mirror of
https://github.com/moodle/moodle.git
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129 lines
4.2 KiB
PHP
129 lines
4.2 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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namespace core;
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use Psr\Container\ContainerInterface;
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/**
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* DI Container Helper.
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*
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* @package core
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* @copyright 2023 Andrew Lyons <andrew@nicols.co.uk>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class di {
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/** @var ContainerInterface The stored container */
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protected static ?ContainerInterface $container;
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/**
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* Get the DI Container.
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*
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* @return ContainerInterface
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*/
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public static function get_container(): ContainerInterface {
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if (!isset(self::$container)) {
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self::$container = self::create_container();
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}
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return self::$container;
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}
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/**
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* Reset the DI Container.
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*
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* This is primarily intended for Unit Testing, and for use in Scheduled tasks.
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*/
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public static function reset_container(): void {
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self::$container = null;
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}
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/**
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* Finds an entry of the container by its identifier and returns it.
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*
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* This is a shortcut helper for \core\di::get_container()->get($id).
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*
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* @param string $id Identifier of the entry to look for.
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* @return mixed Entry.
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*/
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public static function get(string $id): mixed {
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return self::get_container()->get($id);
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}
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/**
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* Set an entry in the container by its identifier.
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*
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* @param string $id Identifier of the entry to set
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* @param mixed $value The value to set
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*/
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public static function set(string $id, mixed $value): void {
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// Please note that the `set` method is not a part of the PSR-11 standard.
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// We currently make use of PHP-DI which does have this method, but its use is not guaranteed.
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// If Moodle switches to alternative DI resolution, this method _must_ be updated to work with it.
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/** @var \DI\Container */
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$container = self::get_container();
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$container->set($id, $value);
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}
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/**
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* Create a new Container Instance.
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*
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* @return ContainerInterface
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*/
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protected static function create_container(): ContainerInterface {
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global $CFG, $DB;
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// PHP Does not support function autoloading. We must manually include the file.
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require_once("{$CFG->libdir}/php-di/php-di/src/functions.php");
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// Configure the Container builder.
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$builder = new \DI\ContainerBuilder();
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// At the moment we are using autowiring, but not automatic attribute injection.
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// Automatic attribute injection is a php-di specific feature.
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$builder->useAutowiring(true);
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if (!$CFG->debugdeveloper) {
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// Enable compilation of the container and write proxies to disk in production.
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// See https://php-di.org/doc/performances.html for information.
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$cachedir = make_localcache_directory('di');
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$builder->enableCompilation($cachedir);
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$builder->writeProxiesToFile(true, $cachedir);
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}
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// Get the hook manager.
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$hookmanager = \core\hook\manager::get_instance();
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// Configure some basic definitions.
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$builder->addDefinitions([
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// The hook manager should be in the container.
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\core\hook\manager::class => $hookmanager,
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// The database.
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\moodle_database::class => $DB,
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// The string manager.
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\core_string_manager::class => fn() => get_string_manager(),
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]);
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// Add any additional definitions using hooks.
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$hookmanager->dispatch(new \core\hook\di_configuration($builder));
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// Build the container and return.
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return $builder->build();
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}
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}
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