Is `google.protobuf.Struct` the Most Efficient Way to Send Dynamic JSON Data via gRPC in Go?

Is "google/protobuf/struct.proto" the Optimal Method for Transmitting Dynamic JSON via GRPC?

Background:

You've implemented a GRPC server and client (both in Go) and are seeking guidance on whether employing "golang/protobuf/struct" is the most efficient strategy for delivering dynamic JSON data.

Solution:

Based on the provided "User.proto" file, utilizing "google.protobuf.Struct" appears to be a sound approach.

Alternative Solutions:

1. Custom Protobuf Structs**

Defining "Details" as a struct within the proto file has been suggested, but this approach requires additional code generation and maintenance, which can be cumbersome.

2. JSON Conversion and Encapsulation

Prior to GRPC transmission, converting the "Details" map to JSON format, encapsulating it as a protobuf message, and deserializing it on the server side was another option. However, this involves additional processing and is less efficient than using the prebuilt "Struct" type.

Anuj's Solution:

While functional, this solution is somewhat complex and includes manual JSON serialization and deserialization.

Luke's Solution:

This alternative is succinct yet still entails more transformations than necessary, transitioning map data through multiple formats.

Optimal Approach:

The solution leveraging the "structpb" package introduced in Go simplifies the creation of protobuf "Struct" instances from standard Go maps. This method provides the following benefits:

• Simplified interface for constructing "Struct" instances.
• Built-in support for mapping various Go data types to "Value" types in the "Struct."
• Efficient processing and avoidance of redundant conversions.

This approach aligns with the example provided in your client.go file, where a "Struct" is instantiated directly from a map using the "structpb.NewStruct" function.

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