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class DeleteMergedBranchesService < BaseService
def async_execute
DeleteMergedBranchesWorker.perform_async(project.id, current_user.id)
end
def execute
raise Gitlab::Access::AccessDeniedError unless can?(current_user, :push_code, project)
# n+1: https://gitlab.com/gitlab-org/gitlab-ce/issues/37438
Gitlab::GitalyClient.allow_n_plus_1_calls do
branches = project.repository.branch_names
branches = branches.select { |branch| project.repository.merged_to_root_ref?(branch) }
# Prevent deletion of branches relevant to open merge requests
branches -= merge_request_branch_names
# Prevent deletion of protected branches
branches = branches.reject { |branch| ProtectedBranch.protected?(project, branch) }
branches.each do |branch|
DeleteBranchService.new(project, current_user).execute(branch)
end
end
end
private
def merge_request_branch_names
# reorder(nil) is necessary for SELECT DISTINCT because default scope adds an ORDER BY
source_names = project.origin_merge_requests.opened.reorder(nil).uniq.pluck(:source_branch)
target_names = project.merge_requests.opened.reorder(nil).uniq.pluck(:target_branch)
(source_names + target_names).uniq
end
end
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