import (
	"github.com/chenjiandongx/ginprom"
	"github.com/gin-gonic/gin"
	"github.com/prometheus/client_golang/prometheus/promhttp"
)

func main() {
 	r := gin.Default()
	// use prometheus metrics exporter middleware.
	//
	// ginprom.PromMiddleware() expects a ginprom.PromOpts{} poniter.
	// It is used for filtering labels by regex. `nil` will pass every requests.
	//
	// ginprom promethues-labels: 
	//   `status`, `endpoint`, `method`
	//
	// for example:
	// 1). I don't want to record the 404 status request. That's easy for it.
	// ginprom.PromMiddleware(&ginprom.PromOpts{ExcludeRegexStatus: "404"})
	//
	// 2). And I wish to ignore endpoints started with `/prefix`.
	// ginprom.PromMiddleware(&ginprom.PromOpts{ExcludeRegexEndpoint: "^/prefix"})
	r.Use(ginprom.PromMiddleware(nil))

 	// register the `/metrics` route.
	r.GET("/metrics", ginprom.PromHandler(promhttp.Handler()))

 	// your working routes
	r.GET("/", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{"message": "home"})
 	})
}