content: /*
   * Copyright (C) 2010-2101 Alibaba Group Holding Limited.
   *
   * Licensed 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.otter.node.etl.load;
  
  import java.util.concurrent.Callable;
  import java.util.concurrent.CountDownLatch;
  import java.util.concurrent.ExecutorService;
  import java.util.concurrent.Executors;
  
  import org.testng.annotations.Test;
  
  import com.alibaba.otter.node.etl.BaseOtterTest;
  import com.alibaba.otter.node.etl.load.loader.weight.WeightBarrier;
  
  public class WeightBarrierTest extends BaseOtterTest {
  
      @Test
      public void test_simple() {
          final WeightBarrier barrier = new WeightBarrier(10);
          try {
              barrier.await(10);// 可以成功通过
          } catch (InterruptedException e1) {
              want.fail();
          }
  
          try {
              final CountDownLatch count = new CountDownLatch(1);
              ExecutorService executor = Executors.newCachedThreadPool();
  
              executor.submit(new Callable() {
  
                  public Object call() throws Exception {
                      Thread.sleep(1000);
                      barrier.single(11);
                      count.countDown();
                      return null;
                  }
              });
  
              barrier.await(11);// 会被阻塞
              count.await();
              executor.shutdown();
          } catch (InterruptedException e) {
              want.fail();
          }
      }
  
      @Test
      public void test_cocurrent() {
          final WeightBarrier barrier = new WeightBarrier(-1);
  
          try {
              final CountDownLatch count = new CountDownLatch(10);
              ExecutorService executor = Executors.newCachedThreadPool();
              for (int i = 0; i < 10; i++) {
                  final long index = i;
                  executor.submit(new Callable() {
  
                      public Object call() throws Exception {
                          barrier.await(index);
                          want.number(index).isLe(barrier.state());
                          count.countDown();
                          return null;
                      }
                  });
              }
              Thread.sleep(1000);
              for (int i = 0; i < 10; i++) {
                  barrier.single(i);
              }
              count.await();
              executor.shutdown();
          } catch (InterruptedException e) {
              want.fail();
          }
      }
  }
  