blob: 0aefd434e1433a6a58be9c3ba29fe3dc2eed62ca (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
module Gitlab
module CycleAnalytics
class UsageData
PROJECTS_LIMIT = 10
attr_reader :projects, :options
def initialize(projects, options)
@projects = projects
@options = options
end
def to_json
total = 0
values = {}
medians_per_stage.each do |stage_name, medians|
medians = medians.map(&:presence).compact
stage_values = {
average: calc_average(medians),
sd: standard_deviation(medians),
missing: projects.length - medians.length
}
total += stage_values.values.compact.sum
values[stage_name] = stage_values
end
values[:total] = total
{ avg_cycle_analytics: values }
end
private
def medians_per_stage
projects.each_with_object({}) do |project, hsh|
::CycleAnalytics.new(project, options).all_medians_per_stage.each do |stage_name, median|
hsh[stage_name] ||= []
hsh[stage_name] << median
end
end
end
def calc_average(values)
return if values.empty?
(values.sum / values.length).to_i
end
def sample_variance(values)
return 0 if values.length <= 1
avg = calc_average(values)
sum = values.inject(0) do |acc, val|
acc + (val - avg)**2
end
sum / (values.length - 1)
end
def standard_deviation(values)
Math.sqrt(sample_variance(values)).to_i
end
end
end
end
|
