Files
vscode/src/vs/code/electron-browser/sharedProcess/contrib/languagePackCachedDataCleaner.ts
2020-04-06 09:12:41 +02:00

106 lines
3.6 KiB
TypeScript

/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import * as path from 'vs/base/common/path';
import * as pfs from 'vs/base/node/pfs';
import { IStringDictionary } from 'vs/base/common/collections';
import product from 'vs/platform/product/common/product';
import { Disposable, toDisposable } from 'vs/base/common/lifecycle';
import { onUnexpectedError } from 'vs/base/common/errors';
import { ILogService } from 'vs/platform/log/common/log';
import { INativeEnvironmentService } from 'vs/platform/environment/node/environmentService';
import { IEnvironmentService } from 'vs/platform/environment/common/environment';
interface ExtensionEntry {
version: string;
extensionIdentifier: {
id: string;
uuid: string;
};
}
interface LanguagePackEntry {
hash: string;
extensions: ExtensionEntry[];
}
interface LanguagePackFile {
[locale: string]: LanguagePackEntry;
}
export class LanguagePackCachedDataCleaner extends Disposable {
constructor(
@IEnvironmentService private readonly _environmentService: INativeEnvironmentService,
@ILogService private readonly _logService: ILogService
) {
super();
// We have no Language pack support for dev version (run from source)
// So only cleanup when we have a build version.
if (this._environmentService.isBuilt) {
this._manageCachedDataSoon();
}
}
private _manageCachedDataSoon(): void {
let handle: any = setTimeout(async () => {
handle = undefined;
this._logService.info('Starting to clean up unused language packs.');
const maxAge = product.nameLong.indexOf('Insiders') >= 0
? 1000 * 60 * 60 * 24 * 7 // roughly 1 week
: 1000 * 60 * 60 * 24 * 30 * 3; // roughly 3 months
try {
const installed: IStringDictionary<boolean> = Object.create(null);
const metaData: LanguagePackFile = JSON.parse(await pfs.readFile(path.join(this._environmentService.userDataPath, 'languagepacks.json'), 'utf8'));
for (let locale of Object.keys(metaData)) {
const entry = metaData[locale];
installed[`${entry.hash}.${locale}`] = true;
}
// Cleanup entries for language packs that aren't installed anymore
const cacheDir = path.join(this._environmentService.userDataPath, 'clp');
const exists = await pfs.exists(cacheDir);
if (!exists) {
return;
}
for (let entry of await pfs.readdir(cacheDir)) {
if (installed[entry]) {
this._logService.info(`Skipping directory ${entry}. Language pack still in use.`);
continue;
}
this._logService.info('Removing unused language pack:', entry);
await pfs.rimraf(path.join(cacheDir, entry));
}
const now = Date.now();
for (let packEntry of Object.keys(installed)) {
const folder = path.join(cacheDir, packEntry);
for (let entry of await pfs.readdir(folder)) {
if (entry === 'tcf.json') {
continue;
}
const candidate = path.join(folder, entry);
const stat = await pfs.stat(candidate);
if (stat.isDirectory()) {
const diff = now - stat.mtime.getTime();
if (diff > maxAge) {
this._logService.info('Removing language pack cache entry: ', path.join(packEntry, entry));
await pfs.rimraf(candidate);
}
}
}
}
} catch (error) {
onUnexpectedError(error);
}
}, 40 * 1000);
this._register(toDisposable(() => {
if (handle !== undefined) {
clearTimeout(handle);
}
}));
}
}