Question

I’d like to shorten the process of deploying to Heroku (i.e. a git push)

I use git-flow to organise my codebase – so typically the process would be:

1. start a new feature branch
2. Do the coding
3. Push this branch up to my dev heroku instance – git push develop feature/somefeature:master)
4. Merge into the develop branch
5. Create a new release branch
6. Push this to the production heroku instance – git push production release/1.2.3:master

What I’d like to do is be able to run a Fab command like:

fab dev_deploy

which would just deploy whatever the current working branch is to my dev instance

and

fab prod_deploy

which would do the same but push to the production instance.
I could include some sanity checks here to make sure I’m inside a release branch etc.

my fab commands would do other things (like push static assets up to the right S3 bucket etc, run south migrate commands and so on)

So all I really want to know is how to get the current working branch as a variable inside fabric…!?

Thanks,

Guy

Answer 1

OK – a bit more digging got me this:

from fabric.api import local
my_branch = local('git rev-parse --abbrev-ref HEAD', capture=True)

which does exactly what I wanted.