1 files changed, 29 insertions, 0 deletions
diff --git a/lib/gitlab/ci/config/yaml.rb b/lib/gitlab/ci/config/yaml.rb
new file mode 100644
index 00000000000..de833619c8d
--- /dev/null
+++ b/lib/gitlab/ci/config/yaml.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Ci
+    class Config
+      module Yaml
+        AVAILABLE_TAGS = [Config::Yaml::Tags::Reference].freeze
+
+        class << self
+          def load!(content)
+            ensure_custom_tags
+
+            Gitlab::Config::Loader::Yaml.new(content, additional_permitted_classes: AVAILABLE_TAGS).load!
+          end
+
+          private
+
+          def ensure_custom_tags
+            @ensure_custom_tags ||= begin
+              AVAILABLE_TAGS.each { |klass| Psych.add_tag(klass.tag, klass) }
+
+              true
+            end
+          end
+        end
+      end
+    end
+  end
+end