DependencyResolver.php

Go to the documentation of this file.

<?php
namespace ‪TYPO3\CMS\Core\Package;
 
/*
 * 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 ‪TYPO3\CMS\Core\Service\DependencyOrderingService;
use ‪TYPO3\CMS\Core\Utility\GeneralUtility;
 
class ‪DependencyResolver
{
    protected ‪$dependencyOrderingService;
 
    public function ‪injectDependencyOrderingService(‪DependencyOrderingService ‪$dependencyOrderingService)
    {
        $this->dependencyOrderingService = ‪$dependencyOrderingService;
    }
 
    public function ‪sortPackageStatesConfigurationByDependency(array $packageStatesConfiguration)
    {
        trigger_error(self::class . ' will be removed in TYPO3 v10.0.', E_USER_DEPRECATED);
        return $this->dependencyOrderingService->calculateOrder($this->‪buildDependencyGraph($packageStatesConfiguration));
    }
 
    protected function ‪convertConfigurationForGraph(array $packageStatesConfiguration, array $packageKeys)
    {
        $dependencies = [];
        foreach ($packageKeys as $packageKey) {
            if (!isset($packageStatesConfiguration[$packageKey]['dependencies']) && !isset($packageStatesConfiguration[$packageKey]['suggestions'])) {
                continue;
            }
            $dependencies[$packageKey] = [
                'after' => []
            ];
            if (isset($packageStatesConfiguration[$packageKey]['dependencies'])) {
                foreach ($packageStatesConfiguration[$packageKey]['dependencies'] as $dependentPackageKey) {
                    if (!in_array($dependentPackageKey, $packageKeys, true)) {
                        throw new \UnexpectedValueException(
                            'The package "' . $packageKey . '" depends on "'
                            . $dependentPackageKey . '" which is not present in the system.',
                            1382276561
                        );
                    }
                    $dependencies[$packageKey]['after'][] = $dependentPackageKey;
                }
            }
            if (isset($packageStatesConfiguration[$packageKey]['suggestions'])) {
                foreach ($packageStatesConfiguration[$packageKey]['suggestions'] as $suggestedPackageKey) {
                    // skip suggestions on not existing packages
                    if (in_array($suggestedPackageKey, $packageKeys, true)) {
                        // Suggestions actually have never been meant to influence loading order.
                        // We misuse this currently, as there is no other way to influence the loading order
                        // for not-required packages (soft-dependency).
                        // When considering suggestions for the loading order, we might create a cyclic dependency
                        // if the suggested package already has a real dependency on this package, so the suggestion
                        // has do be dropped in this case and must *not* be taken into account for loading order evaluation.
                        $dependencies[$packageKey]['after-resilient'][] = $suggestedPackageKey;
                    }
                }
            }
        }
        return $dependencies;
    }
 
    protected function ‪addDependencyToFrameworkToAllExtensions(array $packageStateConfiguration, array $rootPackageKeys)
    {
        $frameworkPackageKeys = $this->‪findFrameworkPackages($packageStateConfiguration);
        $extensionPackageKeys = array_diff(array_keys($packageStateConfiguration), $frameworkPackageKeys);
        foreach ($extensionPackageKeys as $packageKey) {
            // Remove framework packages from list
            $packageKeysWithoutFramework = array_diff(
                $packageStateConfiguration[$packageKey]['dependencies'],
                $frameworkPackageKeys
            );
            // The order of the array_merge is crucial here,
            // we want the framework first
            $packageStateConfiguration[$packageKey]['dependencies'] = array_merge(
                $rootPackageKeys,
                $packageKeysWithoutFramework
            );
        }
        return $packageStateConfiguration;
    }
 
    protected function ‪buildDependencyGraph(array $packageStateConfiguration)
    {
        $frameworkPackageKeys = $this->‪findFrameworkPackages($packageStateConfiguration);
        $frameworkPackagesDependencyGraph = $this->dependencyOrderingService->buildDependencyGraph($this->‪convertConfigurationForGraph($packageStateConfiguration, $frameworkPackageKeys));
        $packageStateConfiguration = $this->‪addDependencyToFrameworkToAllExtensions($packageStateConfiguration, $this->dependencyOrderingService->findRootIds($frameworkPackagesDependencyGraph));
 
        $packageKeys = array_keys($packageStateConfiguration);
        return $this->dependencyOrderingService->buildDependencyGraph($this->‪convertConfigurationForGraph($packageStateConfiguration, $packageKeys));
    }
 
    protected function ‪findFrameworkPackages(array $packageStateConfiguration)
    {
        $frameworkPackageKeys = [];
        $packageManager = GeneralUtility::makeInstance(PackageManager::class);
        foreach ($packageStateConfiguration as $packageKey => $packageConfiguration) {
            $package = $packageManager->getPackage($packageKey);
            if ($package->getValueFromComposerManifest('type') === 'typo3-cms-framework') {
                $frameworkPackageKeys[] = $packageKey;
            }
        }
 
        return $frameworkPackageKeys;
    }
}