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<?php |
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/** |
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* Platine Framework |
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* |
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* Platine Framework is a lightweight, high-performance, simple and elegant |
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* PHP Web framework |
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* |
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* This content is released under the MIT License (MIT) |
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* |
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* Copyright (c) 2020 Platine Framework |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in all |
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* copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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*/ |
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/** |
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* @file RedisClient.php |
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* |
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* The lightweight Redis client class |
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* |
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* @package Platine\Framework\Helper |
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* @author Platine Developers team |
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* @copyright Copyright (c) 2020 |
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* @license http://opensource.org/licenses/MIT MIT License |
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* @link https://www.platine-php.com |
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* @version 1.0.0 |
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* @filesource |
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*/ |
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declare(strict_types=1); |
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namespace Platine\Framework\Helper; |
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use RuntimeException; |
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/** |
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* @class RedisClient |
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* @package Platine\Framework\Helper |
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* |
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* @method string get(string $key) |
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* @method string del(string $key) |
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* @method string ttl(string $key) |
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* @method string exists(string $key) |
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* @method string persist(string $key) |
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* @method string incr(string $key) |
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* @method string decr(string $key) |
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* @method string expire(string $key, int $seconds) |
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* @method string incrby(string $key, int $increment) |
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* @method string decrby(string $key, int $decrement) |
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* @method string set(string $key, string $value) |
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*/ |
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class RedisClient |
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{ |
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/** |
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* The connection socket |
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* line length not limited |
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* @var resource|false |
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*/ |
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protected $socket = false; |
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/** |
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* Create new instance |
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* @param string $host the Redis server address |
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* @param int $port the Redis server port |
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*/ |
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public function __construct( |
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protected string $host = 'localhost', |
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protected int $port = 6379, |
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) { |
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} |
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/** |
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* Dynamic method call based on Redis commands |
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* @see https://redis.io/docs/latest/commands/ |
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* @param string $method |
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* @param array<mixed> $args |
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* @return mixed |
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*/ |
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public function __call(string $method, array $args): mixed |
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{ |
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array_unshift($args, $method); |
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$cmd = sprintf('*%d', count($args)) . "\r\n"; |
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foreach ($args as $item) { |
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$cmd .= '$' . strlen($item) . "\r\n" . $item . "\r\n"; |
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} |
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fwrite($this->getSocket(), $cmd); |
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return $this->getResponse(); |
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} |
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/** |
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* Return the response from socket |
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* @return array<string>|string|string |
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* @throws RuntimeException |
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*/ |
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protected function getResponse(): array|string|null |
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{ |
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$line = fgets($this->getSocket()); |
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if ($line === false) { |
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throw new RuntimeException('Can not read from redis socket'); |
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} |
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[$type, $result] = [$line[0], substr($line, 1, strlen($line) - 3)]; |
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if ($type === '-') { |
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// Error |
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throw new RuntimeException(sprintf('Redis socket return error: %s', $result)); |
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} |
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if ($type === '$') { // bulk reply |
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if ($result === '-1') { |
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$result = null; |
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} else { |
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/** @var int<1, max> $length */ |
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$length = (int) $result + 2; |
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$line = fread($this->getSocket(), $length); |
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if ($line === false) { |
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throw new RuntimeException('Can not read from redis socket for bulk reply'); |
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} |
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$result = substr($line, 0, strlen($line) - 2); |
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} |
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} elseif ($type === '*') { // multi-bulk reply |
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$count = (int) $result; |
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for ($i = 0 , $result = []; $i < $count; $i++) { |
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$result[] = $this->getResponse(); |
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} |
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} |
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return $result; |
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} |
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/** |
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* Return the socket instance |
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* @return resource |
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* @throws RuntimeException |
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*/ |
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protected function getSocket() |
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{ |
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if (is_resource($this->socket)) { |
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return $this->socket; |
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} |
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$errorCode = null; |
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$errorMessage = null; |
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$socket = stream_socket_client( |
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sprintf('%s:%d', $this->host, $this->port), |
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$errorCode, |
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$errorMessage |
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); |
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if ($socket === false) { |
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throw new RuntimeException(sprintf( |
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'Can not connect to Redis [%d] -> [%s]', |
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$errorCode, |
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$errorMessage |
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)); |
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} |
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return $this->socket = $socket; |
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} |
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} |
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platine-php /
framework
