| /* |
| * 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.kafka.source; |
| |
| import java.util.concurrent.TimeUnit; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.geode.cache.query.CqEvent; |
| import org.apache.geode.cache.query.CqStatusListener; |
| |
| class GeodeKafkaSourceListener implements CqStatusListener { |
| |
| private static final Logger logger = LoggerFactory.getLogger(GeodeKafkaSourceListener.class); |
| |
| public final String regionName; |
| private final EventBufferSupplier eventBufferSupplier; |
| private boolean initialResultsLoaded; |
| |
| public GeodeKafkaSourceListener(EventBufferSupplier eventBufferSupplier, String regionName) { |
| this.regionName = regionName; |
| this.eventBufferSupplier = eventBufferSupplier; |
| initialResultsLoaded = false; |
| } |
| |
| @Override |
| public void onEvent(CqEvent aCqEvent) { |
| while (!initialResultsLoaded) { |
| Thread.yield(); |
| } |
| try { |
| eventBufferSupplier.get().offer(new GeodeEvent(regionName, aCqEvent), 2, TimeUnit.SECONDS); |
| } catch (InterruptedException e) { |
| |
| while (true) { |
| try { |
| if (!eventBufferSupplier.get().offer(new GeodeEvent(regionName, aCqEvent), 2, |
| TimeUnit.SECONDS)) |
| break; |
| } catch (InterruptedException ex) { |
| logger.info("Thread interrupted while updating buffer", ex); |
| } |
| logger.info("GeodeKafkaSource Queue is full"); |
| } |
| } |
| } |
| |
| @Override |
| public void onError(CqEvent aCqEvent) { |
| |
| } |
| |
| @Override |
| public void onCqDisconnected() { |
| // we should probably redistribute or reconnect |
| logger.info("cq has been disconnected"); |
| } |
| |
| @Override |
| public void onCqConnected() { |
| |
| } |
| |
| public void signalInitialResultsLoaded() { |
| initialResultsLoaded = true; |
| } |
| } |