762a240890
- Log system revamp: - Logs to stdout, disabled while testing - Use header `X-Request-Id`, or create a new `uuid` when no present, to identyfy log entries - Be able to set log level from env variable `LOG_LEVEL`, useful while testing: `LOG_LEVEL=info npm test`; even more human-readable: `LOG_LEVEL=info npm t | ./node_modules/.bin/pino-pretty` - Be able to reduce the footprint in the final log file depending on the environment - Use one logger for every service: Queries, Batch Queries (Jobs), and Data Ingestion (CopyTo/CopyFrom) - Stop using headers such as: `X-SQL-API-Log`, `X-SQL-API-Profiler`, and `X-SQL-API-Errors` as a way to log info. - Be able to tag requests with labels as an easier way to provide business metrics - Metro: Add log-collector utility (`metro`), it will be moved to its own repository. Attaching it here fro development purposes. Try it with the following command `LOG_LEVEL=info npm t | node metro` - Metro: Creates `metrics-collector.js` a stream to update Prometheus' counters and histograms and exposes them via Express' app (`:9145/metrics`). Use the ones defined in `grok_exporter` Announcements: - Profiler is always set. No need to check its existence anymore - Unify profiler usage for every endpoint Bug fixes: - Avoid hung requests while fetching user identifier
33 lines
870 B
JavaScript
33 lines
870 B
JavaScript
'use strict';
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const Profiler = require('../../stats/profiler-proxy');
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const { name: prefix } = require('../../../package.json');
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module.exports = function profiler ({ statsClient }) {
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return function profilerMiddleware (req, res, next) {
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const start = new Date();
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const { logger } = res.locals;
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req.profiler = new Profiler({
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profile: global.settings.useProfiler,
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statsd_client: statsClient
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});
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req.profiler.start(prefix);
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res.on('finish', () => {
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req.profiler.add({ response: new Date() - start });
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req.profiler.end();
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logger.info({ stats: req.profiler.toJSON() });
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try {
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req.profiler.sendStats();
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} catch (err) {
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logger.warn({ error: err });
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}
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});
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next();
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};
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};
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