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.alibaba.jstorm.daemon.worker.timer;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import backtype.storm.Constants;
  import backtype.storm.task.TopologyContext;
  import backtype.storm.tuple.TupleImplExt;
  import backtype.storm.tuple.Values;
  import backtype.storm.utils.DisruptorQueue;
  
  import com.alibaba.jstorm.utils.TimeUtils;
  
  import java.util.concurrent.TimeUnit;
  
  public class TickTupleTrigger extends TimerTrigger {
      private static final Logger LOG = LoggerFactory.getLogger(TickTupleTrigger.class);
  
      TopologyContext topologyContext;
  
      public TickTupleTrigger(TopologyContext topologyContext, int frequency, String name, DisruptorQueue queue) {
          this.name = name;
          this.queue = queue;
          this.opCode = TimerConstants.TICK_TUPLE;
  
          if (frequency <= 0) {
              LOG.warn(" The frequency of " + name + " is invalid");
              frequency = 1000;
          }
          this.firstTime = frequency;
          this.frequency = frequency;
          this.topologyContext = topologyContext;
      }
  
      @Override
      public void register() {
          register(TimeUnit.MILLISECONDS);
      }
  
      @Override
      public void updateObject() {
          this.object = new TupleImplExt(topologyContext,
                  new Values(TimeUtils.current_time_secs()), (int) Constants.SYSTEM_TASK_ID, Constants.SYSTEM_TICK_STREAM_ID);
      }
  
  }
  