Initial field and query complexity limits

It makes all Types::BaseField default to a complexity of 1.

Queries themselves now have limited complexity, scaled
to the type of user: no user, authenticated user, or an
admin user.

1 files changed, 18 insertions, 0 deletions

diff --git a/lib/gitlab/graphql/query_analyzers/log_query_complexity.rb b/lib/gitlab/graphql/query_analyzers/log_query_complexity.rb
new file mode 100644
index 00000000000..95db130dbfc
--- /dev/null
+++ b/lib/gitlab/graphql/query_analyzers/log_query_complexity.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Graphql
+    module QueryAnalyzers
+      class LogQueryComplexity
+        class << self
+          def analyzer
+            GraphQL::Analysis::QueryComplexity.new do |query, complexity|
+              # temporary until https://gitlab.com/gitlab-org/gitlab-ce/issues/59587
+              Rails.logger.info("[GraphQL Query Complexity] #{complexity}  | admin? #{query.context[:current_user]&.admin?}")
+            end
+          end
+        end
+      end
+    end
+  end
+end