Is there any method to access the # of pending requests from a plumber endpoint, or from a hook?
I do not believe this can be done.
plumber returns a httpuv server. If the main R process is working on something, httpuv will not be notified of any pending requests while the main R process is working.
Thanks, that is what i was afraid of. What about in between, after it has processed one request and before it routes the next request?
When version 0.5.0 comes out, you might be able to things with async support...
- request comes in
- increment the counter
- have the body of the long running function be computed using
futurewill not access to the live counter, only the counter value it knows about at the start of execution.
- In the pre-serializer step, decrement the counter
But for now, I do not see a way.
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