This folder contains the source code for the Player backend-for-frontend (BFF) of SSL Core. It is an application written in Go that provides the data needed by the player-mfe.
graph LR
player-mfe --> player-bff
player-bff --> backend
The Player BFF mediates communication between the microfrontend and the backend. It handles presentation and interaction logic without embedding any business logic.In Domain-driven Design terms, it maps the backend subdomain (robot control and strategy) to the frontend subdomain (user features).
The BFF communicates with the backend through the gateway, using gRPC and with the clients via WebSocket. It maintains a single persistent connection to handle the livestream use case and notify all subscribed WebSocket connections from the player-mfe when a packet is received. Other features follow a flow where a client sends a message in the format { event: string, data: map[string]interface{} }, the BFF sends a request to the gateway, processes the response, and sends it back to the client.
To run the application, use the following commands:
make setup
make run