mirror of https://github.com/immich-app/immich.git
refactor: websocket repository (#23228)
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commit
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import { Injectable } from '@nestjs/common';
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import {
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OnGatewayConnection,
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OnGatewayDisconnect,
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OnGatewayInit,
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WebSocketGateway,
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WebSocketServer,
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} from '@nestjs/websockets';
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import { Server, Socket } from 'socket.io';
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import { AssetResponseDto } from 'src/dtos/asset-response.dto';
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import { AuthDto } from 'src/dtos/auth.dto';
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import { NotificationDto } from 'src/dtos/notification.dto';
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import { ReleaseNotification, ServerVersionResponseDto } from 'src/dtos/server.dto';
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import { SyncAssetExifV1, SyncAssetV1 } from 'src/dtos/sync.dto';
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import { ArgsOf, EventRepository } from 'src/repositories/event.repository';
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import { LoggingRepository } from 'src/repositories/logging.repository';
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import { handlePromiseError } from 'src/utils/misc';
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export const serverEvents = ['ConfigUpdate'] as const;
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export type ServerEvents = (typeof serverEvents)[number];
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export interface ClientEventMap {
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on_upload_success: [AssetResponseDto];
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on_user_delete: [string];
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on_asset_delete: [string];
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on_asset_trash: [string[]];
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on_asset_update: [AssetResponseDto];
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on_asset_hidden: [string];
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on_asset_restore: [string[]];
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on_asset_stack_update: string[];
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on_person_thumbnail: [string];
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on_server_version: [ServerVersionResponseDto];
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on_config_update: [];
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on_new_release: [ReleaseNotification];
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on_notification: [NotificationDto];
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on_session_delete: [string];
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AssetUploadReadyV1: [{ asset: SyncAssetV1; exif: SyncAssetExifV1 }];
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}
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export type AuthFn = (client: Socket) => Promise<AuthDto>;
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@WebSocketGateway({
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cors: true,
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path: '/api/socket.io',
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transports: ['websocket'],
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})
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@Injectable()
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export class WebsocketRepository implements OnGatewayConnection, OnGatewayDisconnect, OnGatewayInit {
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private authFn?: AuthFn;
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@WebSocketServer()
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private server?: Server;
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constructor(
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private eventRepository: EventRepository,
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private logger: LoggingRepository,
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) {
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this.logger.setContext(WebsocketRepository.name);
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}
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afterInit(server: Server) {
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this.logger.log('Initialized websocket server');
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for (const event of serverEvents) {
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server.on(event, (...args: ArgsOf<any>) => {
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this.logger.debug(`Server event: ${event} (receive)`);
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handlePromiseError(this.eventRepository.onEvent({ name: event, args, server: true }), this.logger);
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});
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}
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}
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async handleConnection(client: Socket) {
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try {
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this.logger.log(`Websocket Connect: ${client.id}`);
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const auth = await this.authenticate(client);
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await client.join(auth.user.id);
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if (auth.session) {
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await client.join(auth.session.id);
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}
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await this.eventRepository.emit('WebsocketConnect', { userId: auth.user.id });
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} catch (error: Error | any) {
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this.logger.error(`Websocket connection error: ${error}`, error?.stack);
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client.emit('error', 'unauthorized');
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client.disconnect();
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}
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}
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async handleDisconnect(client: Socket) {
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this.logger.log(`Websocket Disconnect: ${client.id}`);
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await client.leave(client.nsp.name);
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}
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clientSend<T extends keyof ClientEventMap>(event: T, room: string, ...data: ClientEventMap[T]) {
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this.server?.to(room).emit(event, ...data);
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}
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clientBroadcast<T extends keyof ClientEventMap>(event: T, ...data: ClientEventMap[T]) {
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this.server?.emit(event, ...data);
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}
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serverSend<T extends ServerEvents>(event: T, ...args: ArgsOf<T>): void {
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this.logger.debug(`Server event: ${event} (send)`);
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this.server?.serverSideEmit(event, ...args);
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}
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setAuthFn(fn: (client: Socket) => Promise<AuthDto>) {
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this.authFn = fn;
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}
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private async authenticate(client: Socket) {
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if (!this.authFn) {
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throw new Error('Auth function not set');
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}
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return this.authFn(client);
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}
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}
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