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<?php
namespace Illuminate\Cache;
use Memcached;
class MemcachedConnector
{
/**
* Create a new Memcached connection.
*
* @param array $servers
* @param string|null $connectionId
* @param array $options
* @param array $credentials
* @return \Memcached
*/
public function connect(array $servers, $connectionId = null, array $options = [], array $credentials = [])
{
$memcached = $this->getMemcached(
$connectionId, $credentials, $options
);
if (! $memcached->getServerList()) {
// For each server in the array, we'll just extract the configuration and add
// the server to the Memcached connection. Once we have added all of these
// servers we'll verify the connection is successful and return it back.
foreach ($servers as $server) {
$memcached->addServer(
$server['host'], $server['port'], $server['weight']
);
}
}
return $memcached;
}
/**
* Get a new Memcached instance.
*
* @param string|null $connectionId
* @param array $credentials
* @param array $options
* @return \Memcached
*/
protected function getMemcached($connectionId, array $credentials, array $options)
{
$memcached = $this->createMemcachedInstance($connectionId);
if (count($credentials) === 2) {
$this->setCredentials($memcached, $credentials);
}
if (count($options)) {
$memcached->setOptions($options);
}
return $memcached;
}
/**
* Create the Memcached instance.
*
* @param string|null $connectionId
* @return \Memcached
*/
protected function createMemcachedInstance($connectionId)
{
return empty($connectionId) ? new Memcached : new Memcached($connectionId);
}
/**
* Set the SASL credentials on the Memcached connection.
*
* @param \Memcached $memcached
* @param array $credentials
* @return void
*/
protected function setCredentials($memcached, $credentials)
{
[$username, $password] = $credentials;
$memcached->setOption(Memcached::OPT_BINARY_PROTOCOL, true);
$memcached->setSaslAuthData($username, $password);
}
}