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/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
import { setTimeout } from 'node:timers/promises';
import { Inject, Injectable } from '@nestjs/common';
import { DI } from '@/di-symbols.js';
import type { MiMeta, MiNote, NotesRepository } from '@/models/_.js';
import type Logger from '@/logger.js';
import { bindThis } from '@/decorators.js';
import { IdService } from '@/core/IdService.js';
import { QueueLoggerService } from '../QueueLoggerService.js';
import type * as Bull from 'bullmq';
@Injectable()
export class CleanRemoteNotesProcessorService {
private logger: Logger;
constructor(
@Inject(DI.meta)
private meta: MiMeta,
@Inject(DI.notesRepository)
private notesRepository: NotesRepository,
private idService: IdService,
private queueLoggerService: QueueLoggerService,
) {
this.logger = this.queueLoggerService.logger.createSubLogger('clean-remote-notes');
}
@bindThis
public async process(job: Bull.Job<Record<string, unknown>>): Promise<{
deletedCount: number;
oldest: number | null;
newest: number | null;
skipped?: boolean;
}> {
if (!this.meta.enableRemoteNotesCleaning) {
this.logger.info('Remote notes cleaning is disabled, skipping...');
return {
deletedCount: 0,
oldest: null,
newest: null,
skipped: true,
};
}
this.logger.info('cleaning remote notes...');
const maxDuration = this.meta.remoteNotesCleaningMaxProcessingDurationInMinutes * 60 * 1000; // Convert minutes to milliseconds
const startAt = Date.now();
const MAX_NOTE_COUNT_PER_QUERY = 50;
//#retion queries
// We use string literals instead of query builder for several reasons:
// - for removeCondition, we need to use it in having clause, which is not supported by Brackets.
// - for recursive part, we need to preserve the order of columns, but typeorm query builder does not guarantee the order of columns in the result query
// The condition for removing the notes.
// The note must be:
// - old enough (older than the newestLimit)
// - a remote note (userHost is not null).
// - not have clipped
// - not have pinned on the user profile
// - not has been favorite by any user
const removeCondition = 'note.id < :newestLimit'
+ ' AND note."clippedCount" = 0'
+ ' AND note."userHost" IS NOT NULL'
// using both userId and noteId instead of just noteId to use index on user_note_pining table.
// This is safe because notes are only pinned by the user who created them.
+ ' AND NOT EXISTS(SELECT 1 FROM "user_note_pining" WHERE "noteId" = note."id" AND "userId" = note."userId")'
// We cannot use userId trick because users can favorite notes from other users.
+ ' AND NOT EXISTS(SELECT 1 FROM "note_favorite" WHERE "noteId" = note."id")'
;
// The initiator query contains the oldest ${MAX_NOTE_COUNT_PER_QUERY} remote non-clipped notes
const initiatorQuery = this.notesRepository.createQueryBuilder('note')
.select('note.id', 'id')
.where(removeCondition)
.andWhere('note.id > :cursor')
.orderBy('note.id', 'ASC')
.limit(MAX_NOTE_COUNT_PER_QUERY);
// The union query queries the related notes and replies related to the initiator query
const unionQuery = `
SELECT "note"."id", "note"."replyId", "note"."renoteId", rn."initiatorId"
FROM "note" "note"
INNER JOIN "related_notes" "rn"
ON "note"."replyId" = rn.id
OR "note"."renoteId" = rn.id
OR "note"."id" = rn."replyId"
OR "note"."id" = rn."renoteId"
`;
const selectRelatedNotesFromInitiatorIdsQuery = `
SELECT "note"."id" AS "id", "note"."replyId" AS "replyId", "note"."renoteId" AS "renoteId", "note"."id" AS "initiatorId"
FROM "note" "note" WHERE "note"."id" IN (:...initiatorIds)
`;
const recursiveQuery = `(${selectRelatedNotesFromInitiatorIdsQuery}) UNION (${unionQuery})`;
const removableInitiatorNotesQuery = this.notesRepository.createQueryBuilder('note')
.select('rn."initiatorId"')
.innerJoin('related_notes', 'rn', 'note.id = rn.id')
.groupBy('rn."initiatorId"')
.having(`bool_and(${removeCondition})`);
const notesQuery = this.notesRepository.createQueryBuilder('note')
.addCommonTableExpression(recursiveQuery, 'related_notes', { recursive: true })
.select('note.id', 'id')
.addSelect('rn."initiatorId"')
.innerJoin('related_notes', 'rn', 'note.id = rn.id')
.where(`rn."initiatorId" IN (${removableInitiatorNotesQuery.getQuery()})`)
.distinctOn(['note.id']);
//#endregion
const stats = {
deletedCount: 0,
oldest: null as number | null,
newest: null as number | null,
};
// The date limit for the newest note to be considered for deletion.
// All notes newer than this limit will always be retained.
const newestLimit = this.idService.gen(Date.now() - (1000 * 60 * 60 * 24 * this.meta.remoteNotesCleaningExpiryDaysForEachNotes));
let cursor = '0'; // oldest note ID to start from
while (true) {
//#region check time
const batchBeginAt = Date.now();
const elapsed = batchBeginAt - startAt;
if (elapsed >= maxDuration) {
this.logger.info(`Reached maximum duration of ${maxDuration}ms, stopping...`);
job.log('Reached maximum duration, stopping cleaning.');
job.updateProgress(100);
break;
}
job.updateProgress((elapsed / maxDuration) * 100);
//#endregion
// First, we fetch the initiator notes that are older than the newestLimit.
const initiatorNotes: { id: MiNote['id'] }[] = await initiatorQuery.setParameters({ cursor, newestLimit }).getRawMany();
// update the cursor to the newest initiatorId found in the fetched notes.
const newCursor = initiatorNotes.reduce((max, note) => note.id > max ? note.id : max, cursor);
if (initiatorNotes.length === 0 || cursor === newCursor || newCursor >= newestLimit) {
// If no notes were found or the cursor did not change, we can stop.
job.log('No more notes to clean. (no initiator notes found or cursor did not change.)');
break;
}
const notes: { id: MiNote['id'], initiatorId: MiNote['id'] }[] = await notesQuery.setParameters({
initiatorIds: initiatorNotes.map(note => note.id),
newestLimit,
}).getRawMany();
cursor = newCursor;
if (notes.length > 0) {
await this.notesRepository.delete(notes.map(note => note.id));
for (const { id } of notes) {
const t = this.idService.parse(id).date.getTime();
if (stats.oldest === null || t < stats.oldest) {
stats.oldest = t;
}
if (stats.newest === null || t > stats.newest) {
stats.newest = t;
}
}
stats.deletedCount += notes.length;
}
job.log(`Deleted ${notes.length} from ${initiatorNotes.length} initiators; ${Date.now() - batchBeginAt}ms`);
if (initiatorNotes.length < MAX_NOTE_COUNT_PER_QUERY) {
// If we fetched less than the maximum, it means there are no more notes to process.
job.log(`No more notes to clean. (fewer than MAX_NOTE_COUNT_PER_QUERY =${MAX_NOTE_COUNT_PER_QUERY}.)`);
break;
}
await setTimeout(1000 * 5); // Wait a moment to avoid overwhelming the db
}
this.logger.succ('cleaning of remote notes completed.');
return {
deletedCount: stats.deletedCount,
oldest: stats.oldest,
newest: stats.newest,
skipped: false,
};
}
}
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