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<?php |
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namespace seregazhuk\React\Memcached\Connection; |
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use Evenement\EventEmitter; |
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use React\Promise\PromiseInterface; |
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use React\Socket\ConnectionInterface; |
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use React\Socket\ConnectorInterface; |
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use React\Stream\DuplexStreamInterface; |
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class Connection extends EventEmitter |
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{ |
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/** |
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* @var DuplexStreamInterface |
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*/ |
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protected $stream; |
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/** |
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* @var string |
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*/ |
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protected $address; |
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/** |
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* @var ConnectorInterface |
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*/ |
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protected $connector; |
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/** |
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* @var bool |
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*/ |
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protected $isConnecting = false; |
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/** |
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* @var CommandsPool |
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*/ |
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protected $commandsPool; |
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/** |
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* @param string $address |
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* @param ConnectorInterface $connector |
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*/ |
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public function __construct($address, ConnectorInterface $connector) |
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{ |
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$this->address = $address; |
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$this->connector = $connector; |
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$this->commandsPool = new CommandsPool(); |
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} |
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/** |
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* @return PromiseInterface |
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*/ |
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public function connect() |
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{ |
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$this->isConnecting = true; |
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return $this->connector |
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->connect($this->address) |
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->then( |
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[$this, 'onConnected'], |
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[$this, 'onFailed'] |
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); |
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} |
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/** |
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* @param ConnectionInterface $stream |
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*/ |
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public function onConnected(ConnectionInterface $stream) |
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{ |
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$this->stream = $stream; |
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$this->isConnecting = false; |
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$stream->on('data', function ($chunk) { |
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$this->emit('data', [$chunk]); |
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}); |
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$stream->on('close', [$this, 'close']); |
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while ($command = $this->commandsPool->shift()) { |
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$this->stream->write($command); |
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} |
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} |
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public function onFailed() |
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{ |
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$this->cancelConnecting(); |
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$this->emit('failed'); |
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} |
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public function close() |
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{ |
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if ($this->stream) { |
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$this->stream->close(); |
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} |
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$this->cancelConnecting(); |
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$this->emit('close'); |
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} |
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/** |
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* @param string $command |
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*/ |
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public function write($command) |
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{ |
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if ($this->stream && $this->stream->isWritable()) { |
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$this->stream->write($command); |
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return; |
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} |
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$this->commandsPool->add($command); |
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if (!$this->isConnecting) { |
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$this->connect(); |
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} |
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} |
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private function cancelConnecting() |
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{ |
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$this->isConnecting = false; |
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$this->commandsPool->clear(); |
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} |
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} |
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seregazhuk /
php-react-memcached
