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<?php |
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/** |
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* Veto. |
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* PHP Microframework. |
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* |
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* @author Damien Walsh <[email protected]> |
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* @copyright Damien Walsh 2013-2014 |
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* @version 0.1 |
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* @package veto |
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*/ |
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namespace Veto; |
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use Veto\Configuration\Hive; |
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use Veto\DependencyInjection\AbstractContainerAccessor; |
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use Veto\DependencyInjection\Container; |
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use Veto\DependencyInjection\Definition; |
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use Veto\Http\Request; |
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use Veto\Http\Response; |
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use Veto\Http\RequestStack; |
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use Veto\Layer\LayerChainBuilder; |
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/** |
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* App |
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* |
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* Represents the kernel of a web application. |
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* |
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* @since 0.1 |
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*/ |
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class App extends AbstractContainerAccessor |
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{ |
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/** |
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* @var bool Whether or not the application is running in Debug mode |
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*/ |
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public $debug = false; |
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/** |
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* @var RequestStack |
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*/ |
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private $requestStack = null; |
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/** |
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* Create a new application instance. |
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* |
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* @param bool $debug A flag indicating whether or not to start the application in Debug mode. |
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* @param array $config An associative array of configuration settings for the application. |
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*/ |
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public function __construct($debug = false, array $config = array()) |
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{ |
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// The debug mode flag |
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$this->debug = $debug; |
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// Load the base configuration |
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$baseConfig = new Hive(); |
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$baseConfig->load(dirname(__DIR__) . '/config/base.yml'); |
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// Load the debug configuration if this application will start in Debug mode |
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if ($this->debug) { |
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$baseConfig->load(dirname(__DIR__) . '/config/debug.yml'); |
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} |
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// Merge the actual config onto the base config |
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$baseConfig->merge($config); |
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// Initialise service container |
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$this->container = new Container; |
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// Register the kernel & configuration hive |
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$this->container->defineInstance('config', $baseConfig); |
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$this->container->defineInstance('app', $this); |
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$this->container->defineInstance('container', $this->container); |
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// Create the request stack and register it with the container |
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$this->requestStack = new RequestStack; |
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$this->container->defineInstance('request_stack', $this->requestStack); |
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// Register parameters & services |
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$this->registerParameters(isset($baseConfig['parameters']) ? $baseConfig['parameters'] : array()); |
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$this->registerServices(isset($baseConfig['services']) ? $baseConfig['services'] : array()); |
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// Set up layers |
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$layerChain = LayerChainBuilder::initWithConfigurationAndContainer($baseConfig, $this->container); |
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$this->container->defineInstance('chain', $layerChain); |
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} |
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/** |
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* Register an array of parameters with the service container. |
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* |
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* @param array $parameters The parameters to register |
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*/ |
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private function registerParameters(array $parameters) |
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{ |
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foreach ($parameters as $name => $value) { |
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$this->container->setParameter($name, $value); |
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} |
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} |
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/** |
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* Recursively register an array of services as presented in the configuration JSON. |
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* |
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* @param array $services The services to register |
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* @param string $namespace The namespace under which to register services |
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*/ |
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private function registerServices(array $services, $namespace = '') |
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{ |
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foreach ($services as $name => $element) { |
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if (isset($element['class'])) { |
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// This is a service definition |
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$definition = Definition::initWithArray($namespace . ($namespace ? '.' : '') . $name, $element); |
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$this->container->define($definition); |
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} else { |
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// This is an array of services in a namespace |
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$this->registerServices( |
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$element, |
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$namespace . ($namespace ? '.' : '') . $name |
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); |
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} |
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} |
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} |
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/** |
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* Handle a request using the defined layer chain. |
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* |
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* @param Request $request |
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* @return Response |
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*/ |
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public function handle(Request $request) |
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{ |
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$this->requestStack->push($request); |
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try { |
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// TODO: Not keen on this, need to find a way to avoid referencing the chain service, tags? |
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$layerChain = $this->container->get('chain'); |
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$response = $layerChain->processLayers($request); |
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$this->requestStack->pop(); |
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} catch (\Exception $exception) { |
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// Invoke the exception controller action method |
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$exceptionHandler = $this->container->get('controller._exception_handler'); |
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$exceptionHandler->setContainer($this->container); |
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$response = $exceptionHandler->handleExceptionAction($request, $exception); |
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} |
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return $response; |
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} |
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} |
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themainframe /
veto
