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