Add epic's note system_note_meta to import/export

  - Add system_note_metadata to epic's notes Import/Export
    in order to accurately include it when migrating a group

Changelog: added
EE: true

ee/spec/fixtures/lib/gitlab/import_export/group_exports/light/group.json

@@ -362,6 +362,85 @@
           }
         }
       ]
+    },
+    {
+      "id": 17527,
+      "group_id": 1277,
+      "author_id": 1,
+      "assignee_id": null,
+      "iid": 3,
+      "updated_by_id": null,
+      "last_edited_by_id": null,
+      "lock_version": 0,
+      "start_date": null,
+      "end_date": null,
+      "last_edited_at": null,
+      "created_at": "2021-06-08T14:49:25.041Z",
+      "updated_at": "2021-06-08T14:49:43.877Z",
+      "title": "system notes",
+      "description": "system notes",
+      "start_date_sourcing_milestone_id": null,
+      "due_date_sourcing_milestone_id": null,
+      "start_date_fixed": null,
+      "due_date_fixed": null,
+      "start_date_is_fixed": false,
+      "due_date_is_fixed": false,
+      "closed_by_id": null,
+      "closed_at": null,
+      "parent_id": null,
+      "relative_position": null,
+      "state_id": "opened",
+      "start_date_sourcing_epic_id": null,
+      "due_date_sourcing_epic_id": null,
+      "confidential": false,
+      "external_key": null,
+      "notes": [
+        {
+          "id": 529568,
+          "note": "added epic u00261 as child epic",
+          "noteable_type": "Epic",
+          "author_id": 1,
+          "created_at": "2021-06-08T14:49:43.774Z",
+          "updated_at": "2021-06-08T14:49:43.811Z",
+          "project_id": null,
+          "attachment": {
+            "url": null
+          },
+          "line_code": null,
+          "commit_id": null,
+          "noteable_id": 17527,
+          "system": true,
+          "st_diff": null,
+          "updated_by_id": null,
+          "position": null,
+          "original_position": null,
+          "resolved_at": null,
+          "resolved_by_id": null,
+          "discussion_id": "63c7b8f0862ebde74eb806a2fd0d84bd53734730",
+          "change_position": null,
+          "resolved_by_push": null,
+          "review_id": null,
+          "confidential": null,
+          "last_edited_at": "2021-06-08T14:49:43.811Z",
+          "system_note_metadata": {
+            "id": 196422,
+            "note_id": 529568,
+            "commit_count": null,
+            "action": "relate_epic",
+            "created_at": "2021-06-08T14:49:43.843Z",
+            "updated_at": "2021-06-08T14:49:43.843Z",
+            "description_version_id": null
+          },
+          "author": {
+            "id": 1,
+            "email": "",
+            "created_at": "2021-04-14T14:42:15.926Z",
+            "updated_at": "2021-06-08T16:32:26.109Z",
+            "name": "Administrator"
+          },
+          "award_emoji": []
+        }
+      ]
     }
   ]
 }

ee/spec/fixtures/lib/gitlab/import_export/group_exports/light/tree/groups/761/epics.ndjson

 {"id":13622,"milestone_id":null,"group_id":4351,"author_id":1,"assignee_id":null,"iid":1,"updated_by_id":null,"last_edited_by_id":null,"lock_version":0,"start_date":null,"end_date":null,"last_edited_at":null,"created_at":"2019-11-20T17:02:09.754Z","updated_at":"2019-11-20T18:38:40.054Z","title":"Provident neque consequatur numquam ad laboriosam voluptatem magnam.","description":"Fugit nisi est ut numquam quia rerum vitae qui. Et in est aliquid voluptas et ut vitae. In distinctio voluptates ut deleniti iste.\n\nReiciendis eum sunt vero blanditiis at quia. Voluptate eum facilis illum ea distinctio maiores. Doloribus aut nemo ea distinctio.\n\nNihil cum distinctio voluptates quam. Laboriosam distinctio ea accusantium soluta perspiciatis nesciunt impedit. Id qui natus quis minima voluptatum velit ut reprehenderit. Molestiae quia est harum sapiente rem error architecto id. Et minus ipsa et ut ut.","start_date_sourcing_milestone_id":null,"due_date_sourcing_milestone_id":null,"start_date_fixed":null,"due_date_fixed":null,"start_date_is_fixed":null,"due_date_is_fixed":null,"closed_by_id":null,"closed_at":null,"parent_id":null,"relative_position":null,"state":"opened","start_date_sourcing_epic_id":null,"due_date_sourcing_epic_id":null,"notes":[{"id":44164,"note":"added epic &2 as child epic","noteable_type":"Epic","author_id":1,"created_at":"2019-11-20T18:38:26.689Z","updated_at":"2019-11-20T18:38:26.724Z","project_id":null,"attachment":{"url":null},"line_code":null,"commit_id":null,"noteable_id":13622,"system":true,"st_diff":null,"updated_by_id":null,"position":null,"original_position":null,"resolved_at":null,"resolved_by_id":null,"discussion_id":"133f0c3001860fa8d2031e398a65db74477378c4","change_position":null,"resolved_by_push":null,"review_id":null,"type":null,"author":{"name":"Administrator"},"award_emoji":[{"id":12,"name":"drum","user_id":1,"awardable_type":"Note","awardable_id":44170,"created_at":"2019-11-05T15:32:21.287Z","updated_at":"2019-11-05T15:32:21.287Z"}]}],"award_emoji":[{"id":12,"name":"thumbsup","user_id":1,"awardable_type":"Epic","awardable_id":13622,"created_at":"2019-11-05T15:37:21.287Z","updated_at":"2019-11-05T15:37:21.287Z"}],"label_links":[{"id":1,"label_id":2,"target_id":3,"target_type":"Epic","created_at":"2021-04-14 14:42:21.717503","updated_at":"2021-04-14 14:42:21.717503","label":{"title":"title","description":"description","color":"#cd2c5c","created_at":"2021-04-14 14:42:21.717503","updated_at":"2021-04-14 14:42:21.717503","type":"GroupLabel"}}]}
 {"id":13623,"milestone_id":null,"group_id":4351,"author_id":1,"assignee_id":null,"iid":2,"updated_by_id":null,"last_edited_by_id":null,"lock_version":0,"start_date":null,"end_date":null,"last_edited_at":null,"created_at":"2019-12-20T17:02:09.754Z","updated_at":"2019-12-20T18:38:40.054Z","title":"Provident neque consequatur numquam ad voluptatem magnam.","description":"Fugit nisi","start_date_sourcing_milestone_id":null,"due_date_sourcing_milestone_id":null,"start_date_fixed":null,"due_date_fixed":null,"start_date_is_fixed":null,"due_date_is_fixed":null,"closed_by_id":null,"closed_at":null,"parent_id":null,"relative_position":null,"state":"closed","start_date_sourcing_epic_id":null,"due_date_sourcing_epic_id":null,"notes":[],"label_links":[{"id":1,"label_id":2,"target_id":3,"target_type":"Epic","created_at":"2021-04-14 14:42:21.717503","updated_at":"2021-04-14 14:42:21.717503","label":{"title":"title","description":"description","color":"#cd2c5c","created_at":"2021-04-14 14:42:21.717503","updated_at":"2021-04-14 14:42:21.717503","type":"GroupLabel"}}]}
+{"id":17527,"group_id":1277,"author_id":1,"assignee_id":null,"iid":3,"updated_by_id":null,"last_edited_by_id":null,"lock_version":0,"start_date":null,"end_date":null,"last_edited_at":null,"created_at":"2021-06-08T14:49:25.041Z","updated_at":"2021-06-08T14:49:43.877Z","title":"system notes","description":"system notes","start_date_sourcing_milestone_id":null,"due_date_sourcing_milestone_id":null,"start_date_fixed":null,"due_date_fixed":null,"start_date_is_fixed":false,"due_date_is_fixed":false,"closed_by_id":null,"closed_at":null,"parent_id":null,"relative_position":null,"state_id":"opened","start_date_sourcing_epic_id":null,"due_date_sourcing_epic_id":null,"confidential":false,"external_key":null,"notes":[{"id":529568,"note":"added epic u00261 as child epic","noteable_type":"Epic","author_id":1,"created_at":"2021-06-08T14:49:43.774Z","updated_at":"2021-06-08T14:49:43.811Z","project_id":null,"attachment":{"url":null},"line_code":null,"commit_id":null,"noteable_id":17527,"system":true,"st_diff":null,"updated_by_id":null,"position":null,"original_position":null,"resolved_at":null,"resolved_by_id":null,"discussion_id":"63c7b8f0862ebde74eb806a2fd0d84bd53734730","change_position":null,"resolved_by_push":null,"review_id":null,"confidential":null,"last_edited_at":"2021-06-08T14:49:43.811Z","system_note_metadata":{"id":196422,"note_id":529568,"commit_count":null,"action":"relate_epic","created_at":"2021-06-08T14:49:43.843Z","updated_at":"2021-06-08T14:49:43.843Z","description_version_id":null},"author":{"id":1,"email":"","created_at":"2021-04-14T14:42:15.926Z","updated_at":"2021-06-08T16:32:26.109Z","name":"Administrator"},"award_emoji":[]}]}

ee/spec/lib/bulk_imports/groups/pipelines/epics_pipeline_spec.rb

@@ -6,7 +6,7 @@ RSpec.describe BulkImports::Groups::Pipelines::EpicsPipeline do
   let_it_be(:user) { create(:user) }
   let_it_be(:group) { create(:group) }
   let_it_be(:bulk_import) { create(:bulk_import, user: user) }
-  let_it_be(:filepath) { 'spec/fixtures/bulk_imports/epics.ndjson.gz' }
+  let_it_be(:filepath) { 'ee/spec/fixtures/bulk_imports/gz/epics.ndjson.gz' }
   let_it_be(:entity) do
     create(
       :bulk_import_entity,
@@ -32,19 +32,30 @@ RSpec.describe BulkImports::Groups::Pipelines::EpicsPipeline do
   subject { described_class.new(context) }
 
   describe '#run' do
-    it 'imports group epics into destination group' do
+    before do
       allow(Dir).to receive(:mktmpdir).and_return(tmpdir)
       allow_next_instance_of(BulkImports::FileDownloadService) do |service|
         allow(service).to receive(:execute)
       end
 
-      expect { subject.run }.to change(::Epic, :count).by(5)
+      subject.run
+    end
+
+    it 'imports group epics into destination group' do
+      expect(group.epics.count).to eq(6)
+    end
 
+    it 'imports epic award emoji' do
       expect(group.epics.first.award_emoji.first.name).to eq('thumbsup')
+    end
+
+    it 'imports epic notes' do
       expect(group.epics.first.state).to eq('opened')
       expect(group.epics.first.notes.count).to eq(4)
       expect(group.epics.first.notes.first.award_emoji.first.name).to eq('drum')
+    end
 
+    it 'imports epic labels' do
       label = group.epics.first.labels.first
 
       expect(group.epics.first.labels.count).to eq(1)
@@ -52,6 +63,13 @@ RSpec.describe BulkImports::Groups::Pipelines::EpicsPipeline do
       expect(label.description).to eq('description')
       expect(label.color).to eq('#cd2c5c')
     end
+
+    it 'imports epic system note metadata' do
+      note = group.epics.find_by_title('system notes').notes.first
+
+      expect(note.system).to eq(true)
+      expect(note.system_note_metadata.action).to eq('relate_epic')
+    end
   end
 
   describe '#load' do

ee/spec/lib/ee/gitlab/import_export/group/tree_restorer_spec.rb

@@ -21,26 +21,34 @@ RSpec.describe Gitlab::ImportExport::Group::TreeRestorer do
   describe 'restore group tree' do
     context 'epics' do
       it 'has group epics' do
-        expect(group.epics.count).to eq(2)
+        expect(group.epics.count).to eq(3)
       end
 
       it 'has award emoji' do
-        expect(group.epics.first.award_emoji.first.name).to eq('thumbsup')
+        expect(group.epics.find_by_iid(1).award_emoji.first.name).to eq('thumbsup')
       end
 
       it 'preserves epic state' do
-        expect(group.epics.first.state).to eq('opened')
-        expect(group.epics.last.state).to eq('closed')
+        expect(group.epics.find_by_iid(1).state).to eq('opened')
+        expect(group.epics.find_by_iid(2).state).to eq('closed')
+        expect(group.epics.find_by_iid(3).state).to eq('opened')
       end
     end
 
     context 'epic notes' do
       it 'has epic notes' do
-        expect(group.epics.first.notes.count).to eq(1)
+        expect(group.epics.find_by_iid(1).notes.count).to eq(1)
       end
 
       it 'has award emoji on epic notes' do
-        expect(group.epics.first.notes.first.award_emoji.first.name).to eq('drum')
+        expect(group.epics.find_by_iid(1).notes.first.award_emoji.first.name).to eq('drum')
+      end
+
+      it 'has system note metadata' do
+        note = group.epics.find_by_title('system notes').notes.first
+
+        expect(note.system).to eq(true)
+        expect(note.system_note_metadata.action).to eq('relate_epic')
       end
     end
 

lib/gitlab/import_export/group/import_export.yml

@@ -77,6 +77,7 @@ ee:
           - :award_emoji
           - events:
             - :push_event_payload
+          - :system_note_metadata
       - boards:
         - :board_assignee
         - :milestone