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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\LimitationSolverInterface; |
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use AsyncSockets\RequestExecutor\Metadata\RequestDescriptor; |
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use AsyncSockets\RequestExecutor\RequestExecutorInterface; |
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/** |
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* Class ConnectStageAbstract |
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*/ |
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class ConnectStage extends AbstractTimeAwareStage |
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{ |
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/** |
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* LimitationSolverInterface |
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* |
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* @var LimitationSolverInterface |
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*/ |
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private $decider; |
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/** |
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* ConnectStageAbstract 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 LimitationSolverInterface $decider Limitation solver for running requests |
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* @param ExecutionContext $executionContext Execution context |
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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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LimitationSolverInterface $decider, |
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ExecutionContext $executionContext |
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) { |
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parent::__construct($executor, $eventCaller, $executionContext); |
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$this->decider = $decider; |
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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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/** @var RequestDescriptor[] $requestDescriptors */ |
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$totalItems = count($requestDescriptors); |
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$result = []; |
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foreach ($requestDescriptors as $descriptor) { |
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$decision = $this->decide($descriptor, $totalItems); |
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if ($decision === LimitationSolverInterface::DECISION_PROCESS_SCHEDULED) { |
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break; |
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} elseif ($decision === LimitationSolverInterface::DECISION_SKIP_CURRENT) { |
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continue; |
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} elseif ($decision !== LimitationSolverInterface::DECISION_OK) { |
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throw new \LogicException('Unknown decision ' . $decision . ' received.'); |
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} |
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if ($this->connectSocket($descriptor)) { |
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$result[] = $descriptor; |
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} |
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} |
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return $result; |
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} |
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/** |
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* Decide how to process given operation |
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* |
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* @param RequestDescriptor $requestDescriptor Operation to decide |
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* @param int $totalItems Total amount of pending requestDescriptors |
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* |
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* @return int One of LimitationSolverInterface::DECISION_* consts |
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*/ |
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private function decide(RequestDescriptor $requestDescriptor, $totalItems) |
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{ |
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$meta = $requestDescriptor->getMetadata(); |
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if ($requestDescriptor->isRunning()) { |
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return LimitationSolverInterface::DECISION_SKIP_CURRENT; |
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} |
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$isSkippingThis = $meta[RequestExecutorInterface::META_CONNECTION_START_TIME] !== null; |
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if ($isSkippingThis) { |
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return LimitationSolverInterface::DECISION_SKIP_CURRENT; |
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} |
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$decision = $this->decider->decide( |
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$this->executor, |
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$requestDescriptor->getSocket(), |
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$this->executionContext, |
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$totalItems |
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); |
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if ($decision !== LimitationSolverInterface::DECISION_OK) { |
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return $decision; |
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} |
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return LimitationSolverInterface::DECISION_OK; |
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} |
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/** |
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* Start connecting process |
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* |
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* @param RequestDescriptor $descriptor Socket operation data |
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* |
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* @return bool True if successfully connected, false otherwise |
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*/ |
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private function connectSocket(RequestDescriptor $descriptor) |
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{ |
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$descriptor->initialize(); |
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$socket = $descriptor->getSocket(); |
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$event = $this->createEvent($descriptor, EventType::INITIALIZE); |
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try { |
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$this->callSocketSubscribers($descriptor, $event); |
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$this->setSocketOperationTime($descriptor, RequestExecutorInterface::META_CONNECTION_START_TIME); |
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if (!$socket->isConnected()) { |
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$meta = $descriptor->getMetadata(); |
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$socket->open( |
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$meta[ RequestExecutorInterface::META_ADDRESS ], |
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$meta[ RequestExecutorInterface::META_SOCKET_STREAM_CONTEXT] |
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); |
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} else { |
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$this->setSocketOperationTime($descriptor, RequestExecutorInterface::META_CONNECTION_FINISH_TIME); |
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} |
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$descriptor->setRunning(true); |
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$result = true; |
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} catch (SocketException $e) { |
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$descriptor->setMetadata(RequestExecutorInterface::META_REQUEST_COMPLETE, true); |
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$this->callExceptionSubscribers($descriptor, $e); |
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$result = false; |
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} |
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return $result; |
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} |
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} |
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|
edefimov /
async-sockets
