| /** |
| * 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.Config; |
| import backtype.storm.topology.OutputFieldsDeclarer; |
| import java.util.Map; |
| import backtype.storm.spout.SpoutOutputCollector; |
| import backtype.storm.task.TopologyContext; |
| import backtype.storm.topology.base.BaseRichSpout; |
| import backtype.storm.tuple.Fields; |
| import backtype.storm.tuple.Values; |
| import backtype.storm.utils.Utils; |
| import java.util.HashMap; |
| import java.util.Random; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| public class TestWordSpout extends BaseRichSpout { |
| public static Logger LOG = LoggerFactory.getLogger(TestWordSpout.class); |
| boolean _isDistributed; |
| SpoutOutputCollector _collector; |
| |
| public TestWordSpout() { |
| this(true); |
| } |
| |
| public TestWordSpout(boolean isDistributed) { |
| _isDistributed = isDistributed; |
| } |
| |
| public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) { |
| _collector = collector; |
| } |
| |
| public void close() { |
| |
| } |
| |
| public void nextTuple() { |
| Utils.sleep(100); |
| final String[] words = new String[] {"nathan", "mike", "jackson", "golda", "bertels"}; |
| final Random rand = new Random(); |
| final String word = words[rand.nextInt(words.length)]; |
| _collector.emit(new Values(word)); |
| } |
| |
| public void ack(Object msgId) { |
| |
| } |
| |
| public void fail(Object msgId) { |
| |
| } |
| |
| public void declareOutputFields(OutputFieldsDeclarer declarer) { |
| declarer.declare(new Fields("word")); |
| } |
| |
| @Override |
| public Map<String, Object> getComponentConfiguration() { |
| if(!_isDistributed) { |
| Map<String, Object> ret = new HashMap<String, Object>(); |
| ret.put(Config.TOPOLOGY_MAX_TASK_PARALLELISM, 1); |
| return ret; |
| } else { |
| return null; |
| } |
| } |
| } |