content: /*
   * Copyright 2020 Aiven Oy
   *
   * Licensed 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 io.aiven.kafka.connect.opensearch;
  
  import java.util.Arrays;
  import java.util.Locale;
  import java.util.stream.Collectors;
  
  import org.apache.kafka.common.config.ConfigDef;
  import org.apache.kafka.common.config.ConfigException;
  
  public enum IndexWriteMethod {
  
      INSERT, UPSERT;
  
      public static String possibleValues() {
          return Arrays.stream(IndexWriteMethod.values())
                  .map(IndexWriteMethod::name)
                  .map(s -> String.format("``%s``", s.toLowerCase(Locale.ROOT)))
                  .collect(Collectors.joining(", "));
      }
  
      public static final ConfigDef.Validator VALIDATOR = new ConfigDef.Validator() {
          @Override
          public void ensureValid(final String name, final Object value) {
              try {
                  IndexWriteMethod.valueOf(((String) value).toUpperCase(Locale.ROOT));
              } catch (final IllegalArgumentException e) {
                  throw new ConfigException(name, value,
                          "Index write method must be one of: " + IndexWriteMethod.possibleValues());
              }
          }
  
          @Override
          public String toString() {
              return IndexWriteMethod.possibleValues();
          }
      };
  
  }
  