInfo)) {
if (poolListenersList != null && !poolListenersList.isEmpty()) {
//Remove all listeners from this list
poolListenersList.clear();
}
}
//Its not needed to remove pool life cycle listener from the pool since
//the pool will already be destroyed.
}
public void toString(StringBuilder stackTrace) {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.toString(stackTrace);
}
}
public void connectionAcquired(long resourceHandleId) {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.connectionAcquired(resourceHandleId);
}
}
public void connectionRequestServed(long timeTakenInMillis) {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.connectionRequestServed(timeTakenInMillis);
}
}
public void connectionTimedOut() {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.connectionTimedOut();
}
}
public void connectionNotMatched() {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.connectionNotMatched();
}
}
public void connectionMatched() {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.connectionMatched();
}
}
public void connectionUsed(long resourceHandleId) {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.connectionUsed(resourceHandleId);
}
}
public void connectionDestroyed(long resourceHandleId) {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.connectionDestroyed(resourceHandleId);
}
}
public void connectionReleased(long resourceHandleId) {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.connectionReleased(resourceHandleId);
}
}
public void connectionCreated() {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.connectionCreated();
}
}
public void foundPotentialConnectionLeak() {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.foundPotentialConnectionLeak();
}
}
public void connectionValidationFailed(int count) {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.connectionValidationFailed(count);
}
}
public void connectionsFreed(int count) {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.connectionsFreed(count);
}
}
public void decrementConnectionUsed(long resourceHandleId) {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.decrementConnectionUsed(resourceHandleId);
}
}
public void decrementNumConnFree() {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.decrementNumConnFree();
}
}
public void incrementNumConnFree(boolean beingDestroyed, int steadyPoolSize) {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.incrementNumConnFree(beingDestroyed, steadyPoolSize);
}
}
public void connectionRequestQueued() {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.connectionRequestQueued();
}
}
public void connectionRequestDequeued() {
for (PoolLifeCycleListener listener : poolListenersList) {
listener.connectionRequestDequeued();
}
}
}