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.tick;
  
  import backtype.storm.task.OutputCollector;
  import backtype.storm.task.TopologyContext;
  import backtype.storm.topology.IRichBolt;
  import backtype.storm.topology.OutputFieldsDeclarer;
  import backtype.storm.tuple.Tuple;
  import backtype.storm.utils.TupleHelpers;
  import com.alibaba.jstorm.common.metric.AsmCounter;
  import com.alibaba.jstorm.common.metric.AsmMeter;
  import com.alibaba.jstorm.metric.MetricClient;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.Map;
  
  /**
   * @author binyang.dby on 2016/7/21.
   */
  public class TickTupleTestBolt implements IRichBolt{
      private Logger LOG = LoggerFactory.getLogger(TickTupleTestBolt.class);
  
      private MetricClient metricClient;
      private AsmCounter nonTickCounter;
      private AsmMeter tickMeter;
  
      private long lastMills = 0;
  
      @Override
      public void prepare(Map map, TopologyContext topologyContext, OutputCollector outputCollector) {
          this.metricClient = new MetricClient(topologyContext);
          this.nonTickCounter = metricClient.registerCounter("TickTupleTest.NonTickCounter");
          this.tickMeter = metricClient.registerMeter("TickTupleTest.TickMeter");
      }
  
      @Override
      public void execute(Tuple tuple) {
          if(TupleHelpers.isTickTuple(tuple)) {
              LOG.info("Tick! Seconds from last receive = " + (System.currentTimeMillis() - lastMills)/1000f);
              lastMills = System.currentTimeMillis();
              tickMeter.mark();
          }
          else
              nonTickCounter.inc();
      }
  
      @Override
      public void cleanup() {
  
      }
  
      @Override
      public void declareOutputFields(OutputFieldsDeclarer outputFieldsDeclarer) {
  
      }
  
      @Override
      public Map<String, Object> getComponentConfiguration() {
          return null;
      }
  }
  