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typo3/sysext/install/Classes/Updates/DatabaseUpdatedPrerequisite.php

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+<?php
+declare(strict_types = 1);
+
+namespace TYPO3\CMS\Install\Updates;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+use Symfony\Component\Console\Output\OutputInterface;
+use TYPO3\CMS\Install\Service\UpgradeWizardsService;
+
+/**
+ * Prerequisite for upgrade wizards to ensure the database is up-to-date
+ *
+ * @internal
+ */
+class DatabaseUpdatedPrerequisite implements PrerequisiteInterface, ChattyInterface
+{
+    /**
+     * @var UpgradeWizardsService
+     */
+    protected $upgradeWizardsService;
+    /**
+     * @var OutputInterface
+     */
+    protected $output;
+
+    public function __construct()
+    {
+        $this->upgradeWizardsService = new UpgradeWizardsService();
+    }
+
+    /**
+     * @return string
+     */
+    public function getTitle(): string
+    {
+        return 'Database Up-to-Date';
+    }
+
+    /**
+     */
+    public function ensure(): bool
+    {
+        $adds = $this->upgradeWizardsService->getBlockingDatabaseAdds();
+        $result = null;
+        if (count($adds) > 0) {
+            $this->output->writeln('Performing ' . count($adds) . ' database operations.');
+            $result = $this->upgradeWizardsService->addMissingTablesAndFields();
+        }
+        return $result === null;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isFulfilled(): bool
+    {
+        $adds = $this->upgradeWizardsService->getBlockingDatabaseAdds();
+        return count($adds) === 0;
+    }
+
+    /**
+     * @param OutputInterface $output
+     */
+    public function setOutput(OutputInterface $output): void
+    {
+        $this->output = $output;
+    }
+}