misskey/src/services/drive/delete-file.ts

import * as Minio from 'minio';
import config from '../../config';
import { DriveFile } from '../../models/entities/drive-file';
import { InternalStorage } from './internal-storage';
import { DriveFiles, Instances, Notes } from '../../models';
import { driveChart, perUserDriveChart, instanceChart } from '../chart';

export default async function(file: DriveFile, isExpired = false) {
	if (file.storedInternal) {
		InternalStorage.del(file.accessKey!);

		if (file.thumbnailUrl) {
			InternalStorage.del(file.thumbnailAccessKey!);
		}

		if (file.webpublicUrl) {
			InternalStorage.del(file.webpublicAccessKey!);
		}
	} else if (!file.isLink) {
		const minio = new Minio.Client(config.drive!.config);

		await minio.removeObject(config.drive!.bucket!, file.accessKey!);

		if (file.thumbnailUrl) {
			await minio.removeObject(config.drive!.bucket!, file.thumbnailAccessKey!);
		}

		if (file.webpublicUrl) {
			await minio.removeObject(config.drive!.bucket!, file.webpublicAccessKey!);
		}
	}

	// リモートファイル期限切れ削除後は直リンクにする
	if (isExpired && file.userHost !== null && file.uri != null) {
		DriveFiles.update(file.id, {
			isLink: true,
			url: file.uri,
			thumbnailUrl: null,
			webpublicUrl: null
		});
	} else {
		DriveFiles.delete(file.id);

		// TODO: トランザクション
		Notes.createQueryBuilder('note').delete()
			.andWhere(':id = ANY(note.fileIds)', { id: file.id })
			.execute();
	}

	// 統計を更新
	driveChart.update(file, false);
	perUserDriveChart.update(file, false);
	if (file.userHost !== null) {
		instanceChart.updateDrive(file, false);
		Instances.decrement({ host: file.userHost }, 'driveUsage', file.size);
		Instances.decrement({ host: file.userHost }, 'driveFiles', 1);
	}
}