Driver::driverConnect()   B
last analyzed

Complexity

Conditions 11
Paths 16

Size

Total Lines 43
Code Lines 21

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 11
eloc 21
c 0
b 0
f 0
nc 16
nop 0
dl 0
loc 43
rs 7.3166

How to fix   Complexity   

Long Method

Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.

For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.

Commonly applied refactorings include:

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<?php
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/**
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 *
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 * This file is part of Phpfastcache.
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 *
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 * @license MIT License (MIT)
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 *
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 * For full copyright and license information, please see the docs/CREDITS.txt and LICENCE files.
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 *
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 * @author Georges.L (Geolim4)  <[email protected]>
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 * @author Contributors  https://github.com/PHPSocialNetwork/phpfastcache/graphs/contributors
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 */
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declare(strict_types=1);
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namespace Phpfastcache\Drivers\Memcache;
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use DateTime;
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use Exception;
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use Memcache as MemcacheSoftware;
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use Phpfastcache\Cluster\AggregatablePoolInterface;
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use Phpfastcache\Config\ConfigurationOption;
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use Phpfastcache\Core\Pool\ExtendedCacheItemPoolInterface;
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use Phpfastcache\Core\Pool\TaggableCacheItemPoolTrait;
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use Phpfastcache\Core\Item\ExtendedCacheItemInterface;
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use Phpfastcache\Entities\DriverStatistic;
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use Phpfastcache\Event\EventManagerInterface;
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use Phpfastcache\Exceptions\PhpfastcacheCoreException;
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use Phpfastcache\Exceptions\PhpfastcacheDriverCheckException;
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use Phpfastcache\Exceptions\PhpfastcacheDriverConnectException;
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use Phpfastcache\Exceptions\PhpfastcacheDriverException;
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use Phpfastcache\Exceptions\PhpfastcacheInvalidArgumentException;
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use Phpfastcache\Exceptions\PhpfastcacheIOException;
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use Phpfastcache\Exceptions\PhpfastcacheLogicException;
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use Phpfastcache\Util\MemcacheDriverCollisionDetectorTrait;
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/**
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 * @property MemcacheSoftware $instance
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 * @method Config getConfig()
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 */
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class Driver implements AggregatablePoolInterface
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{
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    use TaggableCacheItemPoolTrait {
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        __construct as protected __parentConstruct;
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    }
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    use MemcacheDriverCollisionDetectorTrait;
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    protected int $memcacheFlags = 0;
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    /**
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     * Driver constructor.
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     * @param ConfigurationOption $config
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     * @param string $instanceId
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     * @param EventManagerInterface $em
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     * @throws PhpfastcacheDriverConnectException
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     * @throws PhpfastcacheInvalidArgumentException
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     * @throws PhpfastcacheCoreException
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     * @throws PhpfastcacheDriverCheckException
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     * @throws PhpfastcacheIOException
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     */
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    public function __construct(ConfigurationOption $config, string $instanceId, EventManagerInterface $em)
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    {
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        self::checkCollision('Memcache');
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        $this->__parentConstruct($config, $instanceId, $em);
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    }
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    /**
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     * @return bool
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     */
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    public function driverCheck(): bool
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    {
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        return class_exists('Memcache');
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    }
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    /**
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     * @return DriverStatistic
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     */
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    public function getStats(): DriverStatistic
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    {
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        $stats = (array)$this->instance->getstats();
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        $stats['uptime'] = (isset($stats['uptime']) ? $stats['uptime'] : 0);
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        $stats['version'] = (isset($stats['version']) ? $stats['version'] : 'UnknownVersion');
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        $stats['bytes'] = (isset($stats['bytes']) ? $stats['version'] : 0);
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        $date = (new DateTime())->setTimestamp(time() - $stats['uptime']);
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        return (new DriverStatistic())
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            ->setData(implode(', ', array_keys($this->itemInstances)))
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            ->setInfo(sprintf("The memcache daemon v%s is up since %s.\n For more information see RawData.", $stats['version'], $date->format(DATE_RFC2822)))
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            ->setRawData($stats)
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            ->setSize((int)$stats['bytes']);
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    }
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    /**
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     * @return bool
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     * @throws PhpfastcacheDriverException
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     */
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    protected function driverConnect(): bool
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    {
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        $this->instance = new MemcacheSoftware();
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        foreach ($this->getConfig()->getServers() as $server) {
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            try {
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                /**
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                 * If path is provided we consider it as a UNIX Socket
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                 */
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                if (!empty($server['path'])) {
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                    $this->instance->addServer($server['path'], 0);
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                } elseif (!empty($server['host'])) {
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                    $this->instance->addServer($server['host'], $server['port']);
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                }
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                if (!empty($server['saslUser']) && !empty($server['saslPassword'])) {
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                    throw new PhpfastcacheDriverException('Unlike Memcached, Memcache does not support SASL authentication');
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                }
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            } catch (Exception $e) {
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                throw new PhpfastcacheDriverConnectException(
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                    sprintf(
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                        'Failed to connect to memcache host/path "%s" with the following error: %s',
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                        $server['host'] ?: $server['path'],
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                        $e->getMessage()
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                    )
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                );
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            }
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            /**
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             * Since Memcached does not throw
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             * any error if not connected ...
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             */
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            if (
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                !$this->instance->getServerStatus(
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                    !empty($server['path']) ? $server['path'] : $server['host'],
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                    !empty($server['port']) ? $server['port'] : 0
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                )
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            ) {
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                throw new PhpfastcacheDriverException('Memcache seems to not be connected');
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            }
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        }
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        return true;
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    }
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    /**
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     * @param ExtendedCacheItemInterface $item
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     * @return ?array<string, mixed>
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     */
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    protected function driverRead(ExtendedCacheItemInterface $item): ?array
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    {
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        $val = $this->instance->get($item->getKey());
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        if (empty($val) || !\is_array($val)) {
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            return null;
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        }
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        return $val;
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    }
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    /**
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     * @param ExtendedCacheItemInterface $item
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     * @return mixed
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     * @throws PhpfastcacheInvalidArgumentException
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     * @throws PhpfastcacheLogicException
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     */
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    protected function driverWrite(ExtendedCacheItemInterface $item): bool
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    {
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        $ttl = $item->getExpirationDate()->getTimestamp() - time();
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        // Memcache will only allow an expiration timer less than 2592000 seconds,
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        // otherwise, it will assume you're giving it a UNIX timestamp.
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        if ($ttl > 2592000) {
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            $ttl = time() + $ttl;
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        }
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        return $this->instance->set($item->getKey(), $this->driverPreWrap($item), $this->memcacheFlags, $ttl);
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    }
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    /**
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     * @param string $key
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     * @param string $encodedKey
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     * @return bool
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     */
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    protected function driverDelete(string $key, string $encodedKey): bool
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    {
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        return $this->instance->delete($key);
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    }
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    /**
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     * @return bool
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     */
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    protected function driverClear(): bool
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    {
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        return $this->instance->flush();
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    }
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}
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