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 org.apache.distributedlog.net;
  
  import static org.junit.Assert.assertEquals;
  
  import java.util.ArrayList;
  import java.util.List;
  import org.junit.Test;
  
  
  
  /**
   * Test update for {@link DNSResolver}s.
   */
  public class TestDNSResolver {
  
      private static final String host1 = "r1-w1rack1-1111-2222.distributedlog.io";
      private static final String host2 = "r2-w2rack2-3333-4444.distributedlog.io";
  
      @Test(timeout = 20000)
      public void testDNSResolverForRacks() {
          DNSResolver dnsResolver = new DNSResolverForRacks("");
  
          List<String> ipList = new ArrayList<String>();
          ipList.add("192.0.0.1");
          List<String> racks = dnsResolver.resolve(ipList);
          assertEquals(DNSResolverForRacks.DEFAULT_RACK, racks.get(0));
  
          List<String> unknownList = new ArrayList<String>();
          unknownList.add("unknown");
          racks = dnsResolver.resolve(unknownList);
          assertEquals(DNSResolverForRacks.DEFAULT_RACK, racks.get(0));
  
          List<String> r1List = new ArrayList<String>();
          r1List.add(host1);
          racks = dnsResolver.resolve(r1List);
          assertEquals("/r1/w1rack1", racks.get(0));
  
          List<String> r2List = new ArrayList<String>();
          r2List.add(host2);
          racks = dnsResolver.resolve(r2List);
          assertEquals("/r2/w2rack2", racks.get(0));
      }
  
      @Test(timeout = 20000)
      public void testDNSResolverForRows() {
          DNSResolver dnsResolver = new DNSResolverForRows("");
  
          List<String> ipList = new ArrayList<String>();
          ipList.add("192.0.0.1");
          List<String> rows = dnsResolver.resolve(ipList);
          assertEquals(DNSResolverForRows.DEFAULT_ROW, rows.get(0));
  
          List<String> unknownList = new ArrayList<String>();
          unknownList.add("unknown");
          rows = dnsResolver.resolve(unknownList);
          assertEquals(DNSResolverForRows.DEFAULT_ROW, rows.get(0));
  
          List<String> r1List = new ArrayList<String>();
          r1List.add(host1);
          rows = dnsResolver.resolve(r1List);
          assertEquals("/r1/w1", rows.get(0));
  
          List<String> r2List = new ArrayList<String>();
          r2List.add(host2);
          rows = dnsResolver.resolve(r2List);
          assertEquals("/r2/w2", rows.get(0));
      }
  
      @Test(timeout = 20000)
      public void testDNSResolverOverrides() {
          DNSResolver dnsResolver = new DNSResolverForRacks("r1-w1rack1-1111-2222:r3;r2-w2rack2-3333-4444:r3");
  
          List<String> r1List = new ArrayList<String>();
          r1List.add(host1);
          List<String> racks = dnsResolver.resolve(r1List);
          assertEquals("/r3/w1rack1", racks.get(0));
  
          List<String> r2List = new ArrayList<String>();
          r2List.add(host2);
          racks = dnsResolver.resolve(r2List);
          assertEquals("/r3/w2rack2", racks.get(0));
      }
  }
  