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<?php |
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namespace SilverStripe\Core\Cache; |
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use Psr\Log\LoggerAwareInterface; |
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use Psr\Log\LoggerInterface; |
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use Psr\SimpleCache\CacheInterface; |
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use SilverStripe\Control\Director; |
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use SilverStripe\Core\Injector\Injector; |
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use Symfony\Component\Cache\Simple\FilesystemCache; |
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use Symfony\Component\Cache\Simple\ApcuCache; |
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use Symfony\Component\Cache\Simple\ChainCache; |
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use Symfony\Component\Cache\Simple\PhpFilesCache; |
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use Symfony\Component\Cache\Adapter\ApcuAdapter; |
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use Symfony\Component\Cache\Adapter\PhpFilesAdapter; |
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/** |
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* Returns the most performant combination of caches available on the system: |
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* - `PhpFilesCache` (PHP 7 with opcache enabled) |
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* - `ApcuCache` (requires APC) with a `FilesystemCache` fallback (for larger cache volumes) |
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* - `FilesystemCache` if none of the above is available |
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* |
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* Modelled after `Symfony\Component\Cache\Adapter\AbstractAdapter::createSystemCache()` |
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*/ |
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class DefaultCacheFactory implements CacheFactory |
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{ |
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/** |
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* @var string Absolute directory path |
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*/ |
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protected $args = []; |
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/** |
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* @var LoggerInterface |
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*/ |
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protected $logger; |
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/** |
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* @param array $args List of global options to merge with args during create() |
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* @param LoggerInterface $logger Logger instance to assign |
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*/ |
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public function __construct($args = [], LoggerInterface $logger = null) |
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{ |
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$this->args = $args; |
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$this->logger = $logger; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function create($service, array $args = array()) |
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{ |
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// merge args with default |
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$args = array_merge($this->args, $args); |
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$namespace = isset($args['namespace']) ? $args['namespace'] : ''; |
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$defaultLifetime = isset($args['defaultLifetime']) ? $args['defaultLifetime'] : 0; |
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$directory = isset($args['directory']) ? $args['directory'] : null; |
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$version = isset($args['version']) ? $args['version'] : null; |
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// In-memory caches are typically more resource constrained (number of items and storage space). |
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// Give cache consumers an opt-out if they are expecting to create large caches with long lifetimes. |
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$useInMemoryCache = isset($args['useInMemoryCache']) ? $args['useInMemoryCache'] : true; |
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// Check support |
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$apcuSupported = ($this->isAPCUSupported() && $useInMemoryCache); |
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$phpFilesSupported = $this->isPHPFilesSupported(); |
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// If apcu isn't supported, phpfiles is the next best preference |
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if (!$apcuSupported && $phpFilesSupported) { |
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return $this->createCache(PhpFilesCache::class, [$namespace, $defaultLifetime, $directory]); |
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} |
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// Create filessytem cache |
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$fs = $this->createCache(FilesystemCache::class, [$namespace, $defaultLifetime, $directory]); |
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if (!$apcuSupported) { |
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return $fs; |
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} |
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// Chain this cache with ApcuCache |
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// Note that the cache lifetime will be shorter there by default, to ensure there's enough |
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// resources for "hot cache" items in APCu as a resource constrained in memory cache. |
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$apcuNamespace = $namespace . ($namespace ? '_' : '') . md5(BASE_PATH); |
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$apcu = $this->createCache(ApcuCache::class, [$apcuNamespace, (int) $defaultLifetime / 5, $version]); |
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return $this->createCache(ChainCache::class, [[$apcu, $fs]]); |
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} |
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/** |
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* Determine if apcu is supported |
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* |
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* @return bool |
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*/ |
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protected function isAPCUSupported() |
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{ |
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static $apcuSupported = null; |
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if (null === $apcuSupported) { |
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// Need to check for CLI because Symfony won't: https://github.com/symfony/symfony/pull/25080 |
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$apcuSupported = Director::is_cli() |
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? ini_get('apc.enable_cli') && ApcuAdapter::isSupported() |
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: ApcuAdapter::isSupported(); |
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} |
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return $apcuSupported; |
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} |
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/** |
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* Determine if PHP files is supported |
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* |
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* @return bool |
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*/ |
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protected function isPHPFilesSupported() |
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{ |
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static $phpFilesSupported = null; |
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if (null === $phpFilesSupported) { |
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$phpFilesSupported = PhpFilesAdapter::isSupported(); |
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} |
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return $phpFilesSupported; |
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} |
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/** |
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* @param string $class |
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* @param array $args |
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* @return CacheInterface |
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*/ |
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protected function createCache($class, $args) |
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{ |
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/** @var CacheInterface $cache */ |
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$cache = Injector::inst()->createWithArgs($class, $args); |
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// Assign cache logger |
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if ($this->logger && $cache instanceof LoggerAwareInterface) { |
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$cache->setLogger($this->logger); |
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} |
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return $cache; |
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} |
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} |
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silverstripe /
silverstripe-framework
Loading history...
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..