content: /**
   * 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 com.jstorm.example.unittests.window;
  
  import backtype.storm.Config;
  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;
  import com.alibaba.jstorm.utils.JStormUtils;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Random;
  
  /**
   * @author binyang.dby on 2016/7/11.
   *
   * basically the same as TestWordSpout, just add some code to write the emit sequence to file for Assert.
   */
  public class WindowTestWordSpout extends BaseRichSpout
  {
      private SpoutOutputCollector collector;
      private String[] words = new String[] { "nathan", "mike", "jackson", "golda", "bertels" };
      private Random random = new Random();
  
      @Override
      public void declareOutputFields(OutputFieldsDeclarer declarer) {
          declarer.declare(new Fields("word"));
      }
  
      @Override
      public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) {
          this.collector = collector;
      }
  
      @Override
      public void nextTuple() {
          JStormUtils.sleepMs(100);
          String word = words[random.nextInt(words.length)];
          collector.emit(new Values(word));
      }
  
      @Override
      public Map<String, Object> getComponentConfiguration()
      {
          Map<String, Object> conf = new HashMap<String, Object>();
          conf.put(Config.TOPOLOGY_MAX_TASK_PARALLELISM, 1);
          return conf;
      }
  }
  