code: /*
   * 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.skywalking.oap.server.testing.module;
  
  import java.util.HashMap;
  import java.util.Map;
  import org.apache.skywalking.oap.server.library.module.ModuleServiceHolder;
  import org.apache.skywalking.oap.server.library.module.Service;
  import org.apache.skywalking.oap.server.library.module.ServiceNotProvidedException;
  
  public class ModuleProviderTesting implements ModuleServiceHolder {
  
      private final Map<Class<? extends Service>, Service> services = new HashMap<>();
  
      @Override
      public void registerServiceImplementation(Class<? extends Service> serviceType,
                                                Service service) throws ServiceNotProvidedException {
          if (serviceType.isInstance(service)) {
              this.services.put(serviceType, service);
          } else {
              throw new ServiceNotProvidedException(serviceType + " is not implemented by " + service);
          }
      }
  
      @Override
      public <T extends Service> T getService(Class<T> serviceType) throws ServiceNotProvidedException {
          return (T) services.get(serviceType);
      }
  }
  