Added function to get the csm namespaces from the cluster. (#581)

* function to get the csm namespaces from the cluster

* change the function to unexported type for time being

* refactor variablename and error message

* refactor variablename and error message

* fix yaml lint

operatorconfig/clientconfig/apexconnectivityclient/v1.0.0/brownfield-onboard.yaml

@@ -0,0 +1,32 @@
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: connectivity-client-docker-k8s
+  namespace: <ExistingNameSpace>
+rules:
+  - apiGroups: [""]
+    resources: ["secrets"]
+    verbs: ["list","get", "create", "update", "delete","watch"]
+  - apiGroups: ["storage.dell.com"]
+    resources: ["containerstoragemodules"]
+    verbs: ["create", "delete"]
+  - apiGroups: [""]
+    resources: ["configmaps"]
+    verbs: ["get", "create", "delete", "update"]
+  - apiGroups: ["mobility.storage.dell.com"]
+    resources: ["backups"]
+    verbs: ["create"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: connectivity-client-docker-k8s
+  namespace: <ExistingNameSpace>
+subjects:
+  - kind: ServiceAccount
+    name: connectivity-client-docker-k8s
+    namespace: <ClientNameSpace>
+roleRef:
+  kind: Role
+  name: connectivity-client-docker-k8s
+  apiGroup: rbac.authorization.k8s.io

pkg/utils/utils.go

@@ -1175,3 +1175,25 @@ func getUpgradeInfo[T csmv1.CSMComponentType](ctx context.Context, operatorConfi
 	// Example return value: "v2.2.0"
 	return upgradePath.MinUpgradePath, nil
 }
+
+func getNamespaces(ctx context.Context, ctrlClient crclient.Client) ([]string, error) {
+	// Set to store unique namespaces
+	namespaceMap := make(map[string]struct{})
+
+	csmList := &csmv1.ContainerStorageModuleList{}
+
+	if err := ctrlClient.List(ctx, csmList); err != nil {
+		return nil, fmt.Errorf("error listing csm resources: %w", err)
+	}
+	for _, csmResource := range csmList.Items {
+		namespaceMap[csmResource.Namespace] = struct{}{}
+	}
+
+	// Convert set to slice
+	var namespaces []string
+	for namespace := range namespaceMap {
+		namespaces = append(namespaces, namespace)
+	}
+
+	return namespaces, nil
+}