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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.Set;
import org.apache.logging.log4j.Logger;
import org.apache.geode.CancelException;
import org.apache.geode.DataSerializer;
import org.apache.geode.cache.PartitionedRegionStorageException;
import org.apache.geode.distributed.internal.ClusterDistributionManager;
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.OperationExecutors;
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.membership.InternalDistributedMember;
import org.apache.geode.internal.Assert;
import org.apache.geode.internal.InternalDataSerializer;
import org.apache.geode.internal.cache.FixedPartitionAttributesImpl;
import org.apache.geode.internal.cache.ForceReattemptException;
import org.apache.geode.internal.cache.Node;
import org.apache.geode.internal.cache.PartitionedRegion;
import org.apache.geode.internal.cache.PartitionedRegionHelper;
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;
/**
* A request from an accessor to a datastore telling it to direct the creation of a bucket. This
* request is somewhat of a hack. With 6.0, we no longer recover redundancy when a member crashes.
* However, if the member directing the creation of a bucket crashes, that will leave us with low
* redundancy. We decided it was not good behavior to leave the system with impaired redundancy if
* an accessor crashes. Hence, by forcing a datastore to direct the creation of the bucket, at least
* we will expect the redundancy to be impaired if that datastore crashes (even if it never hosted
* that bucket).
*
* @since GemFire 6.0
*
*/
public class CreateBucketMessage extends PartitionMessage {
private static final Logger logger = LogService.getLogger();
/** The key associated with the value that must be sent */
private int bucketId;
/** The value associated with the key that must be sent */
private int bucketSize;
/**
* Empty constructor to satisfy {@link DataSerializer} requirements
*/
public CreateBucketMessage() {}
private CreateBucketMessage(InternalDistributedMember recipient, int regionId,
ReplyProcessor21 processor, int bucketId, int bucketSize) {
super(recipient, regionId, processor);
this.bucketId = bucketId;
this.bucketSize = bucketSize;
}
public CreateBucketMessage(DataInput in) throws IOException, ClassNotFoundException {
fromData(in, InternalDataSerializer.createDeserializationContext(in));
}
@Override
public int getProcessorType() {
return OperationExecutors.WAITING_POOL_EXECUTOR;
}
/**
* Sends a PartitionedRegion manage bucket request to the recipient
*
* @param recipient the member to which the bucket manage request is sent
* @param r the PartitionedRegion to which the bucket belongs
* @param bucketId the unique identifier of the bucket
* @param bucketSize the size in bytes of the bucket
* @return the processor used to fetch the returned Node if any
* @throws ForceReattemptException if the peer is no longer available
*/
public static NodeResponse send(InternalDistributedMember recipient, PartitionedRegion r,
int bucketId, int bucketSize) throws ForceReattemptException {
Assert.assertTrue(recipient != null, "CreateBucketMessage NULL recipient");
NodeResponse p = new NodeResponse(r.getSystem(), recipient);
CreateBucketMessage m =
new CreateBucketMessage(recipient, r.getPRId(), p, bucketId, bucketSize);
m.setTransactionDistributed(r.getCache().getTxManager().isDistributed());
p.enableSevereAlertProcessing();
Set failures = r.getDistributionManager().putOutgoing(m);
if (failures != null && failures.size() > 0) {
throw new ForceReattemptException("Failed sending <" + m + ">");
}
return p;
}
/**
* This method is called upon receipt and make the desired changes to the PartitionedRegion Note:
* It is very important that this message does NOT cause any deadlocks as the sender will wait
* indefinitely for the acknowledgement
*/
@Override
protected boolean operateOnPartitionedRegion(ClusterDistributionManager dm, PartitionedRegion r,
long startTime) {
if (logger.isTraceEnabled(LogMarker.DM_VERBOSE)) {
logger.trace(LogMarker.DM_VERBOSE, "CreateBucketMessage operateOnRegion: {}",
r.getFullPath());
}
// This is to ensure that initialization is complete before bucket creation request is
// serviced. BUGFIX for 35888
if (!r.isInitialized()) {
// This VM is NOT ready to manage a new bucket, refuse operation
CreateBucketReplyMessage.sendResponse(getSender(), getProcessorId(), dm, null);
return false;
}
// For FPR, for given bucket id find out the partition to which this bucket
// belongs
String partitionName = null;
if (r.isFixedPartitionedRegion()) {
FixedPartitionAttributesImpl fpa =
PartitionedRegionHelper.getFixedPartitionAttributesForBucket(r, bucketId);
partitionName = fpa.getPartitionName();
}
r.checkReadiness();
InternalDistributedMember primary = r.getRedundancyProvider().createBucketAtomically(bucketId,
bucketSize, false, partitionName);
r.getPrStats().endPartitionMessagesProcessing(startTime);
CreateBucketReplyMessage.sendResponse(getSender(), getProcessorId(), dm, primary);
return false;
}
@Override
public int getDSFID() {
return PR_CREATE_BUCKET_MESSAGE;
}
@Override
public void fromData(DataInput in,
DeserializationContext context) throws IOException, ClassNotFoundException {
super.fromData(in, context);
this.bucketId = in.readInt();
this.bucketSize = in.readInt();
}
@Override
public void toData(DataOutput out,
SerializationContext context) throws IOException {
super.toData(out, context);
out.writeInt(this.bucketId);
out.writeInt(this.bucketSize);
}
/**
* Assists the toString method in reporting the contents of this message
*
* @see PartitionMessage#toString()
*/
@Override
protected void appendFields(StringBuilder buff) {
super.appendFields(buff);
buff.append("; bucketId=").append(this.bucketId).append("; bucketSize=")
.append(this.bucketSize);
}
@Override
public boolean isSevereAlertCompatible() {
// since bucket management happens during entry operations, it
// must be severe-alert compatible
return true;
}
/**
* A class that contains the reply to a {@link CreateBucketMessage} message which contains the
* {@link Node} that has accepted to manage the bucket.
*
* @since GemFire 5.0
*/
public static class CreateBucketReplyMessage extends ReplyMessage {
private InternalDistributedMember primary;
/**
* Empty constructor to conform to DataSerializable interface
*/
public CreateBucketReplyMessage() {}
public CreateBucketReplyMessage(DataInput in) throws IOException, ClassNotFoundException {
fromData(in, InternalDataSerializer.createDeserializationContext(in));
}
private CreateBucketReplyMessage(int processorId, InternalDistributedMember primary) {
setProcessorId(processorId);
this.primary = primary;
}
/**
* Accept the request to manage the bucket
*
* @param recipient the requesting node
* @param processorId the identity of the processor the requesting node is waiting on
* @param dm the distribution manager used to send the acceptance message
*/
public static void sendResponse(InternalDistributedMember recipient, int processorId,
DistributionManager dm, InternalDistributedMember primary) {
Assert.assertTrue(recipient != null, "CreateBucketReplyMessage NULL reply message");
CreateBucketReplyMessage m = new CreateBucketReplyMessage(processorId, primary);
m.setRecipient(recipient);
dm.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, final ReplyProcessor21 processor) {
final long startTime = getTimestamp();
if (logger.isTraceEnabled(LogMarker.DM_VERBOSE)) {
logger.trace(LogMarker.DM_VERBOSE,
"CreateBucketReplyMessage process invoking reply processor with processorId:"
+ this.processorId);
}
if (processor == null) {
if (logger.isTraceEnabled(LogMarker.DM_VERBOSE)) {
logger.trace(LogMarker.DM_VERBOSE, "CreateBucketReplyMessage 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 void toData(DataOutput out,
SerializationContext context) throws IOException {
super.toData(out, context);
out.writeBoolean(primary != null);
if (primary != null) {
InternalDataSerializer.invokeToData(primary, out);
}
}
@Override
public int getDSFID() {
return PR_CREATE_BUCKET_REPLY_MESSAGE;
}
@Override
public void fromData(DataInput in,
DeserializationContext context) throws IOException, ClassNotFoundException {
super.fromData(in, context);
boolean hasPrimary = in.readBoolean();
if (hasPrimary) {
primary = new InternalDistributedMember();
InternalDataSerializer.invokeFromData(primary, in);
}
}
@Override
public String toString() {
return new StringBuffer().append("CreateBucketReplyMessage ").append("processorid=")
.append(this.processorId).toString();
}
}
/**
* A processor to capture the {@link Node} returned by {@link CreateBucketMessage}
*
* @since GemFire 5.0
*/
public static class NodeResponse extends ReplyProcessor21 {
/**
* the message that triggers return from waitForAcceptance. This will be null if the target
* member exited
*/
private volatile CreateBucketReplyMessage msg;
public NodeResponse(InternalDistributedSystem ds, InternalDistributedMember recipient) {
super(ds, recipient);
}
@Override
public void process(DistributionMessage msg) {
try {
if (msg instanceof CreateBucketReplyMessage) {
CreateBucketReplyMessage reply = (CreateBucketReplyMessage) msg;
this.msg = reply;
if (logger.isTraceEnabled(LogMarker.DM_VERBOSE)) {
logger.trace(LogMarker.DM_VERBOSE, "NodeResponse return value is ");
}
} else {
Assert.assertTrue(msg instanceof ReplyMessage);
}
} finally {
super.process(msg);
}
}
/**
* Wait for the response to a {@link CreateBucketMessage} request.
*
* @return true if the node sent the request is managing the bucket
* @throws ForceReattemptException if the peer is no longer available
*/
public InternalDistributedMember waitForResponse() throws ForceReattemptException {
try {
waitForRepliesUninterruptibly();
} catch (ReplyException e) {
Throwable t = e.getCause();
if (t instanceof CancelException) {
logger.debug(
"NodeResponse got remote cancellation, throwing PartitionedRegionCommunication Exception {}",
t.getMessage(), t);
return null;
}
if (t instanceof PRLocallyDestroyedException) {
logger.debug(
"NodeResponse got local destroy on the PartitionRegion , throwing ForceReattemptException {}",
t.getMessage(), t);
return null;
}
if (t instanceof ForceReattemptException) {
logger.debug(
"NodeResponse got ForceReattemptException due to local destroy on the PartitionRegion {}",
t.getMessage(), t);
return null;
}
if (t instanceof PartitionedRegionStorageException) {
throw new PartitionedRegionStorageException(t.getMessage(), t);
}
e.handleCause();
}
CreateBucketReplyMessage message = this.msg;
if (message == null) {
return null;
} else {
return (message.primary);
}
}
}
}