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.testing;
  
  import com.google.inject.Binder;
  import com.google.inject.Key;
  import com.google.inject.Module;
  import com.google.inject.Provides;
  import com.google.inject.Scopes;
  import com.google.inject.Singleton;
  import io.airlift.discovery.client.Announcer;
  import io.airlift.discovery.client.DiscoveryAnnouncementClient;
  import io.airlift.discovery.client.DiscoveryLookupClient;
  import io.airlift.discovery.client.MergingServiceSelectorFactory;
  import io.airlift.discovery.client.ServiceAnnouncement;
  import io.airlift.discovery.client.ServiceSelector;
  import io.airlift.discovery.client.ServiceSelectorFactory;
  import io.airlift.discovery.client.ServiceSelectorManager;
  import io.airlift.node.NodeInfo;
  
  import static com.google.inject.multibindings.Multibinder.newSetBinder;
  
  public class TestingDiscoveryModule
          implements Module
  {
      @Override
      public void configure(Binder binder)
      {
          // bind discovery client and dependencies
          binder.bind(InMemoryDiscoveryClient.class).in(Scopes.SINGLETON);
          binder.bind(DiscoveryAnnouncementClient.class).to(Key.get(InMemoryDiscoveryClient.class)).in(Scopes.SINGLETON);
          binder.bind(DiscoveryLookupClient.class).to(Key.get(InMemoryDiscoveryClient.class)).in(Scopes.SINGLETON);
  
          // bind announcer
          binder.bind(Announcer.class).in(Scopes.SINGLETON);
          // Must create a multibinder for service announcements or construction will fail if no
          // service announcements are bound, which is legal for processes that don't have public services
          newSetBinder(binder, ServiceAnnouncement.class);
  
          binder.bind(SimpleServiceSelectorFactory.class).in(Scopes.SINGLETON);
          binder.bind(ServiceSelectorFactory.class).to(MergingServiceSelectorFactory.class).in(Scopes.SINGLETON);
  
          // bind selector manager with initial empty multibinder
          newSetBinder(binder, ServiceSelector.class);
          binder.bind(ServiceSelectorManager.class).in(Scopes.SINGLETON);
      }
  
      @Provides
      @Singleton
      public MergingServiceSelectorFactory createMergingServiceSelectorFactory(
              SimpleServiceSelectorFactory factory,
              Announcer announcer,
              NodeInfo nodeInfo)
      {
          return new MergingServiceSelectorFactory(factory, announcer, nodeInfo);
      }
  }
  