refactor(server): filter on-event handlers by worker (immich-app#14085)

server/src/decorators.ts

@@ -2,7 +2,7 @@ import { SetMetadata, applyDecorators } from '@nestjs/common';
 import { ApiExtension, ApiOperation, ApiProperty, ApiTags } from '@nestjs/swagger';
 import _ from 'lodash';
 import { ADDED_IN_PREFIX, DEPRECATED_IN_PREFIX, LIFECYCLE_EXTENSION } from 'src/constants';
-import { MetadataKey } from 'src/enum';
+import { ImmichWorker, MetadataKey } from 'src/enum';
 import { EmitEvent } from 'src/interfaces/event.interface';
 import { JobName, QueueName } from 'src/interfaces/job.interface';
 import { setUnion } from 'src/utils/set';
@@ -120,6 +120,8 @@ export type EventConfig = {
   server?: boolean;
   /** lower value has higher priority, defaults to 0 */
   priority?: number;
+  /** register events for these workers, defaults to all workers */
+  workers?: ImmichWorker[];
 };
 export const OnEvent = (config: EventConfig) => SetMetadata(MetadataKey.EVENT_CONFIG, config);
 

server/src/repositories/event.repository.ts

@@ -11,7 +11,8 @@ import { ClassConstructor } from 'class-transformer';
 import _ from 'lodash';
 import { Server, Socket } from 'socket.io';
 import { EventConfig } from 'src/decorators';
-import { MetadataKey } from 'src/enum';
+import { ImmichWorker, MetadataKey } from 'src/enum';
+import { IConfigRepository } from 'src/interfaces/config.interface';
 import {
   ArgsOf,
   ClientEventMap,
@@ -23,6 +24,7 @@ import {
   ServerEvents,
 } from 'src/interfaces/event.interface';
 import { ILoggerRepository } from 'src/interfaces/logger.interface';
+import { ConfigRepository } from 'src/repositories/config.repository';
 import { AuthService } from 'src/services/auth.service';
 import { handlePromiseError } from 'src/utils/misc';
 
@@ -50,6 +52,7 @@ export class EventRepository implements OnGatewayConnection, OnGatewayDisconnect
 
   constructor(
     private moduleRef: ModuleRef,
+    @Inject(IConfigRepository) private configRepository: ConfigRepository,
     @Inject(ILoggerRepository) private logger: ILoggerRepository,
   ) {
     this.logger.setContext(EventRepository.name);
@@ -58,6 +61,10 @@ export class EventRepository implements OnGatewayConnection, OnGatewayDisconnect
   setup({ services }: { services: ClassConstructor<unknown>[] }) {
     const reflector = this.moduleRef.get(Reflector, { strict: false });
     const items: Item<EmitEvent>[] = [];
+    const worker = this.configRepository.getWorker();
+    if (!worker) {
+      throw new Error('Unable to determine worker type');
+    }
 
     // discovery
     for (const Service of services) {
@@ -79,6 +86,11 @@ export class EventRepository implements OnGatewayConnection, OnGatewayDisconnect
           continue;
         }
 
+        const workers = event.workers ?? Object.values(ImmichWorker);
+        if (!workers.includes(worker)) {
+          continue;
+        }
+
         items.push({
           event: event.name,
           priority: event.priority || 0,
@@ -133,7 +145,7 @@ export class EventRepository implements OnGatewayConnection, OnGatewayDisconnect
     await client.leave(client.nsp.name);
   }
 
-  private addHandler<T extends EmitEvent>(item: EventItem<T>): void {
+  private addHandler<T extends EmitEvent>(item: Item<T>): void {
     const event = item.event;
 
     if (!this.emitHandlers[event]) {

server/src/services/backup.service.ts

@@ -14,16 +14,12 @@ import { handlePromiseError } from 'src/utils/misc';
 export class BackupService extends BaseService {
   private backupLock = false;
 
-  @OnEvent({ name: 'config.init' })
+  @OnEvent({ name: 'config.init', workers: [ImmichWorker.MICROSERVICES] })
   async onConfigInit({
     newConfig: {
       backup: { database },
     },
   }: ArgOf<'config.init'>) {
-    if (this.worker !== ImmichWorker.API) {
-      return;
-    }
-
     this.backupLock = await this.databaseRepository.tryLock(DatabaseLock.BackupDatabase);
 
     if (this.backupLock) {

server/src/services/job.service.ts

@@ -38,12 +38,8 @@ const asJobItem = (dto: JobCreateDto): JobItem => {
 
 @Injectable()
 export class JobService extends BaseService {
-  @OnEvent({ name: 'config.init' })
+  @OnEvent({ name: 'config.init', workers: [ImmichWorker.MICROSERVICES] })
   onConfigInit({ newConfig: config }: ArgOf<'config.init'>) {
-    if (this.worker !== ImmichWorker.MICROSERVICES) {
-      return;
-    }
-
     this.logger.debug(`Updating queue concurrency settings`);
     for (const queueName of Object.values(QueueName)) {
       let concurrency = 1;

server/src/services/library.service.spec.ts

@@ -122,13 +122,6 @@ describe(LibraryService.name, () => {
 
       expect(cronMock.create).not.toHaveBeenCalled();
     });
-
-    it('should not initialize watcher or library scan job when running on api', async () => {
-      configMock.getWorker.mockReturnValue(ImmichWorker.API);
-      await sut.onConfigInit({ newConfig: systemConfigStub.libraryScan as SystemConfig });
-
-      expect(cronMock.create).not.toHaveBeenCalled();
-    });
   });
 
   describe('onConfigUpdateEvent', () => {

server/src/services/library.service.ts

@@ -31,16 +31,12 @@ export class LibraryService extends BaseService {
   private lock = false;
   private watchers: Record<string, () => Promise<void>> = {};
 
-  @OnEvent({ name: 'config.init' })
+  @OnEvent({ name: 'config.init', workers: [ImmichWorker.MICROSERVICES] })
   async onConfigInit({
     newConfig: {
       library: { watch, scan },
     },
   }: ArgOf<'config.init'>) {
-    if (this.worker !== ImmichWorker.MICROSERVICES) {
-      return;
-    }
-
     // This ensures that library watching only occurs in one microservice
     this.lock = await this.databaseRepository.tryLock(DatabaseLock.Library);
 

server/src/services/metadata.service.spec.ts

@@ -94,15 +94,6 @@ describe(MetadataService.name, () => {
       expect(mapMock.init).toHaveBeenCalledTimes(1);
       expect(jobMock.resume).toHaveBeenCalledTimes(1);
     });
-
-    it('should return if running on api', async () => {
-      configMock.getWorker.mockReturnValue(ImmichWorker.API);
-      await sut.onBootstrap();
-
-      expect(jobMock.pause).not.toHaveBeenCalled();
-      expect(mapMock.init).not.toHaveBeenCalled();
-      expect(jobMock.resume).not.toHaveBeenCalled();
-    });
   });
 
   describe('handleLivePhotoLinking', () => {

server/src/services/metadata.service.ts

@@ -68,11 +68,8 @@ const validateRange = (value: number | undefined, min: number, max: number): Non
 
 @Injectable()
 export class MetadataService extends BaseService {
-  @OnEvent({ name: 'app.bootstrap' })
+  @OnEvent({ name: 'app.bootstrap', workers: [ImmichWorker.MICROSERVICES] })
   async onBootstrap() {
-    if (this.worker !== ImmichWorker.MICROSERVICES) {
-      return;
-    }
     this.logger.log('Bootstrapping metadata service');
     await this.init();
   }

server/src/services/smart-info.service.spec.ts

@@ -67,19 +67,6 @@ describe(SmartInfoService.name, () => {
   });
 
   describe('onConfigInit', () => {
-    it('should return if not microservices', async () => {
-      configMock.getWorker.mockReturnValue(ImmichWorker.API);
-      await sut.onConfigInit({ newConfig: systemConfigStub.machineLearningEnabled as SystemConfig });
-
-      expect(searchMock.getDimensionSize).not.toHaveBeenCalled();
-      expect(searchMock.setDimensionSize).not.toHaveBeenCalled();
-      expect(searchMock.deleteAllSearchEmbeddings).not.toHaveBeenCalled();
-      expect(jobMock.getQueueStatus).not.toHaveBeenCalled();
-      expect(jobMock.pause).not.toHaveBeenCalled();
-      expect(jobMock.waitForQueueCompletion).not.toHaveBeenCalled();
-      expect(jobMock.resume).not.toHaveBeenCalled();
-    });
-
     it('should return if machine learning is disabled', async () => {
       await sut.onConfigInit({ newConfig: systemConfigStub.machineLearningDisabled as SystemConfig });
 
@@ -136,22 +123,6 @@ describe(SmartInfoService.name, () => {
   });
 
   describe('onConfigUpdateEvent', () => {
-    it('should return if not microservices', async () => {
-      configMock.getWorker.mockReturnValue(ImmichWorker.API);
-      await sut.onConfigUpdate({
-        newConfig: systemConfigStub.machineLearningEnabled as SystemConfig,
-        oldConfig: systemConfigStub.machineLearningEnabled as SystemConfig,
-      });
-
-      expect(searchMock.getDimensionSize).not.toHaveBeenCalled();
-      expect(searchMock.setDimensionSize).not.toHaveBeenCalled();
-      expect(searchMock.deleteAllSearchEmbeddings).not.toHaveBeenCalled();
-      expect(jobMock.getQueueStatus).not.toHaveBeenCalled();
-      expect(jobMock.pause).not.toHaveBeenCalled();
-      expect(jobMock.waitForQueueCompletion).not.toHaveBeenCalled();
-      expect(jobMock.resume).not.toHaveBeenCalled();
-    });
-
     it('should return if machine learning is disabled', async () => {
       systemMock.get.mockResolvedValue(systemConfigStub.machineLearningDisabled);
 

server/src/services/smart-info.service.ts

@@ -13,12 +13,12 @@ import { usePagination } from 'src/utils/pagination';
 
 @Injectable()
 export class SmartInfoService extends BaseService {
-  @OnEvent({ name: 'config.init' })
+  @OnEvent({ name: 'config.init', workers: [ImmichWorker.MICROSERVICES] })
   async onConfigInit({ newConfig }: ArgOf<'config.init'>) {
     await this.init(newConfig);
   }
 
-  @OnEvent({ name: 'config.update', server: true })
+  @OnEvent({ name: 'config.update', workers: [ImmichWorker.MICROSERVICES], server: true })
   async onConfigUpdate({ oldConfig, newConfig }: ArgOf<'config.update'>) {
     await this.init(newConfig, oldConfig);
   }
@@ -35,7 +35,7 @@ export class SmartInfoService extends BaseService {
   }
 
   private async init(newConfig: SystemConfig, oldConfig?: SystemConfig) {
-    if (this.worker !== ImmichWorker.MICROSERVICES || !isSmartSearchEnabled(newConfig.machineLearning)) {
+    if (!isSmartSearchEnabled(newConfig.machineLearning)) {
       return;
     }