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.controller;
  
  import org.apache.kafka.common.config.ConfigResource;
  
  import java.util.Map;
  
  
  public interface ConfigurationValidator {
      ConfigurationValidator NO_OP = new ConfigurationValidator() {
          @Override
          public void validate(ConfigResource resource) { }
  
          @Override
          public void validate(ConfigResource resource, Map<String, String> newConfigs, Map<String, String> existingConfigs) { }
      };
  
      /**
       * Throws an ApiException if the given resource is invalid to describe.
       *
       * @param resource      The configuration resource.
       */
      void validate(ConfigResource resource);
  
      /**
       * Throws an ApiException if a configuration is invalid for the given resource.
       *
       * @param resource               The configuration resource.
       * @param newConfigs             The new configuration.
       * @param existingConfigs        The existing configuration.
       */
      void validate(ConfigResource resource, Map<String, String> newConfigs, Map<String, String> existingConfigs);
  }
  