phpFastCache\Core\Pool\DriverBaseTrait

Complexity

Total Complexity

39

Size/Duplication

Total Lines	382
Duplicated Lines	0 %

Coupling/Cohesion

Components	3
Dependencies	4

Importance

Changes

0

22 Methods

Rating	Name	Duplication	Size	Complexity
A	setup()	0	11	2
A	getConfig()	0	4	1
A	readfile()	0	20	4
B	writefile()	0	31	2
A	encode()	0	4	1
A	decode()	0	4	1
A	isPHPModule()	0	12	3
A	isExistingDriver()	0	4	1
A	_getTagName()	0	4	1
A	driverPreWrap()	0	22	3
A	driverUnwrapData()	0	4	1
A	driverUnwrapTags()	0	4	1
A	driverUnwrapEdate()	0	4	1
A	driverUnwrapCdate()	0	4	1
A	driverUnwrapMdate()	0	4	1
A	getDriverName()	0	6	2
B	driverWriteTags()	0	71	6
A	getTagKey()	0	4	1
A	getTagKeys()	0	8	2
A	isValidOption()	0	8	2
A	getRequiredOptions()	0	4	1
A	getValidOptions()	0	4	1

<?php
/**
 *
 * This file is part of phpFastCache.
 *
 * @license MIT License (MIT)
 *
 * For full copyright and license information, please see the docs/CREDITS.txt file.
 *
 * @author Khoa Bui (khoaofgod)  <khoaofgod@gmail.com> http://www.phpfastcache.com
 * @author Georges.L (Geolim4)  <contact@geolim4.com>
 *
 */
namespace phpFastCache\Core\Pool;

use phpFastCache\Exceptions\phpFastCacheDriverException;
use phpFastCache\Core\Item\ExtendedCacheItemInterface;


/**
 * Class DriverBaseTrait
 * @package phpFastCache\Cache
 */
trait DriverBaseTrait
{
    use ExtendedCacheItemPoolTrait;

    /**
     * @var array default options, this will be merge to Driver's Options
     */
    protected $config = [];

    /**
     * @var bool
     */
    protected $fallback = false;

    /**
     * @var mixed Instance of driver service
     */
    protected $instance;
    
    /**
     * @param $config_name
     * @param string $value
     */
    public function setup($config_name, $value = '')
    {
        /**
         * Config for class
         */
        if (is_array($config_name)) {
            $this->config = array_merge($this->config, $config_name);
        } else {
            $this->config[ $config_name ] = $value;
        }
    }

    /**
     * @return array
     */
    public function getConfig()
    {
        return $this->config;
    }

    /**
     * @param $file
     * @return string
     * @throws phpFastCacheDriverException
     */
    protected function readfile($file)
    {
        if (function_exists('file_get_contents')) {
            return file_get_contents($file);

        } else {
            $string = '';

            $file_handle = @fopen($file, 'r');
            if (!$file_handle) {
                throw new phpFastCacheDriverException("Cannot read file located at: {$file}");
            }
            while (!feof($file_handle)) {
                $line = fgets($file_handle);
                $string .= $line;
            }
            fclose($file_handle);

            return $string;
        }
    }

    /**
     * @param string $file
     * @param string $data
     * @param bool $secureFileManipulation
     * @return bool
     */
    protected function writefile($file, $data, $secureFileManipulation = false)
    {
        /**
         * @eventName CacheWriteFileOnDisk
         * @param ExtendedCacheItemPoolInterface $this
         * @param string $file
         * @param bool $secureFileManipulation
         *
         */
        $this->eventManager->dispatch('CacheWriteFileOnDisk', $this, $file, $secureFileManipulation);

        if($secureFileManipulation){
            $tmpFilename = realpath(dirname($file) . '/tmp_' . md5(
                str_shuffle(uniqid($this->getDriverName(), false))
                . str_shuffle(uniqid($this->getDriverName(), false))
              ));

            $f = fopen($tmpFilename, 'w+');
            flock($f, LOCK_EX);
            $octetWritten = fwrite($f, $data);
            flock($f, LOCK_UN);
            fclose($f);
            rename($tmpFilename, $file);

        }else{
            $f = fopen($file, 'w+');
            $octetWritten = fwrite($f, $data);
            fclose($f);
        }

        return $octetWritten !== false;
    }

    /**
     * Encode data types such as object/array
     * for driver that does not support
     * non-scalar value
     * @param $data
     * @return string
     */
    protected function encode($data)
    {
        return serialize($data);
    }

    /**
     * Decode data types such as object/array
     * for driver that does not support
     * non-scalar value
     * @param $value
     * @return mixed
     */
    protected function decode($value)
    {
        return @unserialize($value);

    }

    /**
     * Check phpModules or CGI
     * @return bool
     */
    protected function isPHPModule()
    {
        if (PHP_SAPI === 'apache2handler') {
            return true;
        } else {
            if (strpos(PHP_SAPI, 'handler') !== false) {
                return true;
            }
        }

        return false;
    }


    /**
     * @param $class
     * @return bool
     */
    protected function isExistingDriver($class)
    {
        return class_exists("\\phpFastCache\\Drivers\\{$class}");
    }


    /**
     * @param $tag
     * @return string
     */
    protected function _getTagName($tag)
    {
        return "__tag__" . $tag;
    }

    /**
     * @param \phpFastCache\Core\Item\ExtendedCacheItemInterface $item
     * @return array
     */
    public function driverPreWrap(ExtendedCacheItemInterface $item)
    {
        $wrap = [
          self::DRIVER_DATA_WRAPPER_INDEX => $item->get(),
          self::DRIVER_TAGS_WRAPPER_INDEX => $item->getTags(),
          self::DRIVER_EDATE_WRAPPER_INDEX => $item->getExpirationDate(),
        ];

        if($this->config['itemDetailedDate']){
            $wrap[ self::DRIVER_MDATE_WRAPPER_INDEX ] = new \DateTime();
            /**
             * If the creation date exists
             * reuse it else set a new Date
             */
            $wrap[ self::DRIVER_CDATE_WRAPPER_INDEX ] = $item->getCreationDate() ?: new \DateTime();
        }else{
            $wrap[ self::DRIVER_MDATE_WRAPPER_INDEX ] = null;
            $wrap[ self::DRIVER_CDATE_WRAPPER_INDEX ] = null;
        }

        return $wrap;
    }

    /**
     * @param array $wrapper
     * @return mixed
     */
    public function driverUnwrapData(array $wrapper)
    {
        return $wrapper[ self::DRIVER_DATA_WRAPPER_INDEX ];
    }

    /**
     * @param array $wrapper
     * @return mixed
     */
    public function driverUnwrapTags(array $wrapper)
    {
        return $wrapper[ self::DRIVER_TAGS_WRAPPER_INDEX ];
    }


    /**
     * @param array $wrapper
     * @return \DateTime
     */
    public function driverUnwrapEdate(array $wrapper)
    {
        return $wrapper[ self::DRIVER_EDATE_WRAPPER_INDEX ];
    }

    /**
     * @param array $wrapper
     * @return \DateTime
     */
    public function driverUnwrapCdate(array $wrapper)
    {
        return $wrapper[ self::DRIVER_CDATE_WRAPPER_INDEX ];
    }


    /**
     * @param array $wrapper
     * @return \DateTime
     */
    public function driverUnwrapMdate(array $wrapper)
    {
        return $wrapper[ self::DRIVER_MDATE_WRAPPER_INDEX ];
    }

    /**
     * @return string
     */
    public function getDriverName()
    {
        static $driverName;

        return ($driverName ?: $driverName = ucfirst(substr(strrchr((new \ReflectionObject($this))->getNamespaceName(), '\\'), 1)));
    }

    /**
     * @param \phpFastCache\Core\Item\ExtendedCacheItemInterface $item
     * @return bool
     * @throws \LogicException
     */
    public function driverWriteTags(ExtendedCacheItemInterface $item)
    {
        /**
         * Do not attempt to write tags
         * on tags item, it can leads
         * to an infinite recursive calls
         */
        if(strpos($item->getKey(), self::DRIVER_TAGS_KEY_PREFIX ) === 0){
            throw new \LogicException('Trying to set tag(s) to an Tag item index: ' . $item->getKey());
        }

        /**
         * @var $tagsItems ExtendedCacheItemInterface[]
         */
        $tagsItems = $this->getItems($this->getTagKeys($item->getTags()));

        foreach ($tagsItems as $tagsItem) {
            $data = $tagsItem->get();
            $expTimestamp = $item->getExpirationDate()->getTimestamp();

            /**
             * Using the key will
             * avoid to use array_unique
             * that has slow performances
             */

            $tagsItem->set(array_merge((array) $data, [$item->getKey() => $expTimestamp]));

            /**
             * Set the expiration date
             * of the $tagsItem based
             * on the older $item
             * expiration date
             */
            if ($expTimestamp > $tagsItem->getExpirationDate()->getTimestamp()) {
                $tagsItem->expiresAt($item->getExpirationDate());

It seems like $item->getExpirationDate() can be null; however, expiresAt() does not accept null, maybe add an additional type check?

            }
            $this->driverWrite($tagsItem);
            $tagsItem->setHit(true);
        }

        /**
         * Also update removed tags to
         * keep the index up to date
         */
        $tagsItems = $this->getItems($this->getTagKeys($item->getRemovedTags()));

        foreach ($tagsItems as $tagsItem) {
            $data = (array) $tagsItem->get();

            unset($data[ $item->getKey() ]);
            $tagsItem->set($data);

            /**
             * Recalculate the expiration date
             *
             * If the $tagsItem does not have
             * any cache item references left
             * then remove it from tagsItems index
             */
            if (count($data)) {
                $tagsItem->expiresAt(max($data));
                $this->driverWrite($tagsItem);
                $tagsItem->setHit(true);
            } else {
                $this->deleteItem($tagsItem);

$tagsItem is of type object<Psr\Cache\CacheItemInterface>, but the function expects a string.

            }
        }

        return true;
    }

    /**
     * @param $key
     * @return string
     */
    public function getTagKey($key)
    {
        return self::DRIVER_TAGS_KEY_PREFIX . $key;
    }

    /**
     * @param $key
     * @return string
     */
    public function getTagKeys(array $keys)
    {
        foreach ($keys as &$key) {
            $key = $this->getTagKey($key);
        }

        return $keys;
    }

    /**
     * @param string $optionName
     * @param mixed $optionValue
     * @return bool
     * @throws \InvalidArgumentException
     */
    public static function isValidOption($optionName, $optionValue)

The parameter $optionValue is not used and could be removed.

    {
        if (!is_string($optionName)) {
            throw new \InvalidArgumentException('$optionName must be a string');
        }

        return true;
    }

    /**
     * @return array
     */
    public static function getRequiredOptions()
    {
        return [];
    }

    /**
     * @return array
     */
    public static function getValidOptions()
    {
        return [];
    }
}