This is a GoLang coding exercise: Build a middleware, which checks for the http header key “test” equals value “yes” and then log “header is fine” to console.

main.go

package main

import (
	"fmt"

	"github.com/gin-gonic/gin"
)

func middleware() gin.HandlerFunc {
	return func(c *gin.Context) {
		header := c.Request.Header.Get("test")

		if header == "yes" {
			fmt.Println("header is fine")

		}
		c.Next()
	}
}
func index(c *gin.Context) {
	c.String(200, "hello-world")
}
func main() {
	r := gin.Default()
	r.Use(middleware())
	r.GET("/", index)
	fmt.Println("Server starting ...")
	r.Run()

}