| /** |
| * 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.datatorrent.stram.support; |
| |
| import java.util.Comparator; |
| import java.util.PriorityQueue; |
| import java.util.concurrent.ScheduledFuture; |
| import java.util.concurrent.ScheduledThreadPoolExecutor; |
| import java.util.concurrent.TimeUnit; |
| |
| import com.datatorrent.common.util.ScheduledExecutorService; |
| |
| /** |
| * |
| */ |
| public class ManualScheduledExecutorService extends ScheduledThreadPoolExecutor implements ScheduledExecutorService |
| { |
| class TimedRunnable |
| { |
| public Runnable runnable; |
| public long time; |
| } |
| |
| PriorityQueue<TimedRunnable> queue = new PriorityQueue<>(16, new Comparator<TimedRunnable>() |
| { |
| @Override |
| public int compare(TimedRunnable o1, TimedRunnable o2) |
| { |
| return (int)(o1.time - o2.time); |
| } |
| }); |
| long currentTime = 0; |
| |
| public ManualScheduledExecutorService(int corePoolSize) |
| { |
| super(corePoolSize); |
| } |
| |
| @Override |
| public long getCurrentTimeMillis() |
| { |
| return currentTime; |
| } |
| |
| public void setCurrentTimeMillis(long current) |
| { |
| currentTime = current; |
| } |
| |
| @Override |
| public ScheduledFuture<?> schedule(Runnable command, long delay, TimeUnit unit) |
| { |
| TimedRunnable tr = new TimedRunnable(); |
| tr.runnable = command; |
| tr.time = getCurrentTimeMillis(); |
| queue.add(tr); |
| return null; // we do not need to worry about this since this is a test |
| } |
| |
| @Override |
| public ScheduledFuture<?> scheduleAtFixedRate(final Runnable command, long initialDelay, final long period, TimeUnit unit) |
| { |
| Runnable scheduler = new Runnable() |
| { |
| @Override |
| public void run() |
| { |
| command.run(); |
| TimedRunnable tr = new TimedRunnable(); |
| tr.runnable = this; |
| tr.time = getCurrentTimeMillis() + period; |
| queue.add(tr); |
| } |
| }; |
| |
| TimedRunnable tr = new TimedRunnable(); |
| tr.runnable = scheduler; |
| tr.time = getCurrentTimeMillis() + initialDelay; |
| queue.add(tr); |
| return null; // we do not need to worry about this since this is a test |
| } |
| |
| public void tick(long steps) |
| { |
| currentTime += steps; |
| |
| TimedRunnable tr; |
| while ((tr = queue.peek()) != null) { |
| if (tr.time > currentTime) { |
| break; |
| } |
| queue.poll(); |
| tr.runnable.run(); |
| } |
| } |
| } |