| /** |
| * 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 java.util.Map; |
| import java.util.Random; |
| |
| import backtype.storm.spout.SpoutOutputCollector; |
| import backtype.storm.task.TopologyContext; |
| import backtype.storm.topology.OutputFieldsDeclarer; |
| import backtype.storm.topology.base.BaseRichSpout; |
| import backtype.storm.tuple.Fields; |
| import backtype.storm.tuple.Values; |
| |
| public class TestWordSpout extends BaseRichSpout { |
| |
| private static final long serialVersionUID = -6923231632469169744L; |
| private SpoutOutputCollector collector; |
| private String[] words; |
| private Random rand; |
| |
| @SuppressWarnings("rawtypes") |
| public void open( |
| Map conf, |
| TopologyContext context, |
| SpoutOutputCollector aCollector) { |
| collector = aCollector; |
| words = new String[]{"Africa", "Europe", "Asia", "America", "Antarctica", "Australia"}; |
| rand = new Random(); |
| } |
| |
| public void close() { |
| } |
| |
| public void nextTuple() { |
| 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")); |
| } |
| } |