1 files changed, 45 insertions, 0 deletions
diff --git a/app/uploaders/design_management/design_v432x230_uploader.rb b/app/uploaders/design_management/design_v432x230_uploader.rb
new file mode 100644
index 00000000000..ba48f381bbd
--- /dev/null
+++ b/app/uploaders/design_management/design_v432x230_uploader.rb
@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+module DesignManagement
+  # This Uploader is used to generate and serve the smaller versions of
+  # the design files.
+  #
+  # The original (full-sized) design files are stored in Git LFS, and so
+  # have a different uploader, `LfsObjectUploader`.
+  class DesignV432x230Uploader < GitlabUploader
+    include CarrierWave::MiniMagick
+    include RecordsUploads::Concern
+    include ObjectStorage::Concern
+    prepend ObjectStorage::Extension::RecordsUploads
+
+    # We choose not to resize `image/ico` as we assume there will be no
+    # benefit in generating an 432x230 sized icon.
+    #
+    # We currently cannot resize `image/tiff`.
+    # See https://gitlab.com/gitlab-org/gitlab/issues/207740
+    #
+    # We currently choose not to resize `image/svg+xml` for security reasons.
+    # See https://gitlab.com/gitlab-org/gitlab/issues/207740#note_302766171
+    MIME_TYPE_WHITELIST = %w(image/png image/jpeg image/bmp image/gif).freeze
+
+    process resize_to_fit: [432, 230]
+
+    # Allow CarrierWave to reject files without correct mimetypes.
+    def content_type_whitelist
+      MIME_TYPE_WHITELIST
+    end
+
+    # Override `GitlabUploader` and always return false, otherwise local
+    # `LfsObject` files would be deleted.
+    # https://github.com/carrierwaveuploader/carrierwave/blob/f84672a/lib/carrierwave/uploader/cache.rb#L131-L135
+    def move_to_cache
+      false
+    end
+
+    private
+
+    def dynamic_segment
+      File.join(model.class.underscore, mounted_as.to_s, model.id.to_s)
+    end
+  end
+end