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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.persistence;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
import com.gemstone.gemfire.CancelException;
import com.gemstone.gemfire.DataSerializer;
import com.gemstone.gemfire.SystemFailure;
import com.gemstone.gemfire.cache.Cache;
import com.gemstone.gemfire.cache.CacheFactory;
import com.gemstone.gemfire.cache.Region;
import com.gemstone.gemfire.cache.RegionDestroyedException;
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.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.InternalDataSerializer;
import com.gemstone.gemfire.internal.cache.DistributedRegion;
import com.gemstone.gemfire.internal.cache.GemFireCacheImpl;
import com.gemstone.gemfire.internal.cache.LocalRegion;
import com.gemstone.gemfire.internal.cache.PartitionedRegionHelper;
import com.gemstone.gemfire.internal.cache.partitioned.Bucket;
/**
* @author dsmith
*
*/
public class MembershipViewRequest extends
DistributionMessage implements MessageWithReply {
private String regionPath;
private int processorId;
private boolean targetReinitializing;
public MembershipViewRequest() {
}
public MembershipViewRequest(String regionPath, int processorId, boolean targetReinitializing) {
this.regionPath = regionPath;
this.processorId = processorId;
this.targetReinitializing = targetReinitializing;
}
public static PersistentMembershipView send(
InternalDistributedMember recipient, DM dm, String regionPath, boolean targetReinitializing) throws ReplyException {
MembershipViewRequestReplyProcessor processor = new MembershipViewRequestReplyProcessor(dm, recipient);
MembershipViewRequest msg = new MembershipViewRequest(regionPath, processor.getProcessorId(), targetReinitializing);
msg.setRecipient(recipient);
dm.putOutgoing(msg);
return processor.getResult();
}
public static Set send(
Set recipients, DM dm, String regionPath) throws ReplyException {
MembershipViewRequestReplyProcessor processor = new MembershipViewRequestReplyProcessor(dm, recipients);
MembershipViewRequest msg = new MembershipViewRequest(regionPath, processor.getProcessorId(), false);
msg.setRecipients(recipients);
dm.putOutgoing(msg);
return processor.getResults();
}
@Override
final public int getProcessorType() {
return this.targetReinitializing ? DistributionManager.WAITING_POOL_EXECUTOR :
DistributionManager.HIGH_PRIORITY_EXECUTOR;
}
@Override
protected void process(DistributionManager dm) {
LogWriterI18n log = dm.getLoggerI18n();
int initLevel = this.targetReinitializing ? LocalRegion.AFTER_INITIAL_IMAGE
: LocalRegion.ANY_INIT;
int oldLevel = LocalRegion.setThreadInitLevelRequirement(initLevel);
PersistentMembershipView view = null;
ReplyException exception = null;
try {
// get the region from the path, but do NOT wait on initialization,
// otherwise we could have a distributed deadlock
Cache cache = CacheFactory.getInstance(dm.getSystem());
Region region = cache.getRegion(this.regionPath);
PersistenceAdvisor persistenceAdvisor = null;
if(region instanceof DistributedRegion) {
persistenceAdvisor = ((DistributedRegion) region).getPersistenceAdvisor();
} else if ( region == null) {
Bucket proxy = PartitionedRegionHelper.getProxyBucketRegion(GemFireCacheImpl.getInstance(), this.regionPath, false);
if(proxy != null) {
persistenceAdvisor = proxy.getPersistenceAdvisor();
}
}
if(persistenceAdvisor != null) {
view= persistenceAdvisor.getMembershipView();
}
} catch (RegionDestroyedException e) {
// exception = new ReplyException(e);
log.fine(" " + this);
}
catch (CancelException e) {
// exception = new ReplyException(e);
log.fine(" " + this);
}
catch(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;
}
SystemFailure.checkFailure();
exception = new ReplyException(t);
}
finally {
LocalRegion.setThreadInitLevelRequirement(oldLevel);
MembershipViewReplyMessage replyMsg = new MembershipViewReplyMessage();
replyMsg.setRecipient(getSender());
replyMsg.setProcessorId(processorId);
replyMsg.view= view;
log.fine("MembershipViewRequest returning view " + view + " for region " + this.regionPath);
if(exception != null) {
replyMsg.setException(exception);
}
dm.putOutgoing(replyMsg);
}
}
public int getDSFID() {
return PERSISTENT_MEMBERSHIP_VIEW_REQUEST;
}
@Override
public void fromData(DataInput in) throws IOException,
ClassNotFoundException {
super.fromData(in);
processorId = in.readInt();
regionPath = DataSerializer.readString(in);
targetReinitializing = in.readBoolean();
}
@Override
public void toData(DataOutput out) throws IOException {
super.toData(out);
out.writeInt(processorId);
DataSerializer.writeString(regionPath, out);
out.writeBoolean(targetReinitializing);
}
private static class MembershipViewRequestReplyProcessor extends ReplyProcessor21 {
private final Set views = new HashSet();
public MembershipViewRequestReplyProcessor(DM dm,
InternalDistributedMember member) {
super(dm, member);
}
public MembershipViewRequestReplyProcessor(DM dm,
Set members) {
super(dm, members);
}
public PersistentMembershipView getResult() {
waitForRepliesUninterruptibly();
if(views.isEmpty()) {
//TODO prperist internationalize.
throw new ReplyException("Member departed");
}
return views.iterator().next();
}
public Set getResults() {
waitForRepliesUninterruptibly();
return views;
}
@Override
public void process(DistributionMessage msg) {
if(msg instanceof MembershipViewReplyMessage) {
PersistentMembershipView view = ((MembershipViewReplyMessage) msg).view;
InternalDistributedSystem.getLoggerI18n().fine("MembershipViewReplyProcessor received " + view);
if(view != null) {
synchronized(this) {
this.views.add(view);
}
}
}
super.process(msg);
}
}
public static class MembershipViewReplyMessage extends ReplyMessage {
private PersistentMembershipView view;
@Override
public int getDSFID() {
return PERSISTENT_MEMBERSHIP_VIEW_REPLY;
}
@Override
public void fromData(DataInput in) throws IOException,
ClassNotFoundException {
super.fromData(in);
boolean hasView = in.readBoolean();
if(hasView) {
view = new PersistentMembershipView();
InternalDataSerializer.invokeFromData(view, in);
}
}
@Override
public void toData(DataOutput out) throws IOException {
super.toData(out);
if(view == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
InternalDataSerializer.invokeToData(view, out);
}
}
}
}