c58f935fdc
The example (and related documentation at redis.io) was not updated for 5 years. Redis had no sorted sets and hashes when the original code was written (!). An update was really needed. We also use a modern PHP client now: Predis. A copy is shipped within this repository to make life easier to newcomers trying Redis for the first time via this example.
135 lines
3.2 KiB
PHP
135 lines
3.2 KiB
PHP
<?php
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/*
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* This file is part of the Predis package.
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*
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* (c) Daniele Alessandri <suppakilla@gmail.com>
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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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namespace Predis\Connection;
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use Predis\Command\CommandInterface;
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use Predis\Protocol\ProtocolInterface;
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use Predis\Protocol\Text\TextProtocol;
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/**
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* Connection abstraction to Redis servers based on PHP's stream that uses an
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* external protocol processor defining the protocol used for the communication.
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*
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* @author Daniele Alessandri <suppakilla@gmail.com>
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*/
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class ComposableStreamConnection extends StreamConnection implements ComposableConnectionInterface
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{
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private $protocol;
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/**
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* @param ConnectionParametersInterface $parameters Parameters used to initialize the connection.
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* @param ProtocolInterface $protocol A protocol processor.
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*/
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public function __construct(ConnectionParametersInterface $parameters, ProtocolInterface $protocol = null)
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{
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$this->parameters = $this->checkParameters($parameters);
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$this->protocol = $protocol ?: new TextProtocol();
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}
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/**
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* {@inheritdoc}
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*/
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public function setProtocol(ProtocolInterface $protocol)
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{
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if ($protocol === null) {
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throw new \InvalidArgumentException("The protocol instance cannot be a null value");
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}
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$this->protocol = $protocol;
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}
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/**
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* {@inheritdoc}
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*/
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public function getProtocol()
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{
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return $this->protocol;
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}
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/**
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* {@inheritdoc}
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*/
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public function writeBytes($buffer)
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{
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parent::writeBytes($buffer);
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}
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/**
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* {@inheritdoc}
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*/
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public function readBytes($length)
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{
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if ($length <= 0) {
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throw new \InvalidArgumentException('Length parameter must be greater than 0');
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}
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$value = '';
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$socket = $this->getResource();
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do {
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$chunk = fread($socket, $length);
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if ($chunk === false || $chunk === '') {
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$this->onConnectionError('Error while reading bytes from the server');
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}
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$value .= $chunk;
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} while (($length -= strlen($chunk)) > 0);
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return $value;
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}
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/**
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* {@inheritdoc}
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*/
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public function readLine()
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{
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$value = '';
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$socket = $this->getResource();
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do {
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$chunk = fgets($socket);
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if ($chunk === false || $chunk === '') {
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$this->onConnectionError('Error while reading line from the server');
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}
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$value .= $chunk;
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} while (substr($value, -2) !== "\r\n");
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return substr($value, 0, -2);
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}
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/**
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* {@inheritdoc}
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*/
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public function writeCommand(CommandInterface $command)
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{
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$this->protocol->write($this, $command);
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}
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/**
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* {@inheritdoc}
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*/
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public function read()
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{
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return $this->protocol->read($this);
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}
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/**
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* {@inheritdoc}
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*/
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public function __sleep()
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{
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return array_diff(array_merge(parent::__sleep(), array('protocol')), array('mbiterable'));
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}
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}
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