Log requests

src/hooks.server.ts

@@ -0,0 +1,45 @@
+import { log, timedExecution } from '$lib';
+import { validate, v7 as uuidv7 } from 'uuid';
+
+const requestIdHeader = 'x-request-id';
+
+/** @type {import('@sveltejs/kit').Handle} */
+export async function handle({ event, resolve }) {
+	// use incomming requestId, if it is a valid uuid, else generate one
+	const reqIdFromRequest = event.request.headers.get(requestIdHeader);
+	const { requestId, fromRequest } =
+		reqIdFromRequest && validate(reqIdFromRequest)
+			? { requestId: reqIdFromRequest, fromRequest: true }
+			: { requestId: uuidv7(), fromRequest: false };
+
+	var context = {
+		requestId,
+		route: event.route.id,
+		method: event.request.method,
+		userAgent: event.request.headers.get('user-agent'),
+		clientIP: event.getClientAddress()
+	};
+	if (fromRequest) {
+		log.trace(context, 'using incomming request-id');
+	}
+
+	// make requestId available to handlers
+	event.locals.requestId = requestId;
+
+	const { executionTime, result: response } = await timedExecution(async () => {
+		return await resolve(event);
+	});
+	response.headers.set(requestIdHeader, requestId);
+
+	log.info(
+		{
+			executionTime: `${executionTime}ms`,
+			status: response.status,
+			size: response.headers.get('content-length'),
+			...context
+		},
+		'finished request'
+	);
+
+	return response;
+}