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.kafka.common.serialization;
  
  import org.apache.kafka.common.errors.SerializationException;
  
  import java.io.UnsupportedEncodingException;
  import java.nio.charset.StandardCharsets;
  import java.util.Map;
  import java.util.UUID;
  
  /**
   *  We are converting UUID to String before serializing. String encoding defaults to UTF8 and can be customized by setting
   *  the property key.deserializer.encoding, value.deserializer.encoding or deserializer.encoding. The first two take precedence over the last.
   */
  public class UUIDSerializer implements Serializer<UUID> {
      private String encoding = StandardCharsets.UTF_8.name();
  
      @Override
      public void configure(Map<String, ?> configs, boolean isKey) {
          String propertyName = isKey ? "key.serializer.encoding" : "value.serializer.encoding";
          Object encodingValue = configs.get(propertyName);
          if (encodingValue == null)
              encodingValue = configs.get("serializer.encoding");
          if (encodingValue instanceof String)
              encoding = (String) encodingValue;
      }
  
      @Override
      public byte[] serialize(String topic, UUID data) {
          try {
              if (data == null)
                  return null;
              else
                  return data.toString().getBytes(encoding);
          } catch (UnsupportedEncodingException e) {
              throw new SerializationException("Error when serializing UUID to byte[] due to unsupported encoding " + encoding);
          }
      }
  }
  