ProcessorFactory.php

<?php

class ProcessorFactory
{
    public function __invoke(ContainerInterface $container)
    {
        $processor = new Processor(
            $container->get(Schema::class)
        );
        $processor->getExecutionContext()->getContainer()->set(
            ContainerInterface::class,
            $container
        );

        return $processor;
    }
}

ServiceLocatorAwareTrait.php

<?php

trait ServiceLocatorAwareTrait
{
    /**
     * @param ResolveInfo $info
     * @return ContainerInterface
     */
    protected function getServiceLocator(ResolveInfo $info)
    {
        return $info->getContainer()->get(ContainerInterface::class);
    }
}