Re: [Fab-user] Can I pass in information from the command-line to my functions?

[Jeff Forcier]

If I read you right this is another "I really need to get my docstrings more
visible in the prose docs" issue that should be solved by my upcoming doc
sprint. You seem to be wanting task arguments:
http://docs.fabfile.org/0.9/api/main.html#fabric.main.parse_arguments

For example:

    from fabric.api import run

    def upgrade_webapp(revision):
        run('git checkout -b %s origin/%s' % (revision, revision))

Executed as:

    $ fab upgrade_webapp:rev14

or:

    $ fab upgrade_webapp:revision=rev14


-Jeff


On Tue, Aug 18, 2009 at 2:47 PM, Matthew Wilson<address@hidden> wrote:
> Right now, when I upgrade my production box to the next version of my
> web app, I run a set of commands manually.
>
> I'm working on converting all this to using fabric.
>
> Here's the commands I run to upgrade my web app from revision 13 to revision 
> 14:
>
> $ sudo supervisorctl stop all # this shuts down a bunch of scripts and
> my web server.
> $ cd ~/projects/webapp
> $ git fetch origin
> $ git checkout -b rev14 origin/rev14
> $ sudo supervisorctl start all
>
>
> When I upgrade from rev14 to rev15, it's going to be roughly the same
> steps, but I'll be checking out rev15 instead.
>
> I want to run fabric sort of like this:
>
> $ fab upgrade_webapp --revision rev14
>
> And then in my upgrade_webapp function, somehow use that revision
> rev14 as a dictionary that I can interpolated into my strings.
>
> Is this possible?
>
> How are other people solving problems where the functions are
> effectively identical except for parameters?
>
> Matt
>
>
>
> --
> Matthew Wilson
> address@hidden
> http://tplus1.com
>
>
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