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<?php |
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/** |
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* This file is part of the Tarantool Client package. |
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* |
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* (c) Eugene Leonovich <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Tarantool\Client\Connection; |
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use Tarantool\Client\Exception\CommunicationFailed; |
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use Tarantool\Client\Exception\ConnectionFailed; |
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use Tarantool\Client\Greeting; |
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use Tarantool\Client\Packer\PacketLength; |
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final class StreamConnection implements Connection |
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{ |
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public const DEFAULT_URI = 'tcp://127.0.0.1:3301'; |
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private const DEFAULT_OPTIONS = [ |
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'connect_timeout' => 5, |
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'socket_timeout' => 5, |
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'tcp_nodelay' => true, |
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'persistent' => false, |
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]; |
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private $stream; |
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private $streamContext; |
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private $uri; |
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private $options; |
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private $greeting; |
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private function __construct(string $uri, array $options) |
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{ |
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$this->uri = $uri; |
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$this->options = $options + self::DEFAULT_OPTIONS; |
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} |
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public static function createTcp(string $uri = self::DEFAULT_URI, array $options = []) : self |
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{ |
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$self = new self($uri, $options); |
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if ($self->options['tcp_nodelay'] ?? false) { |
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$self->streamContext = \stream_context_create(['socket' => ['tcp_nodelay' => true]]); |
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} |
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return $self; |
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} |
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public static function createUds(string $uri, array $options = []) : self |
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{ |
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return new self($uri, $options); |
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} |
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public static function create(string $uri, array $options = []) : self |
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{ |
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return 0 === \strpos($uri, 'unix://') |
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? self::createUds($uri, $options) |
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: self::createTcp($uri, $options); |
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} |
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public function open() : ?Greeting |
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{ |
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if (\is_resource($this->stream)) { |
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return $this->greeting; |
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} |
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$flags = $this->options['persistent'] |
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? \STREAM_CLIENT_CONNECT | \STREAM_CLIENT_PERSISTENT |
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: \STREAM_CLIENT_CONNECT; |
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$stream = $this->streamContext ? @\stream_socket_client( |
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$this->uri, |
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$errorCode, |
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$errorMessage, |
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(float) $this->options['connect_timeout'], |
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$flags, |
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$this->streamContext |
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) : @\stream_socket_client( |
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$this->uri, |
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$errorCode, |
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$errorMessage, |
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(float) $this->options['connect_timeout'], |
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$flags |
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); |
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if (false === $stream) { |
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throw ConnectionFailed::fromUriAndReason($this->uri, $errorMessage); |
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} |
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$this->stream = $stream; |
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\stream_set_timeout($this->stream, $this->options['socket_timeout']); |
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if ($this->options['persistent'] && \ftell($this->stream)) { |
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return $this->greeting; |
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} |
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$greeting = $this->read(Greeting::SIZE_BYTES, 'Unable to read greeting.'); |
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return $this->greeting = Greeting::parse($greeting); |
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} |
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public function close() : void |
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{ |
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if (\is_resource($this->stream)) { |
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\fclose($this->stream); |
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} |
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$this->stream = null; |
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$this->greeting = null; |
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} |
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public function isClosed() : bool |
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{ |
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return !\is_resource($this->stream); |
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} |
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public function send(string $data) : string |
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{ |
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if (!\fwrite($this->stream, $data)) { |
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throw new CommunicationFailed('Unable to write request.'); |
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} |
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$length = $this->read(PacketLength::SIZE_BYTES, 'Unable to read response length.'); |
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$length = PacketLength::unpack($length); |
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return $this->read($length, 'Unable to read response.'); |
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} |
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private function read(int $length, string $errorMessage) : string |
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{ |
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if ($data = \stream_get_contents($this->stream, $length)) { |
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return $data; |
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} |
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$meta = \stream_get_meta_data($this->stream); |
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throw new CommunicationFailed($meta['timed_out'] ? 'Read timed out.' : $errorMessage); |
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} |
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} |
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tarantool-php /
client
