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<?php |
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namespace Dazzle\Filesystem\Invoker; |
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use Dazzle\Filesystem\Driver\DriverAbstract; |
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use Dazzle\Filesystem\Invoker\Queue\QueueCall; |
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use Dazzle\Loop\LoopInterface; |
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use Dazzle\Promise\Promise; |
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use SplQueue; |
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class InvokerQueue implements InvokerInterface |
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{ |
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/** |
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* @var LoopInterface |
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*/ |
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protected $loop; |
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/** |
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* @var DriverAbstract |
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*/ |
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protected $driver; |
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/** |
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* @var SplQueue |
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*/ |
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protected $queue; |
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/** |
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* @param DriverAbstract $driver |
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*/ |
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public function __construct(DriverAbstract $driver) |
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{ |
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$this->loop = $driver->getLoop(); |
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$this->driver = $driver; |
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$this->queue = new SplQueue(); |
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} |
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/** |
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* @override |
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* @inheritDoc |
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*/ |
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public function call($func, $args = []) |
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{ |
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$promise = new Promise(); |
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$this->queue->enqueue(new QueueCall($func, $args, $promise)); |
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if (!$this->queue->isEmpty()) |
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{ |
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$this->processQueue(); |
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} |
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return $promise |
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->then(function(QueueCall $call) { |
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return $this->driver->call($call->func, $call->args); |
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}) |
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->then( |
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$this->getQueueHandler('Dazzle\Promise\Promise::doResolve'), |
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$this->getQueueHandler('Dazzle\Promise\Promise::doReject') |
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); |
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} |
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/** |
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* @override |
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* @inheritDoc |
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*/ |
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public function isEmpty() |
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{ |
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return $this->queue->isEmpty(); |
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} |
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/** |
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* Process queue. |
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*/ |
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protected function processQueue() |
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{ |
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$this->loop->onTick(function() { |
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if ($this->queue->isEmpty()) |
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{ |
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return; |
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} |
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$call = $this->queue->dequeue(); |
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$call->promise->resolve($call); |
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}); |
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} |
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/** |
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* Get queue handler. |
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* |
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* @param callable $func |
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* @return callable |
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*/ |
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protected function getQueueHandler(callable $func) |
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{ |
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return function($mixed) use($func) { |
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if (!$this->queue->isEmpty()) |
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{ |
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$this->processQueue(); |
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} |
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return $func($mixed); |
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}; |
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} |
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} |
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dazzle-php /
filesystem
