Merge branch 'master' into 'docs/fix-example-dot-net'

# Conflicts:
#   doc/user/project/clusters/serverless/index.md

1 files changed, 27 insertions, 0 deletions

diff --git a/app/services/concerns/validates_classification_label.rb b/app/services/concerns/validates_classification_label.rb
new file mode 100644
index 00000000000..ebcf5c24ff8
--- /dev/null
+++ b/app/services/concerns/validates_classification_label.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+module ValidatesClassificationLabel
+  def validate_classification_label(record, attribute_name)
+    return unless ::Gitlab::ExternalAuthorization.enabled?
+    return unless classification_label_change?(record, attribute_name)
+
+    new_label = params[attribute_name].presence
+    new_label ||= ::Gitlab::CurrentSettings.current_application_settings
+                    .external_authorization_service_default_label
+
+    unless ::Gitlab::ExternalAuthorization.access_allowed?(current_user, new_label)
+      reason = rejection_reason_for_label(new_label)
+      message = s_('ClassificationLabelUnavailable|is unavailable: %{reason}') % { reason: reason }
+      record.errors.add(attribute_name, message)
+    end
+  end
+
+  def rejection_reason_for_label(label)
+    reason_from_service = ::Gitlab::ExternalAuthorization.rejection_reason(current_user, label).presence
+    reason_from_service || _("Access to '%{classification_label}' not allowed") % { classification_label: label }
+  end
+
+  def classification_label_change?(record, attribute_name)
+    params.key?(attribute_name) || record.new_record?
+  end
+end