Add few more metrics

cmd/consumer/metrics.go

@@ -0,0 +1,21 @@
+package main
+
+import (
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promauto"
+)
+
+var lastEventTimestamp = promauto.NewGaugeVec(prometheus.GaugeOpts{
+	Name: "repo_commit_received_timestamp",
+	Help: "Timestamp of the last event received from firehose.",
+}, []string{"remote"})
+
+var eventCounter = promauto.NewCounterVec(prometheus.CounterOpts{
+	Name: "repo_commits_received_counter",
+	Help: "Counter of events received from each remote.",
+}, []string{"remote", "type"})
+
+var reposDiscovered = promauto.NewCounterVec(prometheus.CounterOpts{
+	Name: "repo_discovered_counter",
+	Help: "Counter of newly discovered repos",
+}, []string{"remote"})