feat: global store for non-prometheus metrics with cidr and named port counters

Signed-off-by: Hunter Gregory <[email protected]>

Author: huntergregory

npm/metrics/counts.go

@@ -0,0 +1,66 @@
+package metrics
+
+import "sync"
+
+var nonPrometheusCounts *counts
+
+// counts is a struct holding non-Prometheus counts.
+type counts struct {
+	sync.Mutex
+	cidrNetPols      int
+	namedPortNetPols int
+}
+
+func IncCidrNetPols() {
+	if nonPrometheusCounts == nil {
+		return
+	}
+	nonPrometheusCounts.Lock()
+	defer nonPrometheusCounts.Unlock()
+	nonPrometheusCounts.cidrNetPols++
+}
+
+func DecCidrNetPols() {
+	if nonPrometheusCounts == nil {
+		return
+	}
+	nonPrometheusCounts.Lock()
+	defer nonPrometheusCounts.Unlock()
+	nonPrometheusCounts.cidrNetPols--
+}
+
+func GetCidrNetPols() int {
+	if nonPrometheusCounts == nil {
+		return 0
+	}
+	nonPrometheusCounts.Lock()
+	defer nonPrometheusCounts.Unlock()
+	return nonPrometheusCounts.cidrNetPols
+}
+
+func IncNamedPortNetPols() {
+	if nonPrometheusCounts == nil {
+		return
+	}
+	nonPrometheusCounts.Lock()
+	defer nonPrometheusCounts.Unlock()
+	nonPrometheusCounts.namedPortNetPols++
+}
+
+func DecNamedPortNetPols() {
+	if nonPrometheusCounts == nil {
+		return
+	}
+	nonPrometheusCounts.Lock()
+	defer nonPrometheusCounts.Unlock()
+	nonPrometheusCounts.namedPortNetPols--
+}
+
+func GetNamedPortNetPols() int {
+	if nonPrometheusCounts == nil {
+		return 0
+	}
+	nonPrometheusCounts.Lock()
+	defer nonPrometheusCounts.Unlock()
+	return nonPrometheusCounts.namedPortNetPols
+}

npm/metrics/prometheus-metrics.go

@@ -162,6 +162,9 @@ func InitializeAll() {
 		return
 	}
 
+	// initialize global variable (see counts.go)
+	nonPrometheusCounts = &counts{}
+
 	initializeDaemonMetrics()
 	initializeControllerMetrics()