/**
* 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.batch;
import backtype.storm.task.TopologyContext;
import backtype.storm.topology.BasicOutputCollector;
import backtype.storm.topology.FailedException;
import backtype.storm.topology.OutputFieldsDeclarer;
import backtype.storm.tuple.Fields;
import backtype.storm.tuple.Tuple;
import backtype.storm.tuple.Values;
import com.alibaba.jstorm.batch.BatchId;
import com.alibaba.jstorm.batch.IBatchSpout;
import com.alibaba.jstorm.utils.JStormUtils;
import java.util.Map;
import java.util.Random;
/**
* @author binyang.dby on 2016/7/20.
*/
public class SimpleBatchTestSpout implements IBatchSpout
{
private Random random;
public final static int BATCH_SIZE = 30;
@Override
public void prepare(Map map, TopologyContext topologyContext) {
random = new Random(System.currentTimeMillis());
}
@Override
public void execute(Tuple tuple, BasicOutputCollector basicOutputCollector) {
BatchId batchId = (BatchId) tuple.getValue(0);
if(batchId.getId() > 100)
{
JStormUtils.sleepMs(1000);
return;
}
for (int i = 0; i < BATCH_SIZE; i++) {
long value = random.nextInt(100);
basicOutputCollector.emit(new Values(batchId, value));
}
}
@Override
public void cleanup() {
}
@Override
public byte[] commit(BatchId batchId) throws FailedException {
System.out.println("SimpleBatchTestSpout #commit");
return new byte[0];
}
@Override
public void revert(BatchId batchId, byte[] bytes) {
System.out.println("SimpleBatchTestSpout #revert");
}
@Override
public void declareOutputFields(OutputFieldsDeclarer outputFieldsDeclarer) {
outputFieldsDeclarer.declare(new Fields("BatchId", "Value"));
}
@Override
public Map<String, Object> getComponentConfiguration() {
return null;
}
}