Is anything out there?
Sample use case: app has several logging levels, with a default. The
default is overridden by an env var LOG_LEVEL, read on startup. Easy.
Now I want to change the LOG_LEVEL to debug (or some higher level) for,
say, 30 minutes, and then change it back. I do *not* want to restart my app
- which would be necessary if I just changed the env var - because I may
lose some state that is crucial to my debugging effort.
Is there anything?
The way I would see it working, you have a "message bus" type object, which
anyone can subscribe to, but it publishes from the outside using http.
var mx = require('mx');
mx.sub('messagePattern',callbackFn);
Option A: use the already existing http listener, but have a special URL
path http://myserver/specialpath?param=val¶m=val&;....
Option B: set up a "message bus" type object, which anything can listen to
for messages, it then listens on a different port to isolate the traffic
from production traffic.
mx.listen(somePort);
>From the outside, you then talk HTTP to that given port (should have a
well-known default) to send a management message to the app:
curl http://localhost:somePort/messagePattern?param=val¶m=val....
(or you can PUT or POST).
Would need some form of authentication, but that is easy using http auth.
Thoughts here?
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