feat: Add exclusive mode

README.md

@@ -28,6 +28,9 @@ __Service__
 `k8status.stenic.io/exclude`
 (bool) Exclude from the report.
 
+`k8status.stenic.io/include`
+(bool) Include in the report. Only used if `--mode=exclusive` is set.
+
 `k8status.stenic.io/description`
 (string) Add additional description to the service.
 

charts/k8status/templates/deployment.yaml

@@ -39,6 +39,7 @@ spec:
             {{ if .Values.k8status.allNamspaces }}"--namespace", "{{ .Release.Namespace }}",{{ end }}
             "--prefix", "{{ .Values.k8status.prefix }}",
             "--interval", "{{ .Values.k8status.interval }}",
+            "--mode", "{{ .Values.k8status.mode }}",
           ]
           ports:
             - name: http

charts/k8status/values.yaml

@@ -21,6 +21,8 @@ k8status:
   prefix: /
   # k8status.interval -- Poll interval for readiness checks
   interval: 10
+  # k8status.mode -- Inclusive or exclusive mode
+  mode: "inclusive"
 
 # imagePullSecrets -- Docker registry secret names as an array
 imagePullSecrets: []

server/main.go

@@ -34,6 +34,7 @@ var prefix string
 var svcReps []SvcRep
 var interval int
 var showDegraded bool
+var mode string
 
 var nsNameCache = map[string]string{}
 var (
@@ -59,6 +60,7 @@ func init() {
 	}
 	flag.StringVar(&namespace, "namespace", "", "namespace")
 	flag.StringVar(&prefix, "prefix", "/", "path prefix")
+	flag.StringVar(&mode, "mode", "inclusive", "mode: inclusive or exclusive")
 	flag.IntVar(&interval, "interval", 5, "readiness poll interval")
 	flag.BoolVar(&showDegraded, "show-degraded", false, "indicate degraded service")
 }
@@ -181,6 +183,11 @@ func loadServiceInfo(clientset *kubernetes.Clientset, ns string) []SvcRep {
 		if val, ok := svc.Annotations["k8status.stenic.io/exclude"]; ok && val == "true" {
 			continue
 		}
+		if mode == "exclusive" {
+			if val, ok := svc.Annotations["k8status.stenic.io/include"]; ok && val != "true" {
+				continue
+			}
+		}
 		pods, err := clientset.CoreV1().Pods(svc.Namespace).List(ctx, v1.ListOptions{
 			LabelSelector: labels.SelectorFromSet(svc.Spec.Selector).String(),
 		})