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<?php |
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/** |
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* The MIT License (MIT) |
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* |
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* Copyright (c) 2015 Krishnaprasad MG <[email protected]> |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in all |
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* copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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*/ |
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namespace Sunspikes\Ratelimit\Cache; |
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use Psr\Cache\CacheItemPoolInterface; |
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use Psr\Cache\CacheException as PsrCacheException; |
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use Sunspikes\Ratelimit\Cache\Exception\CacheAdapterException; |
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use Sunspikes\Ratelimit\Cache\Exception\ItemNotFoundException; |
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class ThrottlerCache implements ThrottlerCacheInterface |
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{ |
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/** |
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* @var CacheItemPoolInterface |
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*/ |
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private $cacheItemPool; |
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/** |
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* ThrottlerCache constructor. |
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* |
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* @param CacheItemPoolInterface $cacheItemPool |
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*/ |
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public function __construct(CacheItemPoolInterface $cacheItemPool) |
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{ |
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$this->cacheItemPool = $cacheItemPool; |
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} |
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/** |
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* @param string $key |
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* |
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* @return ThrottlerItemInterface |
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*/ |
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public function getItem(string $key): ThrottlerItemInterface |
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{ |
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$item = $this->getThrottlerItem($key); |
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return $item; |
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} |
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/** |
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* @param string $key |
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* |
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* @return bool |
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*/ |
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public function hasItem(string $key): bool |
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{ |
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return $this->cacheItemPool->hasItem($key); |
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} |
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/** |
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* @param string $key |
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* @param mixed $item |
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* @return bool |
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*/ |
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public function setItem(string $key, ThrottlerItemInterface $item): bool |
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{ |
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return $this->setThrottlerItem($key, $item); |
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} |
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/** |
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* @param string $key |
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*/ |
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public function removeItem(string $key) |
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{ |
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$this->cacheItemPool->deleteItem($key); |
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} |
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/** |
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* @param string $key |
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* |
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* @return ThrottlerItemInterface |
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* @throws CacheAdapterException |
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* @throws ItemNotFoundException |
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*/ |
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private function getThrottlerItem(string $key): ThrottlerItemInterface |
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{ |
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try { |
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$item = $this->cacheItemPool->getItem($key); |
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if ($item->isHit()) { |
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$params = json_decode($item->get(), true); |
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$class = $params['class']; |
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return $class::createFromArray($params['data']); |
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} |
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} catch (PsrCacheException $e) { |
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} |
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throw new ItemNotFoundException('Item not found.'); |
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} |
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/** |
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* @param string $key |
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* @param ThrottlerItemInterface $item |
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* |
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* @return bool |
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* @throws CacheAdapterException |
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*/ |
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private function setThrottlerItem(string $key, ThrottlerItemInterface $item) |
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{ |
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try { |
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$cacheItem = $this->cacheItemPool->getItem($key); |
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if ($cacheItem->isHit()) { |
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$this->cacheItemPool->deleteItem($key); |
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} |
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} catch (PsrCacheException $e) { |
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throw new CacheAdapterException($e->getMessage(), $e->getCode(), $e->getPrevious()); |
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} |
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$cacheItem->set( |
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json_encode( |
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[ |
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'class' => get_class($item), |
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'data' => $item, |
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] |
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) |
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); |
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$cacheItem->expiresAfter($item->getTtl()); |
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return $this->cacheItemPool->save($cacheItem); |
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} |
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} |
sunspikes /
php-ratelimiter
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