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 org.apache.kafka.common.header.Headers;
  import org.apache.kafka.common.utils.Utils;
  
  import java.io.UnsupportedEncodingException;
  import java.nio.ByteBuffer;
  import java.nio.charset.StandardCharsets;
  import java.util.Map;
  import java.util.UUID;
  
  /**
   *  We are converting the byte array to String before deserializing to UUID. 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 UUIDDeserializer implements Deserializer<UUID> {
      private String encoding = StandardCharsets.UTF_8.name();
  
      @Override
      public void configure(Map<String, ?> configs, boolean isKey) {
          String propertyName = isKey ? "key.deserializer.encoding" : "value.deserializer.encoding";
          Object encodingValue = configs.get(propertyName);
          if (encodingValue == null)
              encodingValue = configs.get("deserializer.encoding");
          if (encodingValue instanceof String)
              encoding = (String) encodingValue;
      }
  
      @Override
      public UUID deserialize(String topic, byte[] data) {
          try {
              if (data == null)
                  return null;
              else
                  return UUID.fromString(new String(data, encoding));
          } catch (UnsupportedEncodingException e) {
              throw new SerializationException("Error when deserializing byte[] to UUID due to unsupported encoding " + encoding, e);
          } catch (IllegalArgumentException e) {
              throw new SerializationException("Error parsing data into UUID", e);
          }
      }
  
      @Override
      public UUID deserialize(String topic, Headers headers, ByteBuffer data) {
          try {
              if (data == null) {
                  return null;
              }
  
              if (data.hasArray()) {
                  return UUID.fromString(new String(data.array(), data.arrayOffset() + data.position(), data.remaining(), encoding));
              }
              return UUID.fromString(new String(Utils.toArray(data), encoding));
          } catch (UnsupportedEncodingException e) {
              throw new SerializationException("Error when deserializing ByteBuffer to UUID due to unsupported encoding " + encoding, e);
          } catch (IllegalArgumentException e) {
              throw new SerializationException("Error parsing data into UUID", e);
          }
      }
  }
  