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.transactional.spout;
  
  import java.util.Map;
  import java.util.concurrent.Executors;
  import java.util.concurrent.ScheduledExecutorService;
  import java.util.concurrent.TimeUnit;
  
  import com.alibaba.jstorm.utils.JStormUtils;
  
  import backtype.storm.spout.SpoutOutputCollector;
  import backtype.storm.task.TopologyContext;
  
  public class ScheduleTransactionSpout extends TransactionSpout {
      private ScheduledExecutorService scheduledService = null;
  
      public ScheduleTransactionSpout(ITransactionSpoutExecutor spoutExecutor) {
          super(spoutExecutor);
      }
  
      @Override
      public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) {
          super.open(conf, context, collector);
          spoutExecutor.open(conf, context, new SpoutOutputCollector(outputCollector));
  
          int threadPoolNum = JStormUtils.parseInt(conf.get("transaction.schedule.thread.pool"), 1);
          int delay = JStormUtils.parseInt(conf.get("transaction.schedule.batch.delay.ms"), 1000);
          int initDelay = delay >= 30000 ? 30000 : delay;
          if (scheduledService == null) {
              scheduledService = Executors.newScheduledThreadPool(threadPoolNum);
          }
          scheduledService.scheduleWithFixedDelay(new Runnable() {
              @Override
              public void run() {
                  process(Operation.commit, null);
              }
          }, initDelay, delay, TimeUnit.MILLISECONDS);
      }
  }