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<?php namespace Comodojo\Cache\Components; |
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use \Comodojo\Cache\Providers\ProviderInterface; |
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use \Psr\Log\LoggerInterface; |
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use \Exception; |
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/** |
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* |
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* @package Comodojo Spare Parts |
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* @author Marco Giovinazzi <[email protected]> |
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* @license MIT |
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* |
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* LICENSE: |
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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 |
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* THE SOFTWARE. |
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*/ |
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class StackManager { |
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private $stack = array(); |
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private $weights = array(); |
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private $failures = array(); |
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private $flap_interval = 600; |
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public function __construct($flap_interval) { |
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$this->flap_interval = $flap_interval; |
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} |
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public function getFlapInterval() { |
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return $this->flap_interval; |
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} |
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public function setFlapInterval($ttl) { |
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$this->flap_interval = $ttl; |
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return $this; |
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} |
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public function add(ProviderInterface $provider, $weight = 0) { |
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$id = $provider->getCacheId(); |
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if ( array_key_exists($id, $this->stack) ) throw new CacheException("Provider $id already registered"); |
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$this->stack[$id] = $provider; |
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$this->weights[$id] = $weight; |
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return $id; |
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} |
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View Code Duplication |
public function remove($id) { |
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if ( array_key_exists($id, $this->stack) && array_key_exists($id, $this->weights) ) { |
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unset($this->stack[$id]); |
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unset($this->weights[$id]); |
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if ( array_key_exists($id, $this->failures) ) unset($this->failures[$id]); |
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} else { |
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throw new CacheException("Provider not registered"); |
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} |
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} |
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public function get($id) { |
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if ( array_key_exists($id, $this->stack) && array_key_exists($id, $this->weights) ) { |
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return $this->stack[$id]; |
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} |
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throw new CacheException("Provider not registered"); |
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} |
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public function disable($id) { |
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if ( array_key_exists($id, $this->stack) && array_key_exists($id, $this->weights) ) { |
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$this->stack[$id]->disable(); |
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$this->failures[$id] = time(); |
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} else { |
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throw new CacheException("Provider not registered"); |
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} |
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} |
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View Code Duplication |
public function enable($id) { |
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if ( array_key_exists($id, $this->stack) && array_key_exists($id, $this->weights) ) { |
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$this->stack[$id]->enable(); |
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if ( array_key_exists($id, $this->failures) ) unset($this->failures[$id]); |
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} else { |
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throw new CacheException("Provider not registered"); |
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} |
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} |
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public function getAll($enabled=true) { |
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return $enabled ? $this->getEnabled() : $this->stack; |
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} |
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public function getRandom() { |
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return $this->stack[array_rand($this->getEnabled())]; |
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} |
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View Code Duplication |
public function getFirst() { |
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$providers = $this->getEnabled(); |
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if ( empty($providers) ) return null; |
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reset($providers); |
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return current($providers); |
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} |
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View Code Duplication |
public function getLast() { |
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$providers = $this->getEnabled(); |
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if ( empty($providers) ) return null; |
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reset($providers); |
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return end($providers); |
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} |
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public function getByWeight() { |
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$providers = $this->getEnabled(); |
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$weights = array_intersect_key($this->weights, $providers); |
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asort($weights); |
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end($weights); |
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return $providers[key($weights)]; |
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} |
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private function checkCacheFlap($cache_id, $cache) { |
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if ( $cache->isEnabled() === false && array_key_exists($cache_id, $this->failures) ) { |
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if ( $this->failures[$cache_id] < time() + $this->flap_interval ) { |
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$cache->enable(); |
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unset($this->failures[$cache_id]); |
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} |
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} |
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} |
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private function getEnabled() { |
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$return = array(); |
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foreach ($this->stack as $id => $cache) { |
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$this->checkCacheFlap($id, $cache); |
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if ( $cache->isEnabled() ) $return[$id] = $cache; |
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} |
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return $return; |
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} |
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} |
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comodojo /
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.