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class CycleAnalytics
def issue
issues = Issue.includes(:metrics).where("issue_metrics.id IS NOT NULL").references(:issue_metrics).to_a
start_time_fn = -> (issue) { issue.created_at }
calculate_metric(issues, start_time_fn, Queries::issue_first_associated_with_milestone_or_first_added_to_list_label_time)
end
def plan
issues = Issue.includes(:metrics).where("issue_metrics.id IS NOT NULL").references(:issue_metrics).to_a
calculate_metric(issues,
Queries::issue_first_associated_with_milestone_or_first_added_to_list_label_time,
Queries::issue_closing_merge_request_opened_time)
end
def code
issues = Issue.all.to_a
start_time_fn = -> (merge_request) { merge_request.created_at }
calculate_metric(issues.map(&:closed_by_merge_requests).flatten,
start_time_fn,
Queries::mr_wip_flag_removed_or_assigned_to_user_other_than_author_time)
end
private
def calculate_metric(data, start_time_fn, end_time_fn)
times = data.map do |data_point|
start_time = start_time_fn[data_point]
end_time = end_time_fn[data_point]
if start_time.present? && end_time.present?
end_time - start_time
end
end
median(times.compact)
end
def median(coll)
return if coll.empty?
size = coll.length
(coll[size / 2] + coll[(size - 1) / 2]) / 2.0
end
end
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