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.camel.kafkaconnector.transforms;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import org.apache.camel.kafkaconnector.utils.SchemaHelper;
  import org.apache.kafka.common.config.ConfigDef;
  import org.apache.kafka.common.config.ConfigException;
  import org.apache.kafka.connect.connector.ConnectRecord;
  import org.apache.kafka.connect.transforms.Transformation;
  import org.apache.kafka.connect.transforms.util.SimpleConfig;
  
  public class ConnectRecordValueToMapTransforms<R extends ConnectRecord<R>> implements Transformation<R> {
      public static final String FIELD_KEY_CONFIG = "key";
  
      public static final ConfigDef CONFIG_DEF = new ConfigDef()
              .define(FIELD_KEY_CONFIG, ConfigDef.Type.STRING, null, ConfigDef.Importance.MEDIUM,
                      "Transforms String-based content from Kafka into a map");
  
      private String key;
  
      @Override
      public R apply(R r) {
          Map<String, Object> targetMap = new HashMap<>();
  
          Object value = r.value();
  
          targetMap.put(key, value);
          return r.newRecord(r.topic(), r.kafkaPartition(), null, r.key(),
                  SchemaHelper.buildSchemaBuilderForType(value), targetMap, r.timestamp());
      }
  
      @Override
      public ConfigDef config() {
          return CONFIG_DEF;
      }
  
      @Override
      public void close() {
  
      }
  
      @Override
      public void configure(Map<String, ?> map) {
          final SimpleConfig config = new SimpleConfig(CONFIG_DEF, map);
  
          this.key = config.getString(FIELD_KEY_CONFIG);
  
          if (this.key == null) {
              throw new ConfigException("The ConnectRecordValueToMapTransforms transformer requires a 'key'");
          }
      }
  }