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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\AcceptEvent; |
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use AsyncSockets\Event\ReadEvent; |
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use AsyncSockets\Exception\AcceptException; |
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use AsyncSockets\Exception\TooSlowRecvException; |
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use AsyncSockets\Frame\AcceptedFrame; |
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use AsyncSockets\Frame\FramePickerInterface; |
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use AsyncSockets\Frame\PartialFrame; |
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use AsyncSockets\Operation\OperationInterface; |
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use AsyncSockets\Operation\ReadOperation; |
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use AsyncSockets\RequestExecutor\EventHandlerInterface; |
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use AsyncSockets\RequestExecutor\Metadata\RequestDescriptor; |
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use AsyncSockets\RequestExecutor\Metadata\SpeedRateCounter; |
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use AsyncSockets\RequestExecutor\RequestExecutorInterface; |
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/** |
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* Class ReadIoHandler |
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*/ |
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class ReadIoHandler extends AbstractOobHandler implements FramePickerInterface |
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{ |
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/** |
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* Amount of bytes read by last operation |
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* |
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* @var int |
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*/ |
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private $bytesRead; |
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/** |
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* Actual frame picker |
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* |
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* @var FramePickerInterface |
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*/ |
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private $realFramePicker; |
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/** {@inheritdoc} */ |
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public function supports(OperationInterface $operation) |
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{ |
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return $operation instanceof ReadOperation; |
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} |
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/** {@inheritdoc} */ |
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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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/** @var ReadOperation $operation */ |
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$operation = $descriptor->getOperation(); |
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$socket = $descriptor->getSocket(); |
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$meta = $executor->socketBag()->getSocketMetaData($socket); |
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$context = $meta[RequestExecutorInterface::META_USER_CONTEXT]; |
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$result = null; |
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$this->bytesRead = 0; |
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$this->realFramePicker = $operation->getFramePicker(); |
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try { |
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$response = $socket->read($this); |
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switch (true) { |
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case $response instanceof PartialFrame: |
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$result = $operation; |
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break; |
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case $response instanceof AcceptedFrame: |
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$event = new AcceptEvent( |
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$executor, |
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$socket, |
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$context, |
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3 |
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$response->getClientSocket(), |
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$response->getRemoteAddress() |
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); |
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$eventHandler->invokeEvent($event); |
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1 |
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$result = new ReadOperation(); |
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break; |
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default: |
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$event = new ReadEvent( |
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$executor, |
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$socket, |
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$context, |
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$response, |
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false |
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); |
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$eventHandler->invokeEvent($event); |
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$result = $event->getNextOperation(); |
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break; |
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} |
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} catch (AcceptException $e) { |
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$result = new ReadOperation(); |
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} catch (\Exception $e) { |
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$this->appendReadBytes($descriptor, $this->bytesRead); |
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unset($this->realFramePicker, $this->bytesRead); |
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throw $e; |
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} |
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$this->appendReadBytes($descriptor, $this->bytesRead); |
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unset($this->realFramePicker, $this->bytesRead); |
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return $result; |
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} |
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/** |
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* Append given mount of read bytes to descriptor |
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* |
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* @param RequestDescriptor $descriptor The descriptor |
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* @param int $bytesRead Amount of read bytes |
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* |
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* @return void |
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*/ |
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private function appendReadBytes(RequestDescriptor $descriptor, $bytesRead) |
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{ |
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$meta = $descriptor->getMetadata(); |
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$descriptor->setMetadata( |
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RequestExecutorInterface::META_BYTES_RECEIVED, |
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$meta[RequestExecutorInterface::META_BYTES_RECEIVED] + $bytesRead |
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); |
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$this->handleRecvSpeed($descriptor, $bytesRead); |
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} |
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/** |
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* Process download rate for descriptor |
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* |
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* @param RequestDescriptor $descriptor The descriptor |
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* @param int $bytesRead Amount of read bytes |
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* |
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* @return void |
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*/ |
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private function handleRecvSpeed(RequestDescriptor $descriptor, $bytesRead) |
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{ |
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$meta = $descriptor->getMetadata(); |
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$counter = $descriptor->getCounter(RequestDescriptor::COUNTER_TRANSFER_MIN_RATE); |
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try { |
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if (!$counter) { |
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$counter = new SpeedRateCounter( |
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$meta[RequestExecutorInterface::META_MIN_RECEIVE_SPEED], |
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$meta[RequestExecutorInterface::META_MIN_RECEIVE_SPEED_DURATION] |
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); |
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$counter->advance($meta[RequestExecutorInterface::META_CONNECTION_FINISH_TIME], 0); |
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$descriptor->registerCounter(RequestDescriptor::COUNTER_TRANSFER_MIN_RATE, $counter); |
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} |
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$counter->advance(microtime(true), $bytesRead); |
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$descriptor->setMetadata( |
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RequestExecutorInterface::META_RECEIVE_SPEED, |
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$counter->getCurrentSpeed() ?: $meta[RequestExecutorInterface::META_RECEIVE_SPEED] |
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); |
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} catch (\OverflowException $e) { |
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throw TooSlowRecvException::tooSlowDataReceiving( |
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$descriptor->getSocket(), |
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1 |
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$counter->getCurrentSpeed(), |
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$counter->getCurrentDuration() |
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); |
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} |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function isEof() |
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{ |
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return $this->realFramePicker->isEof(); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function pickUpData($chunk, $remoteAddress) |
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{ |
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$this->bytesRead += strlen($chunk); |
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return $this->realFramePicker->pickUpData($chunk, $remoteAddress); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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1 |
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public function createFrame() |
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{ |
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return $this->realFramePicker->createFrame(); |
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} |
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} |
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|
edefimov /
async-sockets
