Merge commit 'be3e8236086165e5e45a5a10783823874b3f3ebd' as 'lib/vscode'

lib/vscode/src/vs/platform/serviceMachineId/common/serviceMachineId.ts

@@ -0,0 +1,40 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { IFileService } from 'vs/platform/files/common/files';
+import { StorageScope } from 'vs/platform/storage/common/storage';
+import { IEnvironmentService } from 'vs/platform/environment/common/environment';
+import { isUUID, generateUuid } from 'vs/base/common/uuid';
+import { VSBuffer } from 'vs/base/common/buffer';
+
+export async function getServiceMachineId(environmentService: IEnvironmentService, fileService: IFileService, storageService: {
+	get: (key: string, scope: StorageScope, fallbackValue?: string | undefined) => string | undefined,
+	store: (key: string, value: string, scope: StorageScope) => void
+} | undefined): Promise<string> {
+	let uuid: string | null = storageService ? storageService.get('storage.serviceMachineId', StorageScope.GLOBAL) || null : null;
+	if (uuid) {
+		return uuid;
+	}
+	try {
+		const contents = await fileService.readFile(environmentService.serviceMachineIdResource);
+		const value = contents.value.toString();
+		uuid = isUUID(value) ? value : null;
+	} catch (e) {
+		uuid = null;
+	}
+
+	if (!uuid) {
+		uuid = generateUuid();
+		try {
+			await fileService.writeFile(environmentService.serviceMachineIdResource, VSBuffer.fromString(uuid));
+		} catch (error) {
+			//noop
+		}
+	}
+	if (storageService) {
+		storageService.store('storage.serviceMachineId', uuid, StorageScope.GLOBAL);
+	}
+	return uuid;
+}