Vihren Atlas

diskFileSystemProvider.ts ×9

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unlabeled · c_230d1f8cdb6a

6 tests · 15491 LOC · 68 files · introduces 0 tests · 73 LOC · 3 files

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17 ranges73 lines · 3 files
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0 tests

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2546 ranges15491 lines · 68 files · Browse complete extent
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3 files ranked by introduced lines: 73 introduced LOC across 17 ranges. Expand a file to inspect source; the > gutter marks introduced lines.

src/vs/platform/files/node/diskFileSystemProvider.ts 39 introduced LOC · 9 ranges

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244 async writeFile(resource: URI, content: Uint8Array, opts: IFileWriteOptions): Promise<void> {
245 if (opts?.atomic !== false && opts?.atomic?.postfix && await this.canWriteFileAtomic(resource)) {
246 > return this.doWriteFileAtomic(resource, joinPath(resourcesDirname(resource), `${resourcesBasename(resource)}${opts.atomic.postfix}`), content, opts); diskFileSystemProvider.ts
247 } else {
248 return this.doWriteFile(resource, content, opts);
251
252 private async canWriteFileAtomic(resource: URI): Promise<boolean> {
253 > try { diskFileSystemProvider.ts
254 > const filePath = this.toFilePath(resource);
255 > const { symbolicLink } = await SymlinkSupport.stat(filePath);
256 > if (symbolicLink) {
257 // atomic writes are unsupported for symbolic links because
258 // we need to ensure that the `rename` operation is atomic
262 return false;
263 }
264 > } catch (error) { diskFileSystemProvider.ts
265 // ignore stat errors here and just proceed trying to write
266 }
267 > diskFileSystemProvider.ts
268 > return true; // atomic writing supported
269 > }
270
271 private async doWriteFileAtomic(resource: URI, tempResource: URI, content: Uint8Array, opts: IFileWriteOptions): Promise<void> {
272 > diskFileSystemProvider.ts
273 > // Ensure to create locks for all resources involved
274 > // since atomic write involves mutiple disk operations
275 > // and resources.
276 >
277 > const locks = new DisposableStore();
278 >
279 > try {
280 > locks.add(await this.createResourceLock(resource));
281 > locks.add(await this.createResourceLock(tempResource));
282 >
283 > // Write to temp resource first
284 > await this.doWriteFile(tempResource, content, { ...opts, create: true, overwrite: true }, true /* disable write lock */);
285 >
286 > try {
287 >
288 > // Rename over existing to ensure atomic replace
289 > await this.rename(tempResource, resource, { overwrite: true });
290 >
291 > } catch (error) {
292
293 // Cleanup in case of rename error
300 throw error;
301 }
302 > } finally { diskFileSystemProvider.ts
303 > locks.dispose();
304 > }
305 > }
306
307 private async doWriteFile(resource: URI, content: Uint8Array, opts: IFileWriteOptions, disableWriteLock?: boolean): Promise<void> {
760 return; // target does not exist so we are good
761 }
762 > diskFileSystemProvider.ts
763 > if (!overwrite) {
764 throw createFileSystemProviderError(localize('fileMoveCopyErrorExists', "File at target already exists and thus will not be moved/copied to unless overwrite is specified"), FileSystemProviderErrorCode.FileExists);
765 }
766 > diskFileSystemProvider.ts
767 > // Handle existing target for move/copy
768 if ((fromStat.type & FileType.File) !== 0 && (toStat.type & FileType.File) !== 0) {
769 > return; // node.js can move/copy a file over an existing file without having to delete it first diskFileSystemProvider.ts
770 > } else {
771 await this.delete(to, { recursive: true, useTrash: false, atomic: false });
772 }
src/vs/platform/state/node/stateService.ts 28 introduced LOC · 4 ranges

Open complete file

43
44 init(): Promise<void> {
45 > if (!this.initializing) { stateService.ts
46 > this.initializing = this.doInit();
47 > }
48 >
49 > return this.initializing;
50 > }
51
52 private async doInit(): Promise<void> {
53 > try { stateService.ts
54 > this.lastSavedStorageContents = (await this.fileService.readFile(this.storagePath)).value.toString();
55 > this.storage = JSON.parse(this.lastSavedStorageContents);
56 > } catch (error) {
57 > if ((<FileOperationError>error).fileOperationResult !== FileOperationResult.FILE_NOT_FOUND) {
58 > this.logService.error(error);
59 > }
60 > }
61 > }
62
63 getItem<T>(key: string, defaultValue: T): T;
127 return; // if we never initialized, we should not save our state
128 }
129 > stateService.ts
130 > // Make sure to wait for init to finish first
131 > await this.initializing;
132 >
133 > // Return early if the database has not changed
134 > const serializedDatabase = JSON.stringify(this.storage, null, 4);
135 > if (serializedDatabase === this.lastSavedStorageContents) {
136 return;
137 }
138 > stateService.ts
139 > // Write to disk
140 > try {
141 > await this.fileService.writeFile(this.storagePath, VSBuffer.fromString(serializedDatabase), { atomic: { postfix: '.vsctmp' } });
142 > this.lastSavedStorageContents = serializedDatabase;
143 > } catch (error) {
144 this.logService.error(error);
145 }
src/vs/platform/files/common/fileService.ts 6 introduced LOC · 4 ranges

Open complete file

469 const atomic = !!options?.atomic;
470 if (atomic) {
471 > if (!(provider.capabilities & FileSystemProviderCapabilities.FileAtomicWrite)) { fileService.ts
472 throw new Error(localize('writeFailedAtomicUnsupported1', "Unable to atomically write file '{0}' because provider does not support it.", this.resourceForError(resource)));
473 }
474 > fileService.ts
475 > if (!(provider.capabilities & FileSystemProviderCapabilities.FileReadWrite)) {
476 throw new Error(localize('writeFailedAtomicUnsupported2', "Unable to atomically write file '{0}' because provider does not support unbuffered writes.", this.resourceForError(resource)));
477 }
478 > fileService.ts
479 > if (unlock) {
480 throw new Error(localize('writeFailedAtomicUnlock', "Unable to unlock file '{0}' because atomic write is enabled.", this.resourceForError(resource)));
481 }
482 > } fileService.ts
483
484 // Validate via file stat meta data

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