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module Gitlab
module CycleAnalytics
class BaseStage
include BaseQuery
def initialize(project:, options:)
@project = project
@options = options
end
def event
@event ||= Gitlab::CycleAnalytics::Event[name].new(project: @project,
stage: name,
options: event_options)
end
def events
event.fetch
end
def median_data
AnalyticsStageSerializer.new.represent(self).as_json
end
def title
name.to_s.capitalize
end
def median
cte_table = Arel::Table.new("cte_table_for_#{name}")
# Build a `SELECT` query. We find the first of the `end_time_attrs` that isn't `NULL` (call this end_time).
# Next, we find the first of the start_time_attrs that isn't `NULL` (call this start_time).
# We compute the (end_time - start_time) interval, and give it an alias based on the current
# cycle analytics stage.
interval_query = Arel::Nodes::As.new(
cte_table,
subtract_datetimes(base_query, @start_time_attrs, @end_time_attrs, name.to_s))
median_datetime(cte_table, interval_query, name)
end
def name
raise NotImplementedError.new("Expected #{self.name} to implement name")
end
private
def event_options
@options.merge(start_time_attrs: @start_time_attrs, end_time_attrs: @end_time_attrs)
end
end
end
end
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