[feat] add prometheus instrumentation

1 files changed, 23 insertions, 0 deletions

diff --git a/pkg/metrics/metrics.go b/pkg/metrics/metrics.go
new file mode 100644
index 0000000..8b4bdbb
--- /dev/null
+++ b/pkg/metrics/metrics.go
@@ -0,0 +1,23 @@
+package metrics
+
+import (
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promauto"
+)
+
+var (
+	FailedLogins = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "vpnweb_failed_logins_total",
+		Help: "The total number of failed logins",
+	})
+
+	SuccessfulLogins = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "vpnweb_successful_logins_total",
+		Help: "The total number of processed events",
+	})
+
+	DownloadedCerts = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "vpnweb_downloaded_certs_total",
+		Help: "The total number of downloaded certs",
+	})
+)