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Daniele Alessandri
59813cd74e
This is just a convention implemented to client options supporting
callable initializers such as "profile", "cluster" and "replication".
This is useful to get a fully-initialized default value and perform
additional operations before returning it. An example with "profile":
$options = array(
'commands' => array(
'test1' => 'Predis\Command\ConnectionEcho',
'test2' => 'Predis\Command\ConnectionEcho',
),
'profile' => function ($options, $option) {
$profile = $option->getDefault($options);
if (is_array($options->commands)) {
foreach ($options->commands as $id => $cmd) {
$profile->defineCommand($id, $cmd);
}
}
return $profile;
},
);
79 lines
2.2 KiB
PHP
79 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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