• Timothy Andrew's avatar
    Refactor `Gitlab::GitAccess` · 60245bbe
    Timothy Andrew authored
    1. Don't use case statements for dispatch anymore. This leads to a lot
       of duplication, and makes the logic harder to follow.
    
    2. Remove duplicated logic.
    
        - For example, the `can_push_to_branch?` exists, but we also have a
          different way of checking the same condition within `change_access_check`.
    
        - This kind of duplication is removed, and the `can_push_to_branch?`
          method is used in both places.
    
    3. Move checks returning true/false to `UserAccess`.
    
        - All public methods in `GitAccess` now return an instance of
          `GitAccessStatus`. Previously, some methods would return
          true/false as well, which was confusing.
    
        - It makes sense for these kinds of checks to be at the level of a
          user, so the `UserAccess` class was repurposed for this. The prior
          `UserAccess.allowed?` classmethod is converted into an instance
          method.
    
        - All external uses of these checks have been migrated to use the
          `UserAccess` class
    
    4. Move the "change_access_check" into a separate class.
    
        - Create the `GitAccess::ChangeAccessCheck` class to run these
          checks, which are quite substantial.
    
        - `ChangeAccessCheck` returns an instance of `GitAccessStatus` as
          well.
    
    5. Break out the boolean logic in `ChangeAccessCheck` into `if/else`
       chains - this seems more readable.
    
    6. I can understand that this might look like overkill for !4892, but I
       think this is a good opportunity to clean it up.
    
        - http://martinfowler.com/bliki/OpportunisticRefactoring.html
    60245bbe
branches_helper.rb 594 Bytes