proto使用

生成逻辑请参考
https://blog.csdn.net/qq_43645782/article/details/127112663

proto

syntax = "proto3";message testRequest {string id = 1;
}

python dict和message

import jsonfrom google.protobuf.json_format import MessageToJson, MessageToDict
from google.protobuf.json_format import ParseDict, Parsefrom grpc0.code.test_pb2 import testRequestif __name__ == '__main__':proto_obj = testRequest(id="123",)print(f"{MessageToDict(proto_obj)=}")print(f"{MessageToJson(proto_obj)=}")json_obj = {"id": "456"}print(f"{Parse(json.dumps(json_obj), testRequest)=}")print(f"{ParseDict(json_obj, testRequest)=}")

MessageToDict(proto_obj)={'id': '123'}
MessageToJson(proto_obj)='{\n  "id": "123"\n}'
Parse(json.dumps(json_obj), testRequest)=<class 'test_pb2.testRequest'>
ParseDict(json_obj, testRequest)=<class 'test_pb2.testRequest'>

python message序列化

import jsonfrom google.protobuf.json_format import MessageToJson, MessageToDict
from google.protobuf.json_format import ParseDict, Parsefrom grpc0.code.test_pb2 import testRequestif __name__ == '__main__':proto_obj = testRequest(id="123",)proto_bytes = proto_obj.SerializeToString()print(proto_bytes)proto_obj1 = testRequest()proto_obj1.ParseFromString(proto_bytes)print(proto_obj)print(proto_obj1)

b'\n\x03123'
id: "123"
id: "123"

golang

在golang使用比较简单，protobuf生成的go struct是支持proto和json的序列化和反序列化的
golang对于proto的序列化与反序列化同样需要使用专用库来实现，效果比较好

"google.golang.org/protobuf/encoding/protojson"

proto在初始化的时候已经将message的信息保存到内存内
proto进行反序列化时，在遍历到每一个json key时，会尝试在内存中查找key是否可以对应上，会分别查询proto的name与json name
代码可以参考

https://github.com/protocolbuffers/protobuf-go/blob/master/encoding/protojson/decode.go#L175

message序列化

out, err := proto.Marshal(protoObj)

err := proto.Unmarshal(in, &protoObj)

message转json

out, err := protojson.Marshal(protoObj)

err := protojson.Unmarshal(in, &protoObj)