rename to TaskScheduler to reduce collision risk with other concepts

Signed-off-by: Fredrik Adelöw <freben@gmail.com>

packages/backend-tasks/README.md

@@ -1,6 +1,6 @@
 # @backstage/backend-tasks
 
-Common distributed task management / locking library for Backstage backends.
+Common distributed task management for Backstage backends.
 
 ## Usage
 
@@ -15,12 +15,12 @@ yarn add @backstage/backend-tasks
 then make use of its facilities as necessary:
 
 ```typescript
-import { TaskManager } from '@backstage/backend-tasks';
+import { TaskScheduler } from '@backstage/backend-tasks';
 import { Duration } from 'luxon';
 
-const manager = TaskManager.fromConfig(rootConfig).forPlugin('my-plugin');
+const scheduler = TaskScheduler.fromConfig(rootConfig).forPlugin('my-plugin');
 
-await manager.scheduleTask({
+await scheduler.scheduleTask({
   id: 'refresh-things',
   frequency: Duration.fromObject({ minutes: 10 }),
   fn: async () => {

packages/backend-tasks/api-report.md

@@ -10,7 +10,7 @@ import { Duration } from 'luxon';
 import { Logger as Logger_2 } from 'winston';
 
 // @public
-export interface PluginTaskManager {
+export interface PluginTaskScheduler {
   scheduleTask(task: TaskDefinition): Promise<void>;
 }
 
@@ -30,9 +30,10 @@ export type TaskFunction =
   | (() => void | Promise<void>);
 
 // @public
-export class TaskManager {
+export class TaskScheduler {
   constructor(databaseManager: DatabaseManager, logger: Logger_2);
-  forPlugin(pluginId: string): PluginTaskManager;
+  // Warning: (ae-unresolved-link) The @link reference could not be resolved: The package "@backstage/backend-tasks" does not have an export "PluginTaskManager"
+  forPlugin(pluginId: string): PluginTaskScheduler;
   // (undocumented)
   static fromConfig(
     config: Config,
@@ -40,6 +41,6 @@ export class TaskManager {
       databaseManager?: DatabaseManager;
       logger?: Logger_2;
     },
-  ): TaskManager;
+  ): TaskScheduler;
 }
 ```

packages/backend-tasks/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@backstage/backend-tasks",
-  "description": "Common distributed task management / locking library for Backstage backends",
+  "description": "Common distributed task management library for Backstage backends",
   "version": "0.1.0",
   "main": "src/index.ts",
   "types": "src/index.ts",

packages/backend-tasks/src/index.ts

@@ -15,7 +15,7 @@
  */
 
 /**
- * Common distributed task management / locking library for Backstage backends
+ * Common distributed task management library for Backstage backends
  *
  * @packageDocumentation
  */

packages/backend-tasks/src/tasks/PluginTaskSchedulerImpl.test.ts

@@ -19,7 +19,7 @@ import { TestDatabaseId, TestDatabases } from '@backstage/backend-test-utils';
 import { Duration } from 'luxon';
 import waitForExpect from 'wait-for-expect';
 import { migrateBackendTasks } from '../database/migrateBackendTasks';
-import { PluginTaskManagerImpl } from './PluginTaskManagerImpl';
+import { PluginTaskSchedulerImpl } from './PluginTaskSchedulerImpl';
 
 describe('PluginTaskManagerImpl', () => {
   const databases = TestDatabases.create({
@@ -29,7 +29,7 @@ describe('PluginTaskManagerImpl', () => {
   async function init(databaseId: TestDatabaseId) {
     const knex = await databases.init(databaseId);
     await migrateBackendTasks(knex);
-    const manager = new PluginTaskManagerImpl(
+    const manager = new PluginTaskSchedulerImpl(
       async () => knex,
       getVoidLogger(),
     );

packages/backend-tasks/src/tasks/PluginTaskSchedulerImpl.ts

@@ -17,13 +17,13 @@
 import { Knex } from 'knex';
 import { Logger } from 'winston';
 import { TaskWorker } from './TaskWorker';
-import { PluginTaskManager, TaskDefinition } from './types';
+import { PluginTaskScheduler, TaskDefinition } from './types';
 import { validateId } from './util';
 
 /**
  * Implements the actual task management.
  */
-export class PluginTaskManagerImpl implements PluginTaskManager {
+export class PluginTaskSchedulerImpl implements PluginTaskScheduler {
   constructor(
     private readonly databaseFactory: () => Promise<Knex>,
     private readonly logger: Logger,

packages/backend-tasks/src/tasks/PluginTaskSchedulerJanitor.ts

@@ -25,7 +25,7 @@ import { sleep } from './util';
  * Makes sure to auto-expire and clean up things that time out or for other
  * reasons should not be left lingering.
  */
-export class PluginTaskManagerJanitor {
+export class PluginTaskSchedulerJanitor {
   private readonly knex: Knex;
   private readonly waitBetweenRuns: Duration;
   private readonly logger: Logger;

packages/backend-tasks/src/tasks/TaskScheduler.test.ts

@@ -17,10 +17,10 @@
 import { DatabaseManager, getVoidLogger } from '@backstage/backend-common';
 import { TestDatabaseId, TestDatabases } from '@backstage/backend-test-utils';
 import { Duration } from 'luxon';
-import { TaskManager } from './TaskManager';
+import { TaskScheduler } from './TaskScheduler';
 import waitForExpect from 'wait-for-expect';
 
-describe('TaskManager', () => {
+describe('TaskScheduler', () => {
   const logger = getVoidLogger();
   const databases = TestDatabases.create({
     ids: ['POSTGRES_13', 'POSTGRES_9', 'SQLITE_3'],
@@ -42,7 +42,7 @@ describe('TaskManager', () => {
     'can return a working plugin impl, %p',
     async databaseId => {
       const database = await createDatabase(databaseId);
-      const manager = new TaskManager(database, logger).forPlugin('test');
+      const manager = new TaskScheduler(database, logger).forPlugin('test');
       const fn = jest.fn();
 
       await manager.scheduleTask({

packages/backend-tasks/src/tasks/TaskScheduler.ts

@@ -20,29 +20,29 @@ import { memoize } from 'lodash';
 import { Duration } from 'luxon';
 import { Logger } from 'winston';
 import { migrateBackendTasks } from '../database/migrateBackendTasks';
-import { PluginTaskManagerImpl } from './PluginTaskManagerImpl';
-import { PluginTaskManagerJanitor } from './PluginTaskManagerJanitor';
-import { PluginTaskManager } from './types';
+import { PluginTaskSchedulerImpl } from './PluginTaskSchedulerImpl';
+import { PluginTaskSchedulerJanitor } from './PluginTaskSchedulerJanitor';
+import { PluginTaskScheduler } from './types';
 
 /**
- * Deals with management and locking related to distributed tasks.
+ * Deals with the scheduling of distributed tasks.
  *
  * @public
  */
-export class TaskManager {
+export class TaskScheduler {
   static fromConfig(
     config: Config,
     options?: {
       databaseManager?: DatabaseManager;
       logger?: Logger;
     },
-  ): TaskManager {
+  ): TaskScheduler {
     const databaseManager =
       options?.databaseManager ?? DatabaseManager.fromConfig(config);
     const logger = (options?.logger || getRootLogger()).child({
       type: 'taskManager',
     });
-    return new TaskManager(databaseManager, logger);
+    return new TaskScheduler(databaseManager, logger);
   }
 
   constructor(
@@ -56,13 +56,13 @@ export class TaskManager {
    * @param pluginId - The unique ID of the plugin, for example "catalog"
    * @returns A {@link PluginTaskManager} instance
    */
-  forPlugin(pluginId: string): PluginTaskManager {
+  forPlugin(pluginId: string): PluginTaskScheduler {
     const databaseFactory = memoize(async () => {
       const knex = await this.databaseManager.forPlugin(pluginId).getClient();
 
       await migrateBackendTasks(knex);
 
-      const janitor = new PluginTaskManagerJanitor({
+      const janitor = new PluginTaskSchedulerJanitor({
         knex,
         waitBetweenRuns: Duration.fromObject({ minutes: 1 }),
         logger: this.logger,
@@ -72,7 +72,7 @@ export class TaskManager {
       return knex;
     });
 
-    return new PluginTaskManagerImpl(
+    return new PluginTaskSchedulerImpl(
       databaseFactory,
       this.logger.child({ plugin: pluginId }),
     );

packages/backend-tasks/src/tasks/index.ts

@@ -14,5 +14,9 @@
  * limitations under the License.
  */
 
-export { TaskManager } from './TaskManager';
-export type { PluginTaskManager, TaskDefinition, TaskFunction } from './types';
+export { TaskScheduler } from './TaskScheduler';
+export type {
+  PluginTaskScheduler,
+  TaskDefinition,
+  TaskFunction,
+} from './types';

packages/backend-tasks/src/tasks/types.ts

@@ -92,12 +92,11 @@ export interface TaskDefinition {
 }
 
 /**
- * Deals with management and locking related to distributed tasks, for a given
- * plugin.
+ * Deals with the scheduling of distributed tasks, for a given plugin.
  *
  * @public
  */
-export interface PluginTaskManager {
+export interface PluginTaskScheduler {
   /**
    * Schedules a task function for coordinated exclusive invocation across
    * workers.