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.analyzer.agent.kafka.mock;
  
  import com.google.common.collect.Maps;
  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 abstract class MockModuleProvider implements ModuleServiceHolder {
      protected Map<Class<? extends Service>, Service> serviceMap = Maps.newHashMap();
  
      public MockModuleProvider() {
          register();
      }
  
      protected abstract void register();
  
      @Override
      public void registerServiceImplementation(final Class<? extends Service> serviceType,
                                                final Service service) throws ServiceNotProvidedException {
          serviceMap.put(serviceType, service);
      }
  
      @Override
      public <T extends Service> T getService(final Class<T> serviceType) throws ServiceNotProvidedException {
          return (T) serviceMap.get(serviceType);
      }
  }
  