/*
* 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.persistence;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import org.apache.logging.log4j.Logger;
import org.apache.geode.CancelException;
import org.apache.geode.DataSerializer;
import org.apache.geode.SystemFailure;
import org.apache.geode.cache.Cache;
import org.apache.geode.cache.CacheFactory;
import org.apache.geode.cache.Region;
import org.apache.geode.cache.RegionDestroyedException;
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.HighPriorityDistributionMessage;
import org.apache.geode.distributed.internal.MessageWithReply;
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.cache.DistributedRegion;
import org.apache.geode.internal.cache.GemFireCacheImpl;
import org.apache.geode.internal.cache.LocalRegion;
import org.apache.geode.internal.cache.PartitionedRegionHelper;
import org.apache.geode.internal.cache.partitioned.Bucket;
import org.apache.geode.internal.logging.LogService;
/**
*
*/
public class PersistentStateQueryMessage extends HighPriorityDistributionMessage
implements MessageWithReply {
private static final Logger logger = LogService.getLogger();
private String regionPath;
private PersistentMemberID id;
private int processorId;
private PersistentMemberID initializingId;
public PersistentStateQueryMessage() {
}
public PersistentStateQueryMessage(String regionPath, PersistentMemberID id,
PersistentMemberID initializingId, int processorId) {
this.regionPath = regionPath;
this.id = id;
this.initializingId = initializingId;
this.processorId = processorId;
}
public static PersistentStateQueryResults send(Set<InternalDistributedMember> members, DM dm,
String regionPath, PersistentMemberID persistentId, PersistentMemberID initializingId)
throws ReplyException {
PersistentStateQueryReplyProcessor processor =
new PersistentStateQueryReplyProcessor(dm, members);
PersistentStateQueryMessage msg = new PersistentStateQueryMessage(regionPath, persistentId,
initializingId, processor.getProcessorId());
msg.setRecipients(members);
dm.putOutgoing(msg);
processor.waitForRepliesUninterruptibly();
return processor.results;
}
@Override
protected void process(DistributionManager dm) {
int oldLevel = // Set thread local flag to allow entrance through initialization Latch
LocalRegion.setThreadInitLevelRequirement(LocalRegion.ANY_INIT);
PersistentMemberState state = null;
PersistentMemberID myId = null;
PersistentMemberID myInitializingId = null;
DiskStoreID diskStoreId = null;
HashSet<PersistentMemberID> onlineMembers = null;
ReplyException exception = null;
boolean successfulReply = false;
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) {
if (id != null) {
state = persistenceAdvisor.getPersistedStateOfMember(id);
}
if (initializingId != null && state == null) {
state = persistenceAdvisor.getPersistedStateOfMember(initializingId);
}
myId = persistenceAdvisor.getPersistentID();
myInitializingId = persistenceAdvisor.getInitializingID();
onlineMembers = persistenceAdvisor.getPersistedOnlineOrEqualMembers();
diskStoreId = persistenceAdvisor.getDiskStoreID();
successfulReply = true;
}
} catch (RegionDestroyedException e) {
logger.debug("<RegionDestroyed> {}", this);
} catch (CancelException e) {
logger.debug("<CancelException> {}", this);
} catch (VirtualMachineError e) {
SystemFailure.initiateFailure(e);
throw e;
} catch (Throwable t) {
SystemFailure.checkFailure();
exception = new ReplyException(t);
} finally {
LocalRegion.setThreadInitLevelRequirement(oldLevel);
ReplyMessage replyMsg;
if (successfulReply) {
PersistentStateQueryReplyMessage persistentReplyMessage =
new PersistentStateQueryReplyMessage();
persistentReplyMessage.myId = myId;
persistentReplyMessage.persistedStateOfPeer = state;
persistentReplyMessage.myInitializingId = myInitializingId;
persistentReplyMessage.diskStoreId = diskStoreId;
persistentReplyMessage.onlineMembers = onlineMembers;
replyMsg = persistentReplyMessage;
} else {
replyMsg = new ReplyMessage();
}
replyMsg.setProcessorId(processorId);
replyMsg.setRecipient(getSender());
if (exception != null) {
replyMsg.setException(exception);
}
if (logger.isDebugEnabled()) {
logger.debug("Received {},replying with {}", this, replyMsg);
}
dm.putOutgoing(replyMsg);
}
}
public int getDSFID() {
return PERSISTENT_STATE_QUERY_REQUEST;
}
@Override
public void fromData(DataInput in) throws IOException, ClassNotFoundException {
super.fromData(in);
regionPath = DataSerializer.readString(in);
processorId = in.readInt();
boolean hasId = in.readBoolean();
if (hasId) {
id = new PersistentMemberID();
id.fromData(in);
}
boolean hasInitializingId = in.readBoolean();
if (hasInitializingId) {
initializingId = new PersistentMemberID();
initializingId.fromData(in);
}
}
@Override
public void toData(DataOutput out) throws IOException {
super.toData(out);
DataSerializer.writeString(regionPath, out);
out.writeInt(processorId);
out.writeBoolean(id != null);
if (id != null) {
id.toData(out);
}
out.writeBoolean(initializingId != null);
if (initializingId != null) {
initializingId.toData(out);
}
}
@Override
public String toString() {
return super.toString() + ",id=" + id + ",regionPath=" + regionPath + ",initializingId="
+ initializingId;
}
private static class PersistentStateQueryReplyProcessor extends ReplyProcessor21 {
PersistentStateQueryResults results = new PersistentStateQueryResults();
public PersistentStateQueryReplyProcessor(DM dm, Collection initMembers) {
super(dm, initMembers);
}
@Override
public void process(DistributionMessage msg) {
if (msg instanceof PersistentStateQueryReplyMessage) {
PersistentStateQueryReplyMessage reply = (PersistentStateQueryReplyMessage) msg;
results.addResult(reply.persistedStateOfPeer, reply.getSender(), reply.myId,
reply.myInitializingId, reply.diskStoreId, reply.onlineMembers);
}
super.process(msg);
}
}
public static class PersistentStateQueryReplyMessage extends ReplyMessage {
public HashSet<PersistentMemberID> onlineMembers;
public DiskStoreID diskStoreId;
private PersistentMemberState persistedStateOfPeer;
private PersistentMemberID myId;
private PersistentMemberID myInitializingId;
@Override
public int getDSFID() {
return PERSISTENT_STATE_QUERY_REPLY;
}
@Override
public void fromData(DataInput in) throws IOException, ClassNotFoundException {
super.fromData(in);
boolean hasId = in.readBoolean();
if (hasId) {
myId = new PersistentMemberID();
myId.fromData(in);
}
boolean hasState = in.readBoolean();
if (hasState) {
persistedStateOfPeer = PersistentMemberState.fromData(in);
}
boolean hasInitializingId = in.readBoolean();
if (hasInitializingId) {
myInitializingId = new PersistentMemberID();
myInitializingId.fromData(in);
}
boolean hasDiskStoreID = in.readBoolean();
if (hasDiskStoreID) {
diskStoreId = new DiskStoreID(in.readLong(), in.readLong());
}
boolean hasOnlineMembers = in.readBoolean();
if (hasOnlineMembers) {
onlineMembers = DataSerializer.readHashSet(in);
}
}
@Override
public void toData(DataOutput out) throws IOException {
super.toData(out);
if (myId == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
myId.toData(out);
}
if (persistedStateOfPeer == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
persistedStateOfPeer.toData(out);
}
if (myInitializingId == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
myInitializingId.toData(out);
}
if (diskStoreId == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
out.writeLong(diskStoreId.getMostSignificantBits());
out.writeLong(diskStoreId.getLeastSignificantBits());
}
if (onlineMembers == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
DataSerializer.writeHashSet(onlineMembers, out);
}
}
@Override
public String toString() {
return super.toString() + ",myId=" + myId + ",myInitializingId=" + myInitializingId
+ ",persistedStateOfPeer=" + persistedStateOfPeer;
}
}
}