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<?php
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declare(strict_types=1);
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namespace DI\Proxy;
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use ProxyManager\Configuration;
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use ProxyManager\Factory\LazyLoadingValueHolderFactory;
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use ProxyManager\FileLocator\FileLocator;
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use ProxyManager\GeneratorStrategy\EvaluatingGeneratorStrategy;
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use ProxyManager\GeneratorStrategy\FileWriterGeneratorStrategy;
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use ProxyManager\Proxy\LazyLoadingInterface;
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/**
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* Creates proxy classes.
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*
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* Wraps Ocramius/ProxyManager LazyLoadingValueHolderFactory.
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*
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* @see \ProxyManager\Factory\LazyLoadingValueHolderFactory
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*
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* @since 5.0
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* @author Matthieu Napoli <matthieu@mnapoli.fr>
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*/
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class ProxyFactory
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{
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private ?LazyLoadingValueHolderFactory $proxyManager = null;
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/**
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* @param string|null $proxyDirectory If set, write the proxies to disk in this directory to improve performances.
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*/
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public function __construct(
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private ?string $proxyDirectory = null,
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) {
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}
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/**
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* Creates a new lazy proxy instance of the given class with
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* the given initializer.
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*
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* @param class-string $className name of the class to be proxied
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* @param \Closure $initializer initializer to be passed to the proxy
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*/
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public function createProxy(string $className, \Closure $initializer) : LazyLoadingInterface
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{
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return $this->proxyManager()->createProxy($className, $initializer);
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}
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/**
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* Generates and writes the proxy class to file.
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*
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* @param class-string $className name of the class to be proxied
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*/
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public function generateProxyClass(string $className) : void
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{
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// If proxy classes a written to file then we pre-generate the class
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// If they are not written to file then there is no point to do this
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if ($this->proxyDirectory) {
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$this->createProxy($className, function () {});
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}
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}
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private function proxyManager() : LazyLoadingValueHolderFactory
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{
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if ($this->proxyManager === null) {
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if (! class_exists(Configuration::class)) {
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throw new \RuntimeException('The ocramius/proxy-manager library is not installed. Lazy injection requires that library to be installed with Composer in order to work. Run "composer require ocramius/proxy-manager:~2.0".');
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}
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$config = new Configuration();
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if ($this->proxyDirectory) {
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$config->setProxiesTargetDir($this->proxyDirectory);
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$config->setGeneratorStrategy(new FileWriterGeneratorStrategy(new FileLocator($this->proxyDirectory)));
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// @phpstan-ignore-next-line
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spl_autoload_register($config->getProxyAutoloader());
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} else {
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$config->setGeneratorStrategy(new EvaluatingGeneratorStrategy());
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}
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$this->proxyManager = new LazyLoadingValueHolderFactory($config);
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}
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return $this->proxyManager;
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}
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}
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