- 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
If the final name is going to be too big, use the hash over the proposed
path to create an unique name that fits the requirements of path length
under Linux
