Or better yet: just solve it yourself.
I built exactly that, jsmx. Available on npm, very simple source at
https://github.com/deitch/jsmx
On Sunday, June 10, 2012 11:35:12 AM UTC+3, deitch wrote:
>
> And, yes, I *know* I can use event emitter for this (or EventEmitter2,
> which is cleaner), but the point is to have it.
>
> On Sunday, June 10, 2012 11:21:43 AM UTC+3, deitch wrote:
>>
>> 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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