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/*
* 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.partitioned;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.Collection;
import java.util.Map;
import java.util.Set;
import com.gemstone.gemfire.CancelException;
import com.gemstone.gemfire.SystemFailure;
import com.gemstone.gemfire.cache.CacheClosedException;
import com.gemstone.gemfire.cache.CacheException;
import com.gemstone.gemfire.cache.DiskAccessException;
import com.gemstone.gemfire.cache.LowMemoryException;
import com.gemstone.gemfire.cache.Operation;
import com.gemstone.gemfire.cache.RegionDestroyedException;
import com.gemstone.gemfire.cache.query.QueryException;
import com.gemstone.gemfire.distributed.DistributedSystemDisconnectedException;
import com.gemstone.gemfire.distributed.internal.DM;
import com.gemstone.gemfire.distributed.internal.DirectReplyProcessor;
import com.gemstone.gemfire.distributed.internal.DistributionManager;
import com.gemstone.gemfire.distributed.internal.DistributionMessage;
import com.gemstone.gemfire.distributed.internal.InternalDistributedSystem;
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.Assert;
import com.gemstone.gemfire.internal.cache.AbstractOperationMessage;
import com.gemstone.gemfire.internal.cache.DataLocationException;
import com.gemstone.gemfire.internal.cache.EntryEventImpl;
import com.gemstone.gemfire.internal.cache.FilterRoutingInfo;
import com.gemstone.gemfire.internal.cache.ForceReattemptException;
import com.gemstone.gemfire.internal.cache.GemFireCacheImpl;
import com.gemstone.gemfire.internal.cache.PartitionedRegion;
import com.gemstone.gemfire.internal.cache.PartitionedRegionException;
import com.gemstone.gemfire.internal.cache.PrimaryBucketException;
import com.gemstone.gemfire.internal.cache.TXManagerImpl;
import com.gemstone.gemfire.internal.cache.TXStateInterface;
import com.gemstone.gemfire.internal.i18n.LocalizedStrings;
import com.gemstone.gemfire.internal.sequencelog.EntryLogger;
import com.gemstone.gnu.trove.THashMap;
/**
* The base PartitionedRegion message type upon which other messages should be
* based.
*
* @author mthomas
* @author bruce
* @since 5.0
*/
public abstract class PartitionMessage extends AbstractOperationMessage
implements MessageWithReply {
/** default exception to ensure a false-positive response is never returned */
static final ForceReattemptException UNHANDLED_EXCEPTION
= (ForceReattemptException)new ForceReattemptException(LocalizedStrings.PartitionMessage_UNKNOWN_EXCEPTION.toLocalizedString()).fillInStackTrace();
int regionId;
/**
* whether this message is being sent for listener notification
*/
boolean notificationOnly;
protected boolean sendDeltaWithFullValue = true;
/** flag to indicate notification message */
protected static final short NOTIFICATION_ONLY =
AbstractOperationMessage.UNRESERVED_FLAGS_START;
/** flag to indicate ifNew in PutMessages */
protected static final short IF_NEW = (NOTIFICATION_ONLY << 1);
/** flag to indicate ifOld in PutMessages */
protected static final short IF_OLD = (IF_NEW << 1);
/** flag to indicate that oldValue is required for PutMessages and others */
protected static final short REQUIRED_OLD_VAL = (IF_OLD << 1);
/** flag to indicate filterInfo in message */
protected static final short HAS_FILTER_INFO = (REQUIRED_OLD_VAL << 1);
/** flag to indicate delta as value in message */
protected static final short HAS_DELTA = (HAS_FILTER_INFO << 1);
/** the unreserved flags start for child classes */
protected static final short UNRESERVED_FLAGS_START = (HAS_DELTA << 1);
public PartitionMessage() {
}
public PartitionMessage(final TXStateInterface tx) {
super(tx);
}
public PartitionMessage(InternalDistributedMember recipient, int regionId,
ReplyProcessor21 processor, final TXStateInterface tx) {
super(tx);
Assert.assertTrue(recipient != null,
"PartitionMesssage recipient can not be null");
setRecipient(recipient);
this.regionId = regionId;
this.processorId = processor == null ? 0 : processor.getProcessorId();
if (processor != null && this.isSevereAlertCompatible()) {
processor.enableSevereAlertProcessing();
}
}
public PartitionMessage(Collection recipients,
int regionId, ReplyProcessor21 processor, final TXStateInterface tx) {
super(tx);
setRecipients(recipients);
this.regionId = regionId;
this.processorId = processor == null ? 0 : processor.getProcessorId();
if (processor != null && this.isSevereAlertCompatible()) {
processor.enableSevereAlertProcessing();
}
}
/**
* Copy constructor that initializes the fields declared in this class
* @param other
*/
public PartitionMessage(PartitionMessage other) {
super(other);
this.regionId = other.regionId;
this.notificationOnly = other.notificationOnly;
}
/**
* Severe alert processing enables suspect processing at the ack-wait-threshold
* and issuing of a severe alert at the end of the ack-severe-alert-threshold.
* Some messages should not support this type of processing
* (e.g., GII, or DLockRequests)
* @return whether severe-alert processing may be performed on behalf
* of this message
*/
@Override
public boolean isSevereAlertCompatible() {
return true;
}
protected int getMessageProcessorType() {
if (this.notificationOnly) {
// bug #47964 - deadlock with all PR threads busy. When using UDP
// messaging serial-executor messages are not in-line processed. See
// r37496 for more details.
InternalDistributedSystem system = InternalDistributedSystem.getAnyInstance();
if (system != null && system.getConfig().getDisableTcp()) {
return DistributionManager.SERIAL_EXECUTOR;
}
}
return DistributionManager.PARTITIONED_REGION_EXECUTOR;
}
@Override
public final int getProcessorType() {
return this.processorType == 0 ? getMessageProcessorType()
: this.processorType;
}
@Override
public void setProcessorType(boolean isReaderThread) {
// if this is a reader/processor thread itself, then use a waiting pool
// executor on the remote end (#44913/#42459)
if (isReaderThread && getMessageProcessorType() != DistributionManager
.WAITING_POOL_EXECUTOR) {
this.processorType = DistributionManager.WAITING_POOL_EXECUTOR;
}
}
/**
* @return the compact value that will be sent which represents the
* PartitionedRegion
* @see PartitionedRegion#getPRId()
*/
public final int getRegionId()
{
return regionId;
}
/**
* @param processorId1 the {@link
* com.gemstone.gemfire.distributed.internal.ReplyProcessor21} id associated
* with the message, null if no acknowlegement is required.
*/
public final void registerProcessor(int processorId1)
{
this.processorId = processorId1;
}
/**
* @return return the message that should be sent to listeners, or null if this message
* should not be relayed
*/
public PartitionMessage getMessageForRelayToListeners(EntryEventImpl event, Set recipients) {
return null;
}
/**
* check to see if the cache is closing
*/
final public boolean checkCacheClosing(DistributionManager dm) {
GemFireCacheImpl cache = GemFireCacheImpl.getInstance();
// return (cache != null && cache.isClosed());
return cache == null || cache.isClosed();
}
/**
* check to see if the distributed system is closing
* @return true if the distributed system is closing
*/
final public boolean checkDSClosing(DistributionManager dm) {
InternalDistributedSystem ds = dm.getSystem();
return (ds == null || ds.isDisconnecting());
}
/**
* 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
protected void basicProcess(final DistributionManager dm) {
Throwable thr = null;
LogWriterI18n logger = null;
boolean sendReply = true;
PartitionedRegion pr = null;
long startTime = 0;
EntryLogger.setSource(getSender(), "PR");
try {
logger = dm.getLoggerI18n();
if (checkCacheClosing(dm) || checkDSClosing(dm)) {
String msg = LocalizedStrings.PartitionMessage_REMOTE_CACHE_IS_CLOSED_0
.toLocalizedString(dm.getId());
thr = new ForceReattemptException(msg, new CacheClosedException(msg));
return;
}
// logger.info("Trying to get pr with id : "+this.regionId);
pr = PartitionedRegion.getPRFromId(this.regionId);
if (pr == 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 ForceReattemptException(LocalizedStrings.PartitionMessage_0_COULD_NOT_FIND_PARTITIONED_REGION_WITH_ID_1.toLocalizedString(new Object[] {dm.getDistributionManagerId(), Integer.valueOf(regionId)}));
return; // reply sent in finally block below
}
if (pr != null) {
startTime = pr.getPrStats().startPartitionMessageProcessing();
}
thr = UNHANDLED_EXCEPTION;
final GemFireCacheImpl cache = GemFireCacheImpl.getInstance();
if(cache==null) {
throw new CacheClosedException(
LocalizedStrings.PartitionMessage_REMOTE_CACHE_IS_CLOSED_0
.toLocalizedString(dm.getId()));
}
if (getTXId() == null) {
sendReply = operateOnPartitionedRegion(dm, pr, startTime);
}
else {
final TXManagerImpl txMgr = cache.getTxManager();
final TXManagerImpl.TXContext context = txMgr.masqueradeAs(this, false,
true);
try {
sendReply = operateOnPartitionedRegion(dm, pr, startTime);
} finally {
txMgr.unmasquerade(context, true);
}
}
thr = null;
} catch (ForceReattemptException fre) {
thr = fre;
} catch (DataLocationException fre) {
thr = new ForceReattemptException(fre.getMessage(), 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.fineEnabled()) {
logger.fine("shutdown caught, abandoning message: " + se);
}
}
catch (CancelException ce) {
// force retry
thr = new ForceReattemptException(ce.getMessage(), ce);
}
catch (RegionDestroyedException rde) {
// if (logger.fineEnabled()) {
// logger.fine("Region is Destroyed " + 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 (final 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
thr = null;
if (sendReply) {
// GemFireXD can throw force reattempt exception wrapped in function
// exception from index management layer for retries
if (t.getCause() instanceof ForceReattemptException) {
thr = t.getCause();
}
else 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.fineEnabled()) {
if (DistributionManager.VERBOSE && (t instanceof RuntimeException)
&& !(t.getCause() instanceof ForceReattemptException)) {
logger.fine("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
boolean excludeException =
this.notificationOnly
&& ((thr instanceof CancelException)
|| (thr instanceof ForceReattemptException));
if (!excludeException) {
rex = new ReplyException(thr);
}
}
// Send the reply if the operateOnPartitionedRegion returned true
sendReply(getSender(), this.processorId, dm, rex, pr, startTime);
EntryLogger.clearSource();
}
}
}
/** Send a generic ReplyMessage. This is in a method so that subclasses can override the reply message type
* @param pr the Partitioned Region for the message whose statistics are incremented
* @param startTime the start time of the operation in nanoseconds
* @see PutMessage#sendReply
*/
protected void sendReply(InternalDistributedMember member, int procId, DM dm, ReplyException ex, PartitionedRegion pr, long startTime) {
if (pr != null && startTime > 0) {
pr.getPrStats().endPartitionMessagesProcessing(startTime);
}
ReplyMessage.send(member, procId, ex, getReplySender(dm), this,
pr != null && pr.isInternalRegion());
}
/**
* Allow classes that over-ride to choose whether
* a RegionDestroyException is thrown if no partitioned region is found (typically occurs if the message will be sent
* before the PartitionedRegion has been fully constructed.
* @return true if throwing a {@link RegionDestroyedException} is acceptable
*/
protected boolean failIfRegionMissing() {
return true;
}
/**
* relay this message to another set of recipients for event notification
* @param cacheOpRecipients recipients of associated bucket CacheOperationMessage
* @param adjunctRecipients recipients who unconditionally get the message
* @param filterRoutingInfo routing information for all recipients
* @param event the event causing this message
* @param r the region being operated on
* @param processor the reply processor to be notified
*/
public Set relayToListeners(Set cacheOpRecipients, Set adjunctRecipients,
FilterRoutingInfo filterRoutingInfo,
EntryEventImpl event, PartitionedRegion r, DirectReplyProcessor processor)
{
LogWriterI18n log = r.getCache().getLoggerI18n();
this.processorId = processor == null? 0 : processor.getProcessorId();
this.notificationOnly = true;
if(!adjunctRecipients.isEmpty()) {
resetRecipients();
this.setFilterInfo(filterRoutingInfo);
setRecipients(adjunctRecipients);
if (DistributionManager.VERBOSE) {
log.fine("Relaying partition message to other processes for listener notification");
}
return r.getDistributionManager().putOutgoing(this);
}
return null;
}
/**
* return a new reply processor for this class, for use in relaying a response.
* This must be an instance method so subclasses can override it
* properly.
*/
PartitionResponse createReplyProcessor(PartitionedRegion r, Set recipients,
final TXStateInterface tx) {
//r.getCache().getLogger().warning("PartitionMessage.createReplyProcessor()", new Exception("stack trace"));
return new PartitionResponse(r.getSystem(), recipients, tx);
}
/**
* An operation upon the messages partitioned region which each subclassing
* message must implement
*
* @param dm
* the manager that received the message
* @param pr
* the partitioned region that should be modified
* @param startTime the start time of the operation
* @return true if a reply message should be sent
* @throws CacheException if an error is generated in the remote cache
* @throws DataLocationException if the peer is no longer available
*/
protected abstract boolean operateOnPartitionedRegion(DistributionManager dm,
PartitionedRegion pr, long startTime) throws CacheException, QueryException,
DataLocationException, InterruptedException, IOException;
/**
* Fill out this instance of the message using the DataInput
* Required to be a {@link com.gemstone.gemfire.DataSerializable}Note: must
* be symmetric with {@link #toData(DataOutput)}in what it reads
*/
@Override
public void fromData(DataInput in) throws IOException, ClassNotFoundException
{
super.fromData(in);
setBooleans(this.flags);
this.regionId = in.readInt();
}
/**
* Re-construct the booleans using the compressed short. A subclass must override
* this method if it is using bits in the compressed short.
*/
protected void setBooleans(short s) {
this.notificationOnly = ((s & NOTIFICATION_ONLY) != 0);
}
/**
* Send the contents of this instance to the DataOutput Required to be a
* {@link com.gemstone.gemfire.DataSerializable}Note: must be symmetric with
* {@link #fromData(DataInput)}in what it writes
*/
@Override
public void toData(DataOutput out) throws IOException
{
super.toData(out);
out.writeInt(this.regionId);
}
/**
* Sets the bits of a short by using the bit masks. A subclass must override
* this method if it is using bits in the compressed short.
* @return short with appropriate bits set
*/
@Override
protected short computeCompressedShort(short s) {
if (this.notificationOnly) s |= NOTIFICATION_ONLY;
return s;
}
//private final static String PN_TOKEN = ".cache.";
/**
* Helper class of {@link #toString()}
*
* @param buff
* buffer in which to append the state of this instance
*/
@Override
protected void appendFields(StringBuilder buff) {
// className.substring(className.lastIndexOf('.', className.lastIndexOf('.')
// - 1) + 1); // partition. more generic version
//buff.append(className.substring(className.indexOf(PN_TOKEN) +
//PN_TOKEN.length())); // partition.
buff.append("; prid="); // make sure this is the first one
buff.append(this.regionId);
// Append name, if we have it
String name = null;
try {
PartitionedRegion pr = PartitionedRegion.getPRFromId(this.regionId);
if (pr != null) {
name = pr.getFullPath();
}
} catch (Exception e) { /* ignored */
}
if (name != null) {
buff.append("; name=\"").append(name).append('"');
}
if (this.notificationOnly) {
buff.append("; notificationOnly=").append(this.notificationOnly);
}
}
public InternalDistributedMember getRecipient() {
return getRecipients()[0];
}
public void setOperation(Operation op) {
// override in subclasses holding operations
}
/**
* added to support old value to be written on wire.
* @param value true or false
* @since 5.5
*/
public void setHasOldValue(boolean value) {
// override in subclasses which need old value to be serialized.
// overridden by classes like PutMessage, DestroyMessage.
}
/**
* added to support routing of notification-only messages to clients
*/
public void setFilterInfo(FilterRoutingInfo filterInfo) {
// subclasses that support routing to clients should reimplement this method
}
/*
public void appendOldValueToMessage(EntryEventImpl event) {
}*/
public void setSendDeltaWithFullValue(boolean bool) {
this.sendDeltaWithFullValue = bool;
}
/**
* A processor on which to await a response from the {@link PartitionMessage}
* recipient, capturing any CacheException thrown by the recipient and handle
* it as an expected exception.
*
* @author Mitch Thomas
* @since 5.0
* @see #waitForCacheException()
*/
public static class PartitionResponse extends DirectReplyProcessor {
/**
* The exception thrown when the recipient does not reply
*/
volatile ForceReattemptException prce;
/**
* Whether a response has been received
*/
volatile boolean responseReceived;
/**
* whether a response is required
*/
boolean responseRequired;
final transient TXStateInterface txState;
volatile THashMap exceptions;
public PartitionResponse(InternalDistributedSystem dm, Set initMembers,
final TXStateInterface tx) {
this(dm, initMembers, true, tx);
}
public PartitionResponse(InternalDistributedSystem dm, Set initMembers,
boolean register, final TXStateInterface tx) {
super(dm, initMembers);
this.txState = tx;
if (register) {
register();
}
}
public PartitionResponse(InternalDistributedSystem dm,
InternalDistributedMember member) {
this(dm, member, true);
}
public PartitionResponse(InternalDistributedSystem dm,
InternalDistributedMember member, boolean register) {
// all callers to this method are currently non-transactional
this(dm, member, register, null);
}
public PartitionResponse(InternalDistributedSystem dm,
InternalDistributedMember member, boolean register,
final TXStateInterface tx) {
super(dm, member);
this.txState = tx;
if (register) {
register();
}
}
/**
* require a response message to be received
*/
public void requireResponse() {
this.responseRequired = true;
}
@Override
public void memberDeparted(final InternalDistributedMember id, final boolean crashed) {
if (id != null) {
if (removeMember(id, true)) {
this.prce = new ForceReattemptException(LocalizedStrings.PartitionMessage_PARTITIONRESPONSE_GOT_MEMBERDEPARTED_EVENT_FOR_0_CRASHED_1.toLocalizedString(new Object[] {id, Boolean.valueOf(crashed)}));
}
checkIfDone();
} else {
Exception e = new Exception(LocalizedStrings.PartitionMessage_MEMBERDEPARTED_GOT_NULL_MEMBERID.toLocalizedString());
getDistributionManager().getLoggerI18n().info(LocalizedStrings.PartitionMessage_MEMBERDEPARTED_GOT_NULL_MEMBERID_CRASHED_0, Boolean.valueOf(crashed), e);
}
}
/**
* Waits for the response from the {@link PartitionMessage}'s recipient
* @throws CacheException if the recipient threw a cache exception during message processing
* @throws ForceReattemptException if the recipient left the distributed system before the response
* was received.
* @throws PrimaryBucketException
*/
final public void waitForCacheException()
throws CacheException, ForceReattemptException, PrimaryBucketException {
try {
waitForRepliesUninterruptibly();
if (this.prce!=null || (this.responseRequired && !this.responseReceived)) {
throw new ForceReattemptException(LocalizedStrings.PartitionMessage_ATTEMPT_FAILED.toLocalizedString(), this.prce);
}
}
catch (ReplyException e) {
Throwable t = e.getCause();
if (t instanceof CacheException) {
throw (CacheException)t;
}
else if (t instanceof ForceReattemptException) {
ForceReattemptException ft = (ForceReattemptException)t;
// See FetchEntriesMessage, which can marshal a ForceReattempt
// across to the sender
ForceReattemptException fre = new ForceReattemptException(LocalizedStrings.PartitionMessage_PEER_REQUESTS_REATTEMPT.toLocalizedString(), t);
if (ft.hasHash()) {
fre.setHash(ft.getHash());
}
throw fre;
}
else if (t instanceof PrimaryBucketException) {
// See FetchEntryMessage, GetMessage, InvalidateMessage,
// PutMessage
// which can marshal a ForceReattemptacross to the sender
throw new PrimaryBucketException(LocalizedStrings.PartitionMessage_PEER_FAILED_PRIMARY_TEST.toLocalizedString(), t);
}
else if (t instanceof CancelException) {
if (getDistributionManager().getLoggerI18n().fineEnabled()) {
getDistributionManager().getLoggerI18n().fine("PartitionResponse got CacheClosedException from "
+ e.getSender() + ", throwing ForceReattemptException");
}
throw new ForceReattemptException(LocalizedStrings.PartitionMessage_PARTITIONRESPONSE_GOT_REMOTE_CACHECLOSEDEXCEPTION.toLocalizedString(), t);
}
else if (t instanceof DiskAccessException) {
if (getDistributionManager().getLoggerI18n().fineEnabled()) {
getDistributionManager().getLoggerI18n().fine("PartitionResponse got DiskAccessException from "
+ e.getSender() + ", throwing ForceReattemptException");
}
throw new ForceReattemptException(LocalizedStrings.PartitionMessage_PARTITIONRESPONSE_GOT_REMOTE_CACHECLOSEDEXCEPTION.toLocalizedString(), t);
}
else if (t instanceof LowMemoryException) {
if (getDistributionManager().getLoggerI18n().fineEnabled()) {
getDistributionManager().getLoggerI18n().fine("PartitionResponse re-throwing remote LowMemoryException from "
+ e.getSender(), t);
}
throw (LowMemoryException) t;
}
e.handleAsUnexpected();
}
}
@SuppressWarnings({ "unchecked", "rawtypes" })
public final Map getExceptions() {
if (this.exceptions != null) {
synchronized (this) {
return new THashMap((Map)this.exceptions);
}
}
return null;
}
@Override
protected final boolean stopBecauseOfExceptions() {
// do not stop in transactions since we have to ensure that commit or
// rollback is fired only after everything is done
if (this.txState == null) {
return super.stopBecauseOfExceptions();
}
return false;
}
@Override
protected final synchronized void processException(
final DistributionMessage msg, final ReplyException ex) {
if (this.exceptions == null) {
this.exceptions = new THashMap();
}
this.exceptions.put(msg.getSender(), ex);
super.processException(msg, ex);
}
/* overridden from ReplyProcessor21 */
@Override
public void process(DistributionMessage msg) {
this.responseReceived = true;
super.process(msg);
}
}
}