feat: inc generic metric if error occurs #161

utils/http.go

@@ -6,6 +6,9 @@ import (
 	"me-fit/types"
 	"net/http"
 	"time"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promauto"
 )
 
 type ContextKey string
@@ -14,6 +17,24 @@ const (
 	ContextKeyUser ContextKey = "user_id"
 )
 
+var (
+	errorMetric = promauto.NewCounter(
+		prometheus.CounterOpts{
+			Name: "mefit_error_total",
+			Help: "The total number of errors during processing",
+		},
+	)
+)
+
+func LogError(message string, err error) {
+	slog.Error(message + ": " + err.Error())
+	errorMetric.Inc()
+}
+func LogErrorMsg(message string) {
+	slog.Error(message)
+	errorMetric.Inc()
+}
+
 func DoRedirect(w http.ResponseWriter, r *http.Request, url string) {
 	isHtmx := r.Header.Get("HX-Request") == "true"
 	if isHtmx {