backend-{plugin,app}-api: add UserInfoService + initial implementation

Co-authored-by: Fredrik Adelöw <freben@gmail.com>
Co-authored-by: Carl-Erik Bergström <cbergstrom@spotify.com>
Co-authored-by: blam <ben@blam.sh>
Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

packages/backend-plugin-api/api-report.md

@@ -121,6 +121,14 @@ export type BackstageUserCredentials = {
   userEntityRef: string;
 };
 
+// @public (undocumented)
+export interface BackstageUserInfo {
+  // (undocumented)
+  ownershipEntityRefs: string[];
+  // (undocumented)
+  userEntityRef: string;
+}
+
 // @public
 export interface CacheService {
   delete(key: string): Promise<void>;
@@ -146,6 +154,7 @@ export type CacheServiceSetOptions = {
 // @public
 export namespace coreServices {
   const auth: ServiceRef<AuthService, 'plugin'>;
+  const userInfo: ServiceRef<UserInfoService, 'plugin'>;
   const cache: ServiceRef<CacheService, 'plugin'>;
   const rootConfig: ServiceRef<RootConfigService, 'root'>;
   const database: ServiceRef<DatabaseService, 'plugin'>;
@@ -524,4 +533,12 @@ export interface UrlReaderService {
   readUrl(url: string, options?: ReadUrlOptions): Promise<ReadUrlResponse>;
   search(url: string, options?: SearchOptions): Promise<SearchResponse>;
 }
+
+// @public (undocumented)
+export interface UserInfoService {
+  // (undocumented)
+  getUserInfo(
+    credentials: BackstageUserCredentials,
+  ): Promise<BackstageUserInfo>;
+}
 ```

packages/backend-plugin-api/src/services/definitions/UserInfoService.ts

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2024 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { BackstageUserCredentials } from './AuthService';
+
+/** @public */
+export interface BackstageUserInfo {
+  userEntityRef: string;
+  ownershipEntityRefs: string[];
+}
+
+/** @public */
+export interface UserInfoService {
+  getUserInfo(
+    credentials: BackstageUserCredentials,
+  ): Promise<BackstageUserInfo>;
+}

packages/backend-plugin-api/src/services/definitions/coreServices.ts

@@ -31,6 +31,17 @@ export namespace coreServices {
     id: 'core.auth',
   });
 
+  /**
+   * The service reference for the plugin scoped {@link UserInfoService}.
+   *
+   * @public
+   */
+  export const userInfo = createServiceRef<
+    import('./UserInfoService').UserInfoService
+  >({
+    id: 'core.userInfo',
+  });
+
   /**
    * The service reference for the plugin scoped {@link CacheService}.
    *

packages/backend-plugin-api/src/services/definitions/index.ts

@@ -62,4 +62,5 @@ export type {
   SearchResponseFile,
   UrlReaderService,
 } from './UrlReaderService';
+export type { BackstageUserInfo, UserInfoService } from './UserInfoService';
 export type { IdentityService } from './IdentityService';