fixed pipeline notes issue

app/models/ci/pipeline.rb

@@ -170,6 +170,19 @@ module Ci
       builds.where.not(environment: nil).success.pluck(:environment).uniq
     end
 
+    # Manually set the notes for a Ci::Pipeline
+    # There is no ActiveRecord relation between Ci::Pipeline and notes
+    # as they are related to a commit sha. This method helps importing
+    # them using the +Gitlab::ImportExport::RelationFactory+ class.
+    def notes=(notes)
+      notes.each do |note|
+        note[:id] = nil
+        note[:commit_id] = sha
+        note[:noteable_id] = self['id']
+        note.save!
+      end
+    end
+
     def notes
       Note.for_commit_id(sha)
     end

spec/lib/gitlab/import_export/project.json

@@ -4894,6 +4894,29 @@
       "started_at": null,
       "finished_at": null,
       "duration": null,
+      "notes": [
+        {
+          "id": 999,
+          "note": "Natus rerum qui dolorem dolorum voluptas.",
+          "noteable_type": "Commit",
+          "author_id": 1,
+          "created_at": "2016-03-22T15:19:59.469Z",
+          "updated_at": "2016-03-22T15:19:59.469Z",
+          "project_id": 5,
+          "attachment": {
+            "url": null
+          },
+          "line_code": null,
+          "commit_id": "be93687618e4b132087f430a4d8fc3a609c9b77c",
+          "noteable_id": 36,
+          "system": false,
+          "st_diff": null,
+          "updated_by_id": null,
+          "author": {
+            "name": "Administrator"
+          }
+        }
+      ],
       "statuses": [
         {
           "id": 71,

spec/lib/gitlab/import_export/project_tree_restorer_spec.rb

@@ -18,6 +18,12 @@ describe Gitlab::ImportExport::ProjectTreeRestorer, services: true do
       it 'restores models based on JSON' do
         expect(restored_project_json).to be true
       end
+
+      it 'creates a valid pipeline note' do
+        restored_project_json
+
+        expect(Ci::Pipeline.first.notes).not_to be_empty
+      end
     end
   end
 end