I m writing a pants plugin and need to call out to Go progra Pants #plugins

I'm writing a pants plugin and need to call out to...

magnificent-fish-7114

10/05/2024, 8:47 PM

I'm writing a pants plugin and need to call out to Go program for some processing. I'm building the program in the same

BUILD

file as the plugin itself (and have added it to

dependencies

) but I can't quite figure out how I should reference it in order to create a

Process

🤔

fast-nail-55400

10/06/2024, 5:39 PM

The plugin will need to request that the Go backend build the binary within the plugin code.

fast-nail-55400

10/07/2024, 7:02 PM

The integration test in https://github.com/pantsbuild/pants/blob/6bcd56853a823c3d51a735e6c0977076076df68a/[…]ython/pants/backend/go/goals/package_binary_integration_test.py is an example with

RuleRunner

of asking the engine to package a

go_binary

target and then running it programmatically.

fast-nail-55400

10/07/2024, 7:03 PM

However, that only works for user code. If your plugin wants to package Go code to run, then you will have to use the workflow used by the Go backend itself for its own Go helper binaries. Take a look at

LoadedGoBinary

in https://github.com/pantsbuild/pants/blob/5580f808ceea83b15bbc85498f0a55b78362772a/src/python/pants/backend/go/go_sources/load_go_binary.py

fast-nail-55400

10/07/2024, 7:03 PM

(and the files which use the

LoadedGoBinary

rules)

fast-nail-55400

10/07/2024, 7:04 PM

That workflow is used to build the "package analyer" and the test main generator (among other uses)

magnificent-fish-7114

10/08/2024, 11:16 AM

Thanks! I managed to figure it out 🙏

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