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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 com.gemstone.gemfire.CancelException;
import com.gemstone.gemfire.DataSerializer;
import com.gemstone.gemfire.distributed.internal.DM;
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.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.NanoTimer;
import com.gemstone.gemfire.internal.cache.ForceReattemptException;
import com.gemstone.gemfire.internal.cache.PartitionedRegion;
import com.gemstone.gemfire.internal.cache.PartitionedRegionDataStore;
import com.gemstone.gemfire.internal.i18n.LocalizedStrings;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.Set;
/**
* Moves the bucket to the recipient's PartitionedRegionDataStore. The
* recipient will create an extra redundant copy of the bucket and then
* send a {@link RemoveBucketMessage} to the specified source for the bucket.
*
* Usage:
* MoveBucketResponse response = MoveBucketMessage.send(
* InternalDistributedMember, PartitionedRegion, int bucketId);
* if (response != null && response.waitForResponse()) {
* // bucket was moved
* }
*
* @author Kirk Lund
*/
public class MoveBucketMessage extends PartitionMessage {
private volatile int bucketId;
private volatile InternalDistributedMember source;
/**
* Empty constructor to satisfy {@link DataSerializer} requirements
*/
public MoveBucketMessage() {
}
private MoveBucketMessage(
InternalDistributedMember recipient,
int regionId,
ReplyProcessor21 processor,
int bucketId,
InternalDistributedMember source) {
super(recipient, regionId, processor, null);
this.bucketId = bucketId;
this.source = source;
}
/**
* Sends a message to move the bucket from source member to
* the recipient member.
*
* @param recipient the member to move the bucket to
* @param region the PartitionedRegion of the bucket
* @param bucketId the bucket to move
* @param source the member to move the bucket from
* @return the processor used to wait for the response
*/
public static MoveBucketResponse send(
InternalDistributedMember recipient,
PartitionedRegion region,
int bucketId,
InternalDistributedMember source) {
Assert.assertTrue(recipient != null,
"MoveBucketMessage NULL recipient");
MoveBucketResponse response = new MoveBucketResponse(
region.getSystem(), recipient, region);
MoveBucketMessage msg = new MoveBucketMessage(
recipient, region.getPRId(), response, bucketId, source);
Set failures =
region.getDistributionManager().putOutgoing(msg);
if (failures != null && failures.size() > 0) {
//throw new ForceReattemptException("Failed sending <" + msg + ">");
return null;
}
region.getPrStats().incPartitionMessagesSent();
return response;
}
public MoveBucketMessage(DataInput in)
throws IOException, ClassNotFoundException {
fromData(in);
}
@Override
public boolean isSevereAlertCompatible() {
// allow forced-disconnect processing for all cache op messages
return true;
}
@Override
protected final boolean operateOnPartitionedRegion(DistributionManager dm,
PartitionedRegion region,
long startTime)
throws ForceReattemptException {
PartitionedRegionDataStore dataStore = region.getDataStore();
boolean moved = dataStore.moveBucket(this.bucketId, this.source,true);
region.getPrStats().endPartitionMessagesProcessing(startTime);
MoveBucketReplyMessage.send(
getSender(), getProcessorId(), dm, null, moved);
return false;
}
@Override
protected void appendFields(StringBuilder buff) {
super.appendFields(buff);
buff.append("; bucketId=").append(this.bucketId);
buff.append("; source=").append(this.source);
}
public int getDSFID() {
return PR_MOVE_BUCKET_MESSAGE;
}
@Override
public void fromData(DataInput in)
throws IOException, ClassNotFoundException {
super.fromData(in);
this.bucketId = in.readInt();
this.source = (InternalDistributedMember) DataSerializer.readObject(in);
}
@Override
public void toData(DataOutput out)
throws IOException {
super.toData(out);
out.writeInt(this.bucketId);
DataSerializer.writeObject(this.source, out);
}
public static final class MoveBucketReplyMessage
extends ReplyMessage {
private boolean moved;
/**
* Empty constructor to conform to DataSerializable interface
*/
public MoveBucketReplyMessage() {
}
public MoveBucketReplyMessage(DataInput in)
throws IOException, ClassNotFoundException {
fromData(in);
}
private MoveBucketReplyMessage(
int processorId, ReplyException re, boolean moved) {
this.processorId = processorId;
this.moved = moved;
setException(re);
}
/** Send a reply */
public static void send(InternalDistributedMember recipient,
int processorId,
DM dm,
ReplyException re,
boolean moved) {
Assert.assertTrue(recipient != null,
"MoveBucketReplyMessage NULL recipient");
MoveBucketReplyMessage m =
new MoveBucketReplyMessage(processorId, re, moved);
m.setRecipient(recipient);
dm.putOutgoing(m);
}
boolean moved() {
return this.moved;
}
@Override
public void process(final DM dm, final ReplyProcessor21 processor) {
final long startTime = getTimestamp();
LogWriterI18n logger = dm.getLoggerI18n();
if (DistributionManager.VERBOSE) {
logger.fine("MoveBucketReplyMessage process invoking reply processor with processorId:"
+ this.processorId);
}
if (processor == null) {
if (DistributionManager.VERBOSE) {
logger.fine("MoveBucketReplyMessage processor not found");
}
return;
}
processor.process(this);
if (DistributionManager.VERBOSE) {
logger.info(LocalizedStrings.DEBUG, processor + " processed " + this);
}
dm.getStats().incReplyMessageTime(NanoTimer.getTime() - startTime);
}
@Override
public void toData(DataOutput out) throws IOException {
super.toData(out);
out.writeBoolean(this.moved);
}
@Override
public int getDSFID() {
return PR_MOVE_BUCKET_REPLY;
}
@Override
public void fromData(DataInput in) throws IOException,
ClassNotFoundException {
super.fromData(in);
this.moved = in.readBoolean();
}
@Override
public String toString() {
StringBuffer sb = new StringBuffer();
sb.append("MoveBucketReplyMessage ")
.append("processorid=").append(this.processorId)
.append(" moved=").append(this.moved)
.append(" reply to sender ").append(this.getSender());
return sb.toString();
}
}
/**
* A processor to capture the value returned by the
* MoveBucketReplyMessage
*/
public static class MoveBucketResponse extends PartitionResponse {
private volatile boolean moved = false;
public MoveBucketResponse(
InternalDistributedSystem ds,
InternalDistributedMember recipient,
PartitionedRegion theRegion) {
super(ds, recipient);
}
@Override
public void process(DistributionMessage msg) {
try {
if (msg instanceof MoveBucketReplyMessage) {
MoveBucketReplyMessage reply =
(MoveBucketReplyMessage) msg;
this.moved = reply.moved();
if (DistributionManager.VERBOSE) {
getDistributionManager().getLoggerI18n().fine(
"MoveBucketResponse is " + moved);
}
}
} finally {
super.process(msg);
}
}
/**
* Ignore any incoming exception from other VMs, we just want an
* acknowledgement that the message was processed.
*/
@Override
protected void processException(ReplyException ex) {
getDistributionManager().getLoggerI18n().fine(
"MoveBucketMessage ignoring exception", ex);
}
public boolean waitForResponse() {
try {
waitForRepliesUninterruptibly();
} catch(ReplyException e) {
Throwable t = e.getCause();
if (t instanceof CancelException) {
String msg = "MoveBucketMessage got remote cancellation,";
getDistributionManager().getLoggerI18n().fine(msg, t);
return false;
}
if (t instanceof PRLocallyDestroyedException) {
String msg = "MoveBucketMessage got local destroy on the PartitionRegion ";
getDistributionManager().getLoggerI18n().fine(msg, t);
return false;
}
if (t instanceof ForceReattemptException) {
String msg = "MoveBucketMessage got ForceReattemptException due to local destroy on the PartitionRegion";
getDistributionManager().getLoggerI18n().fine(msg, t);
return false;
}
e.handleAsUnexpected();
}
return this.moved;
}
}
}