88 lines
2.9 KiB
TypeScript
88 lines
2.9 KiB
TypeScript
import { Inject, Injectable } from '@nestjs/common';
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import Redis from 'ioredis';
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import type { UsersRepository } from '@/models/index.js';
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import { KVCache } from '@/misc/cache.js';
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import type { LocalUser, User } from '@/models/entities/User.js';
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import { DI } from '@/di-symbols.js';
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import { UserEntityService } from '@/core/entities/UserEntityService.js';
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import { bindThis } from '@/decorators.js';
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import { StreamMessages } from '@/server/api/stream/types.js';
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import type { OnApplicationShutdown } from '@nestjs/common';
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@Injectable()
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export class UserCacheService implements OnApplicationShutdown {
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public userByIdCache: KVCache<User>;
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public localUserByNativeTokenCache: KVCache<LocalUser | null>;
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public localUserByIdCache: KVCache<LocalUser>;
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public uriPersonCache: KVCache<User | null>;
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constructor(
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@Inject(DI.redisSubscriber)
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private redisSubscriber: Redis.Redis,
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@Inject(DI.usersRepository)
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private usersRepository: UsersRepository,
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private userEntityService: UserEntityService,
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) {
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//this.onMessage = this.onMessage.bind(this);
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this.userByIdCache = new KVCache<User>(Infinity);
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this.localUserByNativeTokenCache = new KVCache<LocalUser | null>(Infinity);
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this.localUserByIdCache = new KVCache<LocalUser>(Infinity);
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this.uriPersonCache = new KVCache<User | null>(Infinity);
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this.redisSubscriber.on('message', this.onMessage);
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}
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@bindThis
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private async onMessage(_: string, data: string): Promise<void> {
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const obj = JSON.parse(data);
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if (obj.channel === 'internal') {
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const { type, body } = obj.message as StreamMessages['internal']['payload'];
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switch (type) {
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case 'userChangeSuspendedState':
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case 'remoteUserUpdated': {
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const user = await this.usersRepository.findOneByOrFail({ id: body.id });
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this.userByIdCache.set(user.id, user);
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for (const [k, v] of this.uriPersonCache.cache.entries()) {
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if (v.value?.id === user.id) {
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this.uriPersonCache.set(k, user);
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}
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}
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if (this.userEntityService.isLocalUser(user)) {
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this.localUserByNativeTokenCache.set(user.token, user);
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this.localUserByIdCache.set(user.id, user);
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}
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break;
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}
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case 'userTokenRegenerated': {
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const user = await this.usersRepository.findOneByOrFail({ id: body.id }) as LocalUser;
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this.localUserByNativeTokenCache.delete(body.oldToken);
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this.localUserByNativeTokenCache.set(body.newToken, user);
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break;
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}
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case 'follow': {
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const follower = this.userByIdCache.get(body.followerId);
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if (follower) follower.followingCount++;
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const followee = this.userByIdCache.get(body.followeeId);
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if (followee) followee.followersCount++;
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break;
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}
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default:
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break;
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}
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}
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}
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@bindThis
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public findById(userId: User['id']) {
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return this.userByIdCache.fetch(userId, () => this.usersRepository.findOneByOrFail({ id: userId }));
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}
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@bindThis
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public onApplicationShutdown(signal?: string | undefined) {
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this.redisSubscriber.off('message', this.onMessage);
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}
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}
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