647 lines
26 KiB
TypeScript
647 lines
26 KiB
TypeScript
/*
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* SPDX-FileCopyrightText: syuilo and misskey-project
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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import { Inject, Injectable } from '@nestjs/common';
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import * as Redis from 'ioredis';
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import { In, IsNull, Not } from 'typeorm';
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import type { BlockingsRepository, FollowingsRepository, MutingsRepository, RenoteMutingsRepository, MiUserProfile, UserProfilesRepository, UsersRepository, MiFollowing, NoteThreadMutingsRepository, ChannelFollowingsRepository, UserListMembershipsRepository } from '@/models/_.js';
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import type { MiLocalUser, MiRemoteUser, MiUser } from '@/models/User.js';
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import type { MiUserListMembership } from '@/models/UserListMembership.js';
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import { isLocalUser, isRemoteUser } from '@/models/User.js';
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import { DI } from '@/di-symbols.js';
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import { bindThis } from '@/decorators.js';
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import type { InternalEventTypes } from '@/core/GlobalEventService.js';
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import { InternalEventService } from '@/global/InternalEventService.js';
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import { IdentifiableError } from '@/misc/identifiable-error.js';
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import {
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CacheManagementService,
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type ManagedMemoryKVCache,
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type ManagedQuantumKVCache,
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} from '@/global/CacheManagementService.js';
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import type { OnApplicationShutdown } from '@nestjs/common';
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export interface FollowStats {
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localFollowing: number;
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localFollowers: number;
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remoteFollowing: number;
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remoteFollowers: number;
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}
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@Injectable()
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export class CacheService implements OnApplicationShutdown {
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public readonly userByIdCache: ManagedMemoryKVCache<MiUser>;
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public readonly localUserByNativeTokenCache: ManagedMemoryKVCache<MiLocalUser | null>;
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public readonly localUserByIdCache: ManagedMemoryKVCache<MiLocalUser>;
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public readonly uriPersonCache: ManagedMemoryKVCache<MiUser | null>;
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public readonly userProfileCache: ManagedQuantumKVCache<MiUserProfile>;
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public readonly userMutingsCache: ManagedQuantumKVCache<Set<string>>;
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public readonly userBlockingCache: ManagedQuantumKVCache<Set<string>>;
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public readonly userBlockedCache: ManagedQuantumKVCache<Set<string>>; // NOTE: 「被」Blockキャッシュ
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public readonly userListMembershipsCache: ManagedQuantumKVCache<Map<string, MiUserListMembership>>;
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public readonly listUserMembershipsCache: ManagedQuantumKVCache<Map<string, MiUserListMembership>>;
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public readonly renoteMutingsCache: ManagedQuantumKVCache<Set<string>>;
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public readonly threadMutingsCache: ManagedQuantumKVCache<Set<string>>;
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public readonly noteMutingsCache: ManagedQuantumKVCache<Set<string>>;
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public readonly userFollowingsCache: ManagedQuantumKVCache<Map<string, Omit<MiFollowing, 'isFollowerHibernated'>>>;
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public readonly userFollowersCache: ManagedQuantumKVCache<Map<string, Omit<MiFollowing, 'isFollowerHibernated'>>>;
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public readonly hibernatedUserCache: ManagedQuantumKVCache<boolean>;
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public readonly userFollowStatsCache: ManagedMemoryKVCache<FollowStats>;
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public readonly userFollowingChannelsCache: ManagedQuantumKVCache<Set<string>>;
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constructor(
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@Inject(DI.redis)
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private redisClient: Redis.Redis,
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@Inject(DI.redisForSub)
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private redisForSub: Redis.Redis,
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@Inject(DI.usersRepository)
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private usersRepository: UsersRepository,
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@Inject(DI.userProfilesRepository)
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private userProfilesRepository: UserProfilesRepository,
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@Inject(DI.mutingsRepository)
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private mutingsRepository: MutingsRepository,
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@Inject(DI.blockingsRepository)
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private blockingsRepository: BlockingsRepository,
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@Inject(DI.renoteMutingsRepository)
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private renoteMutingsRepository: RenoteMutingsRepository,
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@Inject(DI.followingsRepository)
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private followingsRepository: FollowingsRepository,
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@Inject(DI.noteThreadMutingsRepository)
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private readonly noteThreadMutingsRepository: NoteThreadMutingsRepository,
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@Inject(DI.channelFollowingsRepository)
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private readonly channelFollowingsRepository: ChannelFollowingsRepository,
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@Inject(DI.userListMembershipsRepository)
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private readonly userListMembershipsRepository: UserListMembershipsRepository,
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private readonly internalEventService: InternalEventService,
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private readonly cacheManagementService: CacheManagementService,
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) {
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//this.onMessage = this.onMessage.bind(this);
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this.userByIdCache = this.cacheManagementService.createMemoryKVCache<MiUser>(1000 * 60 * 5); // 5m
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this.localUserByNativeTokenCache = this.cacheManagementService.createMemoryKVCache<MiLocalUser | null>(1000 * 60 * 5); // 5m
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this.localUserByIdCache = this.cacheManagementService.createMemoryKVCache<MiLocalUser>(1000 * 60 * 5); // 5m
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this.uriPersonCache = this.cacheManagementService.createMemoryKVCache<MiUser | null>(1000 * 60 * 5); // 5m
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this.userProfileCache = this.cacheManagementService.createQuantumKVCache('userProfile', {
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lifetime: 1000 * 60 * 30, // 30m
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fetcher: (key) => this.userProfilesRepository.findOneBy({ userId: key }),
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bulkFetcher: userIds => this.userProfilesRepository.findBy({ userId: In(userIds) }).then(ps => ps.map(p => [p.userId, p])),
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});
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this.userMutingsCache = this.cacheManagementService.createQuantumKVCache<Set<string>>('userMutings', {
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lifetime: 1000 * 60 * 30, // 30m
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fetcher: (key) => this.mutingsRepository.find({ where: { muterId: key }, select: ['muteeId'] }).then(xs => new Set(xs.map(x => x.muteeId))),
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bulkFetcher: muterIds => this.mutingsRepository
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.createQueryBuilder('muting')
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.select('"muting"."muterId"', 'muterId')
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.addSelect('array_agg("muting"."muteeId")', 'muteeIds')
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.where({ muterId: In(muterIds) })
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.groupBy('muting.muterId')
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.getRawMany<{ muterId: string, muteeIds: string[] }>()
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.then(ms => ms.map(m => [m.muterId, new Set(m.muteeIds)])),
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});
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this.userBlockingCache = this.cacheManagementService.createQuantumKVCache<Set<string>>('userBlocking', {
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lifetime: 1000 * 60 * 30, // 30m
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fetcher: (key) => this.blockingsRepository.find({ where: { blockerId: key }, select: ['blockeeId'] }).then(xs => new Set(xs.map(x => x.blockeeId))),
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bulkFetcher: blockerIds => this.blockingsRepository
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.createQueryBuilder('blocking')
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.select('"blocking"."blockerId"', 'blockerId')
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.addSelect('array_agg("blocking"."blockeeId")', 'blockeeIds')
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.where({ blockerId: In(blockerIds) })
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.groupBy('blocking.blockerId')
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.getRawMany<{ blockerId: string, blockeeIds: string[] }>()
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.then(ms => ms.map(m => [m.blockerId, new Set(m.blockeeIds)])),
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});
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this.userBlockedCache = this.cacheManagementService.createQuantumKVCache<Set<string>>('userBlocked', {
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lifetime: 1000 * 60 * 30, // 30m
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fetcher: (key) => this.blockingsRepository.find({ where: { blockeeId: key }, select: ['blockerId'] }).then(xs => new Set(xs.map(x => x.blockerId))),
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bulkFetcher: blockeeIds => this.blockingsRepository
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.createQueryBuilder('blocking')
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.select('"blocking"."blockeeId"', 'blockeeId')
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.addSelect('array_agg("blocking"."blockerId")', 'blockerIds')
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.where({ blockeeId: In(blockeeIds) })
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.groupBy('blocking.blockeeId')
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.getRawMany<{ blockeeId: string, blockerIds: string[] }>()
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.then(ms => ms.map(m => [m.blockeeId, new Set(m.blockerIds)])),
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});
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this.userListMembershipsCache = this.cacheManagementService.createQuantumKVCache<Map<string, MiUserListMembership>>('userListMemberships', {
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lifetime: 1000 * 60 * 30, // 30m
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fetcher: async userId => await this.userListMembershipsRepository.findBy({ userId }).then(ms => new Map(ms.map(m => [m.userListId, m]))),
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bulkFetcher: async userIds => await this.userListMembershipsRepository
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.findBy({ userId: In(userIds) })
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.then(ms => ms
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.reduce((groups, m) => {
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let listsForUser = groups.get(m.userId);
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if (!listsForUser) {
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listsForUser = new Map();
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groups.set(m.userId, listsForUser);
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}
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listsForUser.set(m.userListId, m);
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return groups;
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}, new Map<string, Map<string, MiUserListMembership>>)),
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});
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this.listUserMembershipsCache = this.cacheManagementService.createQuantumKVCache<Map<string, MiUserListMembership>>('listUserMemberships', {
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lifetime: 1000 * 60 * 30, // 30m
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fetcher: async userListId => await this.userListMembershipsRepository.findBy({ userListId }).then(ms => new Map(ms.map(m => [m.userId, m]))),
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bulkFetcher: async userListIds => await this.userListMembershipsRepository
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.findBy({ userListId: In(userListIds) })
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.then(ms => ms
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.reduce((groups, m) => {
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let usersForList = groups.get(m.userListId);
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if (!usersForList) {
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usersForList = new Map();
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groups.set(m.userListId, usersForList);
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}
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usersForList.set(m.userId, m);
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return groups;
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}, new Map<string, Map<string, MiUserListMembership>>)),
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});
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this.renoteMutingsCache = this.cacheManagementService.createQuantumKVCache<Set<string>>('renoteMutings', {
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lifetime: 1000 * 60 * 30, // 30m
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fetcher: (key) => this.renoteMutingsRepository.find({ where: { muterId: key }, select: ['muteeId'] }).then(xs => new Set(xs.map(x => x.muteeId))),
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bulkFetcher: muterIds => this.renoteMutingsRepository
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.createQueryBuilder('muting')
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.select('"muting"."muterId"', 'muterId')
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.addSelect('array_agg("muting"."muteeId")', 'muteeIds')
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.where({ muterId: In(muterIds) })
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.groupBy('muting.muterId')
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.getRawMany<{ muterId: string, muteeIds: string[] }>()
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.then(ms => ms.map(m => [m.muterId, new Set(m.muteeIds)])),
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});
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this.threadMutingsCache = this.cacheManagementService.createQuantumKVCache<Set<string>>('threadMutings', {
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lifetime: 1000 * 60 * 30, // 30m
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fetcher: muterId => this.noteThreadMutingsRepository
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.find({ where: { userId: muterId, isPostMute: false }, select: { threadId: true } })
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.then(ms => new Set(ms.map(m => m.threadId))),
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bulkFetcher: muterIds => this.noteThreadMutingsRepository
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.createQueryBuilder('muting')
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.select('"muting"."userId"', 'userId')
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.addSelect('array_agg("muting"."threadId")', 'threadIds')
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.groupBy('"muting"."userId"')
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.where({ userId: In(muterIds), isPostMute: false })
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.getRawMany<{ userId: string, threadIds: string[] }>()
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.then(ms => ms.map(m => [m.userId, new Set(m.threadIds)])),
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});
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this.noteMutingsCache = this.cacheManagementService.createQuantumKVCache<Set<string>>('noteMutings', {
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lifetime: 1000 * 60 * 30, // 30m
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fetcher: muterId => this.noteThreadMutingsRepository
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.find({ where: { userId: muterId, isPostMute: true }, select: { threadId: true } })
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.then(ms => new Set(ms.map(m => m.threadId))),
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bulkFetcher: muterIds => this.noteThreadMutingsRepository
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.createQueryBuilder('muting')
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.select('"muting"."userId"', 'userId')
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.addSelect('array_agg("muting"."threadId")', 'threadIds')
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.groupBy('"muting"."userId"')
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.where({ userId: In(muterIds), isPostMute: true })
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.getRawMany<{ userId: string, threadIds: string[] }>()
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.then(ms => ms.map(m => [m.userId, new Set(m.threadIds)])),
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});
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this.userFollowingsCache = this.cacheManagementService.createQuantumKVCache<Map<string, Omit<MiFollowing, 'isFollowerHibernated'>>>('userFollowings', {
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lifetime: 1000 * 60 * 30, // 30m
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fetcher: (key) => this.followingsRepository.findBy({ followerId: key }).then(xs => new Map(xs.map(f => [f.followeeId, f]))),
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bulkFetcher: followerIds => this.followingsRepository
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.findBy({ followerId: In(followerIds) })
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.then(fs => fs
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.reduce((groups, f) => {
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let group = groups.get(f.followerId);
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if (!group) {
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group = new Map();
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groups.set(f.followerId, group);
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}
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group.set(f.followeeId, f);
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return groups;
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}, new Map<string, Map<string, Omit<MiFollowing, 'isFollowerHibernated'>>>)),
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});
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this.userFollowersCache = this.cacheManagementService.createQuantumKVCache<Map<string, Omit<MiFollowing, 'isFollowerHibernated'>>>('userFollowers', {
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lifetime: 1000 * 60 * 30, // 30m
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fetcher: followeeId => this.followingsRepository.findBy({ followeeId: followeeId }).then(xs => new Map(xs.map(x => [x.followerId, x]))),
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bulkFetcher: followeeIds => this.followingsRepository
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.findBy({ followeeId: In(followeeIds) })
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.then(fs => fs
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.reduce((groups, f) => {
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let group = groups.get(f.followeeId);
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if (!group) {
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group = new Map();
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groups.set(f.followeeId, group);
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}
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group.set(f.followerId, f);
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return groups;
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}, new Map<string, Map<string, Omit<MiFollowing, 'isFollowerHibernated'>>>)),
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});
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this.hibernatedUserCache = this.cacheManagementService.createQuantumKVCache<boolean>('hibernatedUsers', {
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lifetime: 1000 * 60 * 30, // 30m
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fetcher: async userId => {
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const result = await this.usersRepository.findOne({
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where: { id: userId },
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select: { isHibernated: true },
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});
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return result?.isHibernated;
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},
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bulkFetcher: async userIds => {
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const results = await this.usersRepository.find({
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where: { id: In(userIds) },
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select: { id: true, isHibernated: true },
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});
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return results.map(({ id, isHibernated }) => [id, isHibernated]);
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},
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onChanged: async userIds => {
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// We only update local copies since each process will get this event, but we can have user objects in multiple different caches.
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// Before doing anything else we must "find" all the objects to update.
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const userObjects = new Map<string, MiUser[]>();
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const toUpdate: string[] = [];
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for (const uid of userIds) {
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const toAdd: MiUser[] = [];
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const localUserById = this.localUserByIdCache.get(uid);
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if (localUserById) toAdd.push(localUserById);
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const userById = this.userByIdCache.get(uid);
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if (userById) toAdd.push(userById);
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if (toAdd.length > 0) {
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toUpdate.push(uid);
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userObjects.set(uid, toAdd);
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}
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}
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// In many cases, we won't have to do anything.
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// Skipping the DB fetch ensures that this remains a single-step synchronous process.
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if (toUpdate.length > 0) {
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const hibernations = await this.usersRepository.find({ where: { id: In(toUpdate) }, select: { id: true, isHibernated: true } });
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for (const { id, isHibernated } of hibernations) {
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const users = userObjects.get(id);
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if (users) {
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for (const u of users) {
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u.isHibernated = isHibernated;
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}
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}
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}
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}
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},
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});
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this.userFollowStatsCache = this.cacheManagementService.createMemoryKVCache<FollowStats>(1000 * 60 * 10); // 10 minutes
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this.userFollowingChannelsCache = this.cacheManagementService.createQuantumKVCache<Set<string>>('userFollowingChannels', {
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lifetime: 1000 * 60 * 30, // 30m
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fetcher: (key) => this.channelFollowingsRepository.find({
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where: { followerId: key },
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select: ['followeeId'],
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}).then(xs => new Set(xs.map(x => x.followeeId))),
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// TODO bulk fetcher
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});
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this.internalEventService.on('userChangeSuspendedState', this.onUserEvent);
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this.internalEventService.on('userChangeDeletedState', this.onUserEvent);
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this.internalEventService.on('remoteUserUpdated', this.onUserEvent);
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this.internalEventService.on('localUserUpdated', this.onUserEvent);
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this.internalEventService.on('userTokenRegenerated', this.onTokenEvent);
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this.internalEventService.on('follow', this.onFollowEvent);
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this.internalEventService.on('unfollow', this.onFollowEvent);
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// For these, only listen to local events because quantum cache handles the sync.
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this.internalEventService.on('followChannel', this.onChannelEvent, { ignoreRemote: true });
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this.internalEventService.on('unfollowChannel', this.onChannelEvent, { ignoreRemote: true });
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this.internalEventService.on('updateUserProfile', this.onProfileEvent, { ignoreRemote: true });
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this.internalEventService.on('userListMemberAdded', this.onListMemberEvent, { ignoreRemote: true });
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this.internalEventService.on('userListMemberUpdated', this.onListMemberEvent, { ignoreRemote: true });
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this.internalEventService.on('userListMemberRemoved', this.onListMemberEvent, { ignoreRemote: true });
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this.internalEventService.on('userListMemberBulkAdded', this.onListMemberEvent, { ignoreRemote: true });
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this.internalEventService.on('userListMemberBulkUpdated', this.onListMemberEvent, { ignoreRemote: true });
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this.internalEventService.on('userListMemberBulkRemoved', this.onListMemberEvent, { ignoreRemote: true });
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}
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@bindThis
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private async onUserEvent<E extends 'userChangeSuspendedState' | 'userChangeDeletedState' | 'remoteUserUpdated' | 'localUserUpdated'>(body: InternalEventTypes[E], _: E, isLocal: boolean): Promise<void> {
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{
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{
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{
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const user = await this.usersRepository.findOneBy({ id: body.id });
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if (user == null) {
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this.userByIdCache.delete(body.id);
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this.localUserByIdCache.delete(body.id);
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for (const [k, v] of this.uriPersonCache.entries) {
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if (v.value?.id === body.id) {
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this.uriPersonCache.delete(k);
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}
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}
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// Contains IDs of all lists where this user is a member.
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const userListMemberships = this.listUserMembershipsCache
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.entries()
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.filter(e => e[1].has(body.id))
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.map(e => e[0])
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.toArray();
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if (isLocal) {
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await Promise.all([
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this.userProfileCache.delete(body.id),
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this.userMutingsCache.delete(body.id),
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this.userBlockingCache.delete(body.id),
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this.userBlockedCache.delete(body.id),
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this.renoteMutingsCache.delete(body.id),
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this.userFollowingsCache.delete(body.id),
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this.userFollowersCache.delete(body.id),
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this.hibernatedUserCache.delete(body.id),
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this.threadMutingsCache.delete(body.id),
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this.noteMutingsCache.delete(body.id),
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this.userListMembershipsCache.delete(body.id),
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this.listUserMembershipsCache.deleteMany(userListMemberships),
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]);
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}
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} else {
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this.userByIdCache.set(user.id, user);
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for (const [k, v] of this.uriPersonCache.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 (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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}
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}
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}
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}
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}
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@bindThis
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private async onTokenEvent<E extends 'userTokenRegenerated'>(body: InternalEventTypes[E]): Promise<void> {
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{
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|
{
|
|
{
|
|
const user = await this.usersRepository.findOneByOrFail({ id: body.id }) as MiLocalUser;
|
|
this.localUserByNativeTokenCache.delete(body.oldToken);
|
|
this.localUserByNativeTokenCache.set(body.newToken, user);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
@bindThis
|
|
private async onFollowEvent<E extends 'follow' | 'unfollow'>(body: InternalEventTypes[E], type: E): Promise<void> {
|
|
{
|
|
// TODO should we filter for local/remote events?
|
|
switch (type) {
|
|
case 'follow': {
|
|
const follower = this.userByIdCache.get(body.followerId);
|
|
if (follower) follower.followingCount++;
|
|
const followee = this.userByIdCache.get(body.followeeId);
|
|
if (followee) followee.followersCount++;
|
|
await Promise.all([
|
|
this.userFollowingsCache.delete(body.followerId),
|
|
this.userFollowersCache.delete(body.followeeId),
|
|
]);
|
|
this.userFollowStatsCache.delete(body.followerId);
|
|
this.userFollowStatsCache.delete(body.followeeId);
|
|
break;
|
|
}
|
|
case 'unfollow': {
|
|
const follower = this.userByIdCache.get(body.followerId);
|
|
if (follower) follower.followingCount--;
|
|
const followee = this.userByIdCache.get(body.followeeId);
|
|
if (followee) followee.followersCount--;
|
|
await Promise.all([
|
|
this.userFollowingsCache.delete(body.followerId),
|
|
this.userFollowersCache.delete(body.followeeId),
|
|
]);
|
|
this.userFollowStatsCache.delete(body.followerId);
|
|
this.userFollowStatsCache.delete(body.followeeId);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
@bindThis
|
|
private async onChannelEvent<E extends 'followChannel' | 'unfollowChannel'>(body: InternalEventTypes[E]): Promise<void> {
|
|
await this.userFollowingChannelsCache.delete(body.userId);
|
|
}
|
|
|
|
@bindThis
|
|
private async onProfileEvent<E extends 'updateUserProfile'>(body: InternalEventTypes[E]): Promise<void> {
|
|
await this.userProfileCache.delete(body.userId);
|
|
}
|
|
|
|
@bindThis
|
|
private async onListMemberEvent<E extends 'userListMemberAdded' | 'userListMemberUpdated' | 'userListMemberRemoved' | 'userListMemberBulkAdded' | 'userListMemberBulkUpdated' | 'userListMemberBulkRemoved'>(body: InternalEventTypes[E]): Promise<void> {
|
|
const userListIds = 'userListIds' in body ? body.userListIds : [body.userListId];
|
|
await Promise.all([
|
|
this.userListMembershipsCache.delete(body.memberId),
|
|
this.listUserMembershipsCache.deleteMany(userListIds),
|
|
]);
|
|
}
|
|
|
|
@bindThis
|
|
public findUserById(userId: MiUser['id']) {
|
|
return this.userByIdCache.fetch(userId, () => this.usersRepository.findOneByOrFail({ id: userId }));
|
|
}
|
|
|
|
@bindThis
|
|
public async findLocalUserById(userId: MiUser['id']): Promise<MiLocalUser> {
|
|
const user = await this.findUserById(userId);
|
|
|
|
if (!isLocalUser(user)) {
|
|
throw new IdentifiableError('aeac1339-2550-4521-a8e3-781f06d98656', 'User is not local');
|
|
}
|
|
|
|
return user;
|
|
}
|
|
|
|
@bindThis
|
|
public async findRemoteUserById(userId: MiUser['id']): Promise<MiRemoteUser> {
|
|
const user = await this.findUserById(userId);
|
|
|
|
if (!isRemoteUser(user)) {
|
|
throw new IdentifiableError('aeac1339-2550-4521-a8e3-781f06d98656', 'User is not remote');
|
|
}
|
|
|
|
return user;
|
|
}
|
|
|
|
@bindThis
|
|
public findOptionalUserById(userId: MiUser['id']) {
|
|
return this.userByIdCache.fetchMaybe(userId, async () => await this.usersRepository.findOneBy({ id: userId }) ?? undefined);
|
|
}
|
|
|
|
@bindThis
|
|
public async getFollowStats(userId: MiUser['id']): Promise<FollowStats> {
|
|
return await this.userFollowStatsCache.fetch(userId, async () => {
|
|
const stats = {
|
|
localFollowing: 0,
|
|
localFollowers: 0,
|
|
remoteFollowing: 0,
|
|
remoteFollowers: 0,
|
|
};
|
|
|
|
const followings = await this.followingsRepository.findBy([
|
|
{ followerId: userId },
|
|
{ followeeId: userId },
|
|
]);
|
|
|
|
for (const following of followings) {
|
|
if (following.followerId === userId) {
|
|
// increment following; user is a follower of someone else
|
|
if (following.followeeHost == null) {
|
|
stats.localFollowing++;
|
|
} else {
|
|
stats.remoteFollowing++;
|
|
}
|
|
} else if (following.followeeId === userId) {
|
|
// increment followers; user is followed by someone else
|
|
if (following.followerHost == null) {
|
|
stats.localFollowers++;
|
|
} else {
|
|
stats.remoteFollowers++;
|
|
}
|
|
} else {
|
|
// Should never happen
|
|
}
|
|
}
|
|
|
|
// Infer remote-remote followers heuristically, since we don't track that info directly.
|
|
const user = await this.findUserById(userId);
|
|
if (user.host !== null) {
|
|
stats.remoteFollowing = Math.max(0, user.followingCount - stats.localFollowing);
|
|
stats.remoteFollowers = Math.max(0, user.followersCount - stats.localFollowers);
|
|
}
|
|
|
|
return stats;
|
|
});
|
|
}
|
|
|
|
@bindThis
|
|
public async getUsers(userIds: Iterable<string>): Promise<Map<string, MiUser>> {
|
|
const users = new Map<string, MiUser>;
|
|
|
|
const toFetch: string[] = [];
|
|
for (const userId of userIds) {
|
|
const fromCache = this.userByIdCache.get(userId);
|
|
if (fromCache) {
|
|
users.set(userId, fromCache);
|
|
} else {
|
|
toFetch.push(userId);
|
|
}
|
|
}
|
|
|
|
if (toFetch.length > 0) {
|
|
const fetched = await this.usersRepository.findBy({
|
|
id: In(toFetch),
|
|
});
|
|
|
|
for (const user of fetched) {
|
|
users.set(user.id, user);
|
|
this.userByIdCache.set(user.id, user);
|
|
}
|
|
}
|
|
|
|
return users;
|
|
}
|
|
|
|
@bindThis
|
|
public async isFollowing(follower: string | { id: string }, followee: string | { id: string }): Promise<boolean> {
|
|
const followerId = typeof(follower) === 'string' ? follower : follower.id;
|
|
const followeeId = typeof(followee) === 'string' ? followee : followee.id;
|
|
|
|
// This lets us use whichever one is in memory, falling back to DB fetch via userFollowingsCache.
|
|
return this.userFollowersCache.get(followeeId)?.has(followerId)
|
|
?? (await this.userFollowingsCache.fetch(followerId)).has(followeeId);
|
|
}
|
|
|
|
/**
|
|
* Returns all hibernated followers.
|
|
*/
|
|
@bindThis
|
|
public async getHibernatedFollowers(followeeId: string): Promise<MiFollowing[]> {
|
|
const followers = await this.getFollowersWithHibernation(followeeId);
|
|
return followers.filter(f => f.isFollowerHibernated);
|
|
}
|
|
|
|
/**
|
|
* Returns all non-hibernated followers.
|
|
*/
|
|
@bindThis
|
|
public async getNonHibernatedFollowers(followeeId: string): Promise<MiFollowing[]> {
|
|
const followers = await this.getFollowersWithHibernation(followeeId);
|
|
return followers.filter(f => !f.isFollowerHibernated);
|
|
}
|
|
|
|
/**
|
|
* Returns follower relations with populated isFollowerHibernated.
|
|
* If you don't need this field, then please use userFollowersCache directly for reduced overhead.
|
|
*/
|
|
@bindThis
|
|
public async getFollowersWithHibernation(followeeId: string): Promise<MiFollowing[]> {
|
|
const followers = await this.userFollowersCache.fetch(followeeId);
|
|
const hibernations = await this.hibernatedUserCache.fetchMany(followers.keys()).then(fs => fs.reduce((map, f) => {
|
|
map.set(f[0], f[1]);
|
|
return map;
|
|
}, new Map<string, boolean>));
|
|
return Array.from(followers.values()).map(following => ({
|
|
...following,
|
|
isFollowerHibernated: hibernations.get(following.followerId) ?? false,
|
|
}));
|
|
}
|
|
|
|
/**
|
|
* Refreshes follower and following relations for the given user.
|
|
*/
|
|
@bindThis
|
|
public async refreshFollowRelationsFor(userId: string): Promise<void> {
|
|
const followings = await this.userFollowingsCache.refresh(userId);
|
|
const followees = Array.from(followings.values()).map(f => f.followeeId);
|
|
await this.userFollowersCache.deleteMany(followees);
|
|
}
|
|
|
|
@bindThis
|
|
public clear(): void {
|
|
this.cacheManagementService.clear();
|
|
}
|
|
|
|
@bindThis
|
|
public dispose(): void {
|
|
this.internalEventService.off('userChangeSuspendedState', this.onUserEvent);
|
|
this.internalEventService.off('userChangeDeletedState', this.onUserEvent);
|
|
this.internalEventService.off('remoteUserUpdated', this.onUserEvent);
|
|
this.internalEventService.off('localUserUpdated', this.onUserEvent);
|
|
this.internalEventService.off('userTokenRegenerated', this.onTokenEvent);
|
|
this.internalEventService.off('follow', this.onFollowEvent);
|
|
this.internalEventService.off('unfollow', this.onFollowEvent);
|
|
this.internalEventService.off('followChannel', this.onChannelEvent);
|
|
this.internalEventService.off('unfollowChannel', this.onChannelEvent);
|
|
this.internalEventService.off('updateUserProfile', this.onProfileEvent);
|
|
this.internalEventService.off('userListMemberAdded', this.onListMemberEvent);
|
|
this.internalEventService.off('userListMemberUpdated', this.onListMemberEvent);
|
|
this.internalEventService.off('userListMemberRemoved', this.onListMemberEvent);
|
|
this.internalEventService.off('userListMemberBulkAdded', this.onListMemberEvent);
|
|
this.internalEventService.off('userListMemberBulkUpdated', this.onListMemberEvent);
|
|
this.internalEventService.off('userListMemberBulkRemoved', this.onListMemberEvent);
|
|
}
|
|
|
|
@bindThis
|
|
public onApplicationShutdown(): void {
|
|
this.dispose();
|
|
}
|
|
}
|