Document database review process

See https://gitlab.com/gitlab-com/gl-infra/infrastructure/issues/6069

1 files changed, 26 insertions, 0 deletions

diff --git a/lib/gitlab/danger/helper.rb b/lib/gitlab/danger/helper.rb
index 0fc145534bf..c0a12318990 100644
--- a/lib/gitlab/danger/helper.rb
+++ b/lib/gitlab/danger/helper.rb
@@ -46,6 +46,16 @@ module Gitlab
         ee? ? 'gitlab-ee' : 'gitlab-ce'
       end
 
+      def markdown_list(items)
+        list = items.map { |item| "* `#{item}`" }.join("\n")
+
+        if items.size > 10
+          "\n<details>\n\n#{list}\n\n</details>\n"
+        else
+          list
+        end
+      end
+
       # @return [Hash<String,Array<String>>]
       def changes_by_category
         all_changed_files.each_with_object(Hash.new { |h, k| h[k] = [] }) do |file, hash|
@@ -132,6 +142,22 @@ module Gitlab
       def new_teammates(usernames)
         usernames.map { |u| Gitlab::Danger::Teammate.new('username' => u) }
       end
+
+      def missing_database_labels(current_mr_labels)
+        labels = if has_database_scoped_labels?(current_mr_labels)
+                   ['database']
+                 else
+                   ['database', 'database::review pending']
+                 end
+
+        labels - current_mr_labels
+      end
+
+      private
+
+      def has_database_scoped_labels?(current_mr_labels)
+        current_mr_labels.any? { |label| label.start_with?('database::') }
+      end
     end
   end
 end