| /* |
| * 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.distributed.internal.membership.InternalDistributedMember; |
| 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; |
| |
| /** |
| * Command for performing Rollback on the server |
| */ |
| public class RollbackCommand extends BaseCommand { |
| |
| @Immutable |
| private static final RollbackCommand singleton = new RollbackCommand(); |
| |
| public static Command getCommand() { |
| return singleton; |
| } |
| |
| private RollbackCommand() {} |
| |
| @Override |
| public void cmdExecute(final Message clientMessage, final ServerConnection serverConnection, |
| final SecurityService securityService, long start) |
| throws IOException, ClassNotFoundException, InterruptedException { |
| serverConnection.setAsTrue(REQUIRES_RESPONSE); |
| TXManagerImpl txMgr = (TXManagerImpl) serverConnection.getCache().getCacheTransactionManager(); |
| InternalDistributedMember client = |
| (InternalDistributedMember) serverConnection.getProxyID().getDistributedMember(); |
| int uniqId = clientMessage.getTransactionId(); |
| TXId txId = new TXId(client, uniqId); |
| if (txMgr.isHostedTxRecentlyCompleted(txId)) { |
| if (logger.isDebugEnabled()) { |
| logger.debug("TX: found a recently rolled back tx: {}", txId); |
| sendRollbackReply(clientMessage, serverConnection); |
| txMgr.removeHostedTXState(txId); |
| return; |
| } |
| } |
| final TXStateProxy txState = txMgr.getTXState(); |
| try { |
| if (txState != null) { |
| txId = txState.getTxId(); |
| txMgr.rollback(); |
| sendRollbackReply(clientMessage, serverConnection); |
| } else { |
| // could not find TxState in the host server. |
| // Protect against a failover command received so late, |
| // and it is removed from the failoverMap due to capacity. |
| sendRollbackReply(clientMessage, serverConnection); |
| } |
| } catch (Exception e) { |
| writeException(clientMessage, e, false, serverConnection); |
| serverConnection.setAsTrue(RESPONDED); |
| } finally { |
| if (logger.isDebugEnabled()) { |
| logger.debug("TX: removing tx state for {}", txId); |
| } |
| if (txId != null) { |
| TXStateProxy proxy = txMgr.removeHostedTXState(txId); |
| if (logger.isDebugEnabled()) { |
| logger.debug("TX: removed tx state proxy {}", proxy); |
| } |
| } |
| } |
| } |
| |
| private void sendRollbackReply(Message msg, ServerConnection servConn) throws IOException { |
| writeReply(msg, servConn); |
| servConn.setAsTrue(RESPONDED); |
| } |
| |
| } |