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HTTP Response metrics

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Alex Gleason 2024-07-05 00:00:57 +01:00
parent d4713cae01
commit 96a8ccb2e6
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GPG key ID: 7211D1F99744FBB7
3 changed files with 18 additions and 9 deletions
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15
src/app.ts
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@ -152,18 +152,17 @@ if (Conf.cronEnabled) {
app.use('*', rateLimitMiddleware(300, Time.minutes(5)));
app.use('/api/*', logger(debug));
app.use('/.well-known/*', logger(debug));
app.use('/users/*', logger(debug));
app.use('/nodeinfo/*', logger(debug));
app.use('/oauth/*', logger(debug));
app.use('/api/*', metricsMiddleware, logger(debug));
app.use('/.well-known/*', metricsMiddleware, logger(debug));
app.use('/users/*', metricsMiddleware, logger(debug));
app.use('/nodeinfo/*', metricsMiddleware, logger(debug));
app.use('/oauth/*', metricsMiddleware, logger(debug));
app.get('/api/v1/streaming', streamingController);
app.get('/relay', relayController);
app.get('/api/v1/streaming', metricsMiddleware, streamingController);
app.get('/relay', metricsMiddleware, relayController);
app.use(
'*',
metricsMiddleware,
cspMiddleware(),
cors({ origin: '*', exposeHeaders: ['link'] }),
signerMiddleware,

6
src/metrics.ts
View file

@ -6,6 +6,12 @@ export const httpRequestCounter = new Counter({
labelNames: ['method'],
});
export const httpResponseCounter = new Counter({
name: 'http_responses_total',
help: 'Total number of HTTP responses',
labelNames: ['status', 'path'],
});
export const streamingConnectionsGauge = new Gauge({
name: 'streaming_connections',
help: 'Number of active connections to the streaming API',

6
src/middleware/metricsMiddleware.ts
View file

@ -1,10 +1,14 @@
import { MiddlewareHandler } from '@hono/hono';
import { httpRequestCounter } from '@/metrics.ts';
import { httpRequestCounter, httpResponseCounter } from '@/metrics.ts';
export const metricsMiddleware: MiddlewareHandler = async (c, next) => {
const { method } = c.req;
httpRequestCounter.inc({ method });
await next();
const { status } = c.res;
const path = c.req.matchedRoutes.find((r) => r.method !== 'ALL')?.path ?? c.req.routePath;
httpResponseCounter.inc({ status, path });
};