| // Copyright 2017 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.examples.eco; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Random; |
| |
| import org.apache.storm.Config; |
| import org.apache.storm.spout.SpoutOutputCollector; |
| import org.apache.storm.task.TopologyContext; |
| import org.apache.storm.topology.OutputFieldsDeclarer; |
| import org.apache.storm.topology.base.BaseRichSpout; |
| import org.apache.storm.tuple.Fields; |
| import org.apache.storm.tuple.Values; |
| import org.apache.storm.utils.Utils; |
| |
| @SuppressWarnings({"serial", "HiddenField"}) |
| public class TestNameSpout extends BaseRichSpout { |
| private boolean isdistributed; |
| private SpoutOutputCollector collector; |
| |
| public TestNameSpout() { |
| this(true); |
| } |
| |
| public TestNameSpout(boolean isDistributed) { |
| isdistributed = isDistributed; |
| } |
| |
| public void open(Map<String, Object> conf, TopologyContext context, |
| SpoutOutputCollector collector) { |
| this.collector = collector; |
| } |
| |
| public void close() { |
| |
| } |
| |
| public void nextTuple() { |
| Utils.sleep(100); |
| final String[] words = new String[] {"marge", "homer", "bart", "simpson", "lisa"}; |
| 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("name")); |
| } |
| |
| @Override |
| public Map<String, Object> getComponentConfiguration() { |
| if (!isdistributed) { |
| Map<String, Object> ret = new HashMap<String, Object>(); |
| ret.put(Config.TOPOLOGY_WORKERS, 1); |
| return ret; |
| } else { |
| return null; |
| } |
| } |
| } |