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<?php |
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declare(strict_types=1); |
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namespace PHPFastCGI\FastCGIDaemon\Driver\Userland; |
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use PHPFastCGI\FastCGIDaemon\DaemonInterface; |
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use PHPFastCGI\FastCGIDaemon\DaemonOptions; |
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use PHPFastCGI\FastCGIDaemon\DaemonTrait; |
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use PHPFastCGI\FastCGIDaemon\Driver\Userland\Connection\ConnectionPoolInterface; |
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use PHPFastCGI\FastCGIDaemon\Driver\Userland\ConnectionHandler\ConnectionHandler; |
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use PHPFastCGI\FastCGIDaemon\Driver\Userland\ConnectionHandler\ConnectionHandlerFactoryInterface; |
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use PHPFastCGI\FastCGIDaemon\Driver\Userland\Exception\UserlandDaemonException; |
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use PHPFastCGI\FastCGIDaemon\Exception\ShutdownException; |
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use PHPFastCGI\FastCGIDaemon\KernelInterface; |
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/** |
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* The standard implementation of the DaemonInterface is constructed from a |
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* connection pool and a factory class to generate connection handlers. |
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*/ |
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final class UserlandDaemon implements DaemonInterface |
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{ |
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use DaemonTrait; |
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/** |
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* @var KernelInterface |
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*/ |
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private $kernel; |
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/** |
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* @var DaemonOptions |
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*/ |
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private $daemonOptions; |
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/** |
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* @var ConnectionPoolInterface |
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*/ |
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private $connectionPool; |
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/** |
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* @var ConnectionHandlerFactoryInterface |
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*/ |
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private $connectionHandlerFactory; |
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/** |
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* @var ConnectionHandler[] |
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*/ |
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private $connectionHandlers; |
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/** |
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* Constructor. |
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* |
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* @param KernelInterface $kernel The kernel for the daemon to use |
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* @param DaemonOptions $daemonOptions The daemon configuration |
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* @param ConnectionPoolInterface $connectionPool The connection pool to accept connections from |
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* @param ConnectionHandlerFactoryInterface $connectionHandlerFactory A factory class for producing connection handlers |
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*/ |
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public function __construct(KernelInterface $kernel, DaemonOptions $daemonOptions, ConnectionPoolInterface $connectionPool, ConnectionHandlerFactoryInterface $connectionHandlerFactory) |
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{ |
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$this->kernel = $kernel; |
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$this->daemonOptions = $daemonOptions; |
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$this->connectionPool = $connectionPool; |
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$this->connectionHandlerFactory = $connectionHandlerFactory; |
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$this->connectionHandlers = []; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function run(): void |
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{ |
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$this->setupDaemon($this->daemonOptions); |
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$this->daemonOptions->getOption(DaemonOptions::LOGGER)->notice('Daemon is running and ready to accept connections'); |
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try { |
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while (1) { |
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$this->processConnectionPool(); |
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$this->checkDaemonLimits(); |
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} |
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} catch (ShutdownException $exception) { |
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$this->daemonOptions->getOption(DaemonOptions::LOGGER)->notice($exception->getMessage()); |
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$this->shutdown(); |
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} catch (\Exception $exception) { |
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$this->daemonOptions->getOption(DaemonOptions::LOGGER)->emergency($exception->getMessage()); |
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$this->connectionPool->close(); |
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throw $exception; |
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} |
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} |
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/** |
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* Wait for connections in the pool to become readable. Create connection |
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* handlers for new connections and trigger the ready method when there is |
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* data for the handlers to receive. Clean up closed connections. |
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* |
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* @throws \Exception |
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*/ |
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private function processConnectionPool(): void |
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{ |
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$readableConnections = $this->connectionPool->getReadableConnections(5); |
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foreach ($readableConnections as $id => $connection) { |
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if (!isset($this->connectionHandlers[$id])) { |
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$this->connectionHandlers[$id] = $this->connectionHandlerFactory->createConnectionHandler($this->kernel, $connection); |
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} |
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try { |
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$statusCodes = $this->connectionHandlers[$id]->ready(); |
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$this->considerStatusCodes($statusCodes); |
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} catch (UserlandDaemonException $exception) { |
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$this->daemonOptions->getOption(DaemonOptions::LOGGER)->error($exception->getMessage()); |
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} |
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if ($this->connectionHandlers[$id]->isClosed()) { |
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unset($this->connectionHandlers[$id]); |
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} |
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} |
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} |
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/** |
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* Gracefully shutdown the daemon. |
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* |
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* @throws \Exception |
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*/ |
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private function shutdown(): void |
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{ |
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$this->connectionPool->shutdown(); |
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foreach ($this->connectionHandlers as $connectionHandler) { |
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$connectionHandler->shutdown(); |
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} |
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while ($this->connectionPool->count() > 0) { |
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$this->processConnectionPool(); |
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} |
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$this->connectionPool->close(); |
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} |
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} |
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PHPFastCGI /
FastCGIDaemon
