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import { Inject, Injectable } from '@nestjs/common';
import * as Redis from 'ioredis';
import type { BlockingsRepository, ChannelFollowingsRepository, FollowingsRepository, MutingsRepository, RenoteMutingsRepository, UserProfile, UserProfilesRepository, UsersRepository } from '@/models/index.js';
import { MemoryKVCache, RedisKVCache } from '@/misc/cache.js';
import type { LocalUser, User } from '@/models/entities/User.js';
import { DI } from '@/di-symbols.js';
import { UserEntityService } from '@/core/entities/UserEntityService.js';
import { bindThis } from '@/decorators.js';
import { StreamMessages } from '@/server/api/stream/types.js';
import type { OnApplicationShutdown } from '@nestjs/common';
@Injectable()
export class CacheService implements OnApplicationShutdown {
public userByIdCache: MemoryKVCache<User>;
public localUserByNativeTokenCache: MemoryKVCache<LocalUser | null>;
public localUserByIdCache: MemoryKVCache<LocalUser>;
public uriPersonCache: MemoryKVCache<User | null>;
public userProfileCache: RedisKVCache<UserProfile>;
public userMutingsCache: RedisKVCache<Set<string>>;
public userBlockingCache: RedisKVCache<Set<string>>;
public userBlockedCache: RedisKVCache<Set<string>>; // NOTE: 「被」Blockキャッシュ
public renoteMutingsCache: RedisKVCache<Set<string>>;
public userFollowingsCache: RedisKVCache<Set<string>>;
public userFollowingChannelsCache: RedisKVCache<Set<string>>;
constructor(
@Inject(DI.redis)
private redisClient: Redis.Redis,
@Inject(DI.redisForSub)
private redisForSub: Redis.Redis,
@Inject(DI.usersRepository)
private usersRepository: UsersRepository,
@Inject(DI.userProfilesRepository)
private userProfilesRepository: UserProfilesRepository,
@Inject(DI.mutingsRepository)
private mutingsRepository: MutingsRepository,
@Inject(DI.blockingsRepository)
private blockingsRepository: BlockingsRepository,
@Inject(DI.renoteMutingsRepository)
private renoteMutingsRepository: RenoteMutingsRepository,
@Inject(DI.followingsRepository)
private followingsRepository: FollowingsRepository,
@Inject(DI.channelFollowingsRepository)
private channelFollowingsRepository: ChannelFollowingsRepository,
private userEntityService: UserEntityService,
) {
//this.onMessage = this.onMessage.bind(this);
this.userByIdCache = new MemoryKVCache<User>(Infinity);
this.localUserByNativeTokenCache = new MemoryKVCache<LocalUser | null>(Infinity);
this.localUserByIdCache = new MemoryKVCache<LocalUser>(Infinity);
this.uriPersonCache = new MemoryKVCache<User | null>(Infinity);
this.userProfileCache = new RedisKVCache<UserProfile>(this.redisClient, 'userProfile', {
lifetime: 1000 * 60 * 30, // 30m
memoryCacheLifetime: 1000 * 60, // 1m
fetcher: (key) => this.userProfilesRepository.findOneByOrFail({ userId: key }),
toRedisConverter: (value) => JSON.stringify(value),
fromRedisConverter: (value) => JSON.parse(value), // TODO: date型の考慮
});
this.userMutingsCache = new RedisKVCache<Set<string>>(this.redisClient, 'userMutings', {
lifetime: 1000 * 60 * 30, // 30m
memoryCacheLifetime: 1000 * 60, // 1m
fetcher: (key) => this.mutingsRepository.find({ where: { muterId: key }, select: ['muteeId'] }).then(xs => new Set(xs.map(x => x.muteeId))),
toRedisConverter: (value) => JSON.stringify(Array.from(value)),
fromRedisConverter: (value) => new Set(JSON.parse(value)),
});
this.userBlockingCache = new RedisKVCache<Set<string>>(this.redisClient, 'userBlocking', {
lifetime: 1000 * 60 * 30, // 30m
memoryCacheLifetime: 1000 * 60, // 1m
fetcher: (key) => this.blockingsRepository.find({ where: { blockerId: key }, select: ['blockeeId'] }).then(xs => new Set(xs.map(x => x.blockeeId))),
toRedisConverter: (value) => JSON.stringify(Array.from(value)),
fromRedisConverter: (value) => new Set(JSON.parse(value)),
});
this.userBlockedCache = new RedisKVCache<Set<string>>(this.redisClient, 'userBlocked', {
lifetime: 1000 * 60 * 30, // 30m
memoryCacheLifetime: 1000 * 60, // 1m
fetcher: (key) => this.blockingsRepository.find({ where: { blockeeId: key }, select: ['blockerId'] }).then(xs => new Set(xs.map(x => x.blockerId))),
toRedisConverter: (value) => JSON.stringify(Array.from(value)),
fromRedisConverter: (value) => new Set(JSON.parse(value)),
});
this.renoteMutingsCache = new RedisKVCache<Set<string>>(this.redisClient, 'renoteMutings', {
lifetime: 1000 * 60 * 30, // 30m
memoryCacheLifetime: 1000 * 60, // 1m
fetcher: (key) => this.renoteMutingsRepository.find({ where: { muterId: key }, select: ['muteeId'] }).then(xs => new Set(xs.map(x => x.muteeId))),
toRedisConverter: (value) => JSON.stringify(Array.from(value)),
fromRedisConverter: (value) => new Set(JSON.parse(value)),
});
this.userFollowingsCache = new RedisKVCache<Set<string>>(this.redisClient, 'userFollowings', {
lifetime: 1000 * 60 * 30, // 30m
memoryCacheLifetime: 1000 * 60, // 1m
fetcher: (key) => this.followingsRepository.find({ where: { followerId: key }, select: ['followeeId'] }).then(xs => new Set(xs.map(x => x.followeeId))),
toRedisConverter: (value) => JSON.stringify(Array.from(value)),
fromRedisConverter: (value) => new Set(JSON.parse(value)),
});
this.userFollowingChannelsCache = new RedisKVCache<Set<string>>(this.redisClient, 'userFollowingChannels', {
lifetime: 1000 * 60 * 30, // 30m
memoryCacheLifetime: 1000 * 60, // 1m
fetcher: (key) => this.channelFollowingsRepository.find({ where: { followerId: key }, select: ['followeeId'] }).then(xs => new Set(xs.map(x => x.followeeId))),
toRedisConverter: (value) => JSON.stringify(Array.from(value)),
fromRedisConverter: (value) => new Set(JSON.parse(value)),
});
this.redisForSub.on('message', this.onMessage);
}
@bindThis
private async onMessage(_: string, data: string): Promise<void> {
const obj = JSON.parse(data);
if (obj.channel === 'internal') {
const { type, body } = obj.message as StreamMessages['internal']['payload'];
switch (type) {
case 'userChangeSuspendedState':
case 'remoteUserUpdated': {
const user = await this.usersRepository.findOneByOrFail({ id: body.id });
this.userByIdCache.set(user.id, user);
for (const [k, v] of this.uriPersonCache.cache.entries()) {
if (v.value?.id === user.id) {
this.uriPersonCache.set(k, user);
}
}
if (this.userEntityService.isLocalUser(user)) {
this.localUserByNativeTokenCache.set(user.token!, user);
this.localUserByIdCache.set(user.id, user);
}
break;
}
case 'userTokenRegenerated': {
const user = await this.usersRepository.findOneByOrFail({ id: body.id }) as LocalUser;
this.localUserByNativeTokenCache.delete(body.oldToken);
this.localUserByNativeTokenCache.set(body.newToken, user);
break;
}
case 'follow': {
const follower = this.userByIdCache.get(body.followerId);
if (follower) follower.followingCount++;
const followee = this.userByIdCache.get(body.followeeId);
if (followee) followee.followersCount++;
break;
}
default:
break;
}
}
}
@bindThis
public findUserById(userId: User['id']) {
return this.userByIdCache.fetch(userId, () => this.usersRepository.findOneByOrFail({ id: userId }));
}
@bindThis
public onApplicationShutdown(signal?: string | undefined) {
this.redisForSub.off('message', this.onMessage);
}
}
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