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Apache Geode provides a database-like consistency model, reliable transaction processing and a shared-nothing architecture to maintain very low latency performance with high concurrency processing
/*
* Licensed to the Apache Software Foundation (ASF) under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional information regarding
* copyright ownership. The ASF licenses this file to You 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.
*/
package org.apache.geode.internal.cache;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
import org.apache.logging.log4j.Logger;
import org.apache.geode.CancelException;
import org.apache.geode.DataSerializer;
import org.apache.geode.cache.CommitIncompleteException;
import org.apache.geode.cache.RegionDestroyedException;
import org.apache.geode.cache.UnsupportedOperationInTransactionException;
import org.apache.geode.distributed.DistributedMember;
import org.apache.geode.distributed.internal.DM;
import org.apache.geode.distributed.internal.DistributionManager;
import org.apache.geode.distributed.internal.DistributionMessage;
import org.apache.geode.distributed.internal.ReplyException;
import org.apache.geode.distributed.internal.ReplyMessage;
import org.apache.geode.distributed.internal.ReplyProcessor21;
import org.apache.geode.distributed.internal.ReplySender;
import org.apache.geode.distributed.internal.membership.InternalDistributedMember;
import org.apache.geode.internal.Assert;
import org.apache.geode.internal.DataSerializableFixedID;
import org.apache.geode.internal.Version;
import org.apache.geode.internal.cache.TXEntryState.DistTxThinEntryState;
import org.apache.geode.internal.cache.locks.TXLockService;
import org.apache.geode.internal.cache.tx.DistTxEntryEvent;
import org.apache.geode.internal.i18n.LocalizedStrings;
import org.apache.geode.internal.logging.LogService;
import org.apache.geode.internal.logging.log4j.LogMarker;
/**
*
*/
public final class DistTXPrecommitMessage extends TXMessage {
private static final Logger logger = LogService.getLogger();
ArrayList secondaryTransactionalOperations;
/** for deserialization */
public DistTXPrecommitMessage() {}
public DistTXPrecommitMessage(TXId txUniqId, InternalDistributedMember onBehalfOfClientMember,
ReplyProcessor21 processor) {
super(txUniqId.getUniqId(), onBehalfOfClientMember, processor);
}
@Override
public int getDSFID() {
return DISTTX_PRE_COMMIT_MESSAGE;
}
@Override
protected boolean operateOnTx(TXId txId, DistributionManager dm) throws RemoteOperationException {
GemFireCacheImpl cache = GemFireCacheImpl.getInstance();
TXManagerImpl txMgr = cache.getTXMgr();
if (logger.isDebugEnabled()) {
logger.debug("DistTXPrecommitMessage.operateOnTx: Tx {} with Secondaries List {}", txId,
this.secondaryTransactionalOperations);
}
// should not be commited before
assert (!txMgr.isHostedTxRecentlyCompleted(txId));
// @see TXCommitMessage.process(DistributionManager)
TXLockService.createDTLS(); // fix bug 38843; no-op if already created
final TXStateProxy txStateProxy = txMgr.getTXState();
boolean precommitSuccess = true;
TreeMap> entryStateSortedMap =
new TreeMap>();
// [DISTTX] TODO - Test valid scenarios of null txState
// if no TXState was created (e.g. due to only getEntry/size operations
// that don't start remote TX) then ignore
if (txStateProxy != null) {
if (!txStateProxy.isDistTx() || !txStateProxy.isTxStateProxy()
|| txStateProxy.isCreatedOnDistTxCoordinator()) {
throw new UnsupportedOperationInTransactionException(
LocalizedStrings.DISTTX_TX_EXPECTED.toLocalizedString("DistTXStateProxyImplOnDatanode",
txStateProxy.getClass().getSimpleName()));
}
((DistTXStateProxyImplOnDatanode) txStateProxy).setPreCommitMessage(this);
/*
* Perform precommit
*
* [DISTTX] Handle different exceptions here
*/
txMgr.precommit();
precommitSuccess = ((DistTXStateProxyImplOnDatanode) txStateProxy).getPreCommitResponse();
if (precommitSuccess) {
precommitSuccess = ((DistTXStateProxyImplOnDatanode) txStateProxy)
.populateDistTxEntryStateList(entryStateSortedMap);
if (!precommitSuccess) {
entryStateSortedMap.clear();
if (logger.isDebugEnabled()) {
logger.debug("DistTXPrecommitMessage.operateOnTx: Tx {} Failed while creating response",
txId);
}
}
} else {
if (logger.isDebugEnabled()) {
logger.debug(
"DistTXPrecommitMessage.operateOnTx: Tx {} Failed while applying changes for replicates",
txId);
}
}
}
// Send Response : Send false if conflict
DistTxPrecommitResponse finalResponse = new DistTxPrecommitResponse(precommitSuccess,
new ArrayList>(entryStateSortedMap.values()));
DistTXPrecommitReplyMessage.send(getSender(), getProcessorId(), finalResponse,
getReplySender(dm));
// return false so there isn't another reply
return false;
}
@Override
public void toData(DataOutput out) throws IOException {
super.toData(out);
DataSerializer.writeArrayList((ArrayList) secondaryTransactionalOperations, out);
}
@Override
public void fromData(DataInput in) throws IOException, ClassNotFoundException {
super.fromData(in);
this.secondaryTransactionalOperations = DataSerializer.readArrayList(in);
}
@Override
public boolean isTransactionDistributed() {
return true;
}
@Override
public boolean canStartRemoteTransaction() {
return true;
}
public ArrayList getSecondaryTransactionalOperations() {
return secondaryTransactionalOperations;
}
public void setSecondaryTransactionalOperations(
ArrayList secondaryTransactionalOperations) {
this.secondaryTransactionalOperations = secondaryTransactionalOperations;
}
/**
* This is the reply to a {@link DistTXPrecommitMessage}.
*/
public static final class DistTXPrecommitReplyMessage extends ReplyMessage {
private transient DistTxPrecommitResponse commitResponse;
/**
* Empty constructor to conform to DataSerializable interface
*/
public DistTXPrecommitReplyMessage() {}
public DistTXPrecommitReplyMessage(DataInput in) throws IOException, ClassNotFoundException {
fromData(in);
}
private DistTXPrecommitReplyMessage(int processorId, DistTxPrecommitResponse val) {
setProcessorId(processorId);
this.commitResponse = val;
}
/** GetReplyMessages are always processed in-line */
@Override
public boolean getInlineProcess() {
return true;
}
/**
* Return the value from the get operation, serialize it bytes as late as possible to avoid
* making un-neccesary byte[] copies. De-serialize those same bytes as late as possible to avoid
* using precious threads (aka P2P readers).
*
* @param recipient the origin VM that performed the get
* @param processorId the processor on which the origin thread is waiting
* @param val the raw value that will eventually be serialized
* @param replySender distribution manager used to send the reply
*/
public static void send(InternalDistributedMember recipient, int processorId,
DistTxPrecommitResponse val, ReplySender replySender) throws RemoteOperationException {
Assert.assertTrue(recipient != null, "DistTXPhaseOneCommitReplyMessage NULL reply message");
DistTXPrecommitReplyMessage m = new DistTXPrecommitReplyMessage(processorId, val);
m.setRecipient(recipient);
replySender.putOutgoing(m);
}
/**
* Processes this message. This method is invoked by the receiver of the message.
*
* @param dm the distribution manager that is processing the message.
*/
@Override
public void process(final DM dm, ReplyProcessor21 processor) {
final long startTime = getTimestamp();
if (logger.isTraceEnabled(LogMarker.DM)) {
logger.trace(LogMarker.DM,
"DistTXPhaseOneCommitReplyMessage process invoking reply processor with processorId:{}",
this.processorId);
}
if (processor == null) {
if (logger.isTraceEnabled(LogMarker.DM)) {
logger.trace(LogMarker.DM, "DistTXPhaseOneCommitReplyMessage processor not found");
}
return;
}
processor.process(this);
}
@Override
public int getDSFID() {
return DISTTX_PRE_COMMIT_REPLY_MESSAGE;
}
@Override
public void toData(DataOutput out) throws IOException {
super.toData(out);
DataSerializer.writeObject(commitResponse, out);
}
@Override
public void fromData(DataInput in) throws IOException, ClassNotFoundException {
super.fromData(in);
this.commitResponse = (DistTxPrecommitResponse) DataSerializer.readObject(in);
}
@Override
public String toString() {
StringBuffer sb = new StringBuffer();
sb.append("DistTXPhaseOneCommitReplyMessage").append("processorid=").append(this.processorId)
.append(" reply to sender ").append(this.getSender());
return sb.toString();
}
public DistTxPrecommitResponse getCommitResponse() {
return commitResponse;
}
}
/**
* Reply processor which collects all CommitReplyExceptions for Dist Tx and emits a detailed
* failure exception if problems occur
*
* @see TXCommitMessage.CommitReplyProcessor
*
* [DISTTX] TODO see if need ReliableReplyProcessor21? departed members?
*/
public static final class DistTxPrecommitReplyProcessor extends ReplyProcessor21 {
private HashMap msgMap;
private Map commitResponseMap;
private transient TXId txIdent = null;
public DistTxPrecommitReplyProcessor(TXId txUniqId, DM dm, Set initMembers,
HashMap msgMap) {
super(dm, initMembers);
this.msgMap = msgMap;
// [DISTTX] TODO Do we need synchronised map?
this.commitResponseMap =
Collections.synchronizedMap(new HashMap());
this.txIdent = txUniqId;
}
@Override
public void process(DistributionMessage msg) {
if (msg instanceof DistTXPrecommitReplyMessage) {
DistTXPrecommitReplyMessage reply = (DistTXPrecommitReplyMessage) msg;
this.commitResponseMap.put(reply.getSender(), reply.getCommitResponse());
}
super.process(msg);
}
public void waitForPrecommitCompletion() {
try {
waitForRepliesUninterruptibly();
} catch (DistTxPrecommitExceptionCollectingException e) {
e.handlePotentialCommitFailure(msgMap);
}
}
@Override
protected void processException(DistributionMessage msg, ReplyException ex) {
if (msg instanceof ReplyMessage) {
synchronized (this) {
if (this.exception == null) {
// Exception Container
this.exception = new DistTxPrecommitExceptionCollectingException(txIdent);
}
DistTxPrecommitExceptionCollectingException cce =
(DistTxPrecommitExceptionCollectingException) this.exception;
if (ex instanceof CommitReplyException) {
CommitReplyException cre = (CommitReplyException) ex;
cce.addExceptionsFromMember(msg.getSender(), cre.getExceptions());
} else {
cce.addExceptionsFromMember(msg.getSender(), Collections.singleton(ex));
}
}
}
}
@Override
protected boolean stopBecauseOfExceptions() {
return false;
}
public Set getCacheClosedMembers() {
if (this.exception != null) {
DistTxPrecommitExceptionCollectingException cce =
(DistTxPrecommitExceptionCollectingException) this.exception;
return cce.getCacheClosedMembers();
} else {
return Collections.EMPTY_SET;
}
}
public Set getRegionDestroyedMembers(String regionFullPath) {
if (this.exception != null) {
DistTxPrecommitExceptionCollectingException cce =
(DistTxPrecommitExceptionCollectingException) this.exception;
return cce.getRegionDestroyedMembers(regionFullPath);
} else {
return Collections.EMPTY_SET;
}
}
public Map getCommitResponseMap() {
return commitResponseMap;
}
}
/**
* An Exception that collects many remote CommitExceptions
*
* @see TXCommitMessage.CommitExceptionCollectingException
*/
public static class DistTxPrecommitExceptionCollectingException extends ReplyException {
private static final long serialVersionUID = -2681117727592137893L;
/** Set of members that threw CacheClosedExceptions */
private final Set cacheExceptions;
/** key=region path, value=Set of members */
private final Map> regionExceptions;
/** List of exceptions that were unexpected and caused the tx to fail */
private final Map fatalExceptions;
private final TXId id;
/*
* [DISTTX] TODO Actually handle exceptions like commit conflict, primary bucket moved, etc
*/
public DistTxPrecommitExceptionCollectingException(TXId txIdent) {
this.cacheExceptions = new HashSet();
this.regionExceptions = new HashMap>();
this.fatalExceptions = new HashMap();
this.id = txIdent;
}
/**
* Determine if the commit processing was incomplete, if so throw a detailed exception
* indicating the source of the problem
*
* @param msgMap
*/
public void handlePotentialCommitFailure(
HashMap msgMap) {
if (fatalExceptions.size() > 0) {
StringBuffer errorMessage = new StringBuffer("Incomplete commit of transaction ").append(id)
.append(". Caused by the following exceptions: ");
for (Iterator i = fatalExceptions.entrySet().iterator(); i.hasNext();) {
Map.Entry me = (Map.Entry) i.next();
DistributedMember mem = (DistributedMember) me.getKey();
errorMessage.append(" From member: ").append(mem).append(" ");
List exceptions = (List) me.getValue();
for (Iterator ei = exceptions.iterator(); ei.hasNext();) {
Exception e = (Exception) ei.next();
errorMessage.append(e);
for (StackTraceElement ste : e.getStackTrace()) {
errorMessage.append("\n\tat ").append(ste);
}
if (ei.hasNext()) {
errorMessage.append("\nAND\n");
}
}
errorMessage.append(".");
}
throw new CommitIncompleteException(errorMessage.toString());
}
/* [DISTTX] TODO Not Sure if required */
// Mark any persistent members as offline
// handleClosedMembers(msgMap);
// handleRegionDestroyed(msgMap);
}
public Set getCacheClosedMembers() {
return this.cacheExceptions;
}
public Set getRegionDestroyedMembers(String regionFullPath) {
Set members = (Set) this.regionExceptions.get(regionFullPath);
if (members == null) {
members = Collections.EMPTY_SET;
}
return members;
}
/**
* Protected by (this)
*
* @param member
* @param exceptions
*/
public void addExceptionsFromMember(InternalDistributedMember member, Set exceptions) {
for (Iterator iter = exceptions.iterator(); iter.hasNext();) {
Exception ex = (Exception) iter.next();
if (ex instanceof CancelException) {
cacheExceptions.add(member);
} else if (ex instanceof RegionDestroyedException) {
String r = ((RegionDestroyedException) ex).getRegionFullPath();
Set members = regionExceptions.get(r);
if (members == null) {
members = new HashSet();
regionExceptions.put(r, members);
}
members.add(member);
} else {
List el = (List) this.fatalExceptions.get(member);
if (el == null) {
el = new ArrayList(2);
this.fatalExceptions.put(member, el);
}
el.add(ex);
}
}
}
}
public static final class DistTxPrecommitResponse implements DataSerializableFixedID {
private transient Boolean commitState;
private transient ArrayList> distTxEventList;
// Default constructor for serialisation
public DistTxPrecommitResponse() {}
public DistTxPrecommitResponse(boolean precommitSuccess,
ArrayList> eventList) {
this.commitState = precommitSuccess;
this.distTxEventList = eventList;
}
@Override
public Version[] getSerializationVersions() {
return null;
}
@Override
public int getDSFID() {
return DIST_TX_PRE_COMMIT_RESPONSE;
}
@Override
public void toData(DataOutput out) throws IOException {
DataSerializer.writeBoolean(commitState, out);
DataSerializer.writeArrayList(distTxEventList, out);
}
@Override
public void fromData(DataInput in) throws IOException, ClassNotFoundException {
this.commitState = DataSerializer.readBoolean(in);
this.distTxEventList = DataSerializer.readArrayList(in);
}
public Boolean getCommitState() {
return commitState;
}
public ArrayList> getDistTxEntryEventList() {
return distTxEventList;
}
}
}