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<?php |
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/** |
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* Async sockets |
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* |
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* @copyright Copyright (c) 2015-2017, Efimov Evgenij <[email protected]> |
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* |
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* This source file is subject to the MIT license that is bundled |
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* with this source code in the file LICENSE. |
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*/ |
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namespace AsyncSockets\RequestExecutor\Pipeline; |
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use AsyncSockets\Event\EventType; |
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use AsyncSockets\Exception\SocketException; |
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use AsyncSockets\RequestExecutor\ExecutionContext; |
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use AsyncSockets\RequestExecutor\Metadata\RequestDescriptor; |
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use AsyncSockets\RequestExecutor\RequestExecutorInterface; |
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use AsyncSockets\Socket\AsyncSelector; |
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/** |
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* Class DisconnectStage |
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*/ |
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class DisconnectStage extends AbstractStage |
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{ |
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/** |
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* Selector |
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* |
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* @var AsyncSelector |
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*/ |
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private $selector; |
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/** |
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* DisconnectStage constructor. |
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* |
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* @param RequestExecutorInterface $executor Request executor |
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* @param EventCaller $eventCaller Event caller |
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* @param ExecutionContext $executionContext Execution context |
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* @param AsyncSelector $selector Async selector |
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*/ |
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public function __construct( |
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RequestExecutorInterface $executor, |
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EventCaller $eventCaller, |
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ExecutionContext $executionContext, |
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AsyncSelector $selector = null |
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) { |
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parent::__construct($executor, $eventCaller, $executionContext); |
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$this->selector = $selector; |
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} |
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/** {@inheritdoc} */ |
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public function processStage(array $requestDescriptors) |
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{ |
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foreach ($requestDescriptors as $descriptor) { |
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$this->disconnectSingleSocket($descriptor); |
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$this->processForgottenDescriptor($descriptor); |
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} |
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return $requestDescriptors; |
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} |
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/** |
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* Disconnect given socket |
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* |
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* @param RequestDescriptor $descriptor Operation object |
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* |
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* @return void |
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*/ |
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private function disconnectSingleSocket(RequestDescriptor $descriptor) |
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{ |
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$meta = $descriptor->getMetadata(); |
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if ($meta[RequestExecutorInterface::META_REQUEST_COMPLETE]) { |
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return; |
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} |
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if (!$this->isDisconnectRequired($descriptor)) { |
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return; |
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} |
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$this->disconnect($descriptor); |
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} |
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/** |
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* Disconnects given socket descriptor |
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* |
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* @param RequestDescriptor $descriptor Socket descriptor |
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* |
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* @return void |
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*/ |
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public function disconnect(RequestDescriptor $descriptor) |
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{ |
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$meta = $descriptor->getMetadata(); |
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$socket = $descriptor->getSocket(); |
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$descriptor->setMetadata(RequestExecutorInterface::META_REQUEST_COMPLETE, true); |
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try { |
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$socket->close(); |
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if ($meta[ RequestExecutorInterface::META_CONNECTION_FINISH_TIME ] !== null) { |
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$this->callSocketSubscribers( |
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$descriptor, |
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$this->createEvent($descriptor, EventType::DISCONNECTED) |
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); |
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} |
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} catch (SocketException $e) { |
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$this->callExceptionSubscribers($descriptor, $e); |
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} |
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$this->dispatchFinalizeEvent($descriptor); |
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} |
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/** |
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* Remove given descriptor from selector |
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* |
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* @param RequestDescriptor $operation |
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* |
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* @return void |
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*/ |
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private function removeOperationsFromSelector(RequestDescriptor $operation) |
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{ |
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if ($this->selector) { |
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$this->selector->removeAllSocketOperations($operation); |
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} |
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} |
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/** |
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* Check whether given socket should be disconnected |
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* |
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* @param RequestDescriptor $descriptor Socket descriptor |
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* |
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* @return bool |
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*/ |
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private function isDisconnectRequired(RequestDescriptor $descriptor) |
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{ |
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$socket = $descriptor->getSocket(); |
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$meta = $descriptor->getMetadata(); |
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return !$meta[RequestExecutorInterface::META_KEEP_ALIVE] || ( |
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feof($socket->getStreamResource()) !== false || |
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!stream_socket_get_name($socket->getStreamResource(), true) |
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); |
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} |
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/** |
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* Marks forgotten socket as complete |
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* |
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* @param RequestDescriptor $descriptor The descriptor |
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* |
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* @return void |
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*/ |
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private function processForgottenDescriptor(RequestDescriptor $descriptor) |
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{ |
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$meta = $descriptor->getMetadata(); |
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if (!$meta[RequestExecutorInterface::META_KEEP_ALIVE] || !$descriptor->isForgotten()) { |
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return; |
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} |
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$descriptor->setMetadata(RequestExecutorInterface::META_REQUEST_COMPLETE, true); |
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$this->dispatchFinalizeEvent($descriptor); |
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} |
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/** |
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* Dispatches finalize event for socket |
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* |
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* @param RequestDescriptor $descriptor Descriptor for dispatching event |
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* |
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* @return void |
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*/ |
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private function dispatchFinalizeEvent(RequestDescriptor $descriptor) |
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{ |
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$this->callSocketSubscribers( |
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$descriptor, |
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$this->createEvent($descriptor, EventType::FINALIZE) |
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); |
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$this->removeOperationsFromSelector($descriptor); |
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} |
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} |
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|
edefimov /
async-sockets
