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<?php |
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/** |
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* Dead simple, high performance, drop-in bridge to Golang RPC with zero dependencies |
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* |
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* @author Valentin V |
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*/ |
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declare(strict_types=1); |
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namespace Spiral\Goridge; |
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use Throwable; |
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abstract class Relay |
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{ |
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public const TCP_SOCKET = 'tcp'; |
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public const UNIX_SOCKET = 'unix'; |
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public const STREAM = 'pipes'; |
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private const CONNECTION = '/(?P<protocol>[^:\/]+):\/\/(?P<arg1>[^:]+)(:(?P<arg2>[^:]+))?/'; |
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public static function create(string $connection): RelayInterface |
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{ |
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if (!preg_match(self::CONNECTION, strtolower($connection), $match)) { |
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throw new Exceptions\RelayFactoryException('unsupported connection format'); |
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} |
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switch ($match['protocol']) { |
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case self::TCP_SOCKET: |
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//fall through |
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case self::UNIX_SOCKET: |
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return new SocketRelay( |
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$match['arg1'], |
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isset($match['arg2']) ? (int)$match['arg2'] : null, |
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$match['protocol'] === self::TCP_SOCKET ? SocketRelay::SOCK_TCP : SocketRelay::SOCK_UNIX |
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); |
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case self::STREAM: |
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if (!isset($match['arg2'])) { |
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throw new Exceptions\RelayFactoryException('unsupported stream connection format'); |
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} |
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return new StreamRelay(self::openIn($match['arg1']), self::openOut($match['arg2'])); |
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default: |
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throw new Exceptions\RelayFactoryException('unknown connection protocol'); |
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} |
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} |
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/** |
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* @param string $input |
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* @return resource |
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*/ |
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private static function openIn(string $input) |
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{ |
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try { |
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$resource = fopen("php://$input", 'rb'); |
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if ($resource === false) { |
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throw new Exceptions\RelayFactoryException('could not initiate `in` stream resource'); |
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} |
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return $resource; |
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} catch (Throwable $e) { |
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throw new Exceptions\RelayFactoryException( |
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'could not initiate `in` stream resource', |
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$e->getCode(), |
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$e |
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); |
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} |
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} |
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/** |
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* @param string $output |
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* @return resource |
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*/ |
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private static function openOut(string $output) |
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{ |
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try { |
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$resource = fopen("php://$output", 'wb'); |
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if ($resource === false) { |
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throw new Exceptions\RelayFactoryException('could not initiate `out` stream resource'); |
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} |
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return $resource; |
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} catch (Throwable $e) { |
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throw new Exceptions\RelayFactoryException( |
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'could not initiate `out` stream resource', |
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$e->getCode(), |
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$e |
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); |
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} |
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} |
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} |
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spiral /
goridge
