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<?php
namespace Illuminate\Redis;
use Closure;
use Predis\Client;
use Illuminate\Support\Arr;
use Illuminate\Contracts\Redis\Database as DatabaseContract;
class Database implements DatabaseContract
{
/**
* The host address of the database.
*
* @var array
*/
protected $clients;
/**
* Create a new Redis connection instance.
*
* @param array $servers
* @return void
*/
public function __construct(array $servers = [])
{
$cluster = Arr::pull($servers, 'cluster');
$options = (array) Arr::pull($servers, 'options');
if ($cluster) {
$this->clients = $this->createAggregateClient($servers, $options);
} else {
$this->clients = $this->createSingleClients($servers, $options);
}
}
/**
* Create a new aggregate client supporting sharding.
*
* @param array $servers
* @param array $options
* @return array
*/
protected function createAggregateClient(array $servers, array $options = [])
{
return ['default' => new Client(array_values($servers), $options)];
}
/**
* Create an array of single connection clients.
*
* @param array $servers
* @param array $options
* @return array
*/
protected function createSingleClients(array $servers, array $options = [])
{
$clients = [];
foreach ($servers as $key => $server) {
$clients[$key] = new Client($server, $options);
}
return $clients;
}
/**
* Get a specific Redis connection instance.
*
* @param string $name
* @return \Predis\ClientInterface|null
*/
public function connection($name = 'default')
{
return Arr::get($this->clients, $name ?: 'default');
}
/**
* Run a command against the Redis database.
*
* @param string $method
* @param array $parameters
* @return mixed
*/
public function command($method, array $parameters = [])
{
return call_user_func_array([$this->clients['default'], $method], $parameters);
}
/**
* Subscribe to a set of given channels for messages.
*
* @param array|string $channels
* @param \Closure $callback
* @param string $connection
* @param string $method
* @return void
*/
public function subscribe($channels, Closure $callback, $connection = null, $method = 'subscribe')
{
$loop = $this->connection($connection)->pubSubLoop();
call_user_func_array([$loop, $method], (array) $channels);
foreach ($loop as $message) {
if ($message->kind === 'message' || $message->kind === 'pmessage') {
call_user_func($callback, $message->payload, $message->channel);
}
}
unset($loop);
}
/**
* Subscribe to a set of given channels with wildcards.
*
* @param array|string $channels
* @param \Closure $callback
* @param string $connection
* @return void
*/
public function psubscribe($channels, Closure $callback, $connection = null)
{
return $this->subscribe($channels, $callback, $connection, __FUNCTION__);
}
/**
* Dynamically make a Redis command.
*
* @param string $method
* @param array $parameters
* @return mixed
*/
public function __call($method, $parameters)
{
return $this->command($method, $parameters);
}
}