blob: 54f7dcbfc9d97f2badec224f533fe0a3e7bb12da [file] [log] [blame]
package org.apache.helix.zookeeper.datamodel.serializer;
/*
* 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.
*/
import java.io.ByteArrayInputStream;
import java.io.StringWriter;
import com.fasterxml.jackson.databind.DeserializationConfig;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.MapperFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationConfig;
import com.fasterxml.jackson.databind.SerializationFeature;
import org.apache.helix.zookeeper.exception.ZkClientException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Serializes and deserializes data of a generic type using Jackson
*/
public class JacksonPayloadSerializer implements PayloadSerializer {
private static Logger logger = LoggerFactory.getLogger(JacksonPayloadSerializer.class);
@Override
public <T> byte[] serialize(final T data) {
if (data == null) {
return null;
}
ObjectMapper mapper = new ObjectMapper();
SerializationConfig serializationConfig = mapper.getSerializationConfig();
mapper.enable(SerializationFeature.INDENT_OUTPUT);
mapper.enable(MapperFeature.AUTO_DETECT_FIELDS);
mapper.enable(MapperFeature.CAN_OVERRIDE_ACCESS_MODIFIERS);
StringWriter sw = new StringWriter();
try {
mapper.writeValue(sw, data);
} catch (Exception e) {
logger.error("Exception during payload data serialization.", e);
throw new ZkClientException(e);
}
return sw.toString().getBytes();
}
@Override
public <T> T deserialize(final Class<T> clazz, final byte[] bytes) {
if (bytes == null || bytes.length == 0) {
return null;
}
ObjectMapper mapper = new ObjectMapper();
ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
DeserializationConfig deserializationConfig = mapper.getDeserializationConfig();
mapper.enable(MapperFeature.AUTO_DETECT_FIELDS);
mapper.enable(MapperFeature.AUTO_DETECT_SETTERS);
mapper.enable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
try {
T payload = mapper.readValue(bais, clazz);
return payload;
} catch (Exception e) {
logger.error("Exception during deserialization of payload bytes: " + new String(bytes), e);
return null;
}
}
}