// Create your router.
let router = Router()
// Create an instance of your handler type that conforms the generated protocol
// defining your service API.
let api = MyServiceAPIImpl()
// Call the generated function on your implementation to add its request
// handlers to the app.
try api.registerHandlers(on: router)
// Create the application and run as you would normally.
let app = Application(router: router)
try await app.runService()

struct RequestContextMiddleware: RouterMiddleware {
    typealias Context = MyRequestContext
    @TaskLocal static var requestContext: Context?
    func handle(_ request: Request, context: Context, next: (Request, Context) async throws -> Response) async throws -> Response {
        try await Self.$requestContext.withValue(context) {
            try await next(request, context)
        }
    }
}