require 'securerandom' # Compare 2 branches for one repo or between repositories # and return Gitlab::Git::Compare object that responds to commits and diffs class CompareService attr_reader :start_project, :start_branch_name def initialize(new_start_project, new_start_branch_name) @start_project = new_start_project @start_branch_name = new_start_branch_name end def execute(target_project, target_branch, straight: false) # If compare with other project we need to fetch ref first target_project.repository.with_repo_branch_commit( start_project.repository, start_branch_name) do |commit| break unless commit compare(commit.sha, target_project, target_branch, straight) end end private def compare(source_sha, target_project, target_branch, straight) raw_compare = Gitlab::Git::Compare.new( target_project.repository.raw_repository, target_branch, source_sha, straight ) Compare.new(raw_compare, target_project, straight: straight) end end