Monitoring GraphQL APIs

plugins: [{
  onExecute({ args }) {
    const start = performance.now();
    return {
      onExecuteDone({ result }) {
        logger.info({
          op: args.operationName,
          variables: args.variableValues,
          ms: performance.now() - start,
          errors: result.errors?.length ?? 0
        });
      }
    };
  }
}]

import { useOpenTelemetry } from "@envelop/opentelemetry";
import { trace } from "@opentelemetry/api";

plugins: [useOpenTelemetry({
  resolvers: true, variables: false, result: false
}, trace.getTracerProvider())]

app.get("/healthz", (_, res) => res.send("ok"));
app.get("/readyz", async (_, res) => {
  try {
    await Promise.all([db.$queryRaw`SELECT 1`, redis.ping()]);
    res.send("ready");
  } catch { res.status(503).send("not ready"); }
});

app.use((req, _, next) => {
  req.id = req.headers["x-request-id"] ?? randomUUID();
  next();
});

context: ({ req }) => ({ requestId: req.id, logger: logger.child({ requestId: req.id }) })