/**
* 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;
}
}