content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * 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.nacos.test.naming;
  
  import com.alibaba.nacos.api.naming.NamingFactory;
  import com.alibaba.nacos.api.naming.NamingService;
  import com.alibaba.nacos.api.naming.pojo.Instance;
  import com.alibaba.nacos.naming.NamingApp;
  
  import org.junit.Assert;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.springframework.boot.test.context.SpringBootTest;
  import org.springframework.boot.web.server.LocalServerPort;
  import org.springframework.test.context.junit4.SpringRunner;
  
  import java.util.Arrays;
  import java.util.List;
  import java.util.concurrent.TimeUnit;
  import static com.alibaba.nacos.test.naming.NamingBase.*;
  
  /**
   * Created by wangtong.wt on 2018/6/20.
   *
   * @author wangtong.wt
   * @date 2018/6/20
   */
  @RunWith(SpringRunner.class)
  @SpringBootTest(classes = NamingApp.class, properties = {"server.servlet.context-path=/nacos"},
      webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
  public class SelectOneHealthyInstance_ITCase {
  
      private NamingService naming;
      @LocalServerPort
      private int port;
      @Before
      public void init() throws Exception{
          NamingBase.prepareServer(port);
          if (naming == null) {
              //TimeUnit.SECONDS.sleep(10);
              naming = NamingFactory.createNamingService("127.0.0.1"+":"+port);
          }
          while (true) {
              if (!"UP".equals(naming.getServerStatus())) {
                  Thread.sleep(1000L);
                  continue;
              }
              break;
          }
      }
  
  
      /**
       * 获取一个健康的Instance
       * @throws Exception
       */
      @Test
      public void selectOneHealthyInstances() throws Exception {
          String serviceName = randomDomainName();
          naming.registerInstance(serviceName, "127.0.0.1", TEST_PORT);
          naming.registerInstance(serviceName, "127.0.0.1", 60000);
  
          TimeUnit.SECONDS.sleep(2);
          Instance instance = naming.selectOneHealthyInstance(serviceName);
  
          List<Instance> instancesGet = naming.getAllInstances(serviceName);
  
          for (Instance instance1 : instancesGet) {
              if (instance1.getIp().equals(instance.getIp())&&
                  instance1.getPort() == instance.getPort()) {
                  Assert.assertTrue(instance.isHealthy());
                  Assert.assertTrue(verifyInstance(instance1, instance));
                  return;
              }
          }
  
          Assert.fail();
      }
  
      /**
       * 获取指定单个cluster中一个健康的Instance
       * @throws Exception
       */
      @Test
      public void selectOneHealthyInstancesCluster() throws Exception {
          String serviceName = randomDomainName();
          naming.registerInstance(serviceName, "127.0.0.1", TEST_PORT, "c1");
          naming.registerInstance(serviceName, "127.0.0.1", 60000, "c1");
          naming.registerInstance(serviceName, "1.1.1.1", TEST_PORT, "c1");
          naming.registerInstance(serviceName, "127.0.0.1", 60001, "c1");
          naming.registerInstance(serviceName, "127.0.0.1", 60002, "c2");
  
          TimeUnit.SECONDS.sleep(2);
          Instance instance = naming.selectOneHealthyInstance(serviceName, Arrays.asList("c1"));
  
          Assert.assertNotSame("1.1.1.1", instance.getIp());
          Assert.assertTrue(instance.getPort() != 60002);
  
          List<Instance> instancesGet = naming.getAllInstances(serviceName);
  
          for (Instance instance1 : instancesGet) {
              if (instance1.getIp().equals(instance.getIp())&&
                  instance1.getPort() == instance.getPort()) {
                  Assert.assertTrue(instance.isHealthy());
                  Assert.assertTrue(verifyInstance(instance1, instance));
                  return;
              }
          }
  
          Assert.fail();
      }
  
      /**
       * 获取指定多个cluster中一个健康的Instance
       * @throws Exception
       */
      @Test
      public void selectOneHealthyInstancesClusters() throws Exception {
          String serviceName = randomDomainName();
          naming.registerInstance(serviceName, "1.1.1.1", TEST_PORT, "c1");
          naming.registerInstance(serviceName, "127.0.0.1", TEST_PORT, "c1");
          naming.registerInstance(serviceName, "127.0.0.1", 60000, "c1");
          naming.registerInstance(serviceName, "127.0.0.1", 60001, "c2");
  
          TimeUnit.SECONDS.sleep(2);
          Instance instance = naming.selectOneHealthyInstance(serviceName, Arrays.asList("c1", "c2"));
          Assert.assertNotSame("1.1.1.1", instance.getIp());
  
          List<Instance> instancesGet = naming.getAllInstances(serviceName);
  
          for (Instance instance1 : instancesGet) {
              if (instance1.getIp().equals(instance.getIp()) &&
                  instance1.getPort() == instance.getPort()) {
                  Assert.assertTrue(instance.isHealthy());
                  Assert.assertTrue(verifyInstance(instance1, instance));
                  return;
              }
          }
  
          Assert.fail();
      }
  }
  