Application File Logger

func main() {
    app := iris.Default()
    // Logging to a file.
    // Colors are automatically disabled when writing to a file.
    f, _ := os.Create("iris.log")
    app.Logger().SetOutput(f)
    // Use the following code if you need to write the logs
    // to file and console at the same time.
    // app.Logger().AddOutput(os.Stdout)
    app.Get("/ping", func(ctx iris.Context) {
        ctx.WriteString("pong")
    })
   app.Listen(":8080")
}