Custom Middleware

func Logger() iris.Handler {
    return func(ctx iris.Context) {
        t := time.Now()

        // Set a shared variable between handlers
        ctx.Values().Set("framework", "iris")

        // before request

        ctx.Next()

        // after request
        latency := time.Since(t)
        log.Print(latency)

        // access the status we are sending
        status := ctx.GetStatusCode()
        log.Println(status)
    }
}

func main() {
    app := iris.New()
    app.Use(Logger())

    app.Get("/test", func(ctx iris.Context) {
        // retrieve a value set by the middleware.
        framework := ctx.Values().GetString("framework")

        // it would print: "iris"
        log.Println(framework)
    })

    app.Listen(":8080")
}