The use case is as part of https://github.com/xlfe/radiale. The concept is the radiale babashka script runs as a service 24/7 (partially because as a home automation system, it has to manage state 24/7 - eg, sensor detects something, do something else) but I'd also like to be able to set timed actions too (eg. for example I want to turn on a light at the same time each day). So I'm looking for a scheduler that is happy within babashka. I could find a python one and interact with it through the pod framework, but I'm trying to keep as much in Clojure as possible (and chime looks nice!).,,

I think you could maybe rewrite chime in such a way that bb is happy with it. The problem is that (currently) bb can only reify pre-selected java interface(s), so this won't work: https://github.com/jarohen/chime/blob/fa0b6e8c0f68e6d6134aee6ba9eb2ce032ba65b0/src/chime/core.clj#L117 But if you could rewrite that using functions, that would work just fine.

This seems like something that could work: https://github.com/overtone/at-at/blob/master/src/overtone/at_at.clj Given that all the Java classes are in bb.

It seems that ScheduledThreadPoolExecutor is the most important one to add.

Another idea might be to use cron jobs directly

Thanks - at-at looks like it would do too. Yes I get

----- Error --------------------------------------------------------------------
Type:     java.lang.Exception
Message:  Unable to resolve classname: java.util.concurrent.ScheduledThreadPoolExecutor
Location: overtone/at_at.clj:2:3

Hmm. I don't see how cron jobs would work, without some kind of message bus? Because my babashka script is long-running, rather than being started each time

I mean, you could shell out to install cron jobs, but that might not be so nice.

Yeah. I think a python scheduler via the pod interface would be better than shell and cron!

I made a branch at-at where I added the necessary classes. Let's see how much binary size it adds. You can download the binaries from #babashka-circleci-builds to try out if this works.

It seems the binary size growth is pretty reasonable.

thanks! that was quick 🙂

I'll give it a whirl 🙂

That's looking like a winner

only 106kb added 😂

did it work for you?

yep

awesome

thanks

40kb is coming from java.text.SimpleDateFormat which I resisted to add for a long time since java.time is the recommend way, but it has come up so many times now that I will just go ahead and add it ;)

merged to master

🙂 thanks!

https://twitter.com/borkdude/status/1499338195963678720

Does it mean these bits will be available in bb https://github.com/overtone/at-at/blob/master/src/overtone/at_at.clj#L2 right?

yes. already available with:

bash <(curl ) --version 0.7.7-SNAPSHOT --dir .