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<?php |
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/** |
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* WebHemi. |
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* |
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* PHP version 5.6 |
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* |
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* @copyright 2012 - 2016 Gixx-web (http://www.gixx-web.com) |
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* @license https://opensource.org/licenses/MIT The MIT License (MIT) |
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* |
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* @link http://www.gixx-web.com |
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*/ |
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namespace WebHemi\Adapter\DependencyInjection\Symfony; |
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use Symfony\Component\DependencyInjection\ContainerBuilder; |
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use Symfony\Component\DependencyInjection\Definition; |
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use Symfony\Component\DependencyInjection\Reference; |
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use WebHemi\Adapter\DependencyInjection\DependencyInjectionAdapterInterface; |
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use WebHemi\Adapter\Exception\InitException; |
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use WebHemi\Config\ConfigInterface; |
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/** |
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* Class SymfonyAdapter. |
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*/ |
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class SymfonyAdapter implements DependencyInjectionAdapterInterface |
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{ |
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/** @var ContainerBuilder */ |
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private $container; |
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/** @var array */ |
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private $configuration; |
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/** @var array */ |
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private $servicesToDefine = []; |
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/** @var array */ |
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private $instantiatedSharedServices = []; |
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/** @var int */ |
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private static $parameterIndex = 0; |
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/** |
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* DependencyInjectionAdapterInterface constructor. |
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* |
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* @param ConfigInterface $configuration |
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*/ |
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public function __construct(ConfigInterface $configuration) |
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{ |
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$this->container = new ContainerBuilder(); |
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$this->configuration = $configuration->toArray(); |
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$this->initContainer(); |
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} |
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/** |
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* Initializes the DI container from the config. |
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*/ |
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private function initContainer() |
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{ |
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// Collect the name information about the services to be registered |
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foreach ($this->configuration as $alias => $setupData) { |
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if (isset($setupData[self::SERVICE_CLASS])) { |
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$serviceClass = $setupData[self::SERVICE_CLASS]; |
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} else { |
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$serviceClass = $alias; |
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} |
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$this->servicesToDefine[$alias] = $serviceClass; |
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} |
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foreach ($this->servicesToDefine as $alias => $serviceClass) { |
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$this->registerService($alias, $serviceClass); |
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} |
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} |
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/** |
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* Register the service. |
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* |
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* @param string $identifier |
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* @param string $serviceClass |
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*/ |
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public function registerService($identifier, $serviceClass) |
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{ |
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// Do nothing if the service has been already registered with the same alias. |
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// It is allowed to register the same service multiple times with different aliases. |
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if ($this->has($identifier)) { |
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return; |
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} |
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// Init settings. |
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$setUpData = [ |
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self::SERVICE_CLASS => $serviceClass, |
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self::SERVICE_ARGUMENTS => [], |
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self::SERVICE_METHOD_CALL => [], |
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// By default the Symfony DI shares all services. In WebHemi by default nothing is shared. |
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self::SERVICE_SHARE => false, |
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]; |
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// Override settings from the configuration if exists. |
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if (isset($this->configuration[$identifier])) { |
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$setUpData = array_merge($setUpData, $this->configuration[$identifier]); |
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} |
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// Create the definition. |
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$definition = new Definition($serviceClass); |
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$sharedService = (bool) $setUpData[self::SERVICE_SHARE]; |
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$definition->setShared($sharedService); |
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// Register the service. |
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$service = $this->container->setDefinition($identifier, $definition); |
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if ($sharedService) { |
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$this->instantiatedSharedServices[$service->getClass()] = false; |
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} |
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// Add arguments. |
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foreach ((array) $setUpData[self::SERVICE_ARGUMENTS] as $parameter) { |
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$this->setServiceArgument($service, $parameter); |
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} |
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// Register method callings. |
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foreach ((array) $setUpData[self::SERVICE_METHOD_CALL] as $method => $parameterList) { |
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$this->addMethodCall($service, $method, $parameterList); |
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} |
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} |
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/** |
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* Adds a method call for the service. It will be triggered as soon as the service had been initialized. |
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* |
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* @param Definition $service |
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* @param string $method |
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* @param array $parameterList |
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*/ |
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private function addMethodCall(Definition $service, $method, $parameterList = []) |
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{ |
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// Check the parameter list for reference services |
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foreach ($parameterList as &$parameter) { |
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$parameter = $this->getReferenceServiceIfAvailable($parameter); |
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} |
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$service->addMethodCall($method, $parameterList); |
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} |
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/** |
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* If possible create register the parameter as a service and give it back as a reference. |
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* |
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* @param mixed $classOrServiceName |
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* |
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* @return mixed|Reference |
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*/ |
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private function getReferenceServiceIfAvailable($classOrServiceName) |
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{ |
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$reference = $classOrServiceName; |
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// Check string parameter if it is a valid service or class name. |
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if (!is_string($classOrServiceName)) { |
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return $reference; |
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} |
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if (isset($this->servicesToDefine[$classOrServiceName])) { |
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// The parameter is defined as a service but it is not yet registered; alias is given. |
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$this->registerService($classOrServiceName, $this->servicesToDefine[$classOrServiceName]); |
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} elseif (in_array($classOrServiceName, $this->servicesToDefine)) { |
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// The parameter is defined as a service but it is not yet registered; real class is given. |
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$referenceAlias = array_search($classOrServiceName, $this->servicesToDefine); |
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$this->registerService($referenceAlias, $this->servicesToDefine[$referenceAlias]); |
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$classOrServiceName = $referenceAlias; |
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} elseif (class_exists($classOrServiceName)) { |
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// The parameter is not a service, but it is a class that can be instantiated. e.g.: DateTime::class |
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$this->container->register($classOrServiceName, $classOrServiceName); |
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} |
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if ($this->has($classOrServiceName)) { |
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$reference = new Reference($classOrServiceName); |
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} |
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return $reference; |
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} |
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/** |
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* Creates a safe normalized name. |
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* |
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* @param $className |
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* @param $argumentName |
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* |
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* @return string |
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*/ |
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private function getNormalizedName($className, $argumentName) |
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{ |
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$className = 'C_'.preg_replace('/[^a-z0-9]/', '', strtolower($className)); |
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$argumentName = 'A_'.preg_replace('/[^a-z0-9]/', '', strtolower($argumentName)); |
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return $className.'.'.$argumentName; |
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} |
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/** |
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* Gets a service. It also tries to register the one without arguments which not yet registered. |
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* |
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* @param string $identifier |
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* |
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* @return object |
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*/ |
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public function get($identifier) |
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{ |
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if (!$this->container->has($identifier) && class_exists($identifier)) { |
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$this->registerService($identifier, $identifier); |
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} |
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$service = $this->container->get($identifier); |
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$serviceClass = get_class($service); |
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if (isset($this->instantiatedSharedServices[$serviceClass])) { |
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$this->instantiatedSharedServices[$serviceClass] = true; |
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} |
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return $service; |
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} |
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/** |
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* Returns true if the given service is defined. |
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* |
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* @param string $identifier |
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* |
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* @return bool |
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*/ |
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public function has($identifier) |
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{ |
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return $this->container->has($identifier); |
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} |
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/** |
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* Sets service argument. |
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* @param string|Definition $service |
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* @param mixed $parameter |
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* |
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* @throws InitException |
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* |
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* @return DependencyInjectionAdapterInterface |
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*/ |
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public function setServiceArgument($service, $parameter) |
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{ |
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if (!$service instanceof Definition) { |
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$service = $this->container->getDefinition($service); |
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} |
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$parameterName = $parameter; |
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$serviceClass = $service->getClass(); |
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if (isset($this->instantiatedSharedServices[$serviceClass]) |
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&& $this->instantiatedSharedServices[$serviceClass] === true |
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) { |
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throw new InitException('Cannot add argument to an already initialized service.'); |
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} |
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if (!is_scalar($parameterName)) { |
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$parameterName = self::$parameterIndex++; |
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} |
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// Create a normalized name for the argument. |
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$normalizedName = $this->getNormalizedName($serviceClass, $parameterName); |
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// Check if the parameter is a service. |
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$parameter = $this->getReferenceServiceIfAvailable($parameter); |
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$this->container->setParameter($normalizedName, $parameter); |
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$service->addArgument('%'.$normalizedName.'%'); |
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return $this; |
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} |
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} |
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