| /* |
| * 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.tx; |
| |
| 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.DataSerializer; |
| import org.apache.geode.cache.CacheException; |
| import org.apache.geode.cache.EntryNotFoundException; |
| 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.InternalDistributedSystem; |
| 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.NanoTimer; |
| import org.apache.geode.internal.cache.LocalRegion; |
| import org.apache.geode.internal.cache.RegionEntry; |
| import org.apache.geode.internal.cache.RemoteOperationException; |
| import org.apache.geode.internal.cache.versions.VersionTag; |
| 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; |
| |
| /** |
| * This message is used to request a VersionTag from a remote member. |
| * |
| * DistributedRegions with DataPolicy NORMAL, PRELOADED, use this message to fetch VersionTag for a |
| * key when a tx is in progress (see TXEntryState.fetchRemoteVersionTag). |
| * |
| * @since GemFire 7.0 |
| */ |
| public class RemoteFetchVersionMessage extends RemoteOperationMessage { |
| |
| private static final Logger logger = LogService.getLogger(); |
| |
| private Object key; |
| |
| /** for deserialization */ |
| public RemoteFetchVersionMessage() {} |
| |
| /** |
| * Send RemoteFetchVersionMessage to the recipient for the given key |
| * |
| * @return the processor used to fetch the VersionTag for the key |
| * @throws RemoteOperationException if the member is no longer available |
| */ |
| public static FetchVersionResponse send(InternalDistributedMember recipient, LocalRegion r, |
| Object key) throws RemoteOperationException { |
| FetchVersionResponse response = new FetchVersionResponse(r.getSystem(), recipient); |
| RemoteFetchVersionMessage msg = |
| new RemoteFetchVersionMessage(recipient, r.getFullPath(), response, key); |
| Set<?> failures = r.getDistributionManager().putOutgoing(msg); |
| if (failures != null && failures.size() > 0) { |
| throw new RemoteOperationException( |
| String.format("Failed sending < %s >", msg)); |
| } |
| return response; |
| } |
| |
| private RemoteFetchVersionMessage(InternalDistributedMember recipient, String regionPath, |
| ReplyProcessor21 processor, Object key) { |
| super(recipient, regionPath, processor); |
| this.key = key; |
| } |
| |
| @Override |
| public int getDSFID() { |
| return R_FETCH_VERSION_MESSAGE; |
| } |
| |
| @Override |
| public void fromData(DataInput in, |
| DeserializationContext context) throws IOException, ClassNotFoundException { |
| super.fromData(in, context); |
| this.key = DataSerializer.readObject(in); |
| } |
| |
| @Override |
| public void toData(DataOutput out, |
| SerializationContext context) throws IOException { |
| super.toData(out, context); |
| DataSerializer.writeObject(this.key, out); |
| } |
| |
| @Override |
| protected boolean operateOnRegion(ClusterDistributionManager dm, LocalRegion r, long startTime) |
| throws RemoteOperationException { |
| r.waitOnInitialization(); |
| VersionTag<?> tag; |
| try { |
| RegionEntry re = r.getRegionEntry(key); |
| if (re == null) { |
| if (logger.isTraceEnabled(LogMarker.DM_VERBOSE)) { |
| logger.trace(LogMarker.DM_VERBOSE, |
| "RemoteFetchVersionMessage did not find entry for key:{}", key); |
| } |
| r.checkEntryNotFound(key); |
| } |
| tag = re.getVersionStamp().asVersionTag(); |
| if (logger.isTraceEnabled(LogMarker.DM_VERBOSE)) { |
| logger.trace("RemoteFetchVersionMessage for key:{} returning tag:{}", key, tag); |
| } |
| FetchVersionReplyMessage.send(getSender(), processorId, tag, dm); |
| |
| } catch (EntryNotFoundException e) { |
| sendReply(getSender(), getProcessorId(), dm, new ReplyException(e), r, startTime); |
| } |
| return false; |
| } |
| |
| /** |
| * This message is used to send a reply for RemoteFetchVersionMessage. |
| * |
| */ |
| public static class FetchVersionReplyMessage extends ReplyMessage { |
| private VersionTag<?> tag; |
| |
| /** for deserialization */ |
| public FetchVersionReplyMessage() {} |
| |
| private FetchVersionReplyMessage(int processorId, VersionTag<?> tag) { |
| setProcessorId(processorId); |
| this.tag = tag; |
| } |
| |
| public static void send(InternalDistributedMember recipient, int processorId, VersionTag<?> tag, |
| DistributionManager dm) { |
| FetchVersionReplyMessage reply = new FetchVersionReplyMessage(processorId, tag); |
| reply.setRecipient(recipient); |
| dm.putOutgoing(reply); |
| } |
| |
| @Override |
| public void process(DistributionManager dm, ReplyProcessor21 processor) { |
| final long startTime = getTimestamp(); |
| final boolean isDebugEnabled = logger.isTraceEnabled(LogMarker.DM_VERBOSE); |
| |
| if (isDebugEnabled) { |
| logger.trace(LogMarker.DM_VERBOSE, |
| "FetchVersionReplyMessage process invoking reply processor with processorId:{}", |
| this.processorId); |
| } |
| |
| if (processor == null) { |
| if (isDebugEnabled) { |
| logger.debug("FetchVersionReplyMessage processor not found"); |
| } |
| return; |
| } |
| processor.process(this); |
| |
| if (isDebugEnabled) { |
| logger.trace(LogMarker.DM_VERBOSE, "{} Processed {}", processor, this); |
| } |
| dm.getStats().incReplyMessageTime(NanoTimer.getTime() - startTime); |
| } |
| |
| @Override |
| public int getDSFID() { |
| return R_FETCH_VERSION_REPLY; |
| } |
| |
| @Override |
| public void toData(DataOutput out, |
| SerializationContext context) throws IOException { |
| super.toData(out, context); |
| DataSerializer.writeObject(this.tag, out); |
| } |
| |
| @Override |
| public void fromData(DataInput in, |
| DeserializationContext context) throws IOException, ClassNotFoundException { |
| super.fromData(in, context); |
| this.tag = DataSerializer.readObject(in); |
| } |
| } |
| |
| /** |
| * A processor to capture the VersionTag returned by RemoteFetchVersion message. |
| * |
| */ |
| public static class FetchVersionResponse extends RemoteOperationResponse { |
| |
| private volatile VersionTag<?> tag; |
| |
| public FetchVersionResponse(InternalDistributedSystem dm, InternalDistributedMember member) { |
| super(dm, member, true); |
| } |
| |
| @Override |
| public void process(DistributionMessage msg) { |
| try { |
| if (msg instanceof FetchVersionReplyMessage) { |
| FetchVersionReplyMessage reply = (FetchVersionReplyMessage) msg; |
| this.tag = reply.tag; |
| if (logger.isTraceEnabled(LogMarker.DM_VERBOSE)) { |
| logger.trace(LogMarker.DM_VERBOSE, "FetchVersionResponse return tag is {}", this.tag); |
| } |
| } |
| } finally { |
| super.process(msg); |
| } |
| } |
| |
| public VersionTag<?> waitForResponse() throws RemoteOperationException { |
| try { |
| waitForRemoteResponse(); |
| } catch (RemoteOperationException e) { |
| logger.debug("RemoteFetchVersionMessage threw", e); |
| throw e; |
| } catch (EntryNotFoundException e) { |
| logger.debug("RemoteFetchVersionMessage threw", e); |
| throw e; |
| } catch (CacheException e) { |
| logger.debug("RemoteFetchVersionMessage threw", e); |
| throw new RemoteOperationException("RemoteFetchVersionMessage threw exception", e); |
| } |
| return tag; |
| } |
| } |
| } |