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.
78 lines
2.2 KiB
PHP
78 lines
2.2 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\Option;
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use Predis\Connection\MasterSlaveReplication;
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use Predis\Connection\ReplicationConnectionInterface;
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/**
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* Option class that returns a replication connection 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 ClientReplication extends AbstractOption
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{
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/**
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* Checks if the specified value is a valid instance of ReplicationConnectionInterface.
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*
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* @param ReplicationConnectionInterface $connection Instance of a replication connection.
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* @return ReplicationConnectionInterface
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*/
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protected function checkInstance($connection)
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{
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if (!$connection instanceof ReplicationConnectionInterface) {
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throw new \InvalidArgumentException('Instance of Predis\Connection\ReplicationConnectionInterface expected');
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}
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return $connection;
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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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$connection = call_user_func($value, $options, $this);
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if (!$connection instanceof ReplicationConnectionInterface) {
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throw new \InvalidArgumentException('Instance of Predis\Connection\ReplicationConnectionInterface expected');
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}
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return $connection;
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}
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if (is_string($value)) {
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if (!class_exists($value)) {
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throw new \InvalidArgumentException("Class $value does not exist");
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}
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if (!($connection = new $value()) instanceof ReplicationConnectionInterface) {
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throw new \InvalidArgumentException('Instance of Predis\Connection\ReplicationConnectionInterface expected');
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}
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return $connection;
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}
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if ($value == true) {
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return $this->getDefault($options);
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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 MasterSlaveReplication();
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}
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}
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