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.shared.arbitrate.setl.monitor.node;
  
  import java.util.Arrays;
  import java.util.List;
  
  import mockit.Mock;
  import mockit.Mockit;
  
  import org.testng.annotations.AfterMethod;
  import org.testng.annotations.BeforeClass;
  import org.testng.annotations.BeforeMethod;
  import org.testng.annotations.Test;
  
  import com.alibaba.otter.shared.arbitrate.BaseEventTest;
  import com.alibaba.otter.shared.arbitrate.impl.config.ArbitrateConfigUtils;
  import com.alibaba.otter.shared.arbitrate.impl.manage.NodeArbitrateEvent;
  import com.alibaba.otter.shared.arbitrate.impl.setl.monitor.NodeMonitor;
  import com.alibaba.otter.shared.common.model.config.channel.Channel;
  import com.alibaba.otter.shared.common.model.config.node.Node;
  import com.alibaba.otter.shared.common.model.config.pipeline.Pipeline;
  
  /**
   * 测试下Node的监听事件
   * 
   * @author jianghang 2011-9-19 下午01:21:08
   * @version 4.0.0
   */
  public class NodeMonitorTest extends BaseEventTest {
  
      private Long               channelId  = 100L;
      // private Long pipelineId = 100L;
      private NodeArbitrateEvent nodeEvent;
      private final Node         node1      = new Node();
      private final Node         node2      = new Node();
      private final Node         node3      = new Node();
      private final Node         node4      = new Node();
      private List<Node>         sourceList = Arrays.asList(node1, node3);
      private List<Node>         targetList = Arrays.asList(node2, node4);
  
      @BeforeClass
      public void init() {
          // 初始化节点
          Mockit.setUpMock(ArbitrateConfigUtils.class, new Object() {
  
              @Mock
              public Channel getChannel(Long pipelineId) {
                  Channel channel = new Channel();
                  channel.setId(channelId);
                  return channel;
              }
  
              @Mock
              public Pipeline getOppositePipeline(Long pipelineId) {
                  Pipeline pipeline = new Pipeline();
                  pipeline.setId(pipelineId);
                  return pipeline;
              }
  
              @Mock
              public Pipeline getPipeline(Long pipelineId) {
                  Pipeline pipeline = new Pipeline();
                  pipeline.setSelectNodes(sourceList);
                  pipeline.setExtractNodes(sourceList);
                  pipeline.setLoadNodes(targetList);
                  return pipeline;
              }
  
          });
  
          node1.setId(1L);
          node2.setId(2L);
          node3.setId(3L);
          node4.setId(4L);
  
          getZookeeper();
          nodeEvent = new NodeArbitrateEvent();
      }
  
      @BeforeMethod
      public void setUp() {
          nodeEvent.init(node1.getId());
          nodeEvent.init(node2.getId());
          nodeEvent.init(node3.getId());
          nodeEvent.init(node4.getId());
      }
  
      @AfterMethod
      public void tearDown() {
          nodeEvent.destory(node1.getId());
          nodeEvent.destory(node2.getId());
          nodeEvent.destory(node3.getId());
          nodeEvent.destory(node4.getId());
      }
  
      @Test
      public void testAliveNodes_all() {
          NodeMonitor nodeMonitor = new NodeMonitor();
          List<Long> nodes = nodeMonitor.getAliveNodes();
          want.bool(nodes.size() == 4).is(true);
          want.number(nodes.get(0)).isEqualTo(node1.getId());
          want.number(nodes.get(1)).isEqualTo(node2.getId());
          want.number(nodes.get(2)).isEqualTo(node3.getId());
          want.number(nodes.get(3)).isEqualTo(node4.getId());
      }
  
      @Test
      public void testAliveNodes_dead() {
          NodeMonitor nodeMonitor = new NodeMonitor();
          nodeEvent.destory(node1.getId()); // 关闭一个节点
          sleep(); // 需要间隔一定的时间，zookeeper需要推送数据到NodeMonitor，时间间隔在10ms以内
          List<Long> nodes = nodeMonitor.getAliveNodes();
          want.bool(nodes.size() == 3).is(true);
          want.number(nodes.get(0)).isEqualTo(node2.getId());
          want.number(nodes.get(1)).isEqualTo(node3.getId());
          want.number(nodes.get(2)).isEqualTo(node4.getId());
  
          nodeEvent.init(node1.getId()); // 开启一个节点
          nodeEvent.destory(node3.getId()); // 关闭一个节点
          sleep();
          nodes = nodeMonitor.getAliveNodes();
          want.bool(nodes.size() == 3).is(true);
          want.number(nodes.get(0)).isEqualTo(node1.getId());
          want.number(nodes.get(1)).isEqualTo(node2.getId());
          want.number(nodes.get(2)).isEqualTo(node4.getId());
      }
  
  }
  