JsonEncoder.java

package eu.europeana.cloud.service.dps.storm.kafka;

import java.io.IOException;

import kafka.serializer.Encoder;
import kafka.utils.VerifiableProperties;

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

public class JsonEncoder implements Encoder<Object> {
	
	private static final Logger LOGGER = LoggerFactory.getLogger(JsonEncoder.class);

	public JsonEncoder(VerifiableProperties verifiableProperties) {
	}

	@Override
	public byte[] toBytes(Object object) {
		
		ObjectMapper objectMapper = new ObjectMapper();
		try {
			return objectMapper.writeValueAsString(object).getBytes();
		} catch (JsonProcessingException e) {
			LOGGER.error(String.format("Json processing failed for object: %s", object.getClass().getName()), e);
		} catch (IOException e) {
	        e.printStackTrace();
        }
		return "".getBytes();
	}
}