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.Objects;
  
  import org.yaml.snakeyaml.introspector.Property;
  
  /**
   * Holder for replacements to support backward compatibility between old and new names and types
   * of configuration parameters (CASSANDRA-15234)
   */
  public final class Replacement
  {
      /**
       * Currently we use Config class
       */
      public final Class<?> parent;
      /**
       * Old name of the configuration parameter
       */
      public final String oldName;
      /**
       * Old type of the configuration parameter
       */
      public final Class<?> oldType;
      /**
       * New name used for the configuration parameter
       */
      public final String newName;
      /**
       * Converter to be used according to the old default unit which was provided as a suffix of the configuration
       * parameter
       */
      public final Converters converter;
      public final boolean deprecated;
  
      public Replacement(Class<?> parent,
                         String oldName,
                         Class<?> oldType,
                         String newName,
                         Converters converter,
                         boolean deprecated)
      {
          this.parent = Objects.requireNonNull(parent);
          this.oldName = Objects.requireNonNull(oldName);
          this.oldType = Objects.requireNonNull(oldType);
          this.newName = Objects.requireNonNull(newName);
          this.converter = Objects.requireNonNull(converter);
          // by default deprecated is false
          this.deprecated = deprecated;
      }
  
      public Property toProperty(Property newProperty)
      {
          return new ForwardingProperty(oldName, oldType, newProperty)
          {
              @Override
              public void set(Object o, Object o1) throws Exception
              {
                  newProperty.set(o, converter.convert(o1));
              }
  
              @Override
              public Object get(Object o)
              {
                  return converter.unconvert(newProperty.get(o));
              }
          };
      }
  
      public boolean isValueFormatReplacement()
      {
          return oldName.equals(newName);
      }
  }
  