[TASK] Make driver registry TCA change cacheable

Instead of calling the driver registry on every request,
we can cache the TCA addition, by putting the call into overrides.

Resolves: #76102
Releases: 7.6, master
Change-Id: I8cfc72f0e7dbb133eecc754fd3cb774637a0d4bf
Reviewed-on: https://review.typo3.org/48047


Reviewed-by: Nicole Cordes <typo3@cordes.co>
Tested-by: Nicole Cordes <typo3@cordes.co>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>

typo3/sysext/core/Classes/Resource/Driver/DriverRegistry.php

@@ -87,10 +87,6 @@ class DriverRegistry implements \TYPO3\CMS\Core\SingletonInterface
      */
     public function addDriversToTCA()
     {
-        // Add driver to TCA of sys_file_storage
-        if (TYPO3_MODE !== 'BE') {
-            return;
-        }
         $driverFieldConfig = &$GLOBALS['TCA']['sys_file_storage']['columns']['driver']['config'];
         $configurationFieldConfig = &$GLOBALS['TCA']['sys_file_storage']['columns']['configuration']['config'];
         foreach ($this->driverConfigurations as $driver) {

typo3/sysext/core/Configuration/TCA/Overrides/sys_file_storage.php

+<?php
+defined('TYPO3_MODE') || die();
+
+\TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Core\Resource\Driver\DriverRegistry::class)->addDriversToTCA();

typo3/sysext/core/ext_tables.php

@@ -40,10 +40,6 @@ $GLOBALS['PAGES_TYPES'] = array(
 
 \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::allowTableOnStandardPages('sys_category,sys_file_reference,sys_file_collection');
 
-/** @var \TYPO3\CMS\Core\Resource\Driver\DriverRegistry $registry */
-$registry = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Core\Resource\Driver\DriverRegistry::class);
-$registry->addDriversToTCA();
-
 /**
  * $TBE_MODULES contains the structure of the backend modules as they are
  * arranged in main- and sub-modules. Every entry in this array represents a