| /* |
| * 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.locks; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.util.Set; |
| |
| import org.apache.geode.DataSerializer; |
| import org.apache.geode.distributed.internal.ClusterDistributionManager; |
| import org.apache.geode.distributed.internal.MessageWithReply; |
| import org.apache.geode.distributed.internal.PooledDistributionMessage; |
| import org.apache.geode.distributed.internal.ReplyMessage; |
| import org.apache.geode.distributed.internal.locks.DLockGrantor; |
| import org.apache.geode.distributed.internal.locks.DLockService; |
| import org.apache.geode.distributed.internal.locks.LockGrantorDestroyedException; |
| import org.apache.geode.internal.InternalDataSerializer; |
| |
| /** |
| * A message to update the Grantor with the latest TXLock participants This class was added as part |
| * of the solution to bug 32999. It is used to update the Grantor that holds the lock batch for a |
| * given TXLockId. This update is needed in the event that a recovery is needed when the TXLock |
| * Lessor (the origin VM of the transaction) crashes/departs before or while sending the |
| * TXCommitMessage but after making the reservation for the transaction. |
| * |
| * @see org.apache.geode.internal.cache.TXCommitMessage#send(TXLockId) |
| * @see org.apache.geode.internal.cache.TXCommitMessage#updateLockMembers |
| * @see org.apache.geode.distributed.internal.locks.DLockGrantor#getLockBatch(Object) |
| * @see org.apache.geode.distributed.internal.locks.DLockGrantor#updateLockBatch(Object, |
| * org.apache.geode.distributed.internal.locks.DLockBatch) |
| * @see TXLockBatch#getBatchId |
| * @see TXLessorDepartureHandler |
| * @see TXOriginatorRecoveryProcessor |
| * @see org.apache.geode.internal.cache.TXFarSideCMTracker |
| * |
| * @since GemFire 4.1.1 |
| */ |
| public class TXLockUpdateParticipantsMessage extends PooledDistributionMessage |
| implements MessageWithReply { |
| |
| private transient TXLockId txLockId; |
| private transient String serviceName; |
| private transient Set updatedParticipants; |
| private transient int processorId; |
| |
| public TXLockUpdateParticipantsMessage(TXLockId txLockId, String serviceName, |
| Set updatedParticipants, int processorId) { |
| this.txLockId = txLockId; |
| this.serviceName = serviceName; |
| this.updatedParticipants = updatedParticipants; |
| this.processorId = processorId; |
| } |
| |
| public TXLockUpdateParticipantsMessage() { |
| this.txLockId = null; |
| this.serviceName = null; |
| this.updatedParticipants = null; |
| } |
| |
| @Override |
| public void process(ClusterDistributionManager dm) { |
| // dm.getLogger().info("DEBUG Processing " + this); |
| DLockService svc = DLockService.getInternalServiceNamed(this.serviceName); |
| if (svc != null) { |
| updateParticipants(svc, this.txLockId, this.updatedParticipants); |
| } |
| TXLockUpdateParticipantsReplyMessage reply = new TXLockUpdateParticipantsReplyMessage(); |
| reply.setProcessorId(this.processorId); |
| reply.setRecipient(getSender()); |
| dm.putOutgoing(reply); |
| } |
| |
| /** |
| * Update the Grantor with a new set of Participants. This method is meant to be used in a local |
| * context (does <b>NOT</b> involve any messaging) |
| */ |
| public static void updateParticipants(DLockService svc, TXLockId txLockId, |
| Set updatedParticipants) { |
| DLockGrantor grantor = null; |
| try { |
| grantor = DLockGrantor.waitForGrantor(svc); |
| if (grantor != null) { |
| try { |
| TXLockBatch txb = (TXLockBatch) grantor.getLockBatch(txLockId); |
| if (txb == null) { |
| // we became grantor after the original grantor left |
| // fixes bug 42656 |
| return; |
| } |
| txb.setParticipants(updatedParticipants); |
| grantor.updateLockBatch(txLockId, txb); |
| } catch (LockGrantorDestroyedException ignoreit) { |
| } |
| } |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| } |
| } |
| |
| @Override |
| public int getProcessorId() { |
| return this.processorId; |
| } |
| |
| @Override |
| public void toData(DataOutput out) throws IOException { |
| super.toData(out); |
| out.writeInt(this.processorId); |
| InternalDataSerializer.invokeToData(this.txLockId, out); |
| DataSerializer.writeString(this.serviceName, out); |
| InternalDataSerializer.writeSet(this.updatedParticipants, out); |
| } |
| |
| @Override |
| public int getDSFID() { |
| return TX_LOCK_UPDATE_PARTICIPANTS_MESSAGE; |
| } |
| |
| @Override |
| public void fromData(DataInput in) throws IOException, ClassNotFoundException { |
| super.fromData(in); |
| this.processorId = in.readInt(); |
| this.txLockId = TXLockIdImpl.createFromData(in); |
| this.serviceName = DataSerializer.readString(in); |
| this.updatedParticipants = InternalDataSerializer.readSet(in); |
| } |
| |
| @Override |
| public String toString() { |
| return "TXLockUpdateParticipantsMessage for " + "service=" + this.serviceName |
| + "; updatedParticipants=" + this.updatedParticipants + "; txLockId=" + this.txLockId; |
| } |
| |
| /** |
| * The simple reply message that the sender waits for |
| */ |
| public static class TXLockUpdateParticipantsReplyMessage extends ReplyMessage { |
| |
| @Override |
| public int getDSFID() { |
| return TX_LOCK_UPDATE_PARTICIPANTS_REPLY_MESSAGE; |
| } |
| |
| @Override |
| public void fromData(DataInput in) throws IOException, ClassNotFoundException { |
| super.fromData(in); |
| } |
| |
| @Override |
| public void toData(DataOutput out) throws IOException { |
| super.toData(out); |
| } |
| |
| @Override |
| public String toString() { |
| return "TXLockUpdateParticipantsReplyMessage processorId=" + super.processorId + "; sender=" |
| + this.getSender(); |
| } |
| } |
| |
| } |