Summary: Fixes T7100. In the bizarre case that a Git repository has a branch and tag with the same name, don't resolve branch names into tag names.
Test Plan: Test repo with branch and tag both named "git" no longer reports ambiguity.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7100
Differential Revision: https://secure.phabricator.com/D12553
Summary:
Ref T2783. With service-oriented calls, we take a larger performacne hit than necessary resolving refs.
Instead of resolving refs over the wire, try to resolve them from the database first. This can resolve almost all refs (commit hashes, branch and tag names).
This can't resolve weird refs like `master~50`, and obviously can't resolve invalid refs. In those cases we'll go back to the old logic, call `diffusion.resolverefs`, and end up with the right result.
Test Plan:
- Browsed repositories in Diffusion.
- Verified that service repositories no longer make unnecessary `diffusion.resolverefs` calls for common refs (branch names, commit hashes).
- Resolved refs like `master~50`, saw call to underlying VCS and correct result.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T2783
Differential Revision: https://secure.phabricator.com/D11476
