[jdev] OpenSearch, consolidating logs from multiple RTC processes

[Daniel Pocock]

I've recently made patches in a few projects so they output logfiles in
JSON CEE format.  Structured logging like this makes it slightly easier
to load into databases.  At the same time, I had a close look at the
timestamp conventions to make sure that the log entries from different
processes will appear in the correct order when merged into a single
database.

I've been able to load them into OpenSearch and view them in the
OpenSearch Dashboard.

To load the logs, I tried three approaches:
- rsyslog: this appears troublesome, it tries to escape the JSON twice,
- curl: POST a log file, this is quite trivial and it works,
- logstash: file input to elasticsearch output,

Is anybody interested in trying this with any XMPP software or tools
that we share between different RTC ecosystems?

Gstreamer:
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/847

Kurento:
https://github.com/Kurento/kurento-media-server/pull/17

reSIProcate (repro SIP proxy, reTurn TURN server, ...)
https://github.com/resiprocate/resiprocate/commit/d1df9aeb956be79253560fe3628b3f37a4ef94f2