Improve complexity metrics

Also fixed the dependencies, moved metrics to its own package and
updated the tests

1 files changed, 42 insertions, 0 deletions

diff --git a/metrics/metrics.go b/metrics/metrics.go
new file mode 100644
index 00000000..00e39460
--- /dev/null
+++ b/metrics/metrics.go
@@ -0,0 +1,42 @@
+package metrics
+
+import (
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+var (
+	DomainsServed = prometheus.NewGauge(prometheus.GaugeOpts{
+		Name: "gitlab_pages_domains_served_total",
+		Help: "The total number of sites served by this Pages app",
+	})
+
+	DomainUpdates = prometheus.NewCounter(prometheus.CounterOpts{
+		Name: "gitlab_pages_domains_updated_total",
+		Help: "The total number of site updates processed since daemon start",
+	})
+
+	DomainLastUpdateTime = prometheus.NewGauge(prometheus.GaugeOpts{
+		Name: "gitlab_pages_last_domain_update_seconds",
+		Help: "UNIX timestamp of the last update",
+	})
+
+	ProcessedRequests = prometheus.NewCounterVec(prometheus.CounterOpts{
+		Name: "gitlab_pages_http_requests_total",
+		Help: "Total number of HTTP requests done serving",
+	},
+		[]string{"code", "method"},
+	)
+
+	SessionsActive = prometheus.NewGauge(prometheus.GaugeOpts{
+		Name: "gitlab_pages_http_sessions_active",
+		Help: "The number of HTTP requests currently being processed",
+	})
+)
+
+func init() {
+	prometheus.MustRegister(DomainsServed)
+	prometheus.MustRegister(DomainUpdates)
+	prometheus.MustRegister(DomainLastUpdateTime)
+	prometheus.MustRegister(ProcessedRequests)
+	prometheus.MustRegister(SessionsActive)
+}