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<?php |
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/** |
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* Subscribes API |
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* User: moyo |
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* Date: 2018/8/28 |
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* Time: 5:08 PM |
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*/ |
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namespace Carno\Redis\Chips; |
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use Carno\Channel\Chan; |
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use Carno\Channel\Channel; |
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use Carno\Promise\Promise; |
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use Carno\Promise\Promised; |
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use Carno\Redis\Types\Message; |
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trait Subscriber |
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{ |
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/** |
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* @var Chan |
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*/ |
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private $consumer = null; |
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/** |
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* @var bool |
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*/ |
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private $subscribed = false; |
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/** |
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* @var Promised |
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*/ |
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private $acknowledge = null; |
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/** |
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* @param string ...$channels |
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* @return Chan |
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*/ |
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public function subscribe(string ...$channels) |
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{ |
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$this->command('subscribe', $channels); |
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yield $this->acknowledge(); |
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return $this->consuming(); |
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} |
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/** |
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* @param string ...$patterns |
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* @return Chan |
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*/ |
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public function pSubscribe(string ...$patterns) |
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{ |
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$this->command('psubscribe', $patterns); |
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yield $this->acknowledge(); |
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return $this->consuming(); |
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} |
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/** |
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* @return Chan |
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*/ |
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private function consuming() : Chan |
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{ |
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if ($this->consumer) { |
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return $this->consumer; |
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} |
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/** |
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* @var Promised $closed |
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*/ |
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$closed = $this->closed(); |
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$closed->then(function () { |
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$this->consumer && $this->consumer->close(); |
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}); |
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return $this->consumer = new Channel; |
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} |
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/** |
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* @return bool |
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*/ |
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private function subscribed() : bool |
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{ |
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return $this->subscribed; |
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} |
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/** |
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* @return Promised |
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*/ |
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private function acknowledge() : Promised |
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{ |
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($this->acknowledge = Promise::deferred())->then(function () { |
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unset($this->acknowledge); |
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}); |
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return $this->acknowledge; |
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} |
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/** |
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* @param array $recv |
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*/ |
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private function messaging(array $recv) : void |
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{ |
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switch ($recv[0]) { |
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case 'message': |
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[1 => $channel, 2 => $payload] = $recv; |
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break; |
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case 'pmessage': |
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[2 => $channel, 3 => $payload] = $recv; |
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break; |
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case 'subscribe': |
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case 'psubscribe': |
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$this->subscribed = true; |
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$this->acknowledge->resolve(); |
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return; |
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case 'unsubscribe': |
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case 'punsubscribe': |
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$this->subscribed = false; |
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$this->acknowledge->resolve(); |
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unset($this->consumer); |
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return; |
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} |
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if (isset($channel) && isset($payload)) { |
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$this->consuming()->send(new Message($channel, $payload)); |
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} |
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} |
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} |
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carno-php /
redis
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