I m hoping to find a simple way to download a file from the

Question

I m hoping to find a simple way to download a file from the internet and cache it for future runs Specifically this file is an executable that runs a DB emulator used in some tests I know I can create an `ExternalTool` and then a custom rule that uses that tool but that seems like a fair amount of work What I was hoping for is a `target` type like `download file` that is similar to `ExternalTool` but I can then just use that as a dependency in tests that require the tool That seems much easier as I d pretty much just have to specify a URL and be done while `ExternalTool` requires creating a class and a custom rule and then tests that require it can t do a simple `pants test some thing needing emulator ` because the custom rule wouldn t be `test` so I think I d need to create a new target type too and then connect the rule to the target etc

plain-carpet-73994 · Answer

Something like <https www pantsbuild org docs plugins codegen> would also work I m generating an executable file by downloading it but again seems like a long way to go I think what I want is something like `files` that takes a URL downloads it and caches it

hundreds-father-404 · Answer

Hi Sounds like you re looking for this <https www pantsbuild org docs rules api file system downloadfile|https www pantsbuild org docs rules api file system downloadfile>

hundreds-father-404 · Answer

We are also adding in the next 2 3 days a new plugin hook for doing set up before Pytest runs which you ll be able to hook into so that you can set up the emulator before

enough-analyst-54434 · Answer

IIUC < plain carpet 73994> explicitly does not want to have to write a rule for this He wants to just be able to configure it like a files dependency except remote

hundreds-father-404 · Answer

You re right I read too quickly sorry We could implement that via codegen Not too difficult The tricky part imo is the nuance of files vs resources and how that should be handled

happy-kitchen-89482 · Answer

Why does this have anything to do with codegen There is no source file in play afaict

hundreds-father-404 · Answer

We re converting a URL to a source file Codegen is how you do that currently Somewhat similar to using codegen for relocated files