module Milestones class PromoteService < Milestones::BaseService PromoteMilestoneError = Class.new(StandardError) def execute(milestone) check_project_milestone!(milestone) Milestone.transaction do group_milestone = clone_project_milestone(milestone) move_children_to_group_milestone(group_milestone) # Destroy all milestones with same title across projects destroy_old_milestones(milestone) # Rollback if milestone is not valid unless group_milestone.valid? raise_error(group_milestone.errors.full_messages.to_sentence) end group_milestone end end private def milestone_ids_for_merge(group_milestone) # Pluck need to be used here instead of select so the array of ids # is persistent after old milestones gets deleted. @milestone_ids_for_merge ||= begin search_params = { title: group_milestone.title, project_ids: group_project_ids, state: 'all' } milestones = MilestonesFinder.new(search_params).execute milestones.pluck(:id) end end def move_children_to_group_milestone(group_milestone) milestone_ids_for_merge(group_milestone).in_groups_of(100, false) do |milestone_ids| update_children(group_milestone, milestone_ids) end end def check_project_milestone!(milestone) raise_error('Only project milestones can be promoted.') unless milestone.project_milestone? end def clone_project_milestone(milestone) params = milestone.slice(:title, :description, :start_date, :due_date, :state_event) create_service = CreateService.new(group, current_user, params) milestone = create_service.execute # milestone won't be valid here because of duplicated title milestone.save(validate: false) milestone end def update_children(group_milestone, milestone_ids) issues = Issue.where(project_id: group_project_ids, milestone_id: milestone_ids) merge_requests = MergeRequest.where(source_project_id: group_project_ids, milestone_id: milestone_ids) [issues, merge_requests].each do |issuable_collection| issuable_collection.update_all(milestone_id: group_milestone.id) end end def group @group ||= parent.group || raise_error('Project does not belong to a group.') end def destroy_old_milestones(milestone) Milestone.where(id: milestone_ids_for_merge(milestone)).destroy_all end def group_project_ids @group_project_ids ||= group.projects.pluck(:id) end def raise_error(message) raise PromoteMilestoneError, "Promotion failed - #{message}" end end end