Update devops adoption snapshots daily

So we can get information displayed faster

config/gitlab.yml.example

@@ -477,7 +477,7 @@ production: &base
   ee_cron_jobs:
     # Schedule snapshots for all devops adoption segments
     analytics_devops_adoption_create_all_snapshots_worker:
-      cron: 0 0 1 * *
+      cron: 0 4 * * *
 
     # Snapshot active users statistics
     historical_data_worker:

config/initializers/1_settings.rb

@@ -543,7 +543,7 @@ Settings.cron_jobs['manage_evidence_worker']['job_class'] = 'Releases::ManageEvi
 
 Gitlab.ee do
   Settings.cron_jobs['analytics_devops_adoption_create_all_snapshots_worker'] ||= Settingslogic.new({})
-  Settings.cron_jobs['analytics_devops_adoption_create_all_snapshots_worker']['cron'] ||= '0 0 1 * *'
+  Settings.cron_jobs['analytics_devops_adoption_create_all_snapshots_worker']['cron'] ||= '0 4 * * *'
   Settings.cron_jobs['analytics_devops_adoption_create_all_snapshots_worker']['job_class'] = 'Analytics::DevopsAdoption::CreateAllSnapshotsWorker'
   Settings.cron_jobs['active_user_count_threshold_worker'] ||= Settingslogic.new({})
   Settings.cron_jobs['active_user_count_threshold_worker']['cron'] ||= '0 12 * * *'

doc/user/admin_area/analytics/dev_ops_report.md

@@ -50,7 +50,9 @@ The DevOps Adoption tab shows you which segments of your organization are using
 - Deploys
 - Scanning
 
-Segments are arbitrary collections of GitLab groups that you define. You might define a segment to represent a small team, a large department, or a whole organization. You are limited to creating a maximum of 20 segments, and each segment is limited to a maximum of 20 groups. Buttons to manage your segments appear in the DevOps Adoption section of the page.
+Segments are arbitrary collections of GitLab groups that you define. You might define a segment to represent a small team, a large department, or a whole organization. 
+You are limited to creating a maximum of 20 segments, and each segment is limited to a maximum of 20 groups. 
+Buttons to manage your segments appear in the DevOps Adoption section of the page.
 
 DevOps Adoption allows you to:
 

ee/app/models/analytics/devops_adoption/snapshot.rb

@@ -25,6 +25,7 @@ class Analytics::DevopsAdoption::Snapshot < ApplicationRecord
   end
 
   scope :for_month, -> (month_date) { where(end_time: month_date.end_of_month) }
+  scope :not_finalized, -> { where(arel_table[:recorded_at].lteq(arel_table[:end_time])) }
 
   def start_time
     end_time.beginning_of_month

ee/app/workers/analytics/devops_adoption/create_all_snapshots_worker.rb

@@ -2,6 +2,7 @@
 
 module Analytics
   module DevopsAdoption
+    # Schedules update of snapshots for all segments
     class CreateAllSnapshotsWorker
       include ApplicationWorker
       # This worker does not perform work scoped to a context
@@ -14,10 +15,8 @@ module Analytics
 
       # rubocop: disable CodeReuse/ActiveRecord
       def perform
-        range_end = 1.month.ago.end_of_month
-
         ::Analytics::DevopsAdoption::Segment.all.pluck(:id).each.with_index do |segment_id, i|
-          CreateSnapshotWorker.perform_in(i * WORKERS_GAP, segment_id, range_end)
+          CreateSnapshotWorker.perform_in(i * WORKERS_GAP, segment_id, nil)
         end
       end
       # rubocop: enable CodeReuse/ActiveRecord

ee/app/workers/analytics/devops_adoption/create_snapshot_worker.rb

@@ -2,17 +2,39 @@
 
 module Analytics
   module DevopsAdoption
+    # Updates all pending snapshots for given segment (from previous month)
+    # and creates or update snapshot for current month
     class CreateSnapshotWorker
       include ApplicationWorker
 
       feature_category :devops_reports
       idempotent!
 
-      def perform(segment_id, range_end)
-        segment = ::Analytics::DevopsAdoption::Segment.find(segment_id)
+      # range_end was deprecated and must be removed in 14.0
+      #
+      def perform(segment_id, _deprecated_range_end = nil)
+        segment = Segment.find(segment_id)
 
-        ::Analytics::DevopsAdoption::Snapshots::CalculateAndSaveService.new(segment: segment, range_end: range_end).execute
+        pending_ranges(segment).each do |range_end|
+          Snapshots::CalculateAndSaveService.new(segment: segment, range_end: range_end).execute
+        end
       end
+
+      private
+
+      # rubocop: disable CodeReuse/ActiveRecord
+      def pending_ranges(segment)
+        end_times = segment.snapshots.not_finalized.pluck(:end_time)
+
+        now = Time.zone.now
+
+        if !now.end_of_month.to_date.in?(end_times.map(&:to_date)) && now.day > 1
+          end_times << now.end_of_month
+        end
+
+        end_times
+      end
+      # rubocop: enable CodeReuse/ActiveRecord
     end
   end
 end

ee/changelogs/unreleased/292516-daily-updates-for-devops-adoption-p3.yml

+---
+title: Update devops adoption snapshots daily
+merge_request: 50568
+author:
+type: changed

ee/db/fixtures/development/31_devops_adoption.rb

@@ -30,12 +30,11 @@ Gitlab::Seeder.quiet do
     booleans = [true, false]
 
     # create snapshots for the last 5 months
-    5.downto(1).each do |index|
+    4.downto(0).each do |index|
       end_time = index.months.ago.at_end_of_month
-      recorded_at = end_time + 1.day
 
       segments.each do |segment|
-        Analytics::DevopsAdoption::Snapshot.create!(
+        calculated_data = {
           segment: segment,
           issue_opened: booleans.sample,
           merge_request_opened: booleans.sample,
@@ -44,11 +43,11 @@ Gitlab::Seeder.quiet do
           pipeline_succeeded: booleans.sample,
           deploy_succeeded: booleans.sample,
           security_scan_succeeded: booleans.sample,
-          recorded_at: recorded_at,
+          recorded_at: [end_time + 1.day, Time.zone.now].min,
           end_time: end_time
-        )
+        }
 
-        segment.update!(last_recorded_at: recorded_at)
+        Analytics::DevopsAdoption::Snapshots::CreateService.new(params: calculated_data).execute
       end
     end
   end

ee/spec/models/analytics/devops_adoption/snapshot_spec.rb

@@ -37,6 +37,16 @@ RSpec.describe Analytics::DevopsAdoption::Snapshot, type: :model do
     end
   end
 
+  describe '.not_finalized' do
+    it 'returns all snapshots which were recorded earlier than snapshot end_time' do
+      segment = create(:devops_adoption_segment)
+      snapshot1 = create(:devops_adoption_snapshot, segment: segment, recorded_at: 1.day.ago, end_time: Time.zone.now)
+      create(:devops_adoption_snapshot, segment: segment, recorded_at: 1.day.ago, end_time: 2.days.ago)
+
+      expect(described_class.not_finalized).to match_array([snapshot1])
+    end
+  end
+
   describe '#start_time' do
     subject(:segment) { described_class.new(end_time: end_time) }
 

ee/spec/workers/analytics/devops_adoption/create_all_snapshots_worker_spec.rb

@@ -11,9 +11,8 @@ RSpec.describe Analytics::DevopsAdoption::CreateAllSnapshotsWorker do
 
     it 'schedules workers for each individual segment' do
       freeze_time do
-        end_time = 1.month.ago.end_of_month
-        expect(Analytics::DevopsAdoption::CreateSnapshotWorker).to receive(:perform_in).with(0, segment1.id, end_time)
-        expect(Analytics::DevopsAdoption::CreateSnapshotWorker).to receive(:perform_in).with(5, segment2.id, end_time)
+        expect(Analytics::DevopsAdoption::CreateSnapshotWorker).to receive(:perform_in).with(0, segment1.id, nil)
+        expect(Analytics::DevopsAdoption::CreateSnapshotWorker).to receive(:perform_in).with(5, segment2.id, nil)
 
         worker.perform
       end

ee/spec/workers/analytics/devops_adoption/create_snapshot_worker_spec.rb

@@ -7,14 +7,70 @@ RSpec.describe Analytics::DevopsAdoption::CreateSnapshotWorker do
 
   describe "#perform" do
     let!(:segment) { create :devops_adoption_segment }
-    let!(:range_end) { 1.day.ago }
 
-    it 'calls for Analytics::DevopsAdoption::Snapshots::CalculateAndSaveService service' do
-      expect_next_instance_of(::Analytics::DevopsAdoption::Snapshots::CalculateAndSaveService, segment: segment, range_end: range_end) do |instance|
-        expect(instance).to receive(:execute)
+    let!(:pending_snapshot) do
+      create(:devops_adoption_snapshot,
+             segment: segment,
+             end_time: DateTime.parse('2020-10-01').end_of_month,
+             recorded_at: DateTime.parse('2020-10-20')).reload
+    end
+
+    let!(:finalized_snapshot) do
+      create(:devops_adoption_snapshot,
+             segment: segment,
+             end_time: DateTime.parse('2020-09-01').end_of_month,
+             recorded_at: DateTime.parse('2020-10-20')).reload
+    end
+
+    let(:service_mock) { instance_double('Analytics::DevopsAdoption::Snapshots::CalculateAndSaveService', execute: true) }
+
+    it 'updates metrics for all not finalized snapshots and current month' do
+      freeze_time do
+        allow_next_instance_of(Analytics::DevopsAdoption::Snapshots::CalculateAndSaveService, segment: segment, range_end: pending_snapshot.end_time) do |instance|
+          expect(instance).to receive(:execute)
+        end
+        allow_next_instance_of(Analytics::DevopsAdoption::Snapshots::CalculateAndSaveService, segment: segment, range_end: finalized_snapshot.end_time) do |instance|
+          expect(instance).not_to receive(:execute)
+        end
+        allow_next_instance_of(Analytics::DevopsAdoption::Snapshots::CalculateAndSaveService, segment: segment, range_end: Time.zone.now.end_of_month) do |instance|
+          expect(instance).to receive(:execute)
+        end
+
+        worker.perform(segment.id)
       end
+    end
 
-      worker.perform(segment.id, range_end)
+    context 'when metric for current month already exists' do
+      it 'calls for current month calculation only once' do
+        travel_to(pending_snapshot.recorded_at + 1.day) do
+          allow_next_instance_of(Analytics::DevopsAdoption::Snapshots::CalculateAndSaveService, segment: segment, range_end: pending_snapshot.end_time) do |instance|
+            expect(instance).to receive(:execute).once
+          end
+          allow_next_instance_of(Analytics::DevopsAdoption::Snapshots::CalculateAndSaveService, segment: segment, range_end: finalized_snapshot.end_time) do |instance|
+            expect(instance).not_to receive(:execute)
+          end
+
+          worker.perform(segment.id)
+        end
+      end
+    end
+
+    context 'when today is first day of the month' do
+      it 'doesnt update metrics for current month' do
+        travel_to((pending_snapshot.recorded_at + 1.month).beginning_of_month) do
+          allow_next_instance_of(Analytics::DevopsAdoption::Snapshots::CalculateAndSaveService, segment: segment, range_end: pending_snapshot.end_time) do |instance|
+            expect(instance).to receive(:execute)
+          end
+          allow_next_instance_of(Analytics::DevopsAdoption::Snapshots::CalculateAndSaveService, segment: segment, range_end: finalized_snapshot.end_time) do |instance|
+            expect(instance).not_to receive(:execute)
+          end
+          allow_next_instance_of(Analytics::DevopsAdoption::Snapshots::CalculateAndSaveService, segment: segment, range_end: Time.zone.now.end_of_month) do |instance|
+            expect(instance).not_to receive(:execute)
+          end
+
+          worker.perform(segment.id)
+        end
+      end
     end
   end
 end