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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\Metadata; |
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use AsyncSockets\Configuration\StreamContext; |
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use AsyncSockets\Event\Event; |
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use AsyncSockets\Operation\OperationInterface; |
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use AsyncSockets\RequestExecutor\EventHandlerInterface; |
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use AsyncSockets\RequestExecutor\ExecutionContext; |
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use AsyncSockets\RequestExecutor\RequestExecutorInterface; |
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use AsyncSockets\Socket\PersistentClientSocket; |
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use AsyncSockets\Socket\SocketInterface; |
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use AsyncSockets\Socket\StreamResourceInterface; |
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/** |
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* Class RequestDescriptor |
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*/ |
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class RequestDescriptor implements StreamResourceInterface, EventHandlerInterface |
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{ |
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/** |
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* This descriptor is ready for reading |
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*/ |
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const RDS_READ = 0x0001; |
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/** |
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* This descriptor is ready for writing |
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*/ |
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const RDS_WRITE = 0x0002; |
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/** |
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* This descriptor is has OOB data |
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*/ |
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const RDS_OOB = 0x0004; |
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/** |
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* Minimum transfer rate counter for receiving data |
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*/ |
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const COUNTER_RECV_MIN_RATE = 'recv_speed_rate_counter'; |
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/** |
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* Minimum transfer rate counter for sending data |
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*/ |
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const COUNTER_SEND_MIN_RATE = 'send_speed_rate_counter'; |
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/** |
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* Socket for this operation |
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* |
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* @var SocketInterface |
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*/ |
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private $socket; |
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/** |
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* Key-value pairs with meta information |
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* |
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* @var array |
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*/ |
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private $metadata = []; |
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/** |
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* Event handler object |
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* |
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* @var EventHandlerInterface |
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*/ |
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private $handlers; |
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/** |
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* Flag whether this socket request is running |
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* |
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* @var bool |
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*/ |
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private $isRunning; |
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/** |
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* Operation to perform on socket |
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* |
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* @var OperationInterface |
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*/ |
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private $operation; |
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/** |
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* Flag if this socket is postponed |
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* |
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* @var bool |
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*/ |
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private $isPostponed = false; |
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/** |
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* Set of state flags: RDS_* consts |
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* |
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* @var int |
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*/ |
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private $state = 0; |
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/** |
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* Array of counters |
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* |
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* @var SpeedRateCounter[] |
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*/ |
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private $counters; |
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/** |
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* RequestDescriptor constructor. |
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* |
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* @param SocketInterface $socket Socket object |
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* @param OperationInterface $operation Operation to perform on socket |
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* @param array $metadata Metadata |
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* @param EventHandlerInterface $handlers Handlers for this socket |
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*/ |
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public function __construct( |
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SocketInterface $socket, |
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OperationInterface $operation, |
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array $metadata, |
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EventHandlerInterface $handlers = null |
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) { |
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$this->socket = $socket; |
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$this->operation = $operation; |
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$this->handlers = $handlers; |
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$this->counters = []; |
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$this->setMetadata($metadata); |
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$this->initialize(); |
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} |
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/** |
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* Initialize data before request |
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* |
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* @return void |
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*/ |
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public function initialize() |
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{ |
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$this->isRunning = false; |
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} |
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/** |
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* Return Operation |
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* |
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* @return OperationInterface |
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*/ |
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public function getOperation() |
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{ |
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return $this->operation; |
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} |
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/** |
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* Sets Operation |
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* |
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* @param OperationInterface $operation New operation |
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* |
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* @return void |
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*/ |
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public function setOperation(OperationInterface $operation) |
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{ |
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$this->operation = $operation; |
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} |
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/** |
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* Return flag whether request is running |
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* |
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* @return boolean |
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*/ |
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public function isRunning() |
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{ |
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return $this->isRunning; |
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} |
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/** |
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* Sets running flag |
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* |
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* @param boolean $isRunning New value for IsRunning |
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* |
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* @return void |
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*/ |
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public function setRunning($isRunning) |
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{ |
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$this->isRunning = $isRunning; |
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} |
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/** |
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* Return Socket |
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* |
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* @return SocketInterface |
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*/ |
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public function getSocket() |
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{ |
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return $this->socket; |
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} |
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/** {@inheritdoc} */ |
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public function getStreamResource() |
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{ |
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return $this->socket->getStreamResource(); |
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} |
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/** |
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* Return key-value array with metadata |
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* |
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* @return array |
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*/ |
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public function getMetadata() |
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{ |
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return $this->metadata; |
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} |
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/** |
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* Set metadata for given socket |
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* |
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* @param string|array $key Either string or key-value array of metadata. If string, then value must be |
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* passed in third argument, if array, then third argument will be ignored |
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* @param mixed $value Value for key or null, if $key is array |
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* |
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* @return void |
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*/ |
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public function setMetadata($key, $value = null) |
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{ |
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if (!is_array($key)) { |
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$this->metadata[$key] = $value; |
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$isStreamContextChanged = $key === RequestExecutorInterface::META_SOCKET_STREAM_CONTEXT; |
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} else { |
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$this->metadata = array_merge( |
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$this->metadata, |
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$key |
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); |
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$isStreamContextChanged = array_key_exists(RequestExecutorInterface::META_SOCKET_STREAM_CONTEXT, $key); |
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} |
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if ($isStreamContextChanged) { |
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$context = new StreamContext($this->metadata[RequestExecutorInterface::META_SOCKET_STREAM_CONTEXT]); |
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$this->metadata[RequestExecutorInterface::META_SOCKET_STREAM_CONTEXT] = $context->getResource(); |
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} |
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} |
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/** {@inheritdoc} */ |
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public function invokeEvent( |
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Event $event, |
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RequestExecutorInterface $executor, |
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SocketInterface $socket, |
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ExecutionContext $context |
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) { |
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if ($this->handlers) { |
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$this->handlers->invokeEvent($event, $executor, $socket, $context); |
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} |
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} |
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/** |
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* Completes processing this socket in event loop, but keep this socket connection opened. Applicable |
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* only to persistent sockets, all other socket types are ignored by this method. |
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* |
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* @return void |
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*/ |
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public function postpone() |
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{ |
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if (!($this->socket instanceof PersistentClientSocket)) { |
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return; |
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} |
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$this->isPostponed = true; |
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} |
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/** |
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* Return true, if this socket shouldn't be processed by executor engine |
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* |
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* @return bool |
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*/ |
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public function isPostponed() |
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{ |
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return $this->isPostponed; |
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} |
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/** |
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* Return true if descriptor has given state |
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* |
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* @param int $state State to check, set of RDS_* consts |
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* |
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* @return bool |
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*/ |
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public function hasState($state) |
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{ |
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return (bool) ($this->state & $state); |
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} |
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/** |
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* Sets one state into an object |
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* |
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* @param int $state State to set, set of RDS_* consts |
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* |
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* @return void |
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*/ |
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public function setState($state) |
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{ |
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$this->state |= $state; |
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} |
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/** |
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* Clears given state in object |
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* |
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* @param int $state State to clear, set of RDS_* consts |
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* |
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* @return void |
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*/ |
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public function clearState($state) |
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{ |
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$this->state &= ~$state; |
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} |
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/** |
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* Registers counter in this descriptor |
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* |
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* @param string $name SpeedRateCounter name for retrieving |
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* @param SpeedRateCounter $counter A counter object |
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* |
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* @return void |
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*/ |
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public function registerCounter($name, SpeedRateCounter $counter) |
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{ |
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if (!isset($this->counters[$name])) { |
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$this->counters[$name] = $counter; |
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} |
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} |
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/** |
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* Return counter by given name |
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* |
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* @param string $name SpeedRateCounter name |
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* |
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* @return SpeedRateCounter|null |
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*/ |
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public function getCounter($name) |
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{ |
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return isset($this->counters[$name]) ? $this->counters[$name] : null; |
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} |
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/** |
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* Resets counter with given name |
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* |
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* @param string $name Counter name |
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* |
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* @return void |
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*/ |
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public function resetCounter($name) |
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{ |
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$counter = $this->getCounter($name); |
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if (!$counter) { |
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return; |
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} |
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$resetMetadata = [ |
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self::COUNTER_RECV_MIN_RATE => [ |
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RequestExecutorInterface::META_RECEIVE_SPEED => 0, |
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], |
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self::COUNTER_SEND_MIN_RATE => [ |
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RequestExecutorInterface::META_SEND_SPEED => 0, |
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], |
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]; |
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$counter->reset(); |
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if (isset($resetMetadata[$name])) { |
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$this->setMetadata($resetMetadata[$name]); |
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} |
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} |
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} |
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