Add latest changes from gitlab-org/gitlab@master

1 files changed, 31 insertions, 0 deletions

diff --git a/app/services/merge_requests/link_lfs_objects_service.rb b/app/services/merge_requests/link_lfs_objects_service.rb
new file mode 100644
index 00000000000..191da594095
--- /dev/null
+++ b/app/services/merge_requests/link_lfs_objects_service.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+module MergeRequests
+  class LinkLfsObjectsService < ::BaseService
+    def execute(merge_request, oldrev: merge_request.diff_base_sha, newrev: merge_request.diff_head_sha)
+      return if merge_request.source_project == project
+      return if no_changes?(oldrev, newrev)
+
+      new_lfs_oids = lfs_oids(merge_request.source_project.repository, oldrev, newrev)
+
+      return if new_lfs_oids.empty?
+
+      Projects::LfsPointers::LfsLinkService
+        .new(project)
+        .execute(new_lfs_oids)
+    end
+
+    private
+
+    def no_changes?(oldrev, newrev)
+      oldrev == newrev
+    end
+
+    def lfs_oids(source_repository, oldrev, newrev)
+      Gitlab::Git::LfsChanges
+        .new(source_repository, newrev)
+        .new_pointers(not_in: [oldrev])
+        .map(&:lfs_oid)
+    end
+  end
+end