refactor: temporary files (#8713)

* simplify temporary files for thumbnails

Because only a single file will be written to the directory, creating a
separate directory seems unnecessary. If only a temporary file is created,
the code from `createTemp` can be reused here as well.

* refactor: deduplicate code for temporary files/directories

To follow the DRY principle, the same code should not be duplicated
across different files. Instead an already existing function is used.

Because temporary directories are also create in multiple locations,
a function for this is also newly added to reduce duplication.

* fix: clean up identicon temp files

The temporary files for identicons are not reused and can be deleted
after they are fully read. This condition is met when the stream is closed
and so the file can be cleaned up using the events API of the stream.

* fix: ensure cleanup is called when download fails

* fix: ensure cleanup is called in error conditions

This covers import/export queue jobs and is mostly just wrapping all
code in a try...finally statement where the finally runs the cleanup.

* fix: use correct type instead of `any`

packages/backend/src/misc/create-temp.ts

@@ -1,10 +1,19 @@
 import * as tmp from 'tmp';
 
-export function createTemp(): Promise<[string, any]> {
-	return new Promise<[string, any]>((res, rej) => {
+export function createTemp(): Promise<[string, () => void]> {
+	return new Promise<[string, () => void]>((res, rej) => {
 		tmp.file((e, path, fd, cleanup) => {
 			if (e) return rej(e);
 			res([path, cleanup]);
 		});
 	});
 }
+
+export function createTempDir(): Promise<[string, () => void]> {
+	return new Promise<[string, () => void]>((res, rej) => {
+		tmp.dir((e, path, cleanup) => {
+			if (e) return rej(e);
+			res([path, cleanup]);
+		});
+	});
+}

packages/backend/src/queue/processors/db/export-blocking.ts

@@ -1,11 +1,11 @@
 import Bull from 'bull';
-import * as tmp from 'tmp';
 import * as fs from 'node:fs';
 
 import { queueLogger } from '../../logger.js';
 import { addFile } from '@/services/drive/add-file.js';
 import { format as dateFormat } from 'date-fns';
 import { getFullApAccount } from '@/misc/convert-host.js';
+import { createTemp } from '@/misc/create-temp.js';
 import { Users, Blockings } from '@/models/index.js';
 import { MoreThan } from 'typeorm';
 import { DbUserJobData } from '@/queue/types.js';
@@ -22,73 +22,72 @@ export async function exportBlocking(job: Bull.Job<DbUserJobData>, done: any): P
 	}
 
 	// Create temp file
-	const [path, cleanup] = await new Promise<[string, any]>((res, rej) => {
-		tmp.file((e, path, fd, cleanup) => {
-			if (e) return rej(e);
-			res([path, cleanup]);
-		});
-	});
+	const [path, cleanup] = await createTemp();
 
 	logger.info(`Temp file is ${path}`);
 
-	const stream = fs.createWriteStream(path, { flags: 'a' });
+	try {
+		const stream = fs.createWriteStream(path, { flags: 'a' });
 
-	let exportedCount = 0;
-	let cursor: any = null;
+		let exportedCount = 0;
+		let cursor: any = null;
 
-	while (true) {
-		const blockings = await Blockings.find({
-			where: {
-				blockerId: user.id,
-				...(cursor ? { id: MoreThan(cursor) } : {}),
-			},
-			take: 100,
-			order: {
-				id: 1,
-			},
-		});
+		while (true) {
+			const blockings = await Blockings.find({
+				where: {
+					blockerId: user.id,
+					...(cursor ? { id: MoreThan(cursor) } : {}),
+				},
+				take: 100,
+				order: {
+					id: 1,
+				},
+			});
 
-		if (blockings.length === 0) {
-			job.progress(100);
-			break;
-		}
-
-		cursor = blockings[blockings.length - 1].id;
-
-		for (const block of blockings) {
-			const u = await Users.findOneBy({ id: block.blockeeId });
-			if (u == null) {
-				exportedCount++; continue;
+			if (blockings.length === 0) {
+				job.progress(100);
+				break;
 			}
 
-			const content = getFullApAccount(u.username, u.host);
-			await new Promise<void>((res, rej) => {
-				stream.write(content + '\n', err => {
-					if (err) {
-						logger.error(err);
-						rej(err);
-					} else {
-						res();
-					}
+			cursor = blockings[blockings.length - 1].id;
+
+			for (const block of blockings) {
+				const u = await Users.findOneBy({ id: block.blockeeId });
+				if (u == null) {
+					exportedCount++; continue;
+				}
+
+				const content = getFullApAccount(u.username, u.host);
+				await new Promise<void>((res, rej) => {
+					stream.write(content + '\n', err => {
+						if (err) {
+							logger.error(err);
+							rej(err);
+						} else {
+							res();
+						}
+					});
 				});
+				exportedCount++;
+			}
+
+			const total = await Blockings.countBy({
+				blockerId: user.id,
 			});
-			exportedCount++;
+
+			job.progress(exportedCount / total);
 		}
 
-		const total = await Blockings.countBy({
-			blockerId: user.id,
-		});
+		stream.end();
+		logger.succ(`Exported to: ${path}`);
 
-		job.progress(exportedCount / total);
+		const fileName = 'blocking-' + dateFormat(new Date(), 'yyyy-MM-dd-HH-mm-ss') + '.csv';
+		const driveFile = await addFile({ user, path, name: fileName, force: true });
+
+		logger.succ(`Exported to: ${driveFile.id}`);
+	} finally {
+		cleanup();
 	}
 
-	stream.end();
-	logger.succ(`Exported to: ${path}`);
-
-	const fileName = 'blocking-' + dateFormat(new Date(), 'yyyy-MM-dd-HH-mm-ss') + '.csv';
-	const driveFile = await addFile({ user, path, name: fileName, force: true });
-
-	logger.succ(`Exported to: ${driveFile.id}`);
-	cleanup();
 	done();
 }

packages/backend/src/queue/processors/db/export-custom-emojis.ts

@@ -1,5 +1,4 @@
 import Bull from 'bull';
-import * as tmp from 'tmp';
 import * as fs from 'node:fs';
 
 import { ulid } from 'ulid';
@@ -10,6 +9,7 @@ import { addFile } from '@/services/drive/add-file.js';
 import { format as dateFormat } from 'date-fns';
 import { Users, Emojis } from '@/models/index.js';
 import {  } from '@/queue/types.js';
+import { createTempDir } from '@/misc/create-temp.js';
 import { downloadUrl } from '@/misc/download-url.js';
 import config from '@/config/index.js';
 import { IsNull } from 'typeorm';
@@ -25,13 +25,7 @@ export async function exportCustomEmojis(job: Bull.Job, done: () => void): Promi
 		return;
 	}
 
-	// Create temp dir
-	const [path, cleanup] = await new Promise<[string, () => void]>((res, rej) => {
-		tmp.dir((e, path, cleanup) => {
-			if (e) return rej(e);
-			res([path, cleanup]);
-		});
-	});
+	const [path, cleanup] = await createTempDir();
 
 	logger.info(`Temp dir is ${path}`);
 
@@ -98,12 +92,7 @@ export async function exportCustomEmojis(job: Bull.Job, done: () => void): Promi
 	metaStream.end();
 
 	// Create archive
-	const [archivePath, archiveCleanup] = await new Promise<[string, () => void]>((res, rej) => {
-		tmp.file((e, path, fd, cleanup) => {
-			if (e) return rej(e);
-			res([path, cleanup]);
-		});
-	});
+	const [archivePath, archiveCleanup] = await createTemp();
 	const archiveStream = fs.createWriteStream(archivePath);
 	const archive = archiver('zip', {
 		zlib: { level: 0 },

packages/backend/src/queue/processors/db/export-following.ts

@@ -1,11 +1,11 @@
 import Bull from 'bull';
-import * as tmp from 'tmp';
 import * as fs from 'node:fs';
 
 import { queueLogger } from '../../logger.js';
 import { addFile } from '@/services/drive/add-file.js';
 import { format as dateFormat } from 'date-fns';
 import { getFullApAccount } from '@/misc/convert-host.js';
+import { createTemp } from '@/misc/create-temp.js';
 import { Users, Followings, Mutings } from '@/models/index.js';
 import { In, MoreThan, Not } from 'typeorm';
 import { DbUserJobData } from '@/queue/types.js';
@@ -23,73 +23,72 @@ export async function exportFollowing(job: Bull.Job<DbUserJobData>, done: () =>
 	}
 
 	// Create temp file
-	const [path, cleanup] = await new Promise<[string, () => void]>((res, rej) => {
-		tmp.file((e, path, fd, cleanup) => {
-			if (e) return rej(e);
-			res([path, cleanup]);
-		});
-	});
+	const [path, cleanup] = await createTemp();
 
 	logger.info(`Temp file is ${path}`);
 
-	const stream = fs.createWriteStream(path, { flags: 'a' });
+	try {
+		const stream = fs.createWriteStream(path, { flags: 'a' });
 
-	let cursor: Following['id'] | null = null;
+		let cursor: Following['id'] | null = null;
 
-	const mutings = job.data.excludeMuting ? await Mutings.findBy({
-		muterId: user.id,
-	}) : [];
+		const mutings = job.data.excludeMuting ? await Mutings.findBy({
+			muterId: user.id,
+		}) : [];
 
-	while (true) {
-		const followings = await Followings.find({
-			where: {
-				followerId: user.id,
-				...(mutings.length > 0 ? { followeeId: Not(In(mutings.map(x => x.muteeId))) } : {}),
-				...(cursor ? { id: MoreThan(cursor) } : {}),
-			},
-			take: 100,
-			order: {
-				id: 1,
-			},
-		}) as Following[];
+		while (true) {
+			const followings = await Followings.find({
+				where: {
+					followerId: user.id,
+					...(mutings.length > 0 ? { followeeId: Not(In(mutings.map(x => x.muteeId))) } : {}),
+					...(cursor ? { id: MoreThan(cursor) } : {}),
+				},
+				take: 100,
+				order: {
+					id: 1,
+				},
+			}) as Following[];
 
-		if (followings.length === 0) {
-			break;
-		}
-
-		cursor = followings[followings.length - 1].id;
-
-		for (const following of followings) {
-			const u = await Users.findOneBy({ id: following.followeeId });
-			if (u == null) {
-				continue;
+			if (followings.length === 0) {
+				break;
 			}
 
-			if (job.data.excludeInactive && u.updatedAt && (Date.now() - u.updatedAt.getTime() > 1000 * 60 * 60 * 24 * 90)) {
-				continue;
-			}
+			cursor = followings[followings.length - 1].id;
 
-			const content = getFullApAccount(u.username, u.host);
-			await new Promise<void>((res, rej) => {
-				stream.write(content + '\n', err => {
-					if (err) {
-						logger.error(err);
-						rej(err);
-					} else {
-						res();
-					}
+			for (const following of followings) {
+				const u = await Users.findOneBy({ id: following.followeeId });
+				if (u == null) {
+					continue;
+				}
+
+				if (job.data.excludeInactive && u.updatedAt && (Date.now() - u.updatedAt.getTime() > 1000 * 60 * 60 * 24 * 90)) {
+					continue;
+				}
+
+				const content = getFullApAccount(u.username, u.host);
+				await new Promise<void>((res, rej) => {
+					stream.write(content + '\n', err => {
+						if (err) {
+							logger.error(err);
+							rej(err);
+						} else {
+							res();
+						}
+					});
 				});
-			});
+			}
 		}
+
+		stream.end();
+		logger.succ(`Exported to: ${path}`);
+
+		const fileName = 'following-' + dateFormat(new Date(), 'yyyy-MM-dd-HH-mm-ss') + '.csv';
+		const driveFile = await addFile({ user, path, name: fileName, force: true });
+
+		logger.succ(`Exported to: ${driveFile.id}`);
+	} finally {
+		cleanup();
 	}
 
-	stream.end();
-	logger.succ(`Exported to: ${path}`);
-
-	const fileName = 'following-' + dateFormat(new Date(), 'yyyy-MM-dd-HH-mm-ss') + '.csv';
-	const driveFile = await addFile({ user, path, name: fileName, force: true });
-
-	logger.succ(`Exported to: ${driveFile.id}`);
-	cleanup();
 	done();
 }

packages/backend/src/queue/processors/db/export-mute.ts

@@ -1,11 +1,11 @@
 import Bull from 'bull';
-import * as tmp from 'tmp';
 import * as fs from 'node:fs';
 
 import { queueLogger } from '../../logger.js';
 import { addFile } from '@/services/drive/add-file.js';
 import { format as dateFormat } from 'date-fns';
 import { getFullApAccount } from '@/misc/convert-host.js';
+import { createTemp } from '@/misc/create-temp.js';
 import { Users, Mutings } from '@/models/index.js';
 import { IsNull, MoreThan } from 'typeorm';
 import { DbUserJobData } from '@/queue/types.js';
@@ -22,74 +22,73 @@ export async function exportMute(job: Bull.Job<DbUserJobData>, done: any): Promi
 	}
 
 	// Create temp file
-	const [path, cleanup] = await new Promise<[string, any]>((res, rej) => {
-		tmp.file((e, path, fd, cleanup) => {
-			if (e) return rej(e);
-			res([path, cleanup]);
-		});
-	});
+	const [path, cleanup] = await createTemp();
 
 	logger.info(`Temp file is ${path}`);
 
-	const stream = fs.createWriteStream(path, { flags: 'a' });
+	try {
+		const stream = fs.createWriteStream(path, { flags: 'a' });
 
-	let exportedCount = 0;
-	let cursor: any = null;
+		let exportedCount = 0;
+		let cursor: any = null;
 
-	while (true) {
-		const mutes = await Mutings.find({
-			where: {
-				muterId: user.id,
-				expiresAt: IsNull(),
-				...(cursor ? { id: MoreThan(cursor) } : {}),
-			},
-			take: 100,
-			order: {
-				id: 1,
-			},
-		});
+		while (true) {
+			const mutes = await Mutings.find({
+				where: {
+					muterId: user.id,
+					expiresAt: IsNull(),
+					...(cursor ? { id: MoreThan(cursor) } : {}),
+				},
+				take: 100,
+				order: {
+					id: 1,
+				},
+			});
 
-		if (mutes.length === 0) {
-			job.progress(100);
-			break;
-		}
-
-		cursor = mutes[mutes.length - 1].id;
-
-		for (const mute of mutes) {
-			const u = await Users.findOneBy({ id: mute.muteeId });
-			if (u == null) {
-				exportedCount++; continue;
+			if (mutes.length === 0) {
+				job.progress(100);
+				break;
 			}
 
-			const content = getFullApAccount(u.username, u.host);
-			await new Promise<void>((res, rej) => {
-				stream.write(content + '\n', err => {
-					if (err) {
-						logger.error(err);
-						rej(err);
-					} else {
-						res();
-					}
+			cursor = mutes[mutes.length - 1].id;
+
+			for (const mute of mutes) {
+				const u = await Users.findOneBy({ id: mute.muteeId });
+				if (u == null) {
+					exportedCount++; continue;
+				}
+
+				const content = getFullApAccount(u.username, u.host);
+				await new Promise<void>((res, rej) => {
+					stream.write(content + '\n', err => {
+						if (err) {
+							logger.error(err);
+							rej(err);
+						} else {
+							res();
+						}
+					});
 				});
+				exportedCount++;
+			}
+
+			const total = await Mutings.countBy({
+				muterId: user.id,
 			});
-			exportedCount++;
+
+			job.progress(exportedCount / total);
 		}
 
-		const total = await Mutings.countBy({
-			muterId: user.id,
-		});
+		stream.end();
+		logger.succ(`Exported to: ${path}`);
 
-		job.progress(exportedCount / total);
+		const fileName = 'mute-' + dateFormat(new Date(), 'yyyy-MM-dd-HH-mm-ss') + '.csv';
+		const driveFile = await addFile({ user, path, name: fileName, force: true });
+
+		logger.succ(`Exported to: ${driveFile.id}`);
+	} finally {
+		cleanup();
 	}
 
-	stream.end();
-	logger.succ(`Exported to: ${path}`);
-
-	const fileName = 'mute-' + dateFormat(new Date(), 'yyyy-MM-dd-HH-mm-ss') + '.csv';
-	const driveFile = await addFile({ user, path, name: fileName, force: true });
-
-	logger.succ(`Exported to: ${driveFile.id}`);
-	cleanup();
 	done();
 }

packages/backend/src/queue/processors/db/export-notes.ts

@@ -1,5 +1,4 @@
 import Bull from 'bull';
-import * as tmp from 'tmp';
 import * as fs from 'node:fs';
 
 import { queueLogger } from '../../logger.js';
@@ -10,6 +9,7 @@ import { MoreThan } from 'typeorm';
 import { Note } from '@/models/entities/note.js';
 import { Poll } from '@/models/entities/poll.js';
 import { DbUserJobData } from '@/queue/types.js';
+import { createTemp } from '@/misc/create-temp.js';
 
 const logger = queueLogger.createSubLogger('export-notes');
 
@@ -23,82 +23,81 @@ export async function exportNotes(job: Bull.Job<DbUserJobData>, done: any): Prom
 	}
 
 	// Create temp file
-	const [path, cleanup] = await new Promise<[string, any]>((res, rej) => {
-		tmp.file((e, path, fd, cleanup) => {
-			if (e) return rej(e);
-			res([path, cleanup]);
-		});
-	});
+	const [path, cleanup] = await createTemp();
 
 	logger.info(`Temp file is ${path}`);
 
-	const stream = fs.createWriteStream(path, { flags: 'a' });
+	try {
+		const stream = fs.createWriteStream(path, { flags: 'a' });
 
-	const write = (text: string): Promise<void> => {
-		return new Promise<void>((res, rej) => {
-			stream.write(text, err => {
-				if (err) {
-					logger.error(err);
-					rej(err);
-				} else {
-					res();
-				}
+		const write = (text: string): Promise<void> => {
+			return new Promise<void>((res, rej) => {
+				stream.write(text, err => {
+					if (err) {
+						logger.error(err);
+						rej(err);
+					} else {
+						res();
+					}
+				});
 			});
-		});
-	};
+		};
 
-	await write('[');
+		await write('[');
 
-	let exportedNotesCount = 0;
-	let cursor: Note['id'] | null = null;
+		let exportedNotesCount = 0;
+		let cursor: Note['id'] | null = null;
 
-	while (true) {
-		const notes = await Notes.find({
-			where: {
-				userId: user.id,
-				...(cursor ? { id: MoreThan(cursor) } : {}),
-			},
-			take: 100,
-			order: {
-				id: 1,
-			},
-		}) as Note[];
+		while (true) {
+			const notes = await Notes.find({
+				where: {
+					userId: user.id,
+					...(cursor ? { id: MoreThan(cursor) } : {}),
+				},
+				take: 100,
+				order: {
+					id: 1,
+				},
+			}) as Note[];
 
-		if (notes.length === 0) {
-			job.progress(100);
-			break;
-		}
-
-		cursor = notes[notes.length - 1].id;
-
-		for (const note of notes) {
-			let poll: Poll | undefined;
-			if (note.hasPoll) {
-				poll = await Polls.findOneByOrFail({ noteId: note.id });
+			if (notes.length === 0) {
+				job.progress(100);
+				break;
 			}
-			const content = JSON.stringify(serialize(note, poll));
-			const isFirst = exportedNotesCount === 0;
-			await write(isFirst ? content : ',\n' + content);
-			exportedNotesCount++;
+
+			cursor = notes[notes.length - 1].id;
+
+			for (const note of notes) {
+				let poll: Poll | undefined;
+				if (note.hasPoll) {
+					poll = await Polls.findOneByOrFail({ noteId: note.id });
+				}
+				const content = JSON.stringify(serialize(note, poll));
+				const isFirst = exportedNotesCount === 0;
+				await write(isFirst ? content : ',\n' + content);
+				exportedNotesCount++;
+			}
+
+			const total = await Notes.countBy({
+				userId: user.id,
+			});
+
+			job.progress(exportedNotesCount / total);
 		}
 
-		const total = await Notes.countBy({
-			userId: user.id,
-		});
+		await write(']');
 
-		job.progress(exportedNotesCount / total);
+		stream.end();
+		logger.succ(`Exported to: ${path}`);
+
+		const fileName = 'notes-' + dateFormat(new Date(), 'yyyy-MM-dd-HH-mm-ss') + '.json';
+		const driveFile = await addFile({ user, path, name: fileName, force: true });
+
+		logger.succ(`Exported to: ${driveFile.id}`);
+	} finally {
+		cleanup();
 	}
 
-	await write(']');
-
-	stream.end();
-	logger.succ(`Exported to: ${path}`);
-
-	const fileName = 'notes-' + dateFormat(new Date(), 'yyyy-MM-dd-HH-mm-ss') + '.json';
-	const driveFile = await addFile({ user, path, name: fileName, force: true });
-
-	logger.succ(`Exported to: ${driveFile.id}`);
-	cleanup();
 	done();
 }
 

packages/backend/src/queue/processors/db/export-user-lists.ts

@@ -1,11 +1,11 @@
 import Bull from 'bull';
-import * as tmp from 'tmp';
 import * as fs from 'node:fs';
 
 import { queueLogger } from '../../logger.js';
 import { addFile } from '@/services/drive/add-file.js';
 import { format as dateFormat } from 'date-fns';
 import { getFullApAccount } from '@/misc/convert-host.js';
+import { createTemp } from '@/misc/create-temp.js';
 import { Users, UserLists, UserListJoinings } from '@/models/index.js';
 import { In } from 'typeorm';
 import { DbUserJobData } from '@/queue/types.js';
@@ -26,46 +26,45 @@ export async function exportUserLists(job: Bull.Job<DbUserJobData>, done: any):
 	});
 
 	// Create temp file
-	const [path, cleanup] = await new Promise<[string, any]>((res, rej) => {
-		tmp.file((e, path, fd, cleanup) => {
-			if (e) return rej(e);
-			res([path, cleanup]);
-		});
-	});
+	const [path, cleanup] = await createTemp();
 
 	logger.info(`Temp file is ${path}`);
 
-	const stream = fs.createWriteStream(path, { flags: 'a' });
+	try {
+		const stream = fs.createWriteStream(path, { flags: 'a' });
 
-	for (const list of lists) {
-		const joinings = await UserListJoinings.findBy({ userListId: list.id });
-		const users = await Users.findBy({
-			id: In(joinings.map(j => j.userId)),
-		});
-
-		for (const u of users) {
-			const acct = getFullApAccount(u.username, u.host);
-			const content = `${list.name},${acct}`;
-			await new Promise<void>((res, rej) => {
-				stream.write(content + '\n', err => {
-					if (err) {
-						logger.error(err);
-						rej(err);
-					} else {
-						res();
-					}
-				});
+		for (const list of lists) {
+			const joinings = await UserListJoinings.findBy({ userListId: list.id });
+			const users = await Users.findBy({
+				id: In(joinings.map(j => j.userId)),
 			});
+
+			for (const u of users) {
+				const acct = getFullApAccount(u.username, u.host);
+				const content = `${list.name},${acct}`;
+				await new Promise<void>((res, rej) => {
+					stream.write(content + '\n', err => {
+						if (err) {
+							logger.error(err);
+							rej(err);
+						} else {
+							res();
+						}
+					});
+				});
+			}
 		}
+
+		stream.end();
+		logger.succ(`Exported to: ${path}`);
+
+		const fileName = 'user-lists-' + dateFormat(new Date(), 'yyyy-MM-dd-HH-mm-ss') + '.csv';
+		const driveFile = await addFile({ user, path, name: fileName, force: true });
+
+		logger.succ(`Exported to: ${driveFile.id}`);
+	} finally {
+		cleanup();
 	}
 
-	stream.end();
-	logger.succ(`Exported to: ${path}`);
-
-	const fileName = 'user-lists-' + dateFormat(new Date(), 'yyyy-MM-dd-HH-mm-ss') + '.csv';
-	const driveFile = await addFile({ user, path, name: fileName, force: true });
-
-	logger.succ(`Exported to: ${driveFile.id}`);
-	cleanup();
 	done();
 }

packages/backend/src/queue/processors/db/import-custom-emojis.ts

@@ -1,9 +1,9 @@
 import Bull from 'bull';
-import * as tmp from 'tmp';
 import * as fs from 'node:fs';
 import unzipper from 'unzipper';
 
 import { queueLogger } from '../../logger.js';
+import { createTempDir } from '@/misc/create-temp.js';
 import { downloadUrl } from '@/misc/download-url.js';
 import { DriveFiles, Emojis } from '@/models/index.js';
 import { DbUserImportJobData } from '@/queue/types.js';
@@ -25,13 +25,7 @@ export async function importCustomEmojis(job: Bull.Job<DbUserImportJobData>, don
 		return;
 	}
 
-	// Create temp dir
-	const [path, cleanup] = await new Promise<[string, () => void]>((res, rej) => {
-		tmp.dir((e, path, cleanup) => {
-			if (e) return rej(e);
-			res([path, cleanup]);
-		});
-	});
+	const [path, cleanup] = await createTempDir();
 
 	logger.info(`Temp dir is ${path}`);
 

packages/backend/src/server/file/send-drive-file.ts

@@ -4,11 +4,11 @@ import { dirname } from 'node:path';
 import Koa from 'koa';
 import send from 'koa-send';
 import rename from 'rename';
-import * as tmp from 'tmp';
 import { serverLogger } from '../index.js';
 import { contentDisposition } from '@/misc/content-disposition.js';
 import { DriveFiles } from '@/models/index.js';
 import { InternalStorage } from '@/services/drive/internal-storage.js';
+import { createTemp } from '@/misc/create-temp.js';
 import { downloadUrl } from '@/misc/download-url.js';
 import { detectType } from '@/misc/get-file-info.js';
 import { convertToWebp, convertToJpeg, convertToPng } from '@/services/drive/image-processor.js';
@@ -50,12 +50,7 @@ export default async function(ctx: Koa.Context) {
 
 	if (!file.storedInternal) {
 		if (file.isLink && file.uri) {	// 期限切れリモートファイル
-			const [path, cleanup] = await new Promise<[string, any]>((res, rej) => {
-				tmp.file((e, path, fd, cleanup) => {
-					if (e) return rej(e);
-					res([path, cleanup]);
-				});
-			});
+			const [path, cleanup] = await createTemp();
 
 			try {
 				await downloadUrl(file.uri, path);

packages/backend/src/server/index.ts

@@ -89,10 +89,10 @@ router.get('/avatar/@:acct', async ctx => {
 });
 
 router.get('/identicon/:x', async ctx => {
-	const [temp] = await createTemp();
+	const [temp, cleanup] = await createTemp();
 	await genIdenticon(ctx.params.x, fs.createWriteStream(temp));
 	ctx.set('Content-Type', 'image/png');
-	ctx.body = fs.createReadStream(temp);
+	ctx.body = fs.createReadStream(temp).on('close', () => cleanup());
 });
 
 router.get('/verify-email/:code', async ctx => {

packages/backend/src/services/drive/generate-video-thumbnail.ts

@@ -1,38 +1,31 @@
 import * as fs from 'node:fs';
-import * as tmp from 'tmp';
+import * as path from 'node:path';
+import { createTemp } from '@/misc/create-temp.js';
 import { IImage, convertToJpeg } from './image-processor.js';
 import FFmpeg from 'fluent-ffmpeg';
 
-export async function GenerateVideoThumbnail(path: string): Promise<IImage> {
-	const [outDir, cleanup] = await new Promise<[string, any]>((res, rej) => {
-		tmp.dir((e, path, cleanup) => {
-			if (e) return rej(e);
-			res([path, cleanup]);
+export async function GenerateVideoThumbnail(source: string): Promise<IImage> {
+	const [file, cleanup] = await createTemp();
+	const parsed = path.parse(file);
+
+	try {
+		await new Promise((res, rej) => {
+			FFmpeg({
+				source,
+			})
+			.on('end', res)
+			.on('error', rej)
+			.screenshot({
+				folder: parsed.dir,
+				filename: parsed.base,
+				count: 1,
+				timestamps: ['5%'],
+			});
 		});
-	});
 
-	await new Promise((res, rej) => {
-		FFmpeg({
-			source: path,
-		})
-		.on('end', res)
-		.on('error', rej)
-		.screenshot({
-			folder: outDir,
-			filename: 'output.png',
-			count: 1,
-			timestamps: ['5%'],
-		});
-	});
-
-	const outPath = `${outDir}/output.png`;
-
-	// JPEGに変換 (Webpでもいいが、MastodonはWebpをサポートせず表示できなくなる)
-	const thumbnail = await convertToJpeg(outPath, 498, 280);
-
-	// cleanup
-	await fs.promises.unlink(outPath);
-	cleanup();
-
-	return thumbnail;
+		// JPEGに変換 (Webpでもいいが、MastodonはWebpをサポートせず表示できなくなる)
+		return await convertToJpeg(498, 280);
+	} finally {
+		cleanup();
+	}
 }

packages/backend/src/services/drive/upload-from-url.ts

@@ -45,29 +45,20 @@ export async function uploadFromUrl({
 	// Create temp file
 	const [path, cleanup] = await createTemp();
 
-	// write content at URL to temp file
-	await downloadUrl(url, path);
-
-	let driveFile: DriveFile;
-	let error;
-
 	try {
-		driveFile = await addFile({ user, path, name, comment, folderId, force, isLink, url, uri, sensitive });
+		// write content at URL to temp file
+		await downloadUrl(url, path);
+
+		const driveFile = await addFile({ user, path, name, comment, folderId, force, isLink, url, uri, sensitive });
 		logger.succ(`Got: ${driveFile.id}`);
+		return driveFile!;
 	} catch (e) {
-		error = e;
 		logger.error(`Failed to create drive file: ${e}`, {
 			url: url,
 			e: e,
 		});
-	}
-
-	// clean-up
-	cleanup();
-
-	if (error) {
-		throw error;
-	} else {
-		return driveFile!;
+		throw e;
+	} finally {
+		cleanup();
 	}
 }