| /** |
| * 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.storm.coordination; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import org.apache.storm.coordination.CoordinatedBolt.FinishedCallback; |
| import org.apache.storm.coordination.CoordinatedBolt.TimeoutCallback; |
| import org.apache.storm.task.OutputCollector; |
| import org.apache.storm.task.TopologyContext; |
| import org.apache.storm.topology.FailedException; |
| import org.apache.storm.topology.IRichBolt; |
| import org.apache.storm.topology.OutputFieldsDeclarer; |
| import org.apache.storm.tuple.Tuple; |
| import org.apache.storm.utils.Utils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class BatchBoltExecutor implements IRichBolt, FinishedCallback, TimeoutCallback { |
| public static final Logger LOG = LoggerFactory.getLogger(BatchBoltExecutor.class); |
| |
| private byte[] boltSer; |
| private Map<Object, IBatchBolt> openTransactions; |
| private Map conf; |
| private TopologyContext context; |
| private BatchOutputCollectorImpl collector; |
| |
| public BatchBoltExecutor(IBatchBolt bolt) { |
| boltSer = Utils.javaSerialize(bolt); |
| } |
| |
| @Override |
| public void prepare(Map<String, Object> conf, TopologyContext context, OutputCollector collector) { |
| this.conf = conf; |
| this.context = context; |
| this.collector = new BatchOutputCollectorImpl(collector); |
| openTransactions = new HashMap<>(); |
| } |
| |
| @Override |
| public void execute(Tuple input) { |
| Object id = input.getValue(0); |
| IBatchBolt bolt = getBatchBolt(id); |
| try { |
| bolt.execute(input); |
| collector.ack(input); |
| } catch (FailedException e) { |
| LOG.error("Failed to process tuple in batch", e); |
| collector.fail(input); |
| } |
| } |
| |
| @Override |
| public void cleanup() { |
| } |
| |
| @Override |
| public void finishedId(Object id) { |
| IBatchBolt bolt = getBatchBolt(id); |
| openTransactions.remove(id); |
| bolt.finishBatch(); |
| } |
| |
| @Override |
| public void timeoutId(Object attempt) { |
| openTransactions.remove(attempt); |
| } |
| |
| |
| @Override |
| public void declareOutputFields(OutputFieldsDeclarer declarer) { |
| newTransactionalBolt().declareOutputFields(declarer); |
| } |
| |
| @Override |
| public Map<String, Object> getComponentConfiguration() { |
| return newTransactionalBolt().getComponentConfiguration(); |
| } |
| |
| private IBatchBolt getBatchBolt(Object id) { |
| IBatchBolt bolt = openTransactions.get(id); |
| if (bolt == null) { |
| bolt = newTransactionalBolt(); |
| bolt.prepare(conf, context, collector, id); |
| openTransactions.put(id, bolt); |
| } |
| return bolt; |
| } |
| |
| private IBatchBolt newTransactionalBolt() { |
| return Utils.javaDeserialize(boltSer, IBatchBolt.class); |
| } |
| } |