Module protocol 

Length-prefixed JSON-RPC wire types for subprocess communication.

Confium spawns each plugin as a child process. The host writes Request frames to the plugin’s stdin and reads Response frames from its stdout. Every frame is prefixed with a 4-byte big-endian length followed by that many bytes of UTF-8 JSON.

The request envelope is intentionally minimal:

{"method": "<function>", "args": [<value>, ...]}

Responses carry exactly one of result or error:

{"result": [<value>, ...]}            // success
{"error": {"message": "<text>"}}      // failure

Value variants map to/from JSON as documented on value_to_json and value_from_json.

Structs

Request

A request the host sends to the plugin subprocess.

Response

A response the plugin writes back to the host.

ResponseError

Error payload inside a Response.

Functions

value_from_json

Inverse of value_to_json.

value_to_json

Marshal a Value to its JSON wire form.