debian-mirror-gitlab/lib/gitlab/analytics/cycle_analytics/average.rb

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# frozen_string_literal: true
module Gitlab
module Analytics
module CycleAnalytics
class Average
include Gitlab::Utils::StrongMemoize
include StageQueryHelpers
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def initialize(stage:, query:, params: {})
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@stage = stage
@query = query
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@params = params
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end
def seconds
select_average ? select_average['average'] : nil
end
def days
seconds ? seconds.fdiv(1.day) : nil
end
private
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attr_reader :stage, :params
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# rubocop: disable CodeReuse/ActiveRecord
def select_average
strong_memoize(:select_average) do
execute_query(@query.select(average_in_seconds.as('average')).reorder(nil)).first
end
end
# rubocop: enable CodeReuse/ActiveRecord
def average
Arel::Nodes::NamedFunction.new(
'AVG',
[duration]
)
end
def average_in_seconds
Arel::Nodes::Extract.new(average, :epoch)
end
end
end
end
end