| /* |
| * 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.tier.sockets.command; |
| |
| import java.io.IOException; |
| |
| import org.apache.geode.annotations.Immutable; |
| import org.apache.geode.cache.TransactionDataNodeHasDepartedException; |
| import org.apache.geode.distributed.internal.ClusterDistributionManager; |
| import org.apache.geode.distributed.internal.ReplyException; |
| import org.apache.geode.distributed.internal.WaitForViewInstallation; |
| import org.apache.geode.distributed.internal.membership.InternalDistributedMember; |
| import org.apache.geode.internal.Assert; |
| import org.apache.geode.internal.cache.FindRemoteTXMessage; |
| import org.apache.geode.internal.cache.FindRemoteTXMessage.FindRemoteTXMessageReplyProcessor; |
| import org.apache.geode.internal.cache.InternalCache; |
| import org.apache.geode.internal.cache.PeerTXStateStub; |
| import org.apache.geode.internal.cache.TXId; |
| import org.apache.geode.internal.cache.TXManagerImpl; |
| import org.apache.geode.internal.cache.TXStateProxy; |
| import org.apache.geode.internal.cache.tier.Command; |
| import org.apache.geode.internal.cache.tier.sockets.BaseCommand; |
| import org.apache.geode.internal.cache.tier.sockets.Message; |
| import org.apache.geode.internal.cache.tier.sockets.ServerConnection; |
| import org.apache.geode.internal.security.SecurityService; |
| |
| /** |
| * Used for bootstrapping txState/PeerTXStateStub on the server. This command is send when in client |
| * in a transaction is about to failover to this server |
| */ |
| public class TXFailoverCommand extends BaseCommand { |
| |
| @Immutable |
| private static final Command singleton = new TXFailoverCommand(); |
| |
| public static Command getCommand() { |
| return singleton; |
| } |
| |
| TXFailoverCommand() { |
| // nothing |
| } |
| |
| @Override |
| public void cmdExecute(final Message clientMessage, final ServerConnection serverConnection, |
| final SecurityService securityService, long start) |
| throws IOException, ClassNotFoundException, InterruptedException { |
| |
| serverConnection.setAsTrue(REQUIRES_RESPONSE); |
| // Build the TXId for the transaction |
| InternalDistributedMember client = |
| (InternalDistributedMember) serverConnection.getProxyID().getDistributedMember(); |
| int uniqId = clientMessage.getTransactionId(); |
| if (logger.isDebugEnabled()) { |
| logger.debug("TX: Transaction {} from {} is failing over to this server", uniqId, client); |
| } |
| TXId txId = createTXId(client, uniqId); |
| TXManagerImpl mgr = (TXManagerImpl) serverConnection.getCache().getCacheTransactionManager(); |
| mgr.waitForCompletingTransaction(txId); // in case it's already completing here in another |
| // thread |
| if (mgr.isHostedTxRecentlyCompleted(txId)) { |
| writeReply(clientMessage, serverConnection); |
| serverConnection.setAsTrue(RESPONDED); |
| mgr.removeHostedTXState(txId); |
| return; |
| } |
| |
| boolean wasInProgress = mgr.setInProgress(true); // fixes bug 43350 |
| TXStateProxy tx = mgr.getTXState(); |
| Assert.assertTrue(tx != null); |
| |
| if (!tx.isRealDealLocal()) { |
| // send message to all peers to find out who hosts the transaction |
| FindRemoteTXMessageReplyProcessor processor = |
| sendFindRemoteTXMessage(serverConnection.getCache(), txId); |
| try { |
| processor.waitForRepliesUninterruptibly(); |
| } catch (ReplyException e) { |
| e.handleCause(); |
| } |
| // if hosting member is not null, bootstrap PeerTXStateStub to that member |
| // if hosting member is null, rebuild TXCommitMessage from partial TXCommitMessages |
| InternalDistributedMember hostingMember = processor.getHostingMember(); |
| if (hostingMember != null) { |
| if (logger.isDebugEnabled()) { |
| logger.debug( |
| "TX: txState is not local, bootstrapping PeerTXState stub for targetNode: {}", |
| hostingMember); |
| } |
| // GEODE-3310 set the target node in the tx |
| if (tx.getTarget() == null) { |
| tx.setTarget(hostingMember); |
| } |
| // inject the real deal |
| tx.setLocalTXState(new PeerTXStateStub(tx, hostingMember, client)); |
| } else { |
| // bug #42228 and bug #43504 - this cannot return until the current view |
| // has been installed by all members, so that dlocks are released and |
| // the same keys can be used in a new transaction by the same client thread |
| InternalCache cache = serverConnection.getCache(); |
| try { |
| WaitForViewInstallation.send((ClusterDistributionManager) cache.getDistributionManager()); |
| } catch (InterruptedException e) { |
| cache.getDistributionManager().getCancelCriterion().checkCancelInProgress(e); |
| Thread.currentThread().interrupt(); |
| } |
| // tx host has departed, rebuild the tx |
| if (processor.getTxCommitMessage() != null) { |
| if (logger.isDebugEnabled()) { |
| logger.debug("TX: for txId: {} rebuilt a recently completed tx", txId); |
| } |
| mgr.saveTXCommitMessageForClientFailover(txId, processor.getTxCommitMessage()); |
| } else { |
| writeException(clientMessage, new TransactionDataNodeHasDepartedException( |
| "Could not find transaction host for " + txId), false, serverConnection); |
| serverConnection.setAsTrue(RESPONDED); |
| mgr.removeHostedTXState(txId); |
| return; |
| } |
| } |
| } |
| if (!wasInProgress) { |
| mgr.setInProgress(false); |
| } |
| writeReply(clientMessage, serverConnection); |
| serverConnection.setAsTrue(RESPONDED); |
| } |
| |
| FindRemoteTXMessageReplyProcessor sendFindRemoteTXMessage(InternalCache cache, TXId txId) { |
| return FindRemoteTXMessage.send(cache, txId); |
| } |
| |
| TXId createTXId(InternalDistributedMember client, int uniqId) { |
| return new TXId(client, uniqId); |
| } |
| |
| } |