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refactor: temporary files (#8713)

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* 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`
This commit is contained in:
Johann150 2022-05-25 09:50:22 +02:00 committed by GitHub
parent 7717535b63
commit c2ddc5286c
12 changed files with 307 additions and 341 deletions
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13
packages/backend/src/misc/create-temp.ts
View file

@ -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]);
});
});
}

13
packages/backend/src/queue/processors/db/export-blocking.ts
View file

@ -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';
@ -22,15 +22,11 @@ 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}`);
try {
const stream = fs.createWriteStream(path, { flags: 'a' });
let exportedCount = 0;
@ -89,6 +85,9 @@ export async function exportBlocking(job: Bull.Job<DbUserJobData>, done: any): P
const driveFile = await addFile({ user, path, name: fileName, force: true });
logger.succ(`Exported to: ${driveFile.id}`);
} finally {
cleanup();
}
done();
}

17
packages/backend/src/queue/processors/db/export-custom-emojis.ts
View file

@ -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 },

13
packages/backend/src/queue/processors/db/export-following.ts
View file

@ -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';
@ -23,15 +23,11 @@ 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}`);
try {
const stream = fs.createWriteStream(path, { flags: 'a' });
let cursor: Following['id'] | null = null;
@ -90,6 +86,9 @@ export async function exportFollowing(job: Bull.Job<DbUserJobData>, done: () =>
const driveFile = await addFile({ user, path, name: fileName, force: true });
logger.succ(`Exported to: ${driveFile.id}`);
} finally {
cleanup();
}
done();
}

13
packages/backend/src/queue/processors/db/export-mute.ts
View file

@ -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';
@ -22,15 +22,11 @@ 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}`);
try {
const stream = fs.createWriteStream(path, { flags: 'a' });
let exportedCount = 0;
@ -90,6 +86,9 @@ export async function exportMute(job: Bull.Job<DbUserJobData>, done: any): Promi
const driveFile = await addFile({ user, path, name: fileName, force: true });
logger.succ(`Exported to: ${driveFile.id}`);
} finally {
cleanup();
}
done();
}

13
packages/backend/src/queue/processors/db/export-notes.ts
View file

@ -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');
@ -23,15 +23,11 @@ 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}`);
try {
const stream = fs.createWriteStream(path, { flags: 'a' });
const write = (text: string): Promise<void> => {
@ -98,7 +94,10 @@ export async function exportNotes(job: Bull.Job<DbUserJobData>, done: any): Prom
const driveFile = await addFile({ user, path, name: fileName, force: true });
logger.succ(`Exported to: ${driveFile.id}`);
} finally {
cleanup();
}
done();
}

13
packages/backend/src/queue/processors/db/export-user-lists.ts
View file

@ -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';
@ -26,15 +26,11 @@ 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}`);
try {
const stream = fs.createWriteStream(path, { flags: 'a' });
for (const list of lists) {
@ -66,6 +62,9 @@ export async function exportUserLists(job: Bull.Job<DbUserJobData>, done: any):
const driveFile = await addFile({ user, path, name: fileName, force: true });
logger.succ(`Exported to: ${driveFile.id}`);
} finally {
cleanup();
}
done();
}

10
packages/backend/src/queue/processors/db/import-custom-emojis.ts
View file

@ -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}`);

9
packages/backend/src/server/file/send-drive-file.ts
View file

@ -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);

4
packages/backend/src/server/index.ts
View file

@ -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 => {

31
packages/backend/src/services/drive/generate-video-thumbnail.ts
View file

@ -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: path,
source,
})
.on('end', res)
.on('error', rej)
.screenshot({
folder: outDir,
filename: 'output.png',
folder: parsed.dir,
filename: parsed.base,
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);
return await convertToJpeg(498, 280);
} finally {
cleanup();
return thumbnail;
}
}

19
packages/backend/src/services/drive/upload-from-url.ts
View file

@ -45,29 +45,20 @@ export async function uploadFromUrl({
// Create temp file
const [path, cleanup] = await createTemp();
try {
// 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 });
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
throw e;
} finally {
cleanup();
if (error) {
throw error;
} else {
return driveFile!;
}
}