1 files changed, 45 insertions, 0 deletions
diff --git a/lib/gitlab/graphql/known_operations.rb b/lib/gitlab/graphql/known_operations.rb
new file mode 100644
index 00000000000..ead52935945
--- /dev/null
+++ b/lib/gitlab/graphql/known_operations.rb
@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Graphql
+    class KnownOperations
+      Operation = Struct.new(:name) do
+        def to_caller_id
+          "graphql:#{name}"
+        end
+
+        def query_urgency
+          # We'll be able to actually correlate query_urgency with https://gitlab.com/gitlab-org/gitlab/-/issues/345141
+          ::Gitlab::EndpointAttributes::DEFAULT_URGENCY
+        end
+      end
+
+      ANONYMOUS = Operation.new("anonymous").freeze
+      UNKNOWN = Operation.new("unknown").freeze
+
+      def self.default
+        @default ||= self.new(Gitlab::Webpack::GraphqlKnownOperations.load)
+      end
+
+      def initialize(operation_names)
+        @operation_hash = operation_names
+          .map { |name| Operation.new(name).freeze }
+          .concat([ANONYMOUS, UNKNOWN])
+          .index_by(&:name)
+      end
+
+      # Returns the known operation from the given ::GraphQL::Query object
+      def from_query(query)
+        operation_name = query.selected_operation_name
+
+        return ANONYMOUS unless operation_name
+
+        @operation_hash[operation_name] || UNKNOWN
+      end
+
+      def operations
+        @operation_hash.values
+      end
+    end
+  end
+end