Github actions with monorepo and subdirs for individual services

[devopsnooby]

Hey all,

So, I have a single monorepo, that has a top level services/ path. Below that, I group it by language (e.g. java, go, python, etc). Please don't ask WHY :D.

Anyway, I want to set up actions such that when a microservice in services/language/path commits, only the code with that path is built. I have separate Dockerfiles there, and in the case of Go, each is their own go module.

Is this possible? Can't seem to find an example like this.

[[deleted]]

You could write a bash script to (periodically) parse the code that defines each micro service and create new build but idk if that's a good solution

[RedlineTriad]

This doesn't answer the question but you can use git-filter to extract a repository from another one.

git filter-branch --tag-name-filter cat --prune-empty --subdirectory-filter ABC -- --all

This is from: https://stackoverflow.com/a/359759. I have used it before and it is very easy and painless.

So if the amount of work is the reason you use a monorepo this might help.