catalog-node: allow multiple providers to be passed to extension point

Co-authored-by: Fredrik Adelöw <freben@gmail.com>
Co-authored-by: Johan Haals <johan.haals@gmail.com>
Co-authored-by: blam <ben@blam.sh>
Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/catalog-backend/src/service/CatalogPlugin.ts

@@ -35,12 +35,16 @@ class CatalogExtensionPointImpl implements CatalogProcessingExtensionPoint {
   #processors = new Array<CatalogProcessor>();
   #entityProviders = new Array<EntityProvider>();
 
-  addProcessor(processor: CatalogProcessor): void {
-    this.#processors.push(processor);
+  addProcessor(
+    ...processors: Array<CatalogProcessor | Array<CatalogProcessor>>
+  ): void {
+    this.#processors.push(...processors.flat());
   }
 
-  addEntityProvider(provider: EntityProvider): void {
-    this.#entityProviders.push(provider);
+  addEntityProvider(
+    ...providers: Array<EntityProvider | Array<EntityProvider>>
+  ): void {
+    this.#entityProviders.push(...providers.flat());
   }
 
   get processors() {

plugins/catalog-node/api-report.md

@@ -13,9 +13,13 @@ import { JsonValue } from '@backstage/types';
 // @alpha (undocumented)
 export interface CatalogProcessingExtensionPoint {
   // (undocumented)
-  addEntityProvider(provider: EntityProvider): void;
+  addEntityProvider(
+    ...providers: Array<EntityProvider | Array<EntityProvider>>
+  ): void;
   // (undocumented)
-  addProcessor(processor: CatalogProcessor): void;
+  addProcessor(
+    ...processors: Array<CatalogProcessor | Array<CatalogProcessor>>
+  ): void;
 }
 
 // @alpha (undocumented)

plugins/catalog-node/src/extensions.ts

@@ -21,8 +21,12 @@ import { CatalogProcessor } from './api/processor';
  * @alpha
  */
 export interface CatalogProcessingExtensionPoint {
-  addProcessor(processor: CatalogProcessor): void;
-  addEntityProvider(provider: EntityProvider): void;
+  addProcessor(
+    ...processors: Array<CatalogProcessor | Array<CatalogProcessor>>
+  ): void;
+  addEntityProvider(
+    ...providers: Array<EntityProvider | Array<EntityProvider>>
+  ): void;
 }
 
 /**