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.cassandra.locator;
  
  import java.lang.reflect.Constructor;
  import java.lang.reflect.InvocationTargetException;
  import java.lang.reflect.Modifier;
  
  import org.assertj.core.api.Assertions;
  import org.junit.Test;
  import org.reflections.Reflections;
  import org.reflections.scanners.Scanners;
  import org.reflections.util.ConfigurationBuilder;
  
  import org.apache.cassandra.config.DatabaseDescriptor;
  
  public class NodeProximityEndpointCompareTest
  {
      static
      {
          DatabaseDescriptor.clientInitialization();
      }
  
      @Test
      public void allSupportEndpoint() throws InvocationTargetException, InstantiationException, IllegalAccessException
      {
          Reflections reflections = new Reflections(new ConfigurationBuilder()
                                                    .forPackage("org.apache.cassandra")
                                                    .setScanners(Scanners.SubTypes)
                                                    .setExpandSuperTypes(true));
  
          for (Class<? extends NodeProximity> klass : reflections.getSubTypesOf(NodeProximity.class))
          {
              if (Modifier.isAbstract(klass.getModifiers())
                  || Modifier.isPrivate(klass.getModifiers()) // private can not be created normally, so these are scoped to tests and can be ignored
                  || klass.isAnonymousClass())
                  continue;
              Constructor<? extends NodeProximity> declaredConstructor;
              try
              {
                  declaredConstructor = klass.getDeclaredConstructor();
              }
              catch (NoSuchMethodException e)
              {
                  // DynamicEndpointSnitch or test snitch... we can not create this normally
                  continue;
              }
              if (Modifier.isPrivate(declaredConstructor.getModifiers()))
                  continue;
              NodeProximity proximity = declaredConstructor.newInstance();
              Assertions.assertThat(proximity.supportCompareByEndpoint())
                        .describedAs("Snitch %s does not support compare by endpoint!", proximity.getClass())
                        .isTrue();
          }
      }
  }