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.
96 lines
2.8 KiB
PHP
96 lines
2.8 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\Option;
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use Predis\Connection\ClusterConnectionInterface;
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use Predis\Connection\PredisCluster;
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use Predis\Connection\RedisCluster;
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/**
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* Option class that returns a connection cluster to be used by a client.
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*
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* @author Daniele Alessandri <suppakilla@gmail.com>
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*/
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class ClientCluster extends AbstractOption
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{
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/**
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* Checks if the specified value is a valid instance of ClusterConnectionInterface.
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*
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* @param ClusterConnectionInterface $cluster Instance of a connection cluster.
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* @return ClusterConnectionInterface
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*/
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protected function checkInstance($cluster)
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{
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if (!$cluster instanceof ClusterConnectionInterface) {
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throw new \InvalidArgumentException('Instance of Predis\Connection\ClusterConnectionInterface expected');
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}
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return $cluster;
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}
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/**
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* {@inheritdoc}
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*/
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public function filter(ClientOptionsInterface $options, $value)
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{
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if (is_callable($value)) {
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return $this->checkInstance(call_user_func($value, $options, $this));
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}
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$initializer = $this->getInitializer($options, $value);
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return $this->checkInstance($initializer());
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}
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/**
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* Returns an initializer for the specified FQN or type.
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*
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* @param string $fqnOrType Type of cluster or FQN of a class implementing ClusterConnectionInterface.
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* @param ClientOptionsInterface $options Instance of the client options.
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* @return \Closure
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*/
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protected function getInitializer(ClientOptionsInterface $options, $fqnOrType)
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{
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switch ($fqnOrType) {
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case 'predis':
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return function () {
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return new PredisCluster();
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};
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case 'redis':
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return function () use ($options) {
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$connectionFactory = $options->connections;
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$cluster = new RedisCluster($connectionFactory);
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return $cluster;
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};
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default:
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// TODO: we should not even allow non-string values here.
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if (is_string($fqnOrType) && !class_exists($fqnOrType)) {
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throw new \InvalidArgumentException("Class $fqnOrType does not exist");
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}
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return function () use ($fqnOrType) {
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return new $fqnOrType();
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};
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function getDefault(ClientOptionsInterface $options)
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{
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return new PredisCluster();
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}
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}
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