@unito/integration-sdk/dist/src/middlewares/finish.js

Integration SDK

import { default as Logger } from '../resources/logger.js';
function onFinish(req, res, next) {
    res.on('finish', function () {
        const logger = res.locals.logger ?? new Logger();
        const error = res.locals.error;
        const durationInNs = Number(process.hrtime.bigint() - res.locals.requestStartTime);
        const durationInMs = (durationInNs / 1_000_000) | 0;
        const message = `${req.method} ${req.originalUrl} ${res.statusCode} - ${durationInMs} ms`;
        const metadata = {
            duration: durationInNs,
            // Use reserved and standard attributes of Datadog
            // https://app.datadoghq.com/logs/pipelines/standard-attributes
            http: { method: req.method, status_code: res.statusCode, url_details: { path: req.originalUrl } },
            ...(error
                ? {
                    error: {
                        kind: error.message,
                        stack: (error.originalError?.details?.stack ?? error.details?.stack),
                        message: error.originalError?.message ?? error.message,
                    },
                }
                : {}),
        };
        if ([404, 429].includes(res.statusCode)) {
            logger.warn(message, metadata);
        }
        else if (res.statusCode >= 400) {
            logger.error(message, metadata);
        }
        else if (req.originalUrl !== '/health') {
            // Don't log successful health check requests
            logger.info(message, metadata);
        }
    });
    next();
}
export default onFinish;