private void waitForCompletion(long steps, ResourcePool oldPool, long totalWaitTime)
throws InterruptedException {
debug("waiting for in-use connections to return to pool or waiting requests to complete");
try {
Object poolWaitQueue = oldPool.getPoolWaitQueue();
synchronized (poolWaitQueue) {
long waitTime = totalWaitTime / steps;
if (waitTime > 0) {
poolWaitQueue.wait(waitTime);
}
}
} catch (InterruptedException ie) {
// ignore
}
debug("woke-up to verify in-use / waiting requests list");
}
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);
}
}