Migrate only AttachmentUploader note uploads

- keep uploads for other models as they are

lib/gitlab/background_migration/legacy_upload_mover.rb

@@ -18,6 +18,7 @@ module Gitlab
 
       def execute
         return unless upload
+        return unless upload.model_type == 'Note'
 
         if !project
           # if we don't have models associated with the upload we can not move it

lib/gitlab/background_migration/legacy_uploads_migrator.rb

@@ -14,7 +14,7 @@ module Gitlab
       include Database::MigrationHelpers
 
       def perform(start_id, end_id)
-        Upload.where(id: start_id..end_id, uploader: 'AttachmentUploader').find_each do |upload|
+        Upload.where(id: start_id..end_id, uploader: 'AttachmentUploader', model_type: 'Note').find_each do |upload|
           LegacyUploadMover.new(upload).execute
         end
       end

lib/tasks/gitlab/uploads/legacy.rake

@@ -15,7 +15,7 @@ namespace :gitlab do
         batch_size = 5000
         delay_interval = 5.minutes.to_i
 
-        Upload.where(uploader: 'AttachmentUploader').each_batch(of: batch_size) do |relation, index|
+        Upload.where(uploader: 'AttachmentUploader', model_type: 'Note').each_batch(of: batch_size) do |relation, index|
           start_id, end_id = relation.pluck('MIN(id), MAX(id)').first
           delay = index * delay_interval
 

spec/lib/gitlab/background_migration/legacy_upload_mover_spec.rb

@@ -91,15 +91,26 @@ describe Gitlab::BackgroundMigration::LegacyUploadMover do
     end
   end
 
-  context 'when no model found for the upload' do
+  context 'when no note found for the upload' do
     before do
-      legacy_upload.model = nil
+      legacy_upload.model_id = nil
+      legacy_upload.model_type = 'Note'
       expect_error_log
     end
 
     it_behaves_like 'legacy upload deletion'
   end
 
+  context 'when upload does not belong to a note' do
+    before do
+      legacy_upload.model = create(:appearance)
+    end
+
+    it 'does not remove the upload' do
+      expect { described_class.new(legacy_upload).execute }.not_to change { Upload.count }
+    end
+  end
+
   context 'when the upload move fails' do
     before do
       expect(FileUploader).to receive(:copy_to).and_raise('failed')

spec/lib/gitlab/background_migration/legacy_uploads_migrator_spec.rb

@@ -35,6 +35,8 @@ describe Gitlab::BackgroundMigration::LegacyUploadsMigrator do
   let!(:legacy_upload_no_file) { create_upload(note2, false) }
   let!(:legacy_upload_legacy_project) { create_upload(note_legacy) }
 
+  let!(:appearance) { create(:appearance, :with_logo) }
+
   let(:start_id) { 1 }
   let(:end_id) { 10000 }
 
@@ -52,12 +54,18 @@ describe Gitlab::BackgroundMigration::LegacyUploadsMigrator do
     expect(File.exist?(legacy_upload_legacy_project.absolute_path)).to be_falsey
   end
 
-  it 'removes all AttachmentUploader records' do
-    expect { subject }.to change { Upload.where(uploader: 'AttachmentUploader').count }.from(3).to(0)
+  it 'removes all Note AttachmentUploader records' do
+    expect { subject }.to change { Upload.where(uploader: 'AttachmentUploader').count }.from(4).to(1)
   end
 
   it 'creates new uploads for successfully migrated records' do
     expect { subject }.to change { Upload.where(uploader: 'FileUploader').count }.from(0).to(2)
   end
+
+  it 'does not remove appearance uploads' do
+    subject
+
+    expect(appearance.logo.file).to exist
+  end
 end
 # rubocop: enable RSpec/FactoriesInMigrationSpecs