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.kafka.connect.runtime.rest;
  
  import org.glassfish.jersey.server.ResourceConfig;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.Map;
  import java.util.Objects;
  
  import jakarta.ws.rs.core.Configurable;
  import jakarta.ws.rs.core.Configuration;
  
  /**
   * The implementation delegates to {@link ResourceConfig} so that we can handle duplicate
   * registrations deterministically by not re-registering them again.
   */
  public class ConnectRestConfigurable implements Configurable<ResourceConfig> {
  
      private static final Logger log = LoggerFactory.getLogger(ConnectRestConfigurable.class);
  
      private static final boolean ALLOWED_TO_REGISTER = true;
      private static final boolean NOT_ALLOWED_TO_REGISTER = false;
  
      private final ResourceConfig resourceConfig;
  
      public ConnectRestConfigurable(ResourceConfig resourceConfig) {
          Objects.requireNonNull(resourceConfig, "ResourceConfig can't be null");
          this.resourceConfig = resourceConfig;
      }
  
  
      @Override
      public Configuration getConfiguration() {
          return resourceConfig.getConfiguration();
      }
  
      @Override
      public ResourceConfig property(String name, Object value) {
          return resourceConfig.property(name, value);
      }
  
      @Override
      public ResourceConfig register(Object component) {
          if (allowedToRegister(component)) {
              resourceConfig.register(component);
          }
          return resourceConfig;
      }
  
      @Override
      public ResourceConfig register(Object component, int priority) {
          if (allowedToRegister(component)) {
              resourceConfig.register(component, priority);
          }
          return resourceConfig;
      }
  
      @Override
      public ResourceConfig register(Object component, Map<Class<?>, Integer> contracts) {
          if (allowedToRegister(component)) {
              resourceConfig.register(component, contracts);
          }
          return resourceConfig;
      }
  
      @Override
      public ResourceConfig register(Object component, Class<?>... contracts) {
          if (allowedToRegister(component)) {
              resourceConfig.register(component, contracts);
          }
          return resourceConfig;
      }
  
      @Override
      public ResourceConfig register(Class<?> componentClass, Map<Class<?>, Integer> contracts) {
          if (allowedToRegister(componentClass)) {
              resourceConfig.register(componentClass, contracts);
          }
          return resourceConfig;
      }
  
      @Override
      public ResourceConfig register(Class<?> componentClass, Class<?>... contracts) {
          if (allowedToRegister(componentClass)) {
              resourceConfig.register(componentClass, contracts);
          }
          return resourceConfig;
      }
  
      @Override
      public ResourceConfig register(Class<?> componentClass, int priority) {
          if (allowedToRegister(componentClass)) {
              resourceConfig.register(componentClass, priority);
          }
          return resourceConfig;
      }
  
      @Override
      public ResourceConfig register(Class<?> componentClass) {
          if (allowedToRegister(componentClass)) {
              resourceConfig.register(componentClass);
          }
          return resourceConfig;
      }
  
      private boolean allowedToRegister(Object component) {
          if (resourceConfig.isRegistered(component)) {
              log.warn("The resource {} is already registered", component);
              return NOT_ALLOWED_TO_REGISTER;
          }
          return ALLOWED_TO_REGISTER;
      }
  
      private boolean allowedToRegister(Class<?> componentClass) {
          if (resourceConfig.isRegistered(componentClass)) {
              log.warn("The resource {} is already registered", componentClass);
              return NOT_ALLOWED_TO_REGISTER;
          }
          return ALLOWED_TO_REGISTER;
      }
  }
  