Add support to read lincence from secret

This commit add support to take licence from a kubernetes secret.
A kubernetes secret can be created, which can be passed through helm chart.
Previous flag is still present to provide backward comptability.

Signed-off-by: Vivek Singh <vivekkmr45@yahoo.in>

Author: viveksyngh

chart/inlets-operator/templates/deployment.yaml

@@ -58,6 +58,13 @@ spec:
         env:
         - name: client_image
           value: "{{.Values.clientImage}}"
+        {{- if and .Values.proLicenseSecret.name .Values.proLicenseSecret.key }}
+        - name: LICENSE
+          valueFrom:
+            secretKeyRef:
+              name: {{  .Values.proLicenseSecret.name }}
+              key: {{  .Values.proLicenseSecret.key }}
+        {{- end }}
         volumeMounts:
         - mountPath: /var/secrets/inlets/
           name: inlets-access-key

chart/inlets-operator/values.yaml

@@ -35,6 +35,10 @@ vpcId: ""
 subnetId: ""
 
 # Only provide LoadBalancers for Services annotated with "dev.inlets.manage=true"
+proLicenseSecret:
+  name: ""
+  key: ""
+
 annotatedOnly: false
 
 image: "ghcr.io/inlets/inlets-operator:0.14.1"

main.go

@@ -74,13 +74,18 @@ func main() {
 
 	infra.InletsClientImage = os.Getenv("client_image")
 
-	log.Printf("Client image: %s\n", infra.GetInletsClientImage())
+	if len(infra.ProConfig.License) == 0 {
+		infra.ProConfig.License = os.Getenv("LICENSE")
+	}
 
 	if _, err := infra.ProConfig.GetLicenseKey(); err != nil {
 		fmt.Fprintf(os.Stderr, "%s\n", err.Error())
 		os.Exit(1)
 	}
 
+	log.Printf("Inlets client: %s\n", infra.GetInletsClientImage())
+	log.Printf("Inlets pro: %v\n", infra.UsePro())
+
 	// set up signals so we handle the first shutdown signal gracefully
 	stopCh := signals.SetupSignalHandler()