Monitoring is an internal package

internal/monitoring/monitoring.go

@@ -0,0 +1,27 @@
+package monitoring
+
+import (
+	"log"
+	"net/http"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promauto"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+	"gitlab.crans.org/nounous/ghostream/internal/config"
+)
+
+var (
+	// ViewerServed is the total amount of viewer page served
+	ViewerServed = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "ghostream_viewer_served_total",
+		Help: "The total amount of viewer served",
+	})
+)
+
+// ServeHTTP server that expose prometheus metrics
+func ServeHTTP(cfg *config.Config) {
+	mux := http.NewServeMux()
+	mux.Handle("/metrics", promhttp.Handler())
+	log.Printf("Monitoring listening on http://%s/", cfg.Prometheus.ListenAddress)
+	log.Fatal(http.ListenAndServe(cfg.Prometheus.ListenAddress, mux))
+}