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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.partitioned;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.Collections;
import java.util.Set;
import org.apache.logging.log4j.Logger;
import org.apache.geode.DataSerializer;
import org.apache.geode.cache.CacheException;
import org.apache.geode.distributed.internal.ClusterDistributionManager;
import org.apache.geode.distributed.internal.DirectReplyProcessor;
import org.apache.geode.distributed.internal.DistributionManager;
import org.apache.geode.distributed.internal.DistributionMessage;
import org.apache.geode.distributed.internal.DistributionStats;
import org.apache.geode.distributed.internal.InternalDistributedSystem;
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.cache.ForceReattemptException;
import org.apache.geode.internal.cache.PartitionedRegion;
import org.apache.geode.internal.cache.PartitionedRegionDataStore;
import org.apache.geode.internal.cache.PrimaryBucketException;
import org.apache.geode.internal.logging.log4j.LogMarker;
import org.apache.geode.internal.serialization.DeserializationContext;
import org.apache.geode.internal.serialization.SerializationContext;
import org.apache.geode.logging.internal.log4j.api.LogService;
public class ContainsKeyValueMessage extends PartitionMessageWithDirectReply {
private static final Logger logger = LogService.getLogger();
private boolean valueCheck;
private Object key;
private Integer bucketId;
public ContainsKeyValueMessage() {
super();
}
public ContainsKeyValueMessage(InternalDistributedMember recipient, int regionId,
DirectReplyProcessor processor, Object key, Integer bucketId, boolean valueCheck) {
super(recipient, regionId, processor);
this.valueCheck = valueCheck;
this.key = key;
this.bucketId = bucketId;
}
/**
* Sends a PartitionedRegion message for either
* {@link org.apache.geode.cache.Region#containsKey(Object)}or
* {@link org.apache.geode.cache.Region#containsValueForKey(Object)} depending on the
* valueCheck argument
*
* @param recipient the member that the contains keys/value message is sent to
* @param r the PartitionedRegion that contains the bucket
* @param key the key to be queried
* @param bucketId the identity of the bucket to be queried
* @param valueCheck true if {@link org.apache.geode.cache.Region#containsValueForKey(Object)} is
* desired, false if {@link org.apache.geode.cache.Region#containsKey(Object)}is desired
* @return the processor used to read the returned keys
* @throws ForceReattemptException if the peer is no longer available
*/
public static ContainsKeyValueResponse send(InternalDistributedMember recipient,
PartitionedRegion r, Object key, Integer bucketId, boolean valueCheck)
throws ForceReattemptException {
Assert.assertTrue(recipient != null, "PRDistribuedContainsKeyValueMessage NULL reply message");
ContainsKeyValueResponse p =
new ContainsKeyValueResponse(r.getSystem(), Collections.singleton(recipient), key);
ContainsKeyValueMessage m =
new ContainsKeyValueMessage(recipient, r.getPRId(), p, key, bucketId, valueCheck);
m.setTransactionDistributed(r.getCache().getTxManager().isDistributed());
Set failures = r.getDistributionManager().putOutgoing(m);
if (failures != null && failures.size() > 0) {
throw new ForceReattemptException(
String.format("Failed sending < %s >", m));
}
return p;
}
@Override
public boolean isSevereAlertCompatible() {
// allow forced-disconnect processing for all cache op messages
return true;
}
@Override
protected boolean operateOnPartitionedRegion(ClusterDistributionManager dm, PartitionedRegion r,
long startTime) throws CacheException, ForceReattemptException {
PartitionedRegionDataStore ds = r.getDataStore();
final boolean replyVal;
if (ds != null) {
try {
if (this.valueCheck) {
replyVal = ds.containsValueForKeyLocally(this.bucketId, this.key);
} else {
replyVal = ds.containsKeyLocally(this.bucketId, this.key);
}
} catch (PRLocallyDestroyedException pde) {
throw new ForceReattemptException(
"Enountered PRLocallyDestroyedException",
pde);
}
r.getPrStats().endPartitionMessagesProcessing(startTime);
ContainsKeyValueReplyMessage.send(getSender(), getProcessorId(), getReplySender(dm),
replyVal);
} else {
logger.fatal("Partitioned Region <> is not configured to store data",
r.getFullPath());
ForceReattemptException fre = new ForceReattemptException(
String.format("Partitioned Region %s on %s is not configured to store data",
new Object[] {r.getFullPath(), dm.getId()}));
fre.setHash(key.hashCode());
throw fre;
}
// Unless there was an exception thrown, this message handles sending the
// response
return false;
}
@Override
protected void appendFields(StringBuilder buff) {
super.appendFields(buff);
buff.append("; valueCheck=").append(this.valueCheck).append("; key=").append(this.key)
.append("; bucketId=").append(this.bucketId);
}
@Override
public int getDSFID() {
return PR_CONTAINS_KEY_VALUE_MESSAGE;
}
@Override
public void fromData(DataInput in,
DeserializationContext context) throws IOException, ClassNotFoundException {
super.fromData(in, context);
this.key = DataSerializer.readObject(in);
this.valueCheck = in.readBoolean();
this.bucketId = Integer.valueOf(in.readInt());
}
@Override
public void toData(DataOutput out,
SerializationContext context) throws IOException {
super.toData(out, context);
DataSerializer.writeObject(this.key, out);
out.writeBoolean(this.valueCheck);
out.writeInt(this.bucketId.intValue());
}
public static class ContainsKeyValueReplyMessage extends ReplyMessage {
/** Propagated exception from remote node to operation initiator */
private boolean containsKeyValue;
/**
* Empty constructor to conform to DataSerializable interface
*/
public ContainsKeyValueReplyMessage() {}
private ContainsKeyValueReplyMessage(int processorId, boolean containsKeyValue) {
this.processorId = processorId;
this.containsKeyValue = containsKeyValue;
}
/** Send an ack */
public static void send(InternalDistributedMember recipient, int processorId,
ReplySender replySender, boolean containsKeyValue) {
Assert.assertTrue(recipient != null, "ContainsKeyValueReplyMessage NULL reply message");
ContainsKeyValueReplyMessage m =
new ContainsKeyValueReplyMessage(processorId, containsKeyValue);
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 DistributionManager dm, ReplyProcessor21 processor) {
final long startTime = getTimestamp();
if (processor == null) {
if (logger.isTraceEnabled(LogMarker.DM_VERBOSE)) {
logger.trace(LogMarker.DM_VERBOSE, "ContainsKeyValueReplyMessage processor not found");
}
return;
}
processor.process(this);
if (logger.isTraceEnabled(LogMarker.DM_VERBOSE)) {
logger.trace(LogMarker.DM_VERBOSE, "{} Processed {}", processor, this);
}
dm.getStats().incReplyMessageTime(DistributionStats.getStatTime() - startTime);
}
@Override
public int getDSFID() {
return PR_CONTAINS_KEY_VALUE_REPLY_MESSAGE;
}
@Override
public void fromData(DataInput in,
DeserializationContext context) throws IOException, ClassNotFoundException {
super.fromData(in, context);
this.containsKeyValue = in.readBoolean();
}
@Override
public void toData(DataOutput out,
SerializationContext context) throws IOException {
super.toData(out, context);
out.writeBoolean(this.containsKeyValue);
}
@Override
public String toString() {
StringBuffer sb = new StringBuffer();
sb.append("ContainsKeyValueReplyMessage ").append("processorid=").append(this.processorId)
.append(" returning ").append(doesItContainKeyValue());
return sb.toString();
}
public boolean doesItContainKeyValue() {
return this.containsKeyValue;
}
}
/**
* A processor to capture the value returned by
* {@link org.apache.geode.internal.cache.partitioned.ContainsKeyValueMessage.ContainsKeyValueReplyMessage}
*
* @since GemFire 5.0
*/
public static class ContainsKeyValueResponse extends PartitionResponse {
private volatile boolean returnValue;
private volatile boolean returnValueReceived;
final Object key;
public ContainsKeyValueResponse(InternalDistributedSystem ds, Set recipients, Object key) {
super(ds, recipients, false);
this.key = key;
}
@Override
public void process(DistributionMessage msg) {
try {
if (msg instanceof ContainsKeyValueReplyMessage) {
ContainsKeyValueReplyMessage reply = (ContainsKeyValueReplyMessage) msg;
this.returnValue = reply.doesItContainKeyValue();
this.returnValueReceived = true;
if (logger.isTraceEnabled(LogMarker.DM_VERBOSE)) {
logger.trace(LogMarker.DM_VERBOSE, "ContainsKeyValueResponse return value is {}",
this.returnValue);
}
}
} finally {
super.process(msg);
}
}
/**
* @return Set the keys associated with the bucketid of the {@link ContainsKeyValueMessage}
* @throws ForceReattemptException if the peer is no longer available
* @throws PrimaryBucketException if the instance of the bucket that received this operation was
* not primary
*/
public boolean waitForContainsResult() throws PrimaryBucketException, ForceReattemptException {
try {
waitForCacheException();
} catch (ForceReattemptException rce) {
rce.checkKey(key);
throw rce;
} catch (CacheException ce) {
logger.debug("ContainsKeyValueResponse got remote CacheException; forcing reattempt. {}",
ce.getMessage(), ce);
throw new ForceReattemptException(
"ContainsKeyValueResponse got remote CacheException; forcing reattempt.",
ce);
}
if (!this.returnValueReceived) {
throw new ForceReattemptException(
"no return value received");
}
return this.returnValue;
}
}
}