Prometheus metrics support added.

middleware.go

@@ -75,9 +75,19 @@ func logMiddleware(g *Geziyor, r *Request) {
 	log.Println("Fetching: ", r.URL.String())
 }
 
+// metricsRequestMiddleware sets stats
+func metricsRequestMiddleware(g *Geziyor, r *Request) {
+	g.metrics.requestCount.With("method", r.Method).Add(1)
+}
+
 // parseHTMLMiddleware parses response if response is HTML
 func parseHTMLMiddleware(g *Geziyor, r *Response) {
 	if !g.Opt.ParseHTMLDisabled && r.isHTML() {
 		r.DocHTML, _ = goquery.NewDocumentFromReader(bytes.NewReader(r.Body))
 	}
 }
+
+// metricsResponseMiddleware sets stats
+func metricsResponseMiddleware(g *Geziyor, r *Response) {
+	g.metrics.responseCount.With("method", r.Request.Method).Add(1)
+}