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# frozen_string_literal: true
class AutoMergeService < BaseService
include Gitlab::Utils::StrongMemoize
STRATEGY_MERGE_WHEN_PIPELINE_SUCCEEDS = 'merge_when_pipeline_succeeds'
STRATEGIES = [STRATEGY_MERGE_WHEN_PIPELINE_SUCCEEDS].freeze
class << self
def all_strategies_ordered_by_preference
STRATEGIES
end
def get_service_class(strategy)
return unless all_strategies_ordered_by_preference.include?(strategy)
"::AutoMerge::#{strategy.camelize}Service".constantize
end
end
def execute(merge_request, strategy = nil)
strategy ||= preferred_strategy(merge_request)
service = get_service_instance(merge_request, strategy)
return :failed unless service&.available_for?(merge_request)
service.execute(merge_request)
end
def update(merge_request)
return :failed unless merge_request.auto_merge_enabled?
strategy = merge_request.auto_merge_strategy
get_service_instance(merge_request, strategy).update(merge_request)
end
def process(merge_request)
return unless merge_request.auto_merge_enabled?
strategy = merge_request.auto_merge_strategy
get_service_instance(merge_request, strategy).process(merge_request)
end
def cancel(merge_request)
return error("Can't cancel the automatic merge", 406) unless merge_request.auto_merge_enabled?
strategy = merge_request.auto_merge_strategy
get_service_instance(merge_request, strategy).cancel(merge_request)
end
def abort(merge_request, reason)
return error("Can't abort the automatic merge", 406) unless merge_request.auto_merge_enabled?
strategy = merge_request.auto_merge_strategy
get_service_instance(merge_request, strategy).abort(merge_request, reason)
end
def available_strategies(merge_request)
self.class.all_strategies_ordered_by_preference.select do |strategy|
get_service_instance(merge_request, strategy).available_for?(merge_request)
end
end
def preferred_strategy(merge_request)
available_strategies(merge_request).first
end
private
def get_service_instance(merge_request, strategy)
strong_memoize("service_instance_#{merge_request.id}_#{strategy}") do
self.class.get_service_class(strategy)&.new(project, current_user, params)
end
end
end
AutoMergeService.prepend_if_ee('EE::AutoMergeService')
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