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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) 2015-2016, 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\ReadEvent; |
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use AsyncSockets\Frame\RawFramePicker; |
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use AsyncSockets\Operation\OperationInterface; |
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use AsyncSockets\RequestExecutor\EventHandlerInterface; |
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use AsyncSockets\RequestExecutor\IoHandlerInterface; |
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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 AbstractOobHandler |
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*/ |
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abstract class AbstractOobHandler implements IoHandlerInterface |
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{ |
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/** |
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* Operation to descriptor state map |
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* |
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* @var array |
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*/ |
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private static $stateMap = [ |
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OperationInterface::OPERATION_READ => RequestDescriptor::RDS_READ, |
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OperationInterface::OPERATION_WRITE => RequestDescriptor::RDS_WRITE, |
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]; |
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/** |
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* {@inheritdoc} |
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*/ |
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final public function handle( |
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RequestDescriptor $descriptor, |
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RequestExecutorInterface $executor, |
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EventHandlerInterface $eventHandler |
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) { |
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$result = null; |
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if ($descriptor->hasState(RequestDescriptor::RDS_OOB)) { |
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$descriptor->clearState(RequestDescriptor::RDS_OOB); |
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$picker = new RawFramePicker(); |
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$socket = $descriptor->getSocket(); |
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$meta = $descriptor->getMetadata(); |
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$frame = $socket->read($picker, true); |
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$event = new ReadEvent( |
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$executor, |
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$socket, |
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$meta[RequestExecutorInterface::META_USER_CONTEXT], |
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$frame, |
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true |
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); |
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$event->nextIs($descriptor->getOperation()); |
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$eventHandler->invokeEvent($event); |
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$result = $event->getNextOperation(); |
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if ($event->getNextOperation() !== $descriptor->getOperation()) { |
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return $result; |
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} |
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} |
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$state = $this->getInvokeState($descriptor->getOperation()); |
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if ($descriptor->hasState($state)) { |
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$descriptor->clearState($state); |
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$result = $this->handleOperation($descriptor, $executor, $eventHandler); |
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} |
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return $result; |
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} |
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/** |
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* Return state which should invoke this operation |
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* |
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* @param OperationInterface $operation Operation object |
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* |
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* @return int RequestDescriptor::RDS_* constant |
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*/ |
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private function getInvokeState(OperationInterface $operation) |
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{ |
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$type = $operation->getType(); |
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return isset(self::$stateMap[$type]) ? self::$stateMap[$type] : 0; |
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} |
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/** |
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* Process given operation |
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* |
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* @param RequestDescriptor $descriptor Request descriptor |
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* @param RequestExecutorInterface $executor Executor, processing operation |
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* @param EventHandlerInterface $eventHandler Event handler for this operation |
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* |
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* @return OperationInterface|null Next operation to pass in socket. Return null, |
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* if next operation is not required. Return $operation parameter, if operation is not completed yet |
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*/ |
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abstract protected function handleOperation( |
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RequestDescriptor $descriptor, |
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RequestExecutorInterface $executor, |
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EventHandlerInterface $eventHandler |
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); |
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} |
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|
edefimov /
async-sockets
