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 java.nio.ByteBuffer;
  
  public class BooleanDeserializer implements Deserializer<Boolean> {
      private static final byte TRUE = 0x01;
      private static final byte FALSE = 0x00;
  
      @Override
      public Boolean deserialize(final String topic, final byte[] data) {
          if (data == null) {
              return null;
          }
  
          if (data.length != 1) {
              throw new SerializationException("Size of data received by BooleanDeserializer is not 1");
          }
  
          if (data[0] == TRUE) {
              return true;
          } else if (data[0] == FALSE) {
              return false;
          } else {
              throw new SerializationException("Unexpected byte received by BooleanDeserializer: " + data[0]);
          }
      }
  
      @Override
      public Boolean deserialize(String topic, Headers headers, ByteBuffer data) {
          if (data == null) {
              return null;
          }
  
          if (data.remaining() != 1) {
              throw new SerializationException("Size of data received by BooleanDeserializer is not 1");
          }
  
          final byte b = data.get(data.position());
          if (b == TRUE) {
              return true;
          } else if (b == FALSE) {
              return false;
          } else {
              throw new SerializationException("Unexpected byte received by BooleanDeserializer: " + b);
          }
      }
  }
  