Track checking epic tasks on usage data

doc/development/usage_ping/dictionary.md

@@ -1100,6 +1100,54 @@ Status: `data_available`
 
 Tiers: `free`
 
+### `counts.g_project_management_users_checking_epic_task_monthly`
+
+Counts of MAU checking epic task
+
+[YAML definition](https://gitlab.com/gitlab-org/gitlab/-/blob/master/ee/config/metrics/counts_28d/20210421080207_g_project_management_users_checking_epic_task_monthly.yml)
+
+Group: `group::product planning`
+
+Status: `implemented`
+
+Tiers: `premium`, `ultimate`
+
+### `counts.g_project_management_users_checking_epic_task_weekly`
+
+Counts of WAU checking epic task
+
+[YAML definition](https://gitlab.com/gitlab-org/gitlab/-/blob/master/ee/config/metrics/counts_7d/20210421075943_g_project_management_users_checking_epic_task_weekly.yml)
+
+Group: `group::product planning`
+
+Status: `implemented`
+
+Tiers: `premium`, `ultimate`
+
+### `counts.g_project_management_users_unchecking_epic_task_monthly`
+
+Counts of MAU unchecking epic task
+
+[YAML definition](https://gitlab.com/gitlab-org/gitlab/-/blob/master/ee/config/metrics/counts_28d/20210421102516_g_project_management_users_unchecking_epic_task_monthly.yml)
+
+Group: `group::product planning`
+
+Status: `implemented`
+
+Tiers: `premium`, `ultimate`
+
+### `counts.g_project_management_users_unchecking_epic_task_weekly`
+
+Counts of WAU unchecking epic task
+
+[YAML definition](https://gitlab.com/gitlab-org/gitlab/-/blob/master/ee/config/metrics/counts_7d/20210421102812_g_project_management_users_unchecking_epic_task_weekly.yml)
+
+Group: `group::product planning`
+
+Status: `implemented`
+
+Tiers: `premium`, `ultimate`
+
 ### `counts.geo_event_log_max_id`
 
 Number of replication events on a Geo primary
@@ -6430,7 +6478,7 @@ Tiers: `free`, `premium`, `ultimate`
 
 ### `database.pg_system_id`
 
-Missing description
+TBD
 
 [YAML definition](https://gitlab.com/gitlab-org/gitlab/-/blob/master/config/metrics/counts_all/20210216183248_pg_system_id.yml)
 
@@ -7764,7 +7812,7 @@ Tiers: `free`, `premium`, `ultimate`
 
 Number of projects using 5 min production app CI template in last 7 days.
 
-[YAML definition](https://gitlab.com/gitlab-org/gitlab/-/blob/master/ee/config/metrics/counts_7d/20210216184515_p_ci_templates_5_min_production_app_weekly.yml)
+[YAML definition](https://gitlab.com/gitlab-org/gitlab/-/blob/master/config/metrics/counts_7d/20210216184515_p_ci_templates_5_min_production_app_weekly.yml)
 
 Group: `group::5-min-app`
 
@@ -16010,6 +16058,8 @@ Tiers: `free`
 
 Histogram (buckets 1 to 100) of projects with at least 1 enabled integration.
 
+[Object JSON schema](https://gitlab.com/gitlab-org/gitlab/-/blob/master/config/metrics/objects_schemas/projects_with_enabled_alert_integrations_histogram.json)
+
 [YAML definition](https://gitlab.com/gitlab-org/gitlab/-/blob/master/config/metrics/counts_all/20210309165717_projects_with_enabled_alert_integrations_histogram.yml)
 
 Group: `group::monitor`

ee/app/services/epics/update_service.rb

@@ -135,6 +135,19 @@ module Epics
 
       if epic.saved_change_to_attribute?(:description)
         ::Gitlab::UsageDataCounters::EpicActivityUniqueCounter.track_epic_description_changed_action(author: current_user)
+        track_task_changes(epic)
+      end
+    end
+
+    def track_task_changes(epic)
+      return if epic.updated_tasks.blank?
+
+      epic.updated_tasks.each do |task|
+        if task.complete?
+          Gitlab::UsageDataCounters::EpicActivityUniqueCounter.track_epic_task_checked(author: current_user)
+        else
+          Gitlab::UsageDataCounters::EpicActivityUniqueCounter.track_epic_task_unchecked(author: current_user)
+        end
       end
     end
   end

ee/changelogs/unreleased/292253-epic-task-epic-descr.yml

+---
+title: Track checking/unchecking tasks on epics
+merge_request: 60846
+author:
+type: added

ee/config/metrics/counts_28d/20210421080207_g_project_management_users_checking_epic_task_monthly.yml

+---
+# Name of this metric contains g_project_management prefix
+# because we are using the same slot from issue_tracking to
+# allow data aggregation.
+key_path: counts.g_project_management_users_checking_epic_task_monthly
+description: Counts of MAU checking epic task
+product_section: dev
+product_stage: plan
+product_group: group::product planning
+product_category: epics
+value_type: number
+status: implemented
+milestone: "13.12"
+introduced_by_url:
+time_frame: 28d
+data_source: redis_hll
+distribution:
+- ee
+tier:
+- premium
+- ultimate
\ No newline at end of file

ee/config/metrics/counts_28d/20210421102516_g_project_management_users_unchecking_epic_task_monthly.yml

+---
+# Name of this metric contains g_project_management prefix
+# because we are using the same slot from issue_tracking to
+# allow data aggregation.
+key_path: counts.g_project_management_users_unchecking_epic_task_monthly
+description: Counts of MAU unchecking epic task
+product_section: dev
+product_stage: plan
+product_group: group::product planning
+product_category: epics
+value_type: number
+status: implemented
+milestone: "13.12"
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/59871
+time_frame: 28d
+data_source: redis_hll
+distribution:
+- ee
+tier:
+- premium
+- ultimate
\ No newline at end of file

ee/config/metrics/counts_7d/20210421075943_g_project_management_users_checking_epic_task_weekly.yml

+---
+# Name of this metric contains g_project_management prefix
+# because we are using the same slot from issue_tracking to
+# allow data aggregation.
+key_path: counts.g_project_management_users_checking_epic_task_weekly
+description: Counts of WAU checking epic task
+product_section: dev
+product_stage: plan
+product_group: group::product planning
+product_category: epics
+value_type: number
+status: implemented
+milestone: "13.12"
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/59871
+time_frame: 7d
+data_source: redis_hll
+distribution:
+- ee
+tier:
+- premium
+- ultimate
\ No newline at end of file

ee/config/metrics/counts_7d/20210421102812_g_project_management_users_unchecking_epic_task_weekly.yml

+---
+# Name of this metric contains g_project_management prefix
+# because we are using the same slot from issue_tracking to
+# allow data aggregation.
+key_path: counts.g_project_management_users_unchecking_epic_task_weekly
+description: Counts of WAU unchecking epic task
+product_section: dev
+product_stage: plan
+product_group: group::product planning
+product_category: epics
+value_type: number
+status: implemented
+milestone: "13.12"
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/59871
+time_frame: 7d
+data_source: redis_hll
+distribution:
+- ee
+tier:
+- premium
+- ultimate

ee/lib/gitlab/usage_data_counters/epic_activity_unique_counter.rb

@@ -29,6 +29,8 @@ module Gitlab
       EPIC_VISIBLE = 'g_project_management_users_setting_epic_visible'
       EPIC_LABELS = 'g_project_management_epic_users_changing_labels'
       EPIC_DESTROYED = 'g_project_management_epic_destroyed'
+      EPIC_TASK_CHECKED = 'project_management_users_checking_epic_task'
+      EPIC_TASK_UNCHECKED = 'project_management_users_unchecking_epic_task'
 
       class << self
         def track_epic_created_action(author:)
@@ -119,6 +121,14 @@ module Gitlab
           track_unique_action(EPIC_DESTROYED, author)
         end
 
+        def track_epic_task_checked(author:)
+          track_unique_action(EPIC_TASK_CHECKED, author)
+        end
+
+        def track_epic_task_unchecked(author:)
+          track_unique_action(EPIC_TASK_UNCHECKED, author)
+        end
+
         private
 
         def track_unique_action(action, author)

ee/spec/lib/gitlab/usage_data_counters/epic_activity_unique_counter_spec.rb

@@ -269,4 +269,28 @@ RSpec.describe Gitlab::UsageDataCounters::EpicActivityUniqueCounter, :clean_gitl
 
     it_behaves_like 'does not track when feature flag is disabled', :track_epics_activity
   end
+
+  context 'for margin epic task as checked' do
+    def track_action(params)
+      described_class.track_epic_task_checked(**params)
+    end
+
+    it_behaves_like 'a daily tracked issuable event' do
+      let(:action) { described_class::EPIC_TASK_CHECKED }
+    end
+
+    it_behaves_like 'does not track when feature flag is disabled', :track_epics_activity
+  end
+
+  context 'for margin epic task as unchecked' do
+    def track_action(params)
+      described_class.track_epic_task_unchecked(**params)
+    end
+
+    it_behaves_like 'a daily tracked issuable event' do
+      let(:action) { described_class::EPIC_TASK_UNCHECKED }
+    end
+
+    it_behaves_like 'does not track when feature flag is disabled', :track_epics_activity
+  end
 end

ee/spec/services/epics/update_service_spec.rb

@@ -317,7 +317,7 @@ RSpec.describe Epics::UpdateService do
 
     context 'when Epic has tasks' do
       before do
-        update_epic({ description: "- [ ] Task 1\n- [ ] Task 2" })
+        update_epic(description: "- [ ] Task 1\n- [ ] Task 2")
       end
 
       it { expect(epic.tasks?).to eq(true) }
@@ -329,11 +329,9 @@ RSpec.describe Epics::UpdateService do
       end
 
       context 'when tasks are marked as completed' do
-        before do
-          update_epic({ description: "- [x] Task 1\n- [X] Task 2" })
-        end
-
         it 'creates system note about task status change' do
+          update_epic(description: "- [x] Task 1\n- [X] Task 2")
+
           note1 = find_note('marked the task **Task 1** as completed')
           note2 = find_note('marked the task **Task 2** as completed')
 
@@ -343,15 +341,23 @@ RSpec.describe Epics::UpdateService do
           description_notes = find_notes('description')
           expect(description_notes.length).to eq(1)
         end
+
+        it 'counts the change correctly' do
+          expect(Gitlab::UsageDataCounters::EpicActivityUniqueCounter).to receive(:track_epic_task_checked)
+            .with(author: user).twice
+
+          update_epic(description: "- [x] Task 1\n- [X] Task 2")
+        end
       end
 
       context 'when tasks are marked as incomplete' do
         before do
-          update_epic({ description: "- [x] Task 1\n- [X] Task 2" })
-          update_epic({ description: "- [ ] Task 1\n- [ ] Task 2" })
+          update_epic(description: "- [x] Task 1\n- [X] Task 2")
         end
 
         it 'creates system note about task status change' do
+          update_epic(description: "- [ ] Task 1\n- [ ] Task 2")
+
           note1 = find_note('marked the task **Task 1** as incomplete')
           note2 = find_note('marked the task **Task 2** as incomplete')
 
@@ -361,6 +367,13 @@ RSpec.describe Epics::UpdateService do
           description_notes = find_notes('description')
           expect(description_notes.length).to eq(1)
         end
+
+        it 'counts the change correctly' do
+          expect(Gitlab::UsageDataCounters::EpicActivityUniqueCounter).to receive(:track_epic_task_unchecked)
+            .with(author: user).twice
+
+          update_epic(description: "- [ ] Task 1\n- [ ] Task 2")
+        end
       end
     end
 

lib/gitlab/usage_data_counters/known_events/epic_events.yml

@@ -9,6 +9,20 @@
   aggregation: daily
   feature_flag: track_epics_activity
 
+# content change events
+
+- name: project_management_users_unchecking_epic_task
+  category: epics_usage
+  redis_slot: project_management
+  aggregation: daily
+  feature_flag: track_epics_activity
+
+- name: project_management_users_checking_epic_task
+  category: epics_usage
+  redis_slot: project_management
+  aggregation: daily
+  feature_flag: track_epics_activity
+
 - name: g_project_management_users_updating_epic_titles
   category: epics_usage
   redis_slot: project_management