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https://github.com/espocrm/espocrm.git
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359 lines
10 KiB
PHP
359 lines
10 KiB
PHP
<?php
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/************************************************************************
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* This file is part of EspoCRM.
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*
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* EspoCRM - Open Source CRM application.
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* Copyright (C) 2014-2023 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
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* Website: https://www.espocrm.com
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*
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* EspoCRM 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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* EspoCRM 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 EspoCRM. If not, see http://www.gnu.org/licenses/.
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*
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* The interactive user interfaces in modified source and object code versions
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* of this program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU General Public License version 3.
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*
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* In accordance with Section 7(b) of the GNU General Public License version 3,
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* these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
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************************************************************************/
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namespace Espo\Core;
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use Espo\Core\Container\Exceptions\NotFoundException;
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use Espo\Core\Container\Exceptions\NotSettableException;
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use Espo\Core\Container\Loader;
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use Espo\Core\Container\Container as ContainerInterface;
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use Espo\Core\Container\Configuration;
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use Espo\Core\Binding\BindingContainer;
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use Psr\Container\NotFoundExceptionInterface;
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use ReflectionClass;
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use ReflectionNamedType;
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use LogicException;
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use RuntimeException;
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/**
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* DI container for services. Lazy initialization is used. Services are instantiated only once.
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* See https://docs.espocrm.com/development/di/.
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*/
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class Container implements ContainerInterface
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{
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private const ID_CONTAINER = 'container';
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private const ID_INJECTABLE_FACTORY = 'injectableFactory';
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/** @var array<string, object> */
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private array $data = [];
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/** @var array<string, ReflectionClass<object>> */
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private array $classCache = [];
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/** @var array<string, class-string<Loader>> */
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private array $loaderClassNames;
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private ?Configuration $configuration = null;
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private ?BindingContainer $bindingContainer = null;
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private InjectableFactory $injectableFactory;
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/**
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* @param class-string<Configuration> $configurationClassName
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* @param array<string, class-string<Loader>> $loaderClassNames
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* @param array<string, object> $services
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* @throws NotFoundExceptionInterface
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*/
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public function __construct(
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string $configurationClassName,
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array $loaderClassNames = [],
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array $services = [],
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?BindingContainer $bindingContainer = null
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) {
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$this->loaderClassNames = $loaderClassNames;
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foreach ($services as $name => $service) {
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if (!is_string($name) || !is_object($service)) {
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throw new RuntimeException("Container: Bad service passed.");
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}
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$this->setForced($name, $service);
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}
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$this->bindingContainer = $bindingContainer;
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/** @var InjectableFactory $injectableFactory */
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$injectableFactory = $this->get(self::ID_INJECTABLE_FACTORY);
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$this->injectableFactory = $injectableFactory;
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$this->configuration = $this->injectableFactory->create($configurationClassName);
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}
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/**
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* Obtain a service object.
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*
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* @throws NotFoundExceptionInterface If not gettable.
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*/
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public function get(string $id): object
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{
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if (!$this->isSet($id)) {
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$this->load($id);
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if (!$this->isSet($id)) {
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throw new NotFoundException("Could not load '{$id}' service.");
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}
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}
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return $this->data[$id];
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}
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/**
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* Check whether a service can be obtained.
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*/
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public function has(string $id): bool
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{
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if ($this->isSet($id)) {
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return true;
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}
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if (array_key_exists($id, $this->loaderClassNames)) {
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return true;
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}
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$loadMethodName = 'load' . ucfirst($id);
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if (method_exists($this, $loadMethodName)) {
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return true;
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}
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if (!$this->configuration) {
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return false;
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}
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if ($this->configuration->getLoaderClassName($id)) {
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return true;
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}
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if ($this->configuration->getServiceClassName($id)) {
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return true;
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}
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return false;
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}
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private function isSet(string $id): bool
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{
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return isset($this->data[$id]);
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}
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private function initClass(string $id): void
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{
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if ($this->isSet($id)) {
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try {
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$object = $this->get($id);
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}
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catch (NotFoundExceptionInterface) {
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throw new LogicException();
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}
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$this->classCache[$id] = new ReflectionClass($object);
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return;
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}
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if ($id === self::ID_CONTAINER) {
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$this->classCache[$id] = new ReflectionClass(Container::class);
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return;
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}
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if ($id === self::ID_INJECTABLE_FACTORY) {
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$this->classCache[$id] = new ReflectionClass(InjectableFactory::class);
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return;
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}
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$loaderClassName = $this->getLoaderClassName($id);
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if ($loaderClassName) {
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$this->initClassByLoader($id, $loaderClassName);
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return;
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}
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assert($this->configuration !== null);
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$className = $this->configuration->getServiceClassName($id);
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if ($className === null) {
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throw new RuntimeException("No class-name for service '{$id}'.");
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}
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$this->classCache[$id] = new ReflectionClass($className);
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}
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/**
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* @param class-string<Loader> $loaderClassName
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* @throws RuntimeException
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*/
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private function initClassByLoader(string $id, string $loaderClassName): void
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{
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$loaderClass = new ReflectionClass($loaderClassName);
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$loadMethod = $loaderClass->getMethod('load');
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if (!$loadMethod->hasReturnType()) {
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throw new RuntimeException("Loader method for service '{$id}' does not have a return type.");
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}
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$returnType = $loadMethod->getReturnType();
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if (!$returnType instanceof ReflectionNamedType) {
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throw new RuntimeException("Loader method for service '{$id}' does not have a named return type.");
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}
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/** @var class-string $className */
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$className = $returnType->getName();
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$this->classCache[$id] = new ReflectionClass($className);
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}
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/**
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* Get a class of a service.
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*
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* @return ReflectionClass<object>
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* @throws RuntimeException If not gettable.
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*/
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public function getClass(string $id): ReflectionClass
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{
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if (!$this->has($id)) {
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throw new RuntimeException("Service '{$id}' does not exist.");
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}
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if (!isset($this->classCache[$id])) {
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$this->initClass($id);
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}
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return $this->classCache[$id];
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}
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/**
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* Set a service object. Must be configured as settable.
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*
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* @throws NotSettableException Is not settable or already set.
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*/
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public function set(string $id, object $object): void
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{
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assert($this->configuration !== null);
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if (!$this->configuration->isSettable($id)) {
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throw new NotSettableException("Service '{$id}' is not settable.");
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}
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if ($this->isSet($id)) {
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throw new NotSettableException("Service '{$id}' is already set.");
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}
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$this->setForced($id, $object);
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}
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protected function setForced(string $id, object $object): void
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{
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$this->data[$id] = $object;
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}
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private function getLoader(string $name): ?Loader
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{
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$loaderClassName = $this->getLoaderClassName($name);
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if (!$loaderClassName) {
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return null;
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}
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return $this->injectableFactory->create($loaderClassName);
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}
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/**
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* @return ?class-string<Loader>
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*/
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private function getLoaderClassName(string $id): ?string
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{
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$loader = $this->loaderClassNames[$id] ?? null;
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if ($loader) {
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return $loader;
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}
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assert($this->configuration !== null);
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return $this->configuration->getLoaderClassName($id);
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}
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/**
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* @throws NotFoundExceptionInterface
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*/
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private function load(string $id): void
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{
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if ($id === self::ID_CONTAINER) {
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$this->setForced(self::ID_CONTAINER, $this->loadContainer());
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return;
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}
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if ($id === self::ID_INJECTABLE_FACTORY) {
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$this->setForced(self::ID_INJECTABLE_FACTORY, $this->loadInjectableFactory());
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return;
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}
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$loader = $this->getLoader($id);
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if ($loader) {
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$this->data[$id] = $loader->load();
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return;
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}
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assert($this->configuration !== null);
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$className = $this->configuration->getServiceClassName($id);
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if (!$className || !class_exists($className)) {
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throw new RuntimeException("Could not load '{$id}' service.");
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}
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$dependencyList = $this->configuration->getServiceDependencyList($id);
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if (!is_null($dependencyList)) {
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$dependencyObjectList = [];
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foreach ($dependencyList as $item) {
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$dependencyObjectList[] = $this->get($item);
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}
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$reflector = new ReflectionClass($className);
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$this->data[$id] = $reflector->newInstanceArgs($dependencyObjectList);
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return;
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}
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$this->data[$id] = $this->injectableFactory->create($className);
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}
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private function loadContainer(): Container
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{
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return $this;
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}
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private function loadInjectableFactory(): InjectableFactory
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{
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return new InjectableFactory($this, $this->bindingContainer);
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}
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}
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