/**
* 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.task.OutputCollector;
import backtype.storm.task.TopologyContext;
import backtype.storm.topology.base.BaseWindowedBolt;
import backtype.storm.tuple.Tuple;
import backtype.storm.windowing.TupleWindow;
import com.alibaba.jstorm.common.metric.AsmCounter;
import com.alibaba.jstorm.metric.MetricClient;
import java.util.List;
import java.util.Map;
/**
* @author binyang.dby on 2016/7/21.
*/
public class SlidingWindowTestAvgBolt extends BaseWindowedBolt {
private MetricClient metricClient;
private AsmCounter asmCounter;
@Override
public void prepare(Map stormConf, TopologyContext context, OutputCollector collector) {
this.metricClient = new MetricClient(context);
this.asmCounter = metricClient.registerCounter("SlidingWindowTopologyTest.BoltAvgSum");
}
@Override
public void execute(TupleWindow inputWindow) {
int sum = 0;
List<Tuple> tuplesInWindow = inputWindow.get();
if (tuplesInWindow.size() > 0) {
for (Tuple tuple : tuplesInWindow) {
sum += (int) tuple.getValue(0);
}
asmCounter.update(sum / tuplesInWindow.size());
}
}
}