com.gemstone.gemfire.internal.cache.TXMessage Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of gemfire-core Show documentation
Show all versions of gemfire-core Show documentation
SnappyData store based off Pivotal GemFireXD
/*
* Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you
* may not use this file except in compliance with the License. You
* may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied. See the License for the specific language governing
* permissions and limitations under the License. See accompanying
* LICENSE file.
*/
package com.gemstone.gemfire.internal.cache;
import com.gemstone.gemfire.SystemFailure;
import com.gemstone.gemfire.cache.CacheClosedException;
import com.gemstone.gemfire.cache.RegionDestroyedException;
import com.gemstone.gemfire.cache.TransactionException;
import com.gemstone.gemfire.distributed.DistributedSystemDisconnectedException;
import com.gemstone.gemfire.distributed.internal.DistributionManager;
import com.gemstone.gemfire.distributed.internal.MessageWithReply;
import com.gemstone.gemfire.distributed.internal.ReplyException;
import com.gemstone.gemfire.distributed.internal.ReplyMessage;
import com.gemstone.gemfire.distributed.internal.ReplyProcessor21;
import com.gemstone.gemfire.distributed.internal.membership.InternalDistributedMember;
import com.gemstone.gemfire.i18n.LogWriterI18n;
import com.gemstone.gemfire.internal.i18n.LocalizedStrings;
/**
* Base class for TX meta-operations like commit/rollback.
*
* @author sbawaska, swale
*/
public abstract class TXMessage extends AbstractOperationMessage implements
MessageWithReply {
public TXMessage() {
}
public TXMessage(final TXStateInterface tx, final ReplyProcessor21 processor) {
super(tx);
this.processorId = processor != null ? processor.getProcessorId() : 0;
}
@Override
protected final void basicProcess(final DistributionManager dm) {
Throwable thr = null;
final LogWriterI18n logger = dm.getLoggerI18n();
final boolean fineEnabled = logger.fineEnabled() || TXStateProxy.LOG_FINE;
boolean sendReply = true;
TXStateProxy proxy = null;
try {
if (fineEnabled) {
logger.info(LocalizedStrings.DEBUG, "TX: received " + toString()
+ " from " + getSender() + " for " + getTXId());
}
final GemFireCacheImpl cache = GemFireCacheImpl.getInstance();
if (cache == null || cache.isClosed()) {
// This cache is closed / shutting down... we can't do much.
if (fineEnabled) {
logger.info(LocalizedStrings.DEBUG,
"TX: returning due to cache closed for " + toString());
}
return;
}
final TXManagerImpl txMgr = cache.getTxManager();
assert getTXId() != null;
final boolean endTX = isTXEnd();
final boolean useBatching = useBatching();
final TXManagerImpl.TXContext txContext = txMgr.masqueradeAs(this, endTX,
useBatching);
final TXStateInterface tx;
if (txContext != null) {
tx = txContext.getTXState();
proxy = (tx != null ? tx.getProxy() : null);
if (fineEnabled) {
logger.fine("TX: got TXContext " + txContext + ", TX " + tx + " for "
+ toString());
}
try {
sendReply = operateOnTX(proxy, dm);
} finally {
txMgr.unmasquerade(txContext, useBatching);
postOperateOnTX(proxy, dm);
}
}
else {
sendReply = operateOnTX(null, dm);
}
} catch (TransactionException te) {
SystemFailure.checkFailure();
thr = te;
} catch (RegionDestroyedException rde) {
thr = new ForceReattemptException(LocalizedStrings
.PartitionMessage_REGION_IS_DESTROYED_IN_0.toLocalizedString(dm
.getDistributionManagerId()), rde);
} catch (Throwable t) {
Error err;
if (t instanceof Error && SystemFailure.isJVMFailureError(
err = (Error)t)) {
SystemFailure.initiateFailure(err);
// If this ever returns, rethrow the error. We're poisoned
// now, so don't let this thread continue.
throw err;
}
// Whenever you catch Error or Throwable, you must also
// check for fatal JVM error (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
// Asif: The commented snippet is absent in trunk, which results in
// RemoteTransactionDUnit passing. If this is enabled it will fail.
// The code looks logical, why is it absent from trunk?
// [sumedh] The snippet below should be present. A bug on trunk that
// masks other bugs.
if (sendReply) {
thr = t;
}
} finally {
if (sendReply) {
ReplyException rex = null;
if (thr != null) {
rex = new ReplyException(thr);
}
sendReply(getSender(), this.processorId, dm, rex, proxy);
}
}
}
protected void sendReply(InternalDistributedMember recipient,
int processorId, DistributionManager dm, ReplyException rex,
TXStateProxy proxy) {
if (processorId != 0) {
ReplyMessage.send(recipient, processorId, rex, getReplySender(dm),
isTXEnd() ? null : this /* don't update regions */);
}
}
/**
* Transaction operations override this method to do actual work
*
* @param txProxy
* The {@link TXStateProxy} to operate on
* @param dm
* The {@link DistributionManager} being used for the message
*
* @return true if {@link TXMessage} should send a reply false otherwise
*/
protected abstract boolean operateOnTX(TXStateProxy txProxy,
DistributionManager dm);
/**
* Sub-classes can override this to perform any operations post
* {@link #operateOnTX} method call. Note that the TXStateInterface will not
* be set in thread-local at this point.
*/
protected void postOperateOnTX(TXStateProxy txProxy, DistributionManager dm) {
}
/**
* Return true if this is an operation that may use batching.
*/
protected boolean useBatching() {
return false;
}
@Override
public boolean orderedDelivery(boolean threadOwnsResources) {
// use ordered delivery of TX messages by default, particularly
// commit/rollback for better behaviour with subsequent ops
return true;
}
protected int getMessageProcessorType() {
return DistributionManager.HIGH_PRIORITY_EXECUTOR;
}
@Override
public final int getProcessorType() {
return this.processorType == 0 ? getMessageProcessorType()
: this.processorType;
}
@Override
public void setProcessorType(boolean isReaderThread) {
if (isReaderThread) {
this.processorType = DistributionManager.WAITING_POOL_EXECUTOR;
}
}
}