| /** |
| * 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 backtype.storm.testing; |
| |
| import backtype.storm.topology.OutputFieldsDeclarer; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import backtype.storm.spout.SpoutOutputCollector; |
| import backtype.storm.task.OutputCollector; |
| import backtype.storm.task.TopologyContext; |
| import backtype.storm.topology.base.BaseRichBolt; |
| import backtype.storm.topology.base.BaseRichSpout; |
| import backtype.storm.tuple.Fields; |
| import backtype.storm.tuple.Tuple; |
| import backtype.storm.tuple.Values; |
| |
| public class TestEventOrderCheckBolt extends BaseRichBolt { |
| public static Logger LOG = LoggerFactory.getLogger(TestEventOrderCheckBolt.class); |
| |
| private int _count; |
| OutputCollector _collector; |
| Map<Integer, Long> recentEventId = new HashMap<Integer, Long>(); |
| |
| public void prepare(Map stormConf, TopologyContext context, OutputCollector collector) { |
| _collector = collector; |
| _count = 0; |
| } |
| |
| public void execute(Tuple input) { |
| Integer sourceId = input.getInteger(0); |
| Long eventId = input.getLong(1); |
| Long recentEvent = recentEventId.get(sourceId); |
| |
| if (null != recentEvent && eventId <= recentEvent) { |
| String error = |
| "Error: event id is not in strict order! event source Id: " + sourceId + ", last event Id: " + recentEvent + ", current event Id: " |
| + eventId; |
| |
| _collector.emit(input, new Values(error)); |
| } |
| recentEventId.put(sourceId, eventId); |
| |
| _collector.ack(input); |
| } |
| |
| public void cleanup() { |
| |
| } |
| |
| public Fields getOutputFields() { |
| return new Fields("error"); |
| } |
| |
| public void declareOutputFields(OutputFieldsDeclarer declarer) { |
| declarer.declare(new Fields("error")); |
| } |
| } |