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<?php |
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namespace hamburgscleanest\GuzzleAdvancedThrottle; |
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use GuzzleHttp\Promise\PromiseInterface; |
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use hamburgscleanest\GuzzleAdvancedThrottle\Cache\Adapters\ArrayAdapter; |
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use hamburgscleanest\GuzzleAdvancedThrottle\Cache\Adapters\LaravelAdapter; |
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use hamburgscleanest\GuzzleAdvancedThrottle\Cache\Interfaces\CacheStrategy; |
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use hamburgscleanest\GuzzleAdvancedThrottle\Cache\Interfaces\StorageInterface; |
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use hamburgscleanest\GuzzleAdvancedThrottle\Cache\Strategies\Cache; |
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use hamburgscleanest\GuzzleAdvancedThrottle\Cache\Strategies\ForceCache; |
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use hamburgscleanest\GuzzleAdvancedThrottle\Cache\Strategies\NoCache; |
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use hamburgscleanest\GuzzleAdvancedThrottle\Exceptions\HostNotDefinedException; |
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use hamburgscleanest\GuzzleAdvancedThrottle\Exceptions\UnknownCacheStrategyException; |
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use hamburgscleanest\GuzzleAdvancedThrottle\Exceptions\UnknownStorageAdapterException; |
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use hamburgscleanest\GuzzleAdvancedThrottle\Helpers\InterfaceHelper; |
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use Illuminate\Config\Repository; |
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use Psr\Http\Message\RequestInterface; |
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/** |
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* Class RequestLimitRuleset |
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* @package hamburgscleanest\GuzzleAdvancedThrottle |
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*/ |
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class RequestLimitRuleset |
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{ |
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/** @var array */ |
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private const STORAGE_MAP = [ |
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'array' => ArrayAdapter::class, |
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'laravel' => LaravelAdapter::class |
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]; |
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/** @var array */ |
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private const CACHE_STRATEGIES = [ |
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'no-cache' => NoCache::class, |
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'cache' => Cache::class, |
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'force-cache' => ForceCache::class |
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]; |
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/** @var array */ |
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private $_rules; |
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/** @var StorageInterface */ |
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private $_storage; |
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/** @var CacheStrategy */ |
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private $_cacheStrategy; |
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/** @var Repository */ |
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private $_config; |
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/** |
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* RequestLimitRuleset constructor. |
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* @param array $rules |
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* @param string $cacheStrategy |
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* @param string|null $storageAdapter |
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* @param Repository|null $config |
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* @throws \hamburgscleanest\GuzzleAdvancedThrottle\Exceptions\UnknownCacheStrategyException |
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* @throws \hamburgscleanest\GuzzleAdvancedThrottle\Exceptions\UnknownStorageAdapterException |
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*/ |
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public function __construct(array $rules, string $cacheStrategy = 'no-cache', string $storageAdapter = 'array', Repository $config = null) |
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{ |
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$this->_rules = $rules; |
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$this->_config = $config; |
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$this->_setStorageAdapter($storageAdapter); |
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$this->_setCacheStrategy($cacheStrategy); |
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} |
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/** |
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* Sets internal storage adapter for this rule set. |
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* @param string $adapterName |
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* @throws \hamburgscleanest\GuzzleAdvancedThrottle\Exceptions\UnknownStorageAdapterException |
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*/ |
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private function _setStorageAdapter(string $adapterName) : void |
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{ |
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$adapterClassName = self::STORAGE_MAP[$adapterName] ?? $adapterName; |
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if (!InterfaceHelper::implementsInterface($adapterClassName, StorageInterface::class)) |
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{ |
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throw new UnknownStorageAdapterException($adapterClassName, \array_values(self::STORAGE_MAP)); |
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} |
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$this->_storage = new $adapterClassName($this->_config); |
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} |
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/** |
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* Sets the caching strategy for this rule set. |
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* @param string $cacheStrategy |
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* @throws \hamburgscleanest\GuzzleAdvancedThrottle\Exceptions\UnknownCacheStrategyException |
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*/ |
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private function _setCacheStrategy(string $cacheStrategy) : void |
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{ |
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$cacheStrategyClassName = self::CACHE_STRATEGIES[$cacheStrategy] ?? $cacheStrategy; |
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if (!InterfaceHelper::implementsInterface($cacheStrategyClassName, CacheStrategy::class)) |
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{ |
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throw new UnknownCacheStrategyException($cacheStrategyClassName, \array_values(self::CACHE_STRATEGIES)); |
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} |
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$this->_cacheStrategy = new $cacheStrategyClassName($this->_storage); |
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} |
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/** |
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* @param array $rules |
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* @param string $cacheStrategy |
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* @param string $storageAdapter |
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* @return static |
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* @throws \hamburgscleanest\GuzzleAdvancedThrottle\Exceptions\UnknownStorageAdapterException |
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* @throws \hamburgscleanest\GuzzleAdvancedThrottle\Exceptions\UnknownCacheStrategyException |
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*/ |
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public static function create(array $rules, string $cacheStrategy = 'no-cache', string $storageAdapter = 'array') |
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{ |
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return new static($rules, $cacheStrategy, $storageAdapter); |
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} |
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/** |
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* @param RequestInterface $request |
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* @param callable $handler |
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* @return PromiseInterface |
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*/ |
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public function cache(RequestInterface $request, callable $handler) : PromiseInterface |
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{ |
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return $this->_cacheStrategy->request($request, $handler); |
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} |
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/** |
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* @return RequestLimitGroup |
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* @throws \Exception |
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* @throws HostNotDefinedException |
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*/ |
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public function getRequestLimitGroup() : RequestLimitGroup |
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{ |
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$requestLimitGroup = new RequestLimitGroup(); |
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foreach ($this->_rules as $host => $rules) |
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{ |
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if (!\is_string($host)) |
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{ |
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throw new HostNotDefinedException(); |
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} |
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$requestLimitGroup->addRules($host, $rules, $this->_storage); |
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} |
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return $requestLimitGroup; |
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} |
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} |