| /** |
| * 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.topology; |
| |
| import java.util.Map; |
| import java.util.logging.Logger; |
| |
| import org.apache.heron.api.topology.IUpdatable; |
| |
| import backtype.storm.task.OutputCollectorImpl; |
| import backtype.storm.task.TopologyContext; |
| import backtype.storm.tuple.TupleImpl; |
| import backtype.storm.utils.ConfigUtils; |
| |
| /** |
| * When writing topologies using Java, {@link IRichBolt} and {@link IRichSpout} are the main interfaces |
| * to use to implement components of the topology. |
| */ |
| public class IRichBoltDelegate implements org.apache.heron.api.bolt.IRichBolt, IUpdatable { |
| private static final Logger LOG = Logger.getLogger(IRichBoltDelegate.class.getName()); |
| |
| private static final long serialVersionUID = -3717575342431064148L; |
| private IRichBolt delegate; |
| private TopologyContext topologyContextImpl; |
| private OutputCollectorImpl outputCollectorImpl; |
| |
| public IRichBoltDelegate(IRichBolt delegate) { |
| this.delegate = delegate; |
| } |
| |
| @Override |
| @SuppressWarnings("rawtypes") |
| public void prepare( |
| Map conf, |
| org.apache.heron.api.topology.TopologyContext context, |
| org.apache.heron.api.bolt.OutputCollector collector) { |
| topologyContextImpl = new TopologyContext(context); |
| outputCollectorImpl = new OutputCollectorImpl(collector); |
| delegate.prepare(conf, topologyContextImpl, outputCollectorImpl); |
| } |
| |
| @Override |
| public void cleanup() { |
| delegate.cleanup(); |
| } |
| |
| @Override |
| public void execute(org.apache.heron.api.tuple.Tuple tuple) { |
| TupleImpl impl = new TupleImpl(tuple); |
| delegate.execute(impl); |
| } |
| |
| @Override |
| public void declareOutputFields(org.apache.heron.api.topology.OutputFieldsDeclarer declarer) { |
| OutputFieldsGetter getter = new OutputFieldsGetter(declarer); |
| delegate.declareOutputFields(getter); |
| } |
| |
| @Override |
| public Map<String, Object> getComponentConfiguration() { |
| Map<String, Object> config = delegate.getComponentConfiguration(); |
| return ConfigUtils.translateComponentConfig(config); |
| } |
| |
| @Override |
| public void update(org.apache.heron.api.topology.TopologyContext topologyContext) { |
| if (delegate instanceof IUpdatable) { |
| ((IUpdatable) delegate).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(), delegate)); |
| } |
| } |
| } |