Store & use ConvDev percentages returned by Version app

app/models/conversational_development_index/metric.rb

@@ -13,9 +13,7 @@ module ConversationalDevelopmentIndex
     end
     def percentage_score(feature)
-      return 100 if leader_score(feature).zero?
-
-      100 * instance_score(feature) / leader_score(feature)
+      self["percentage_#{feature}"]
     end
   end
 end

app/services/submit_usage_ping_service.rb

 class SubmitUsagePingService
   URL = 'https://version.gitlab.com/usage_data'.freeze
+  METRICS = %w[leader_issues instance_issues percentage_issues leader_notes instance_notes
+               percentage_notes leader_milestones instance_milestones percentage_milestones
+               leader_boards instance_boards percentage_boards leader_merge_requests
+               instance_merge_requests percentage_merge_requests leader_ci_pipelines
+               instance_ci_pipelines percentage_ci_pipelines leader_environments instance_environments
+               percentage_environments leader_deployments instance_deployments percentage_deployments
+               leader_projects_prometheus_active instance_projects_prometheus_active
+               percentage_projects_prometheus_active leader_service_desk_issues instance_service_desk_issues
+               percentage_service_desk_issues].freeze
+
   include Gitlab::CurrentSettings
   def execute
@@ -27,15 +37,7 @@ class SubmitUsagePingService
     return unless response['conv_index'].present?
     ConversationalDevelopmentIndex::Metric.create!(
-      response['conv_index'].slice(
-        'leader_issues', 'instance_issues', 'leader_notes', 'instance_notes',
-        'leader_milestones', 'instance_milestones', 'leader_boards', 'instance_boards',
-        'leader_merge_requests', 'instance_merge_requests', 'leader_ci_pipelines',
-        'instance_ci_pipelines', 'leader_environments', 'instance_environments',
-        'leader_deployments', 'instance_deployments', 'leader_projects_prometheus_active',
-        'instance_projects_prometheus_active', 'leader_service_desk_issues',
-        'instance_service_desk_issues'
-      )
+      response['conv_index'].slice(*METRICS)
     )
   end
 end

changelogs/unreleased/35761-convdev-perc.yml

+---
+title: Store & use ConvDev percentages returned by the Version app
+merge_request:
+author:

db/migrate/20170731175128_add_percentages_to_conv_dev.rb

+class AddPercentagesToConvDev < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+  disable_ddl_transaction!
+
+  DOWNTIME = false
+
+  def up
+    add_column_with_default :conversational_development_index_metrics, :percentage_boards, :float, allow_null: false, default: 0
+    add_column_with_default :conversational_development_index_metrics, :percentage_ci_pipelines, :float, allow_null: false, default: 0
+    add_column_with_default :conversational_development_index_metrics, :percentage_deployments, :float, allow_null: false, default: 0
+    add_column_with_default :conversational_development_index_metrics, :percentage_environments, :float, allow_null: false, default: 0
+    add_column_with_default :conversational_development_index_metrics, :percentage_issues, :float, allow_null: false, default: 0
+    add_column_with_default :conversational_development_index_metrics, :percentage_merge_requests, :float, allow_null: false, default: 0
+    add_column_with_default :conversational_development_index_metrics, :percentage_milestones, :float, allow_null: false, default: 0
+    add_column_with_default :conversational_development_index_metrics, :percentage_notes, :float, allow_null: false, default: 0
+    add_column_with_default :conversational_development_index_metrics, :percentage_projects_prometheus_active, :float, allow_null: false, default: 0
+    add_column_with_default :conversational_development_index_metrics, :percentage_service_desk_issues, :float, allow_null: false, default: 0
+  end
+
+  def down
+    remove_column :conversational_development_index_metrics, :percentage_boards
+    remove_column :conversational_development_index_metrics, :percentage_ci_pipelines
+    remove_column :conversational_development_index_metrics, :percentage_deployments
+    remove_column :conversational_development_index_metrics, :percentage_environments
+    remove_column :conversational_development_index_metrics, :percentage_issues
+    remove_column :conversational_development_index_metrics, :percentage_merge_requests
+    remove_column :conversational_development_index_metrics, :percentage_milestones
+    remove_column :conversational_development_index_metrics, :percentage_notes
+    remove_column :conversational_development_index_metrics, :percentage_projects_prometheus_active
+    remove_column :conversational_development_index_metrics, :percentage_service_desk_issues
+  end
+end

db/post_migrate/20170803090603_calculate_conv_dev_index_percentages.rb

+class CalculateConvDevIndexPercentages < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+  DOWNTIME = false
+
+  class ConversationalDevelopmentIndexMetric < ActiveRecord::Base
+    self.table_name = 'conversational_development_index_metrics'
+
+    METRICS = %w[boards ci_pipelines deployments environments issues merge_requests milestones notes
+                 projects_prometheus_active service_desk_issues]
+  end
+
+  def up
+    ConversationalDevelopmentIndexMetric.find_each do |conv_dev_index|
+      update = []
+
+      ConversationalDevelopmentIndexMetric::METRICS.each do |metric|
+        instance_score = conv_dev_index["instance_#{metric}"].to_f
+        leader_score = conv_dev_index["leader_#{metric}"].to_f
+
+        percentage = leader_score.zero? ? 0.0 : (instance_score / leader_score) * 100
+        update << "percentage_#{metric} = '#{percentage}'"
+      end
+
+      execute("UPDATE conversational_development_index_metrics SET #{update.join(',')} WHERE id = #{conv_dev_index.id}")
+    end
+  end
+
+  def down
+  end
+end

db/schema.rb

@@ -451,6 +451,16 @@ ActiveRecord::Schema.define(version: 20170803130232) do
     t.float "instance_service_desk_issues", null: false
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.float "percentage_boards", default: 0.0, null: false
+    t.float "percentage_ci_pipelines", default: 0.0, null: false
+    t.float "percentage_deployments", default: 0.0, null: false
+    t.float "percentage_environments", default: 0.0, null: false
+    t.float "percentage_issues", default: 0.0, null: false
+    t.float "percentage_merge_requests", default: 0.0, null: false
+    t.float "percentage_milestones", default: 0.0, null: false
+    t.float "percentage_notes", default: 0.0, null: false
+    t.float "percentage_projects_prometheus_active", default: 0.0, null: false
+    t.float "percentage_service_desk_issues", default: 0.0, null: false
   end
   create_table "deploy_keys_projects", force: :cascade do |t|

spec/factories/conversational_development_index_metrics.rb

@@ -2,32 +2,42 @@ FactoryGirl.define do
   factory :conversational_development_index_metric, class: ConversationalDevelopmentIndex::Metric do
     leader_issues 9.256
     instance_issues 1.234
+    percentage_issues 13.331
     leader_notes 30.33333
     instance_notes 28.123
+    percentage_notes 92.713
     leader_milestones 16.2456
     instance_milestones 1.234
+    percentage_milestones 7.595
     leader_boards 5.2123
     instance_boards 3.254
+    percentage_boards 62.429
     leader_merge_requests 1.2
     instance_merge_requests 0.6
+    percentage_merge_requests 50.0
     leader_ci_pipelines 12.1234
     instance_ci_pipelines 2.344
+    percentage_ci_pipelines 19.334
     leader_environments 3.3333
     instance_environments 2.2222
+    percentage_environments 66.672
     leader_deployments 1.200
     instance_deployments 0.771
+    percentage_deployments 64.25
     leader_projects_prometheus_active 0.111
     instance_projects_prometheus_active 0.109
+    percentage_projects_prometheus_active 98.198
     leader_service_desk_issues 15.891
     instance_service_desk_issues 13.345
+    percentage_service_desk_issues 83.978
   end
 end

spec/migrations/calculate_conv_dev_index_percentages_spec.rb

+# encoding: utf-8
+
+require 'spec_helper'
+require Rails.root.join('db', 'post_migrate', '20170803090603_calculate_conv_dev_index_percentages.rb')
+
+describe CalculateConvDevIndexPercentages, truncate: true do
+  let(:migration) { described_class.new }
+  let!(:conv_dev_index) do
+    create(:conversational_development_index_metric,
+      leader_notes: 0,
+      instance_milestones: 0,
+      percentage_issues: 0,
+      percentage_notes: 0,
+      percentage_milestones: 0,
+      percentage_boards: 0,
+      percentage_merge_requests: 0,
+      percentage_ci_pipelines: 0,
+      percentage_environments: 0,
+      percentage_deployments: 0,
+      percentage_projects_prometheus_active: 0,
+      percentage_service_desk_issues: 0)
+  end
+
+  describe '#up' do
+    it 'calculates percentages correctly' do
+      migration.up
+      conv_dev_index.reload
+
+      expect(conv_dev_index.percentage_issues).to be_within(0.1).of(13.3)
+      expect(conv_dev_index.percentage_notes).to be_zero # leader 0
+      expect(conv_dev_index.percentage_milestones).to be_zero # instance 0
+      expect(conv_dev_index.percentage_boards).to be_within(0.1).of(62.4)
+      expect(conv_dev_index.percentage_merge_requests).to eq(50.0)
+      expect(conv_dev_index.percentage_ci_pipelines).to be_within(0.1).of(19.3)
+      expect(conv_dev_index.percentage_environments).to be_within(0.1).of(66.7)
+      expect(conv_dev_index.percentage_deployments).to be_within(0.1).of(64.2)
+      expect(conv_dev_index.percentage_projects_prometheus_active).to be_within(0.1).of(98.2)
+      expect(conv_dev_index.percentage_service_desk_issues).to be_within(0.1).of(84.0)
+    end
+  end
+end

spec/models/conversational_development_index/metric_spec.rb

+require 'rails_helper'
+
+describe ConversationalDevelopmentIndex::Metric do
+  let(:conv_dev_index) { create(:conversational_development_index_metric) }
+
+  describe '#percentage_score' do
+    it 'returns stored percentage score' do
+      expect(conv_dev_index.percentage_score('issues')).to eq(13.331)
+    end
+  end
+end

spec/presenters/conversational_development_index/metric_presenter_spec.rb

@@ -8,9 +8,9 @@ describe ConversationalDevelopmentIndex::MetricPresenter do
     it 'includes instance score, leader score and percentage score' do
       issues_card = subject.cards.first
-      expect(issues_card.instance_score).to eq 1.234
-      expect(issues_card.leader_score).to eq 9.256
-      expect(issues_card.percentage_score).to be_within(0.1).of(13.3)
+      expect(issues_card.instance_score).to eq(1.234)
+      expect(issues_card.leader_score).to eq(9.256)
+      expect(issues_card.percentage_score).to eq(13.331)
     end
   end

spec/services/submit_usage_ping_service_spec.rb

@@ -46,6 +46,8 @@ describe SubmitUsagePingService do
         .by(1)
       expect(ConversationalDevelopmentIndex::Metric.last.leader_issues).to eq 10.2
+      expect(ConversationalDevelopmentIndex::Metric.last.instance_issues).to eq 3.2
+      expect(ConversationalDevelopmentIndex::Metric.last.percentage_issues).to eq 31.37
     end
   end
@@ -60,6 +62,7 @@ describe SubmitUsagePingService do
       conv_index: {
         leader_issues: 10.2,
         instance_issues: 3.2,
+        percentage_issues: 31.37,
         leader_notes: 25.3,
         instance_notes: 23.2,
@@ -86,7 +89,9 @@ describe SubmitUsagePingService do
         instance_projects_prometheus_active: 0.30,
         leader_service_desk_issues: 15.8,
-        instance_service_desk_issues: 15.1
+        instance_service_desk_issues: 15.1,
+
+        non_existing_column: 'value'
       }
     }
   end