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package com.sun.enterprise.resource.monitor;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.management.j2ee.statistics.Stats;
import com.sun.enterprise.PoolManager;
import com.sun.enterprise.Switch;
import com.sun.enterprise.admin.monitor.registry.MonitoredObjectType;
import com.sun.enterprise.admin.monitor.registry.MonitoringLevel;
import com.sun.enterprise.admin.monitor.registry.MonitoringLevelListener;
import com.sun.enterprise.admin.monitor.registry.MonitoringRegistry;
import com.sun.enterprise.config.serverbeans.ConnectorConnectionPool;
import com.sun.enterprise.connectors.ConnectorConstants;
import com.sun.enterprise.resource.MonitorableResourcePool;
import com.sun.enterprise.server.ApplicationServer;
import com.sun.enterprise.connectors.util.ResourcesUtil;
import com.sun.enterprise.server.ServerContext;
import com.sun.logging.LogDomains;
import com.sun.enterprise.resource.ResourcePool;
/**
* Provides an implementation of the MonitoringLevelListener interface to
* receive callbacks from admin regarding change in the monitoring level.
* Though there are 3 monitoring levels defined by JSR77, we support
* only 2 levels - OFF and ON (HIGH/LOW). So essentially, HIGH and LOW
* for us is only ON
*
* @author Aditya Gore
* @since s1aspe 8.0
*/
//cleaned up - removed unnecessary/commented code.
public class ConnectorPoolMonitoringLevelListener implements MonitoringLevelListener {
private MonitoringRegistry registry_;
private static final MonitoringLevel OFF = MonitoringLevel.OFF;
private static final MonitoringLevel HIGH = MonitoringLevel.HIGH;
private static final MonitoringLevel LOW = MonitoringLevel.LOW;
private static Logger _logger = LogDomains.getLogger(
LogDomains.RSR_LOGGER );
public ConnectorPoolMonitoringLevelListener() {
}
/**
* @see com.sun.enterprise.admin.monitor.registry.MonitoringLevelListener#setLevel(com.sun.enterprise.admin.monitor.registry.MonitoringLevel)
* @deprecated
*/
//remove after admin removes it
public void setLevel( MonitoringLevel level ) {}
/**
* This is the callback invoked by the MonitoringRegistry
* on change in monitoring level
*
* @param from - the past level
* @param to - the new level
* @param handback - the Stats object this listener was registered for
* @deprecated
*/
public void changeLevel( MonitoringLevel from, MonitoringLevel to,
Stats handback ) {}
public void changeLevel(MonitoringLevel from, MonitoringLevel to,
MonitoredObjectType type) {
//If we were called, the MonitoredObjectType is definitely
//CONNECTOR_CONNECTION_POOL, so we can safely ignore it
if ( from == to ) {
//Its a no-op, so return
return;
}
AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
ServerContext ctxt = ApplicationServer.getServerContext();
if (ctxt != null ) {
registry_ = ctxt.getMonitoringRegistry();
}
return null;
}
});
if (from == OFF || from == LOW ) {
if ( to == HIGH ) {
logFine("Changing level from " + from +" to HIGH");
transitionToHigh();
}
}
if (from == HIGH || from == LOW ) {
if ( to == OFF ) {
logFine("Switching level from " + from + " to OFF");
switchOffMonitoring();
}
}
if (from == OFF || from == HIGH ) {
if ( to == LOW ) {
logFine("Changing level from " + from + " to LOW");
transitionToLow();
}
}
}
/*
private MonitorableResourcePool[] getConnectionFactories(){
ResourcesUtil resUtil = ResourcesUtil.getInstance();
ConnectorConnectionPool[] cp = resUtil.getConnectorConnectionPools();
if (cp == null) {
return null;
}
//ArrayList al = new ArrayList();
ArrayList<MonitorableResourcePool> al = new ArrayList();
HashMap allPools = getPoolManager().getPoolTable();
for( int i = 0 ; i < cp.length; i++ ) {
if (cp[i].getName().equalsIgnoreCase(
ConnectorConstants.DEFAULT_JMS_ADAPTER)) {
MonitorableResourcePool p = (MonitorableResourcePool)
allPools.get(cp[i].getName());
al.add(p);
}
}
return (MonitorableResourcePool[])al.toArray(
new MonitorableResourcePool[]{});
}
*/
private PoolManager getPoolManager() {
return Switch.getSwitch().getPoolManager();
}
private void transitionToHigh() {
final ResourcesUtil resUtil = ResourcesUtil.createInstance();
AccessController.doPrivileged( new PrivilegedAction() {
public Object run() {
//we should create a new pool object everytime since
//the stats have to be collected afresh
Map<ConnectorConnectionPool, MonitorableResourcePool> poolMap
= resUtil.getPoolMap();
if (poolMap == null) {
return null;
}
for (Map.Entry<ConnectorConnectionPool, MonitorableResourcePool> entry :
poolMap.entrySet() ) {
ConnectorConnectionPool ccp = entry.getKey();
MonitorableResourcePool pool = entry.getValue();
if ( pool != null ) {
try {
ConnectorConnectionPoolStatsImpl stats = new
ConnectorConnectionPoolStatsImpl(pool);
getPoolManager().setMonitoringEnabledHigh(
pool.getPoolName());
registry_.registerConnectorConnectionPoolStats(
stats, pool.getPoolName(),
resUtil.getAppName(ccp),
resUtil.getRAName(ccp),
null);
} catch (Exception mre) {
try {
_logger.log( Level.WARNING, "poolmon.cannot_reg",
mre.getMessage() );
getPoolManager().disableMonitoring(
pool.getPoolName());
} catch (Exception ex) {
//FIXME: ignore?
}
}
}
}
return null;
}
});
}
private void switchOffMonitoring() {
final ResourcesUtil resUtil = ResourcesUtil.createInstance();
//deregister stats
AccessController.doPrivileged( new PrivilegedAction() {
public Object run() {
//Unregister all connector connection pools
Map<ConnectorConnectionPool, MonitorableResourcePool>
pools = resUtil.getPoolMap();
if (pools == null) {
return null;
}
for (Map.Entry<ConnectorConnectionPool, MonitorableResourcePool> entry : pools.entrySet() ) {
ConnectorConnectionPool ccp = entry.getKey();
MonitorableResourcePool pool = entry.getValue();
if (pool != null) {
try {
registry_.unregisterConnectorConnectionPoolStats(
pool.getPoolName(),
resUtil.getAppName(ccp),
resUtil.getRAName(ccp) );
getPoolManager().disableMonitoring(
pool.getPoolName());
} catch( Exception mre ) {
_logger.log( Level.INFO, "poolmon.cannot_unreg");
}
}
}
return null;
}
});
}
private void transitionToLow() {
final ResourcesUtil resUtil = ResourcesUtil.createInstance();
AccessController.doPrivileged( new PrivilegedAction() {
public Object run() {
//we should create a new pool object everytime since
//the stats have to be collected afresh
Map<ConnectorConnectionPool, MonitorableResourcePool> poolMap
= resUtil.getPoolMap();
if (poolMap == null) {
return null;
}
for (Map.Entry<ConnectorConnectionPool, MonitorableResourcePool> entry :
poolMap.entrySet() ) {
ConnectorConnectionPool ccp = entry.getKey();
MonitorableResourcePool pool = entry.getValue();
if ( pool != null ) {
try {
ConnectorConnectionPoolStatsImpl stats = new
ConnectorConnectionPoolStatsImpl(pool);
getPoolManager().setMonitoringEnabledLow(
pool.getPoolName());
registry_.registerConnectorConnectionPoolStats(
stats, pool.getPoolName(),
resUtil.getAppName(ccp),
resUtil.getRAName(ccp), null);
} catch (Exception mre) {
try {
_logger.log( Level.WARNING, "poolmon.cannot_reg",
mre.getMessage() );
getPoolManager().disableMonitoring(
pool.getPoolName());
} catch (Exception ex) {
//FIXME: ignore?
}
}
}
}
return null;
}
});
}
private void logFine( String msg ) {
if ( msg != null && _logger.isLoggable( Level.FINE ) ) {
_logger.fine( msg );
}
}
}
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