package com.snowcattle.game.service.rpc.serialize.protostuff;
/**
* Created by jwp on 2017/3/8.
*/
import com.dyuproject.protostuff.LinkedBuffer;
import com.dyuproject.protostuff.ProtostuffIOUtil;
import com.dyuproject.protostuff.Schema;
import com.dyuproject.protostuff.runtime.RuntimeSchema;
import com.snowcattle.game.service.rpc.serialize.IRpcSerialize;
import org.objenesis.Objenesis;
import org.objenesis.ObjenesisStd;
import org.springframework.stereotype.Service;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* @author tangjie<https://github.com/tang-jie>
* @filename:ProtostuffSerialize.java
* @description:ProtostuffSerialize功能模块
* @blogs http://www.cnblogs.com/jietang/
* @since 2016/10/7
*/
@Service
public class ProtostuffSerializeI implements IRpcSerialize {
private Map<Class<?>, Schema<?>> cachedSchema = new ConcurrentHashMap<>();
private Objenesis objenesis = new ObjenesisStd(true);
@SuppressWarnings("unchecked")
private <T> Schema<T> getSchema(Class<T> cls) {
Schema<T> schema = (Schema<T>) cachedSchema.get(cls);
if (schema == null) {
schema = RuntimeSchema.createFrom(cls);
if (schema != null) {
cachedSchema.put(cls, schema);
}
}
return schema;
}
/**
* 序列化(对象 -> 字节数组)
*/
@SuppressWarnings("unchecked")
public <T> byte[] serialize(T obj) {
Class<T> cls = (Class<T>) obj.getClass();
LinkedBuffer buffer = LinkedBuffer.allocate(LinkedBuffer.DEFAULT_BUFFER_SIZE);
try {
Schema<T> schema = getSchema(cls);
return ProtostuffIOUtil.toByteArray(obj, schema, buffer);
} catch (Exception e) {
throw new IllegalStateException(e.getMessage(), e);
} finally {
buffer.clear();
}
}
/**
* 反序列化(字节数组 -> 对象)
*/
public <T> T deserialize(byte[] data, Class<T> cls) {
try {
T message = (T) objenesis.newInstance(cls);
Schema<T> schema = getSchema(cls);
ProtostuffIOUtil.mergeFrom(data, message, schema);
return message;
} catch (Exception e) {
throw new IllegalStateException(e.getMessage(), e);
}
}
/**
* 生成对象
*/
public <T> T newInstance(Class<T> cls) {
try {
T message = (T) objenesis.newInstance(cls);
return message;
} catch (Exception e) {
throw new IllegalStateException(e.getMessage(), e);
}
}
}