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<?php |
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namespace Cmp\Cache\Backend; |
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use Cmp\Cache\Cache; |
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use Cmp\Cache\Exceptions\NotFoundException; |
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use Cmp\Cache\TimeToLiveAwareCache; |
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use Cmp\Cache\Traits\MultiCacheTrait; |
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/** |
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* Class ArrayCache |
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* |
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* A simple backend powered by an array in memory |
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* |
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* @package Cmp\Cache\Infrastureture\Backend |
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*/ |
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class ChainCache implements Cache |
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{ |
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use MultiCacheTrait; |
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/** |
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* Stored items |
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* |
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* @var Cache[] |
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*/ |
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private $cache = []; |
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/** |
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* Pushes a cache in the chain |
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* |
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* @param Cache $cache |
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* |
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* @return $this |
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*/ |
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public function pushCache(Cache $cache) |
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{ |
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$this->cache[] = $cache; |
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return $this; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function set($key, $item, $timeToLive = null) |
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{ |
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$success = true; |
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foreach ($this->cache as $cache) { |
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$success = $success && $cache->set($key, $item, $timeToLive); |
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} |
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return $success; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function has($key) |
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{ |
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foreach ($this->cache as $cache) { |
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if ($cache->has($key)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function get($key, $default = null) |
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{ |
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foreach ($this->cache as $index => $cache) { |
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$item = $cache->get($key); |
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if ($item) { |
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$this->populatePreviousCaches($index, $key, $item, $cache->getTimeToLive($key)); |
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return $item; |
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} |
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} |
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return $default; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function demand($key) |
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{ |
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$item = $this->get($key); |
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if (!$item) { |
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throw new NotFoundException($key); |
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} |
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return $item; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function delete($key) |
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{ |
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$success = true; |
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foreach ($this->cache as $cache) { |
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$success = $success && $cache->delete($key); |
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} |
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return $success; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function flush() |
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{ |
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$success = true; |
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foreach ($this->cache as $cache) { |
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$success = $success && $cache->flush(); |
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} |
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return $success; |
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} |
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/** |
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* Gets the remaining time to live for an item |
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* |
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* @param $key |
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* |
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* @return int|null |
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*/ |
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public function getTimeToLive($key) |
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{ |
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foreach ($this->cache as $cache) { |
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$timeToLive = $cache->getTimeToLive($key); |
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if ($timeToLive) { |
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return $timeToLive; |
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} |
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} |
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return null; |
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} |
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/** |
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* @param string $index |
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* @param string $key |
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* @param string $item |
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* @param int|null $timeToLive |
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*/ |
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1 |
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private function populatePreviousCaches($index, $key, $item, $timeToLive) |
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{ |
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1 |
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for (--$index; $index >= 0 ; $index--) { |
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$this->cache[$index]->set($key, $item, $timeToLive); |
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} |
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} |
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} |
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CMProductions /
cache
Loading history...
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.