| /* |
| * 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.connectors.jdbc; |
| |
| import java.sql.SQLException; |
| import java.util.List; |
| import java.util.concurrent.atomic.LongAdder; |
| |
| import org.apache.logging.log4j.Logger; |
| |
| import org.apache.geode.CopyHelper; |
| import org.apache.geode.annotations.Experimental; |
| import org.apache.geode.cache.asyncqueue.AsyncEvent; |
| import org.apache.geode.cache.asyncqueue.AsyncEventListener; |
| import org.apache.geode.connectors.jdbc.internal.AbstractJdbcCallback; |
| import org.apache.geode.connectors.jdbc.internal.SqlHandler; |
| import org.apache.geode.internal.cache.InternalCache; |
| import org.apache.geode.internal.logging.LogService; |
| import org.apache.geode.pdx.PdxInstance; |
| |
| /** |
| * This class provides write behind cache semantics for a JDBC data source using AsyncEventListener. |
| * |
| * @since Geode 1.4 |
| */ |
| @Experimental |
| public class JdbcAsyncWriter extends AbstractJdbcCallback implements AsyncEventListener { |
| private static final Logger logger = LogService.getLogger(); |
| |
| private final LongAdder totalEvents = new LongAdder(); |
| private final LongAdder successfulEvents = new LongAdder(); |
| private final LongAdder failedEvents = new LongAdder(); |
| private final LongAdder ignoredEvents = new LongAdder(); |
| |
| @SuppressWarnings("unused") |
| public JdbcAsyncWriter() { |
| super(); |
| } |
| |
| // Constructor for test purposes only |
| JdbcAsyncWriter(SqlHandler sqlHandler, InternalCache cache) { |
| super(sqlHandler, cache); |
| } |
| |
| @Override |
| public boolean processEvents(List<AsyncEvent> events) { |
| changeTotalEvents(events.size()); |
| |
| if (!events.isEmpty()) { |
| try { |
| checkInitialized(events.get(0).getRegion()); |
| } catch (RuntimeException ex) { |
| changeFailedEvents(events.size()); |
| logger.error("Exception initializing JdbcAsyncWriter", ex); |
| return true; |
| } |
| } |
| |
| Boolean initialPdxReadSerialized = cache.getPdxReadSerializedOverride(); |
| cache.setPdxReadSerializedOverride(true); |
| try { |
| for (AsyncEvent event : events) { |
| if (eventCanBeIgnored(event.getOperation())) { |
| changeIgnoredEvents(1); |
| continue; |
| } |
| try { |
| getSqlHandler().write(event.getRegion(), event.getOperation(), event.getKey(), |
| getPdxInstance(event)); |
| changeSuccessfulEvents(1); |
| } catch (SQLException | RuntimeException ex) { |
| changeFailedEvents(1); |
| logger.error("Exception processing event {}", event, ex); |
| } |
| } |
| } finally { |
| cache.setPdxReadSerializedOverride(initialPdxReadSerialized); |
| } |
| return true; |
| } |
| |
| long getTotalEvents() { |
| return totalEvents.longValue(); |
| } |
| |
| long getSuccessfulEvents() { |
| return successfulEvents.longValue(); |
| } |
| |
| long getFailedEvents() { |
| return failedEvents.longValue(); |
| } |
| |
| long getIgnoredEvents() { |
| return ignoredEvents.longValue(); |
| } |
| |
| private void changeSuccessfulEvents(long delta) { |
| successfulEvents.add(delta); |
| } |
| |
| private void changeFailedEvents(long delta) { |
| failedEvents.add(delta); |
| } |
| |
| private void changeTotalEvents(long delta) { |
| totalEvents.add(delta); |
| } |
| |
| private void changeIgnoredEvents(long delta) { |
| ignoredEvents.add(delta); |
| } |
| |
| /** |
| * precondition: DefaultQuery.setPdxReadSerialized(true) |
| */ |
| private PdxInstance getPdxInstance(AsyncEvent event) { |
| Object value = event.getDeserializedValue(); |
| if (!(value instanceof PdxInstance)) { |
| value = CopyHelper.copy(value); |
| } |
| return (PdxInstance) value; |
| } |
| } |