feat: expose prometheus metrics on different port

internal/server/prometheus.go

@@ -0,0 +1,14 @@
+package server
+
+import (
+	"net/http"
+
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+)
+
+func StartPrometheusServer() {
+	go func() {
+		http.HandleFunc("/", promhttp.Handler().ServeHTTP)
+		http.ListenAndServe(":8889", nil)
+	}()
+}

internal/server/router.go

@@ -11,7 +11,6 @@ import (
 	"github.com/go-chi/chi/v5/middleware"
 	"github.com/go-chi/cors"
 	"github.com/go-chi/httprate"
-	"github.com/prometheus/client_golang/prometheus/promhttp"
 
 	"api/internal/handler"
 	app_middleware "api/internal/middleware"
@@ -49,9 +48,6 @@ func NewRouter() {
 	r.Group(func(r chi.Router) {
 		r.Use(app_middleware.PrometheusMiddleware)
 
-		// Prometheus
-		r.Handle("/metrics", promhttp.Handler())
-
 		var commit = "unknown"
 		if os.Getenv("SOURCE_COMMIT") != "" {
 			commit = os.Getenv("SOURCE_COMMIT")[:7] // shorten to 7 characters