43 lines
1,004 B
Ruby
43 lines
1,004 B
Ruby
# frozen_string_literal: true
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module Gitlab
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module Analytics
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module CycleAnalytics
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class Median
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include StageQueryHelpers
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def initialize(stage:, query:)
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@stage = stage
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@query = query
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end
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def seconds
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@query = @query.select(median_duration_in_seconds.as('median'))
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result = execute_query(@query).first || {}
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result['median'] || nil
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end
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def days
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seconds ? seconds.fdiv(1.day) : nil
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end
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private
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attr_reader :stage
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def percentile_cont
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percentile_cont_ordering = Arel::Nodes::UnaryOperation.new(Arel::Nodes::SqlLiteral.new('ORDER BY'), duration)
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Arel::Nodes::NamedFunction.new(
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'percentile_cont(0.5) WITHIN GROUP',
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[percentile_cont_ordering]
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)
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end
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def median_duration_in_seconds
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Arel::Nodes::Extract.new(percentile_cont, :epoch)
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end
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end
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end
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end
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end
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