CacheFactory.php
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CacheFactory.php
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	<?php
	declare(strict_types=1);

	namespace Keruald\Cache;

	use Keruald\Cache\Engines\CacheVoid;
	use Keruald\Cache\Exceptions\CacheException;

	/**
	* Cache caller
	*/
	class CacheFactory {

	const DEFAULT_ENGINE = CacheVoid::class;

	/**
	* Loads the cache instance, building it according a configuration array.
	*
	* The correct cache instance to initialize will be determined from the
	* 'engine' key. It should match the name of a Cache class.
	*
	* This method will create an instance of the specified object,
	* calling the load static method from this object class.
	*
	* Example:
	* <code>
	* $config['engine'] = CacheQuux::class;
	* $cache = Cache::load($config); //Cache:load() will call CacheQuux:load();
	* </code>
	*
	* @return Cache the cache instance
	* @throws CacheException
	*/
	static function load (array $config) : Cache {
	$engine = $config["engine"] ?? self::DEFAULT_ENGINE;

	if (!class_exists($engine)) {
	throw new CacheException("Can't initialize $engine cache engine. The class can't be found.");
	}

	return call_user_func([$engine, 'load'], $config);
	}

	}