git: autofetch

extensions/git/src/autofetch.ts

@@ -0,0 +1,63 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+import { workspace, Disposable } from 'vscode';
+import { GitErrorCodes } from './git';
+import { Model } from './model';
+import { throttle } from './util';
+import { decorate } from 'core-decorators';
+
+export class AutoFetcher {
+
+	private static Period = 3 * 60 * 1000 /* three minutes */;
+	private disposables: Disposable[] = [];
+	private timer: NodeJS.Timer;
+
+	constructor(private model: Model) {
+		workspace.onDidChangeConfiguration(this.onConfiguration, this, this.disposables);
+		this.onConfiguration();
+	}
+
+	private onConfiguration(): void {
+		const gitConfig = workspace.getConfiguration('git');
+
+		if (gitConfig.get<boolean>('autofetch') === false) {
+			this.disable();
+		} else {
+			this.enable();
+		}
+	}
+
+	enable(): void {
+		if (this.timer) {
+			return;
+		}
+
+		this.fetch();
+		this.timer = setInterval(() => this.fetch(), AutoFetcher.Period);
+	}
+
+	disable(): void {
+		clearInterval(this.timer);
+	}
+
+	@decorate(throttle)
+	private async fetch(): Promise<void> {
+		try {
+			await this.model.fetch();
+		} catch (err) {
+			if (err.gitErrorCode === GitErrorCodes.AuthenticationFailed) {
+				this.disable();
+			}
+		}
+	}
+
+	dispose(): void {
+		this.disable();
+		this.disposables.forEach(d => d.dispose());
+	}
+}