private DistributedRegion getRegion(DistributionManager dm) {
if (region != null) {
return region;
}
// set the init level requirement so that we don't hang in CacheFactory.getInstance() (bug
// 36175)
int oldLevel = LocalRegion.setThreadInitLevelRequirement(LocalRegion.BEFORE_INITIAL_IMAGE);
try {
GemFireCacheImpl gfc = (GemFireCacheImpl) CacheFactory.getInstance(dm.getSystem());
Region r = gfc.getRegionByPathForProcessing(this.regionPath);
if (r instanceof DistributedRegion) {
region = (DistributedRegion) r;
}
} finally {
LocalRegion.setThreadInitLevelRequirement(oldLevel);
}
return region;
}
/**
* Upon receipt of the message, both process the message and send an acknowledgement, not
* necessarily in that order. Note: Any hang in this message may cause a distributed deadlock for
* those threads waiting for an acknowledgement.
*
* @throws PartitionedRegionException if the region does not exist (typically, if it has been
* destroyed)
*/
@Override
public void process(final DistributionManager dm) {
Throwable thr = null;
boolean sendReply = true;
LocalRegion r = null;
long startTime = 0;
try {
if (checkCacheClosing(dm) || checkDSClosing(dm)) {
thr =
new CacheClosedException(
LocalizedStrings.PartitionMessage_REMOTE_CACHE_IS_CLOSED_0.toLocalizedString(
dm.getId()));
return;
}
GemFireCacheImpl gfc = (GemFireCacheImpl) CacheFactory.getInstance(dm.getSystem());
r = gfc.getRegionByPathForProcessing(this.regionPath);
if (r == null && failIfRegionMissing()) {
// if the distributed system is disconnecting, don't send a reply saying
// the partitioned region can't be found (bug 36585)
thr =
new RegionDestroyedException(
LocalizedStrings.RemoteOperationMessage_0_COULD_NOT_FIND_REGION_1.toLocalizedString(
new Object[] {dm.getDistributionManagerId(), regionPath}),
regionPath);
return; // reply sent in finally block below
}
thr = UNHANDLED_EXCEPTION;
// [bruce] r might be null here, so we have to go to the cache instance to get the txmgr
TXManagerImpl txMgr = GemFireCacheImpl.getInstance().getTxManager();
TXStateProxy tx = null;
try {
tx = txMgr.masqueradeAs(this);
sendReply = operateOnRegion(dm, r, startTime);
} finally {
txMgr.unmasquerade(tx);
}
thr = null;
} catch (RemoteOperationException fre) {
thr = fre;
} catch (DistributedSystemDisconnectedException se) {
// bug 37026: this is too noisy...
// throw new CacheClosedException("remote system shutting down");
// thr = se; cache is closed, no point trying to send a reply
thr = null;
sendReply = false;
if (logger.isDebugEnabled()) {
logger.debug("shutdown caught, abandoning message: {}", se.getMessage(), se);
}
} catch (RegionDestroyedException rde) {
// [bruce] RDE does not always mean that the sender's region is also
// destroyed, so we must send back an exception. If the sender's
// region is also destroyed, who cares if we send it an exception
// if (pr != null && pr.isClosed) {
thr =
new ForceReattemptException(
LocalizedStrings.PartitionMessage_REGION_IS_DESTROYED_IN_0.toLocalizedString(
dm.getDistributionManagerId()),
rde);
// }
} catch (VirtualMachineError err) {
SystemFailure.initiateFailure(err);
// If this ever returns, rethrow the error. We're poisoned
// now, so don't let this thread continue.
throw err;
} catch (Throwable t) {
// Whenever you catch Error or Throwable, you must also
// catch VirtualMachineError (see above). However, there is
// _still_ a possibility that you are dealing with a cascading
// error condition, so you also need to check to see if the JVM
// is still usable:
SystemFailure.checkFailure();
// log the exception at fine level if there is no reply to the message
thr = null;
if (sendReply) {
if (!checkDSClosing(dm)) {
thr = t;
} else {
// don't pass arbitrary runtime exceptions and errors back if this
// cache/vm is closing
thr =
new ForceReattemptException(
LocalizedStrings.PartitionMessage_DISTRIBUTED_SYSTEM_IS_DISCONNECTING
.toLocalizedString());
}
}
if (logger.isTraceEnabled(LogMarker.DM) && (t instanceof RuntimeException)) {
logger.trace(LogMarker.DM, "Exception caught while processing message", t);
}
} finally {
if (sendReply) {
ReplyException rex = null;
if (thr != null) {
// don't transmit the exception if this message was to a listener
// and this listener is shutting down
rex = new ReplyException(thr);
}
// Send the reply if the operateOnPartitionedRegion returned true
sendReply(getSender(), this.processorId, dm, rex, r, startTime);
}
}
}