Geo: Fix attachments/avatars saving to the wrong directory

Closes #3634

changelogs/unreleased-ee/sh-fix-geo-file-transfers.yml

+---
+title: 'Geo: Fix attachments/avatars saving to the wrong directory'
+merge_request:
+author:
+type: fixed

lib/gitlab/geo/file_transfer.rb

@@ -2,9 +2,11 @@ module Gitlab
   module Geo
     class FileTransfer < Transfer
       def initialize(file_type, upload)
+        uploader = upload.uploader.constantize
+
         @file_type = file_type
         @file_id = upload.id
-        @filename = upload.path
+        @filename = uploader.absolute_path(upload)
         @request_data = build_request_data(upload)
       end

spec/lib/gitlab/geo/file_transfer_spec.rb

+require 'spec_helper'
+
+describe Gitlab::Geo::FileTransfer do
+  let(:user) { create(:user, avatar: fixture_file_upload(Rails.root + 'spec/fixtures/dk.png', 'image/png')) }
+  let(:upload) { Upload.find_by(model: user, uploader: 'AvatarUploader') }
+
+  subject { described_class.new(:file, upload) }
+
+  describe '#execute' do
+    context 'user avatar' do
+      it 'sets an absolute path' do
+        expect(subject.file_type).to eq(:file)
+        expect(subject.file_id).to eq(upload.id)
+        expect(subject.filename).to eq(AvatarUploader.absolute_path(upload))
+        expect(Pathname.new(subject.filename).absolute?).to be_truthy
+        expect(subject.request_data).to eq({ id: upload.id,
+                                             type: 'User',
+                                             checksum: upload.checksum })
+      end
+    end
+  end
+end