public ConnectorConnectionPool createConnectorConnectionPool(
JdbcConnectionPool adminPool, PoolInfo poolInfo) throws ConnectorRuntimeException {
String moduleName = JdbcResourcesUtil.createInstance().getRANameofJdbcConnectionPool(adminPool);
int txSupport = getTxSupport(moduleName);
ConnectorDescriptor connDesc = runtime.getConnectorDescriptor(moduleName);
// Create the connector Connection Pool object from the configbean object
ConnectorConnectionPool conConnPool = new ConnectorConnectionPool(poolInfo);
conConnPool.setTransactionSupport(txSupport);
setConnectorConnectionPoolAttributes(conConnPool, adminPool);
// Initially create the ConnectorDescriptor
ConnectorDescriptorInfo connDescInfo = createConnectorDescriptorInfo(connDesc, moduleName);
connDescInfo.setMCFConfigProperties(getMCFConfigProperties(adminPool, conConnPool, connDesc));
// since we are deploying a 1.0 RAR, this is null
connDescInfo.setResourceAdapterConfigProperties((Set) null);
conConnPool.setConnectorDescriptorInfo(connDescInfo);
return conConnPool;
}
/**
* Undeploy the resource from the server's runtime naming context
*
* @param poolInfo a resource object
* @throws UnsupportedOperationException Currently we are not supporting this method.
*/
private synchronized void actualUndeployResource(PoolInfo poolInfo) throws Exception {
runtime.deleteConnectorConnectionPool(poolInfo);
// performance issue related fix : IT 15784
ConnectorRegistry.getInstance().removeTransparentDynamicReconfigPool(poolInfo);
if (_logger.isLoggable(Level.FINEST)) {
_logger.finest("Pool Undeployed");
}
}
private void recreatePool(ConnectorConnectionPool connConnPool) {
try {
runtime.recreateConnectorConnectionPool(connConnPool);
debug("Pool [" + connConnPool.getName() + "] recreation done");
} catch (ConnectorRuntimeException cre) {
Object params[] = new Object[] {connConnPool.getName(), cre};
_logger.log(Level.WARNING, "error.redeploying.jdbc.pool", params);
}
}
/**
* Deploy the resource into the server's runtime naming context
*
* @param resource a resource object
* @throws Exception thrown if fail
*/
public void actualDeployResource(Object resource, PoolInfo poolInfo) {
if (_logger.isLoggable(Level.FINE)) {
_logger.fine(" JdbcConnectionPoolDeployer - actualDeployResource : " + poolInfo);
}
JdbcConnectionPool adminPool = (JdbcConnectionPool) resource;
try {
ConnectorConnectionPool connConnPool = createConnectorConnectionPool(adminPool, poolInfo);
registerTransparentDynamicReconfigPool(poolInfo, adminPool);
// now do internal book keeping
runtime.createConnectorConnectionPool(connConnPool);
} catch (Exception e) {
Object params[] = new Object[] {poolInfo, e};
_logger.log(Level.WARNING, "error.creating.jdbc.pool", params);
}
}
/**
* Register the jdbc connection pool Stats Provider object to the monitoring framework under the
* specific application name monitoring sub tree.
*
* @param appName
* @return
*/
@Override
public ConnectionPoolAppProbeProvider registerConnectionPool(PoolInfo poolInfo, String appName) {
ConnectionPoolAppProbeProvider probeAppProvider = null;
ResourcePool pool = runtime.getConnectionPoolConfig(poolInfo);
if (pool instanceof JdbcConnectionPool) {
probeAppProvider = new JdbcConnPoolAppProbeProvider();
JdbcConnPoolAppStatsProvider jdbcPoolAppStatsProvider =
new JdbcConnPoolAppStatsProvider(poolInfo, appName);
StatsProviderManager.register(
"jdbc-connection-pool",
PluginPoint.SERVER,
"resources/"
+ ConnectorsUtil.escapeResourceNameForMonitoring(poolInfo.getName())
+ "/"
+ appName,
jdbcPoolAppStatsProvider);
jdbcPoolAppStatsProviders.add(jdbcPoolAppStatsProvider);
}
return probeAppProvider;
}
/**
* Reset pool statistics. When annotated with @Reset, this method is invoked whenever monitoring
* is turned to HIGH from OFF, thereby setting the statistics to appropriate values.
*/
@Reset
public void reset() {
if (logger.isLoggable(Level.FINEST)) {
logger.finest("Reset event received - poolInfo = " + poolInfo);
}
PoolStatus status = ConnectorRuntime.getRuntime().getPoolManager().getPoolStatus(poolInfo);
numConnUsed.setCurrent(status.getNumConnUsed());
numConnFree.setCurrent(status.getNumConnFree());
numConnCreated.reset();
numConnDestroyed.reset();
numConnFailedValidation.reset();
numConnTimedOut.reset();
numConnAcquired.reset();
numConnReleased.reset();
connRequestWaitTime.reset();
numConnSuccessfullyMatched.reset();
numConnNotSuccessfullyMatched.reset();
numPotentialConnLeak.reset();
averageConnWaitTime.reset();
totalConnRequestWaitTime.reset();
waitQueueLength.reset();
}
public JdbcPoolMonitoringExtension() {
jdbcStatsProviders = new ArrayList<JdbcConnPoolStatsProvider>();
jdbcPoolAppStatsProviders = new ArrayList<JdbcConnPoolAppStatsProvider>();
runtime = ConnectorRuntime.getRuntime();
}
private void handlePoolRecreation(final ConnectorConnectionPool connConnPool)
throws ConnectorRuntimeException {
debug("[DRC] Pool recreation required");
final long reconfigWaitTimeout = connConnPool.getDynamicReconfigWaitTimeout();
PoolInfo poolInfo =
new PoolInfo(
connConnPool.getName(),
connConnPool.getApplicationName(),
connConnPool.getModuleName());
final ResourcePool oldPool = runtime.getPoolManager().getPool(poolInfo);
if (reconfigWaitTimeout > 0) {
oldPool.blockRequests(reconfigWaitTimeout);
if (oldPool.getPoolWaitQueue().getQueueLength() > 0
|| oldPool.getPoolStatus().getNumConnUsed() > 0) {
Runnable thread =
new Runnable() {
@Override
public void run() {
try {
long numSeconds = 5000L; // poll every 5 seconds
long steps = reconfigWaitTimeout / numSeconds;
if (steps == 0) {
waitForCompletion(steps, oldPool, reconfigWaitTimeout);
} else {
for (long i = 0; i < steps; i++) {
waitForCompletion(steps, oldPool, reconfigWaitTimeout);
if (oldPool.getPoolWaitQueue().getQueueLength() == 0
&& oldPool.getPoolStatus().getNumConnUsed() == 0) {
debug("wait-queue is empty and num-con-used is 0");
break;
}
}
}
handlePoolRecreationForExistingProxies(connConnPool);
PoolWaitQueue reconfigWaitQueue = oldPool.getReconfigWaitQueue();
debug("checking reconfig-wait-queue for notification");
if (reconfigWaitQueue.getQueueContents().size() > 0) {
for (Object o : reconfigWaitQueue.getQueueContents()) {
debug("notifying reconfig-wait-queue object [ " + o + " ]");
synchronized (o) {
o.notify();
}
}
}
} catch (InterruptedException ie) {
if (_logger.isLoggable(Level.FINEST)) {
_logger.log(
Level.FINEST,
"Interrupted while waiting for all existing clients to return connections to pool",
ie);
}
}
if (_logger.isLoggable(Level.FINEST)) {
_logger.finest(
"woke-up after giving time for in-use connections to return, "
+ "WaitQueue-Length : ["
+ oldPool.getPoolWaitQueue().getQueueContents()
+ "], "
+ "Num-Conn-Used : ["
+ oldPool.getPoolStatus().getNumConnUsed()
+ "]");
}
}
};
Callable c = Executors.callable(thread);
ArrayList list = new ArrayList();
list.add(c);
try {
execService.invokeAll(list);
} catch (Exception e) {
Object[] params = new Object[] {connConnPool.getName(), e};
_logger.log(Level.WARNING, "exception.redeploying.pool.transparently", params);
}
} else {
handlePoolRecreationForExistingProxies(connConnPool);
}
} else if (oldPool.getReconfigWaitTime() > 0) {
// reconfig is being switched off, invalidate proxies
Collection<BindableResource> resources =
JdbcResourcesUtil.getResourcesOfPool(
runtime.getResources(oldPool.getPoolInfo()), oldPool.getPoolInfo().getName());
ConnectorRegistry registry = ConnectorRegistry.getInstance();
for (BindableResource resource : resources) {
ResourceInfo resourceInfo = ConnectorsUtil.getResourceInfo(resource);
registry.removeResourceFactories(resourceInfo);
}
// recreate the pool now.
recreatePool(connConnPool);
} else {
recreatePool(connConnPool);
}
}
/** {@inheritDoc} */
@Override
public synchronized void redeployResource(Object resource) throws Exception {
final JdbcConnectionPool adminPool = (JdbcConnectionPool) resource;
PoolInfo poolInfo = ConnectorsUtil.getPoolInfo(adminPool);
// Only if pool has already been deployed in this server-instance
// reconfig this pool
if (!runtime.isConnectorConnectionPoolDeployed(poolInfo)) {
if (_logger.isLoggable(Level.FINE)) {
_logger.fine(
"The JDBC connection pool "
+ poolInfo
+ " is not referred or not yet created in this server "
+ "instance and hence pool redeployment is ignored");
}
return;
}
final ConnectorConnectionPool connConnPool = createConnectorConnectionPool(adminPool, poolInfo);
if (connConnPool == null) {
throw new ConnectorRuntimeException(
"Unable to create ConnectorConnectionPool" + "from JDBC connection pool");
}
// now do internal book keeping
HashSet excludes = new HashSet();
// add MCF config props to the set that need to be excluded
// in checking for the equality of the props with old pool
excludes.add("TransactionIsolation");
excludes.add("GuaranteeIsolationLevel");
excludes.add("ValidationTableName");
excludes.add("ConnectionValidationRequired");
excludes.add("ValidationMethod");
excludes.add("StatementWrapping");
excludes.add("StatementTimeout");
excludes.add("ValidationClassName");
excludes.add("StatementCacheSize");
excludes.add("StatementCacheType");
excludes.add("StatementLeakTimeoutInSeconds");
excludes.add("StatementLeakReclaim");
try {
if (_logger.isLoggable(Level.FINEST)) {
_logger.finest("Calling reconfigure pool");
}
boolean requirePoolRecreation =
runtime.reconfigureConnectorConnectionPool(connConnPool, excludes);
if (requirePoolRecreation) {
if (runtime.isServer() || runtime.isEmbedded()) {
handlePoolRecreation(connConnPool);
} else {
recreatePool(connConnPool);
}
}
} catch (ConnectorRuntimeException cre) {
Object params[] = new Object[] {poolInfo, cre};
_logger.log(Level.WARNING, "error.redeploying.jdbc.pool", params);
throw cre;
}
}
