code-server/src/node/app/health.ts

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import * as http from "http"
import { HttpCode, HttpError } from "../../common/http"
import { HttpProvider, HttpResponse, Route, Heart, HttpProviderOptions } from "../http"
/**
* Check the heartbeat.
*/
export class HealthHttpProvider extends HttpProvider {
public constructor(options: HttpProviderOptions, private readonly heart: Heart) {
super(options)
}
public async handleRequest(route: Route, request: http.IncomingMessage): Promise<HttpResponse> {
if (!this.authenticated(request)) {
if (this.isRoot(route)) {
return { redirect: "/login", query: { to: route.fullPath } }
}
throw new HttpError("Unauthorized", HttpCode.Unauthorized)
}
const result = {
cache: false,
mime: "application/json",
content: {
status: this.heart.alive() ? "alive" : "expired",
lastHeartbeat: this.heart.lastHeartbeat,
},
}
return result
}
}