| /* |
| * 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.cache.client.internal; |
| |
| import java.util.concurrent.RejectedExecutionException; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import org.apache.logging.log4j.Logger; |
| |
| import org.apache.geode.CancelException; |
| import org.apache.geode.cache.client.internal.PoolImpl.PoolTask; |
| import org.apache.geode.internal.InternalDataSerializer; |
| import org.apache.geode.internal.InternalDataSerializer.SerializerAttributesHolder; |
| import org.apache.geode.internal.cache.EventID; |
| import org.apache.geode.logging.internal.log4j.api.LogService; |
| |
| public class DataSerializerRecoveryListener extends EndpointManager.EndpointListenerAdapter { |
| private static final Logger logger = LogService.getLogger(); |
| |
| private final AtomicInteger endpointCount = new AtomicInteger(); |
| protected final InternalPool pool; |
| protected final ScheduledExecutorService background; |
| protected final long pingInterval; |
| private final Object recoveryScheduledLock = new Object(); |
| private boolean recoveryScheduled; |
| |
| public DataSerializerRecoveryListener(ScheduledExecutorService background, InternalPool pool) { |
| this.background = background; |
| this.pool = pool; |
| pingInterval = pool.getPingInterval(); |
| } |
| |
| @Override |
| public void endpointCrashed(Endpoint endpoint) { |
| int count = endpointCount.decrementAndGet(); |
| if (logger.isDebugEnabled()) { |
| logger.debug("DataSerializerRecoveryTask - EndpointCrashed. Now have {} endpoints", count); |
| } |
| } |
| |
| @Override |
| public void endpointNoLongerInUse(Endpoint endpoint) { |
| int count = endpointCount.decrementAndGet(); |
| if (logger.isDebugEnabled()) { |
| logger.debug("DataSerializerRecoveryTask - EndpointNoLongerInUse. Now have {} endpoints", |
| count); |
| } |
| } |
| |
| @Override |
| public void endpointNowInUse(Endpoint endpoint) { |
| int count = endpointCount.incrementAndGet(); |
| if (logger.isDebugEnabled()) { |
| logger.debug("DataSerializerRecoveryTask - EndpointNowInUse. Now have {} endpoints", count); |
| } |
| if (count == 1) { |
| synchronized (recoveryScheduledLock) { |
| if (!recoveryScheduled) { |
| try { |
| recoveryScheduled = true; |
| background.execute(new RecoveryTask()); |
| logger.debug("DataSerializerRecoveryTask - Scheduled Recovery Task"); |
| } catch (RejectedExecutionException e) { |
| // ignore, the timer has been cancelled, which means we're shutting down. |
| } |
| } |
| } |
| } |
| } |
| |
| protected class RecoveryTask extends PoolTask { |
| |
| @Override |
| public void run2() { |
| if (pool.getCancelCriterion().isCancelInProgress()) { |
| return; |
| } |
| |
| synchronized (recoveryScheduledLock) { |
| recoveryScheduled = false; |
| } |
| |
| logger.debug("DataSerializerRecoveryTask - Attempting to recover dataSerializers"); |
| SerializerAttributesHolder[] holders = InternalDataSerializer.getSerializersForDistribution(); |
| if (holders.length == 0) { |
| return; |
| } |
| |
| EventID eventId = InternalDataSerializer.generateEventId(); |
| // Fix for bug:40930 |
| if (eventId == null) { |
| try { |
| background.schedule(new RecoveryTask(), pingInterval, TimeUnit.MILLISECONDS); |
| recoveryScheduled = true; |
| } catch (RejectedExecutionException e) { |
| if (!pool.getCancelCriterion().isCancelInProgress()) { |
| throw e; |
| } |
| } |
| } else { |
| try { |
| RegisterDataSerializersOp.execute(pool, holders, eventId); |
| } catch (CancelException ignored) { |
| } catch (RejectedExecutionException e) { |
| // This is probably because we've started to shut down. |
| if (!pool.getCancelCriterion().isCancelInProgress()) { |
| throw e; // weird |
| } |
| } catch (Exception e) { |
| if (pool.getCancelCriterion().isCancelInProgress()) { |
| return; |
| } |
| |
| // If ClassNotFoundException occurred on server, don't retry |
| Throwable cause = e.getCause(); |
| boolean cnfException = false; |
| if (cause instanceof ClassNotFoundException) { |
| logger.warn("DataSerializerRecoveryTask - Error ClassNotFoundException: {}", |
| cause.getMessage()); |
| cnfException = true; |
| } |
| |
| if (!recoveryScheduled && !cnfException) { |
| logger.warn("DataSerializerRecoveryTask - Error recovering dataSerializers: ", |
| e); |
| try { |
| background.schedule(new RecoveryTask(), pingInterval, TimeUnit.MILLISECONDS); |
| recoveryScheduled = true; |
| } catch (RejectedExecutionException ex) { // GEODE-1613 - suspect string while shutting |
| // down |
| if (!background.isTerminated() && !pool.getCancelCriterion().isCancelInProgress()) { |
| throw ex; |
| } |
| } |
| |
| } |
| } |
| } |
| } |
| } |
| } |