Allow configuring Rails GraphQL timeout

config/initializers/1_settings.rb

@@ -192,6 +192,7 @@ Settings.gitlab['username_changing_enabled'] = true if Settings.gitlab['username
 Settings.gitlab['issue_closing_pattern'] = '\b((?:[Cc]los(?:e[sd]?|ing)|\b[Ff]ix(?:e[sd]|ing)?|\b[Rr]esolv(?:e[sd]?|ing)|\b[Ii]mplement(?:s|ed|ing)?)(:?) +(?:(?:issues? +)?%{issue_ref}(?:(?: *,? +and +| *,? *)?)|([A-Z][A-Z0-9_]+-\d+))+)' if Settings.gitlab['issue_closing_pattern'].nil?
 Settings.gitlab['default_projects_features'] ||= {}
 Settings.gitlab['webhook_timeout'] ||= 10
+Settings.gitlab['graphql_timeout'] ||= 30
 Settings.gitlab['max_attachment_size'] ||= 10
 Settings.gitlab['session_expire_delay'] ||= 10080
 Settings.gitlab['unauthenticated_session_expire_delay'] ||= 2.hours.to_i

config/initializers/graphql.rb

@@ -7,7 +7,7 @@ GraphQL::Schema::Object.accepts_definition(:authorize)
 GraphQL::Schema::Field.accepts_definition(:authorize)
 
 Gitlab::Application.config.after_initialize do
-  GitlabSchema.middleware << GraphQL::Schema::TimeoutMiddleware.new(max_seconds: ENV.fetch('GITLAB_RAILS_GRAPHQL_TIMEOUT', 30).to_i) do |timeout_error, query|
+  GitlabSchema.middleware << GraphQL::Schema::TimeoutMiddleware.new(max_seconds: Gitlab.config.gitlab.graphql_timeout) do |timeout_error, query|
     Gitlab::GraphqlLogger.error(message: timeout_error.to_s, query: query.query_string, query_variables: query.provided_variables)
   end
 end