| // Copyright 2016 Twitter. All rights reserved. |
| // |
| // Licensed 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 com.twitter.heron.api.bolt; |
| |
| import java.util.Map; |
| import java.util.logging.Logger; |
| |
| import com.twitter.heron.api.exception.FailedException; |
| import com.twitter.heron.api.exception.ReportedFailedException; |
| import com.twitter.heron.api.topology.IUpdatable; |
| import com.twitter.heron.api.topology.OutputFieldsDeclarer; |
| import com.twitter.heron.api.topology.TopologyContext; |
| import com.twitter.heron.api.tuple.Tuple; |
| |
| public class BasicBoltExecutor implements IRichBolt, IUpdatable { |
| private static final Logger LOG = Logger.getLogger(BasicBoltExecutor.class.getName()); |
| |
| private static final long serialVersionUID = 7021447981762957626L; |
| |
| private IBasicBolt bolt; |
| private transient BasicOutputCollector collector; |
| |
| public BasicBoltExecutor(IBasicBolt aBolt) { |
| bolt = aBolt; |
| } |
| |
| @Override |
| public void declareOutputFields(OutputFieldsDeclarer declarer) { |
| bolt.declareOutputFields(declarer); |
| } |
| |
| |
| @Override |
| public void prepare( |
| Map<String, Object> heronConf, |
| TopologyContext context, |
| OutputCollector aCollector) { |
| bolt.prepare(heronConf, context); |
| collector = new BasicOutputCollector(aCollector); |
| } |
| |
| @Override |
| public void execute(Tuple input) { |
| collector.setContext(input); |
| try { |
| bolt.execute(input, collector); |
| collector.getOutputter().ack(input); |
| } catch (FailedException e) { |
| if (e instanceof ReportedFailedException) { |
| collector.reportError(e); |
| } |
| collector.getOutputter().fail(input); |
| } |
| } |
| |
| @Override |
| public void cleanup() { |
| bolt.cleanup(); |
| } |
| |
| @Override |
| public Map<String, Object> getComponentConfiguration() { |
| return bolt.getComponentConfiguration(); |
| } |
| |
| @Override |
| public void update(com.twitter.heron.api.topology.TopologyContext topologyContext) { |
| if (bolt instanceof IUpdatable) { |
| ((IUpdatable) bolt).update(topologyContext); |
| } else { |
| LOG.warning(String.format("Update() event received but can not call update() on delegate " |
| + "because it does not implement %s: %s", IUpdatable.class.getName(), bolt)); |
| } |
| } |
| } |