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.cassandra.config;
  
  import java.util.function.Consumer;
  
  import org.apache.cassandra.exceptions.ConfigurationException;
  
  import static org.apache.cassandra.config.CassandraRelevantProperties.CONFIG_LOADER;
  
  /**
   * Helper class for programmatically overriding individual config values before DatabaseDescriptor is bootstrapped.
   */
  public class OverrideConfigurationLoader implements ConfigurationLoader
  {
  
      private static Consumer<Config> configModifier;
  
      public Config loadConfig() throws ConfigurationException
      {
          YamlConfigurationLoader loader = new YamlConfigurationLoader();
          Config config = loader.loadConfig();
          configModifier.accept(config);
          return config;
      }
  
      public static void override(Consumer<Config> modifier)
      {
          CONFIG_LOADER.setString(OverrideConfigurationLoader.class.getName());
          configModifier = modifier;
      }
  }
  