1 files changed, 53 insertions, 0 deletions
diff --git a/qa/qa/support/fabrication_tracker.rb b/qa/qa/support/fabrication_tracker.rb
new file mode 100644
index 00000000000..3238cc5b0db
--- /dev/null
+++ b/qa/qa/support/fabrication_tracker.rb
@@ -0,0 +1,53 @@
+# frozen_string_literal: true
+
+module QA
+  module Support
+    # Threadsafe fabrication time tracker
+    #
+    # Ongoing fabrication is added to callstack by start_fabrication and taken out by finish_fabrication
+    #
+    # Fabrication runtime is saved only for the first fabrication in the stack to properly represent the real time
+    # fabrications might take as top level fabrication runtime will always include nested fabrications runtime
+    #
+    class FabricationTracker
+      class << self
+        # Start fabrication and increment ongoing fabrication count
+        #
+        # @return [void]
+        def start_fabrication
+          Thread.current[:fabrications_ongoing] = 0 unless Thread.current.key?(:fabrications_ongoing)
+
+          Thread.current[:fabrications_ongoing] += 1
+        end
+
+        # Finish fabrication and decrement ongoing fabrication count
+        #
+        # @return [void]
+        def finish_fabrication
+          Thread.current[:fabrications_ongoing] -= 1
+        end
+
+        # Save fabrication time if it's first in fabrication stack
+        #
+        # @param [Symbol] type
+        # @param [Symbol] time
+        # @return [void]
+        def save_fabrication(type, time)
+          return unless Thread.current.key?(type)
+          return unless top_level_fabrication?
+
+          Thread.current[type] += time
+        end
+
+        private
+
+        # Check if current fabrication is the only one in the stack
+        #
+        # @return [Boolean]
+        def top_level_fabrication?
+          Thread.current[:fabrications_ongoing] == 1
+        end
+      end
+    end
+  end
+end