Is it possible to programmatically call a `goal` w...
# pluginsw
wide-midnight-78598
07/15/2022, 7:28 PMIs it possible to programmatically call a
goal@ruleh
hundreds-father-404
07/15/2022, 7:31 PMwhat do you mean?
w
wide-midnight-78598
07/15/2022, 7:35 PMLike, if I want to call "help" (for instance), without using
subprocessGet@rulewide-midnight-78598
07/15/2022, 7:36 PMI guess what I'm wondering is whether the CLI hooks are available from within a python script, without subprocess.
Autocomplete is one use-case, but I have a few others in the back of my mind for codegen and testing
f
fast-nail-55400
07/15/2022, 7:49 PMIs the code that wants to invoke a rule still running inside of Pants?
w
wide-midnight-78598
07/15/2022, 7:49 PMYes
f
fast-nail-55400
07/15/2022, 7:51 PMYou may want to look at the BSP code. It receives Build Server Protocol requests and then invokes the engine synchronously. https://github.com/pantsbuild/pants/blob/9ca84b5eb6ff66e224ee4f4e0a5a7aec0c922843/src/python/pants/bsp/protocol.py#L155-L165
fast-nail-55400
07/15/2022, 7:51 PMAlso, while you can call the engine to run a goal rule, you could also just request the intermediate level rules that the goal rule would have called.
fast-nail-55400
07/15/2022, 7:52 PMFor example, if you wanted to run
./pants checkCheckResultsw
wide-midnight-78598
07/15/2022, 7:52 PMAhhh, yes yes, the BSP - that's similar to the functionality I'm looking for!
wide-midnight-78598
07/15/2022, 7:52 PMAh, okay, I didn't know we could synchronously call the engine to run on results, perfect!
wide-midnight-78598
07/15/2022, 7:53 PMIn hindsight, I guess i could have spent some time in the unit tests to see how all the rule runners and such work, but the BSP feels more apt
w
witty-crayon-22786
07/15/2022, 8:29 PMthe
RuleRunnerwitty-crayon-22786
07/15/2022, 8:29 PMit essentially ends up being a simplified API for the engine (the
Scheduler2 Views