iris

IrisMiddleware shows how you would create a default middleware factory and use it to create an Iris compatible middleware.

// Create our middleware factory with the default settings.
mdlw := middleware.New(middleware.Config{
	Recorder: metrics.NewRecorder(metrics.Config{}),
})

// Create our Iris Application instance.
app := iris.New()

// Add our handler and middleware
h := func(ctx iris.Context) {
	ctx.WriteString("Hello world") // nolint: errcheck
}
app.Get("/", irismiddleware.Handler("", mdlw), h)

// Serve metrics from the default prometheus registry.
log.Printf("serving metrics at: %s", ":8081")
go func() {
	_ = http.ListenAndServe(":8081", promhttp.Handler())
}()

// Serve our handler.
log.Printf("listening at: %s", ":8080")
if err := app.Listen(":8080", iris.WithOptimizations); err != nil {
	log.Panicf("error while serving: %s", err)
}