contrib/src/main/java/com/datatorrent/contrib/kafka/KafkaJsonEncoder.java

/**
 * 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 com.datatorrent.contrib.kafka;

import org.codehaus.jackson.map.ObjectMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * KafkaJsonEncoder
 *
 * @since 2.0.0
 */
public class KafkaJsonEncoder implements kafka.serializer.Encoder<Object>
{
  private static final Logger LOG = LoggerFactory.getLogger(KafkaJsonEncoder.class);
  private final ObjectMapper mapper = new ObjectMapper();

  public KafkaJsonEncoder(kafka.utils.VerifiableProperties props)
  {
  }

  @Override
  public byte[] toBytes(Object arg0)
  {
    try {
      return mapper.writeValueAsBytes(arg0);
    } catch (Exception e) {
      LOG.error("Failed to encode {}", arg0, e);
      throw new RuntimeException(e);
    }
  }
}