From 3994bce90d0e7c6638953044942ff4af35890a7a Mon Sep 17 00:00:00 2001
From: Jonathan Baker <jonathan.baker@shopify.com>
Date: Wed, 5 Nov 2025 16:51:10 -0500
Subject: [PATCH 1/2] Add rudimentary default resolver tracker.

---
 lib/graphql/schema/field.rb                   | 11 +++++++++
 .../schema/field/default_resolver_tracker.rb  | 23 +++++++++++++++++++
 2 files changed, 34 insertions(+)
 create mode 100644 lib/graphql/schema/field/default_resolver_tracker.rb

diff --git a/lib/graphql/schema/field.rb b/lib/graphql/schema/field.rb
index 98cf087d06b..d29d62edfbb 100644
--- a/lib/graphql/schema/field.rb
+++ b/lib/graphql/schema/field.rb
@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 require "graphql/schema/field/connection_extension"
 require "graphql/schema/field/scope_extension"
+require "graphql/schema/field/default_resolver_tracker"
 
 module GraphQL
   class Schema
@@ -737,7 +738,10 @@ def resolve(object, args, query_ctx)
 
               inner_object = obj.object
 
+              tracker = query_ctx[:default_resolver_tracker]
+
               if !NOT_CONFIGURED.equal?(@hash_key)
+                tracker&.track(self, :hash_key)
                 hash_value = if inner_object.is_a?(Hash)
                   inner_object.key?(@hash_key) ? inner_object[@hash_key] : inner_object[@hash_key_str]
                 elsif inner_object.respond_to?(:[])
@@ -751,6 +755,7 @@ def resolve(object, args, query_ctx)
                   hash_value || (@fallback_value != NOT_CONFIGURED ? @fallback_value : nil)
                 end
               elsif obj.respond_to?(resolver_method)
+                tracker&.track(self, :resolver_method)
                 method_to_call = resolver_method
                 method_receiver = obj
                 # Call the method with kwargs, if there are any
@@ -761,17 +766,22 @@ def resolve(object, args, query_ctx)
                 end
               elsif inner_object.is_a?(Hash)
                 if @dig_keys
+                  tracker&.track(self, :hash_dig_keys)
                   inner_object.dig(*@dig_keys)
                 elsif inner_object.key?(@method_sym)
+                  tracker&.track(self, :hash_method_sym)
                   inner_object[@method_sym]
                 elsif inner_object.key?(@method_str) || !inner_object.default_proc.nil?
+                  tracker&.track(self, :hash_method_str)
                   inner_object[@method_str]
                 elsif @fallback_value != NOT_CONFIGURED
+                  tracker&.track(self, :hash_fallback)
                   @fallback_value
                 else
                   nil
                 end
               elsif inner_object.respond_to?(@method_sym)
+                tracker&.track(self, :send_method_sym)
                 method_to_call = @method_sym
                 method_receiver = obj.object
                 if !ruby_kwargs.empty?
@@ -780,6 +790,7 @@ def resolve(object, args, query_ctx)
                   inner_object.public_send(@method_sym)
                 end
               elsif @fallback_value != NOT_CONFIGURED
+                tracker&.track(self, :fallback)
                 @fallback_value
               else
                 raise <<-ERR
diff --git a/lib/graphql/schema/field/default_resolver_tracker.rb b/lib/graphql/schema/field/default_resolver_tracker.rb
new file mode 100644
index 00000000000..31cae94ff31
--- /dev/null
+++ b/lib/graphql/schema/field/default_resolver_tracker.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+module GraphQL
+  class Schema
+    class Field
+      class DefaultResolverTracker
+        attr_reader :counts_by_field
+
+        def initialize
+          @counts_by_field = Hash.new do |h, k|
+            h[k] = Hash.new do |h2, k2|
+              h2[k2] = 0
+            end
+          end
+        end
+
+        def track(field, strategy)
+          @counts_by_field[field.path][strategy] += 1
+        end
+      end
+    end
+  end
+end

From 1902327c8a0dd9a287cc8772bffbc942ab64582b Mon Sep 17 00:00:00 2001
From: Jonathan Baker <jonathan.baker@shopify.com>
Date: Fri, 7 Nov 2025 14:37:50 -0500
Subject: [PATCH 2/2] Track usage by strategy

---
 lib/graphql/schema/field/default_resolver_tracker.rb | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/graphql/schema/field/default_resolver_tracker.rb b/lib/graphql/schema/field/default_resolver_tracker.rb
index 31cae94ff31..21ac1ae450c 100644
--- a/lib/graphql/schema/field/default_resolver_tracker.rb
+++ b/lib/graphql/schema/field/default_resolver_tracker.rb
@@ -5,6 +5,7 @@ class Schema
     class Field
       class DefaultResolverTracker
         attr_reader :counts_by_field
+        attr_reader :strategy_by_field
 
         def initialize
           @counts_by_field = Hash.new do |h, k|
@@ -12,10 +13,14 @@ def initialize
               h2[k2] = 0
             end
           end
+          @strategy_by_field = Hash.new do |h, k|
+            h[k] = Set.new
+          end
         end
 
         def track(field, strategy)
           @counts_by_field[field.path][strategy] += 1
+          @strategy_by_field[strategy] << field.path
         end
       end
     end