content: /*
   * Copyright 2010 Proofpoint, Inc.
   *
   * 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 io.airlift.discovery.client;
  
  import com.google.common.collect.ImmutableList;
  
  import java.net.URI;
  import java.net.URISyntaxException;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  import static java.util.Objects.requireNonNull;
  
  public class HttpServiceSelectorImpl
          implements HttpServiceSelector
  {
      private final ServiceSelector serviceSelector;
  
      public HttpServiceSelectorImpl(ServiceSelector serviceSelector)
      {
          requireNonNull(serviceSelector, "serviceSelector is null");
          this.serviceSelector = serviceSelector;
      }
  
      @Override
      public String getType()
      {
          return serviceSelector.getType();
      }
  
      @Override
      public String getPool()
      {
          return serviceSelector.getPool();
      }
  
      @Override
      public List<URI> selectHttpService()
      {
          List<ServiceDescriptor> serviceDescriptors = new ArrayList<>(serviceSelector.selectAllServices());
          if (serviceDescriptors.isEmpty()) {
              return ImmutableList.of();
          }
  
          // favor https over http
          List<URI> httpsUri = new ArrayList<>();
          for (ServiceDescriptor serviceDescriptor : serviceDescriptors) {
              if (serviceDescriptor.getProperties().get("https") instanceof String https) {
                  try {
                      httpsUri.add(new URI(https));
                  }
                  catch (URISyntaxException ignored) {
                  }
              }
          }
          List<URI> httpUri = new ArrayList<>();
          for (ServiceDescriptor serviceDescriptor : serviceDescriptors) {
              if (serviceDescriptor.getProperties().get("http") instanceof String http) {
                  try {
                      httpUri.add(new URI(http));
                  }
                  catch (URISyntaxException ignored) {
                  }
              }
          }
  
          // return random(https) + random(http)
          Collections.shuffle(httpsUri);
          Collections.shuffle(httpUri);
          return ImmutableList.<URI>builder().addAll(httpsUri).addAll(httpUri).build();
      }
  }
  