


Is `google/protobuf/struct.proto` the Best Way to Send Dynamic JSON Data via gRPC?
Is "google/protobuf/struct.proto" the Optimal Method for Transmitting Dynamic JSON via GRPC?
Using google/protobuf/struct.proto can be an effective method for transmitting dynamic JSON objects through GRPC.
Using google/protobuf/struct
The google/protobuf/struct.proto provides a general-purpose data structure for representing JSON objects in Protobuf messages. It includes two key message types:
- Value - Represents individual JSON values (e.g., string, number, list)
- Struct - Represents a collection of field-value pairs
Dynamic JSON
Dynamic JSON refers to unstructured or flexible data stored as a string. If your data follows a predefined schema, defining a custom Protobuf message type may be more efficient.
Proto File
Your proto file (User.proto) uses google/protobuf/struct.proto to declare a SendJsonRequest message. The Details field is of type Struct, allowing for dynamic JSON data to be passed in.
Client Code
Your client code creates an instance of structpb.Struct using structpb.NewStruct(), which converts a map[string]interface{} to a Struct object.
Alternative Solutions
Anuj's Solution
This solution is more complex and involves manually converting each map entry to a structpb.Value, requiring more code than necessary.
Luke's Solution
While more concise, this solution still involves converting from map to bytes and then to structpb.Struct.
Solution from a Different Approach
The suggested solution uses structpb.NewStruct() directly to create a Struct object from a map, eliminating the need for intermediate conversion.
Conclusion
Using google/protobuf/struct.proto can be a suitable option for transmitting dynamic JSON over GRPC when working with unstructured or flexible data. However, if your data follows a specific schema, defining a custom Protobuf message may offer increased efficiency and type safety.
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