| /* |
| * 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.util.Set; |
| import java.util.concurrent.RejectedExecutionException; |
| |
| import org.apache.logging.log4j.Logger; |
| |
| import org.apache.geode.distributed.internal.DistributionManager; |
| import org.apache.geode.distributed.internal.locks.DLockBatch; |
| import org.apache.geode.distributed.internal.locks.DLockGrantor; |
| import org.apache.geode.distributed.internal.locks.DLockLessorDepartureHandler; |
| import org.apache.geode.distributed.internal.locks.DLockService; |
| import org.apache.geode.distributed.internal.membership.InternalDistributedMember; |
| import org.apache.geode.logging.internal.log4j.api.LogService; |
| |
| /** |
| * Handles departure of lessor (lease holder) by sending a message asking each participant if it's |
| * ok to release the leases. Upon receipt of all replies the lease will be automatically released. |
| * |
| */ |
| public class TXLessorDepartureHandler implements DLockLessorDepartureHandler { |
| private static final Logger logger = LogService.getLogger(); |
| |
| private final Object stateLock = new Object(); |
| private boolean processingDepartures; |
| |
| @Override |
| public void waitForInProcessDepartures() throws InterruptedException { |
| synchronized (stateLock) { |
| while (processingDepartures) { |
| stateLock.wait(); |
| } |
| } |
| } |
| |
| @Override |
| public void handleDepartureOf(InternalDistributedMember owner, DLockGrantor grantor) { |
| // get DTLS |
| TXLockService dtls = TXLockService.getDTLS(); |
| if (dtls == null) |
| return; |
| try { |
| if (!dtls.isLockGrantor()) { |
| logger.debug("This member is not lock grantor; exiting TXLessorDepartureHandler"); |
| return; |
| } |
| |
| DLockService dlock = ((TXLockServiceImpl) dtls).getInternalDistributedLockService(); |
| |
| // DLockGrantor grantor = DLockGrantor.waitForGrantor(dlock, true); |
| if (grantor == null || grantor.isDestroyed()) { |
| logger.debug( |
| "Lock grantor does not exist or has been destroyed; exiting TXLessorDepartureHandler"); |
| return; |
| } |
| |
| // verify owner has active txLock |
| DLockBatch[] batches = grantor.getLockBatches(owner); |
| if (batches.length == 0) { |
| logger.debug("{} has no active lock batches; exiting TXLessorDepartureHandler", owner); |
| return; |
| } |
| sendRecoveryMsgs(dlock.getDistributionManager(), batches, owner, grantor); |
| } catch (IllegalStateException e) { |
| // ignore... service was destroyed |
| } // outer try-catch |
| } |
| |
| private void sendRecoveryMsgs(final DistributionManager dm, final DLockBatch[] batches, |
| final InternalDistributedMember owner, final DLockGrantor grantor) { |
| |
| synchronized (stateLock) { |
| processingDepartures = true; |
| } |
| Runnable recoverTx = () -> { |
| try { |
| for (int i = 0; i < batches.length; i++) { |
| TXLockBatch batch = (TXLockBatch) batches[i]; |
| // send TXOriginatorDepartureMessage |
| Set participants = batch.getParticipants(); |
| TXOriginatorRecoveryProcessor.sendMessage(participants, owner, batch.getTXLockId(), |
| grantor, dm); |
| } |
| } finally { |
| clearProcessingDepartures(); |
| } |
| }; |
| |
| try { |
| dm.getExecutors().getWaitingThreadPool().execute(recoverTx); |
| } catch (RejectedExecutionException e) { |
| // this shouldn't happen unless we're shutting down or someone has set a size constraint |
| // on the waiting-pool using a system property |
| if (!dm.getCancelCriterion().isCancelInProgress()) { |
| logger.warn("Unable to schedule background cleanup of transactions for departed member {}." |
| + " Performing in-line cleanup of the transactions."); |
| recoverTx.run(); |
| } |
| } |
| } |
| |
| private void clearProcessingDepartures() { |
| synchronized (stateLock) { |
| processingDepartures = false; |
| stateLock.notifyAll(); |
| } |
| } |
| |
| } |