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.hdfs.trident.rotation;
  
  
  import storm.trident.tuple.TridentTuple;
  
  import java.util.Timer;
  import java.util.TimerTask;
  import java.util.concurrent.atomic.AtomicBoolean;
  
  
  public class TimedRotationPolicy implements FileRotationPolicy {
  
      public static enum TimeUnit {
  
          SECONDS((long)1000),
          MINUTES((long)1000*60),
          HOURS((long)1000*60*60),
          DAYS((long)1000*60*60*24);
  
          private long milliSeconds;
  
          private TimeUnit(long milliSeconds){
              this.milliSeconds = milliSeconds;
          }
  
          public long getMilliSeconds(){
              return milliSeconds;
          }
      }
  
      private long interval;
      private Timer rotationTimer;
      private AtomicBoolean rotationTimerTriggered = new AtomicBoolean();
  
  
      public TimedRotationPolicy(float count, TimeUnit units){
          this.interval = (long)(count * units.getMilliSeconds());
      }
      /**
       * Called for every tuple the HdfsBolt executes.
       *
       * @param tuple  The tuple executed.
       * @param offset current offset of file being written
       * @return true if a file rotation should be performed
       */
      @Override
      public boolean mark(TridentTuple tuple, long offset) {
          return rotationTimerTriggered.get();
      }
  
      @Override
      public boolean mark(long offset) {
          return rotationTimerTriggered.get();
      }
  
      /**
       * Called after the HdfsBolt rotates a file.
       */
      @Override
      public void reset() {
          rotationTimerTriggered.set(false);
      }
  
      public long getInterval(){
          return this.interval;
      }
  
      /**
       * Start the timer to run at fixed intervals.
       */
      @Override
      public void start() {
          rotationTimer = new Timer(true);
          TimerTask task = new TimerTask() {
              @Override
              public void run() {
                  rotationTimerTriggered.set(true);
              }
          };
          rotationTimer.scheduleAtFixedRate(task, interval, interval);
      }
  }
  