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<?php |
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declare(strict_types=1); |
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namespace WShafer\Expressive\Symfony\Router\Cache; |
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use Symfony\Component\Routing\Route; |
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use Symfony\Component\Routing\RouteCollection; |
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use WShafer\Expressive\Symfony\Router\Container\InvalidCacheDirectoryException; |
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use WShafer\Expressive\Symfony\Router\Container\InvalidCacheException; |
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use WShafer\Expressive\Symfony\Router\Container\WriteCacheException; |
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/** |
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* @SuppressWarnings(PHPMD.LongVariable) |
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*/ |
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class Cache |
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{ |
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/** |
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* @const string Configuration key used to enable/disable fastroute caching |
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*/ |
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public const CONFIG_CACHE_ENABLED = 'cache_enabled'; |
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/** |
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* @const string Configuration key used to set the cache file path |
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*/ |
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public const CONFIG_CACHE_FILE = 'cache_file'; |
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protected $cacheEnabled = false; |
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protected $cacheFile = null; |
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protected $cache = null; |
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protected $cacheNeedsUpdates = false; |
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public function __construct(array $config = null) |
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{ |
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$this->cacheEnabled = $config[self::CONFIG_CACHE_ENABLED] ?? false; |
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$this->cacheFile = $config[self::CONFIG_CACHE_FILE] ?? null; |
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} |
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public function populateCollectionFromCache(RouteCollection $collection) : RouteCollection |
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{ |
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if (!$this->cacheEnabled) { |
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return $collection; |
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} |
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$routes = $this->fetchCache(); |
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foreach ($routes as $name => $route) { |
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$collection->add($name, $route); |
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} |
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return $collection; |
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} |
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public function add(string $name, Route $route): void |
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{ |
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if (!$this->cacheEnabled) { |
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return; |
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} |
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// Lets pre-compile this for caching |
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$route->compile(); |
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$this->cache[$name] = $route; |
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$this->cacheNeedsUpdates = true; |
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} |
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public function has($name) |
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{ |
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return isset($this->cache[$name]); |
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} |
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public function writeCache() : bool |
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{ |
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if (!$this->cacheEnabled |
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|| !$this->cacheNeedsUpdates |
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) { |
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return true; |
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} |
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$cacheDir = dirname($this->cacheFile); |
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if (!is_dir($cacheDir)) { |
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throw new InvalidCacheDirectoryException(sprintf( |
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'The cache directory "%s" does not exist', |
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$cacheDir |
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)); |
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} |
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if (!is_writable($cacheDir)) { |
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throw new InvalidCacheDirectoryException(sprintf( |
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'The cache directory "%s" is not writable', |
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$cacheDir |
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)); |
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} |
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$bytes = file_put_contents( |
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$this->cacheFile, |
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serialize($this->cache) |
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); |
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if ($bytes === false) { |
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throw new WriteCacheException('Unable to write cache file: '.$this->cacheFile); |
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} |
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return true; |
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} |
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public function invalidateCacheFile() : void |
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{ |
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if (!$this->cacheEnabled |
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|| empty($this->cacheFile) |
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|| !is_file($this->cacheFile) |
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) { |
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return; |
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} |
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unlink($this->cacheFile); |
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} |
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protected function fetchCache() |
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{ |
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if (!$this->cacheEnabled |
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|| empty($this->cacheFile) |
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|| !is_file($this->cacheFile) |
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) { |
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return []; |
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} |
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$this->cache = unserialize(file_get_contents($this->cacheFile)); |
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if (empty($this->cache)) { |
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throw new InvalidCacheException('Unable to load route cache'); |
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} |
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return $this->cache; |
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} |
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} |
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wshafer /
expressive-symfony-router
