Allow configuring Custom Resources per cluster

Co-authored-by: Jamie Klassen <jklassen@vmware.com>
Signed-off-by: Andres Mauricio Gomez P <andmagom@outlook.com>

plugins/kubernetes-backend/src/service/KubernetesFanOutHandler.ts

@@ -211,19 +211,14 @@ export class KubernetesFanOutHandler {
     entity,
     auth,
   }: KubernetesObjectsByEntity): Promise<ObjectsByEntityResponse> {
-    return this.fanOutRequests(
-      entity,
-      auth,
-      this.objectTypesToFetch,
-      this.customResources,
-    );
+    return this.fanOutRequests(entity, auth, this.objectTypesToFetch);
   }
 
   private async fanOutRequests(
     entity: Entity,
     auth: KubernetesRequestAuth,
     objectTypesToFetch: Set<ObjectToFetch>,
-    customResources: CustomResourceMatcher[],
+    customResources?: CustomResourceMatcher[],
   ) {
     const entityName =
       entity.metadata?.annotations?.['backstage.io/kubernetes-id'] ||
@@ -254,7 +249,11 @@ export class KubernetesFanOutHandler {
             clusterDetails: clusterDetailsItem,
             objectTypesToFetch: objectTypesToFetch,
             labelSelector,
-            customResources: customResources.map(c => ({
+            customResources: (
+              customResources ||
+              clusterDetailsItem.customResources ||
+              this.customResources
+            ).map(c => ({
               ...c,
               objectType: 'customresources',
             })),

plugins/kubernetes-backend/src/types/types.ts

@@ -193,6 +193,11 @@ export interface ClusterDetails {
    * @see dashboardApp
    */
   dashboardParameters?: JsonObject;
+  /**
+   * Specifies which custom resources to look for when returning an entity's
+   * Kubernetes resources.
+   */
+  customResources?: CustomResourceMatcher[];
 }
 
 /**