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 test.plugins;
  
  import org.apache.kafka.common.config.ConfigDef;
  import org.apache.kafka.connect.components.Versioned;
  import org.apache.kafka.connect.data.Schema;
  import org.apache.kafka.connect.data.SchemaAndValue;
  import org.apache.kafka.connect.storage.HeaderConverter;
  
  import java.util.Map;
  
  /**
   * Header Converter to test multiverioning of plugins.
   * Any instance of the string PLACEHOLDER_FOR_VERSION will be replaced with the actual version during plugin compilation.
   */
  public class VersionedHeaderConverter implements HeaderConverter, Versioned {
  
      public VersionedHeaderConverter() {
          super();
      }
  
      @Override
      public SchemaAndValue toConnectHeader(String topic, String headerKey, byte[] value) {
          return null;
      }
  
      @Override
      public byte[] fromConnectHeader(String topic, String headerKey, Schema schema, Object value) {
          return new byte[0];
      }
  
      @Override
      public void configure(final Map<String, ?> configs) {
      }
  
      @Override
      public ConfigDef config() {
          return new ConfigDef()
                  // version specific config will have the defaul value (PLACEHOLDER_FOR_VERSION) replaced with the actual version during plugin compilation
                  // this will help with testing differnt configdef for different version of header converter
                  .define("version-specific-config", ConfigDef.Type.STRING, "PLACEHOLDER_FOR_VERSION", ConfigDef.Importance.HIGH, "version specific docs")
                  .define("other-config", ConfigDef.Type.STRING, "defaultVal", ConfigDef.Importance.HIGH, "other docs");
      }
  
      @Override
      public String version() {
          return "PLACEHOLDER_FOR_VERSION";
      }
  
      @Override
      public void close() {
      }
  }
  