Allow Git repositories to track only some branches
Summary:
Some installs use Git as the backbone of a CI framework or use a Git remote to
share patches. The tracker scripts currently recognize associated revisions as
"Committed" when they appear in any branch, even if that branch is
"alincoln-personal-development_test_hack" or whatever.
To address the broadest need here, allow Git repositories to be configured to
track only certain branches instead of all branches.
This doesn't allow you to import a branch into Diffusion but ignore it in
Differential. Supporting that is somewhat technically complicated because the
parser currently goes like this:
- Look at HEAD of all branches.
- For any commits we haven't seen before, follow them back to something we
have seen (or the root).
- "Discover" everything new.
Since this doesn't track <branch, commit> pairs, we currently don't have enough
information to tell when a commit appears in a branch for the first time, so we
don't have anywhere we can put a test for whether that branch is tracked and do
the Differential hook only if it is.
However, I think this cruder patch satisfies most of the need and is simple and
obvious in its implementation.
See also D1263.
Test Plan:
- Updated a Git repository with various filters: "", "master, remote", "derp",
" ,,, master ,,,,,"
- Edited SVN and Mercurial repositories to verify they didn't get caught in
the crossfire.
- Ran daemon in debug mode on libphutil with filter "derp", got exception
about no tracked branches. Ran with filter "master", got tracking. Ran with no
filter, got tracking.
- Looked at Diffusion with "derp" and "master", saw no branches and "master"
respectively.
- Added unit tests to cover filtering logic.
Reviewers: btrahan, jungejason, nh, fratrik
Reviewed By: fratrik
CC: aran, fratrik, epriestley
Maniphest Tasks: T270
Differential Revision: https://secure.phabricator.com/D1290