| 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 org.apache.helix.zookeeper.exception.ZkClientException; |
| import org.codehaus.jackson.map.DeserializationConfig; |
| import org.codehaus.jackson.map.ObjectMapper; |
| import org.codehaus.jackson.map.SerializationConfig; |
| 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(); |
| serializationConfig.set(SerializationConfig.Feature.INDENT_OUTPUT, true); |
| serializationConfig.set(SerializationConfig.Feature.AUTO_DETECT_FIELDS, true); |
| serializationConfig.set(SerializationConfig.Feature.CAN_OVERRIDE_ACCESS_MODIFIERS, true); |
| 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(); |
| deserializationConfig.set(DeserializationConfig.Feature.AUTO_DETECT_FIELDS, true); |
| deserializationConfig.set(DeserializationConfig.Feature.AUTO_DETECT_SETTERS, true); |
| deserializationConfig.set(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, true); |
| 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; |
| } |
| } |
| } |