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<?php |
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namespace Ackintosh\Ganesha; |
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use Ackintosh\Ganesha\Exception\StorageException; |
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use Ackintosh\Ganesha\Storage\Adapter\TumblingTimeWindowInterface; |
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use Ackintosh\Ganesha\Storage\Adapter\SlidingTimeWindowInterface; |
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use Ackintosh\Ganesha\Storage\AdapterInterface; |
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class Storage |
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{ |
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/** |
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* @var Storage\AdapterInterface |
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*/ |
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private $adapter; |
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/** |
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* @var callable |
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*/ |
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private $serviceNameDecorator; |
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/** |
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* @var string |
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*/ |
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const KEY_PREFIX = 'ganesha_'; |
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/** |
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* @var string |
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*/ |
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const KEY_SUFFIX_SUCCESS = '_success'; |
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/** |
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* @var string |
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*/ |
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const KEY_SUFFIX_FAILURE = '_failure'; |
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/** |
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* @var string |
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*/ |
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const KEY_SUFFIX_REJECTION = '_rejection'; |
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/** |
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* @var string |
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*/ |
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const KEY_SUFFIX_LAST_FAILURE_TIME = '_last_failure_time'; |
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/** |
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* @var string |
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*/ |
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const KEY_SUFFIX_STATUS = '_status'; |
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/** |
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* Storage constructor. |
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* |
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* @param AdapterInterface $adapter |
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* @param callable $serviceNameDecorator |
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*/ |
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public function __construct(AdapterInterface $adapter, $serviceNameDecorator) |
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{ |
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$this->adapter = $adapter; |
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$this->serviceNameDecorator = $serviceNameDecorator; |
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} |
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/** |
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* returns count |
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* |
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* @param string $key |
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* @return int |
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* @throws StorageException |
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*/ |
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private function getCount($key) |
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{ |
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return $this->adapter->load($key); |
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} |
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/** |
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* returns success count |
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* |
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* @param string $key |
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* @return int |
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* @throws StorageException |
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*/ |
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public function getSuccessCountByCustomKey($key) |
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{ |
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return $this->getCount($this->prefix($key) . self::KEY_SUFFIX_SUCCESS); |
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} |
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/** |
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* returns failure count |
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* |
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* @param string $key |
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* @return int |
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* @throws StorageException |
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*/ |
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public function getFailureCountByCustomKey($key) |
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{ |
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return $this->getCount($this->prefix($key) . self::KEY_SUFFIX_FAILURE); |
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} |
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/** |
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* returns rejection count |
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* |
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* @param string $key |
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* @return int |
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* @throws StorageException |
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*/ |
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public function getRejectionCountByCustomKey($key) |
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{ |
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return $this->getCount($this->prefix($key) . self::KEY_SUFFIX_REJECTION); |
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} |
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/** |
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* returns failure count |
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* |
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* @param string $service |
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* @return int |
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* @throws StorageException |
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*/ |
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public function getFailureCount($service) |
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{ |
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return $this->getCount($this->failureKey($service)); |
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} |
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/** |
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* returns success count |
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* |
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* @param string $service |
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* @return int |
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* @throws StorageException |
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*/ |
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public function getSuccessCount($service) |
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{ |
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return $this->getCount($this->successKey($service)); |
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} |
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/** |
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* increments failure count |
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* |
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* @param string $service |
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* @return void |
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* @throws StorageException |
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*/ |
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public function incrementFailureCount($service) |
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{ |
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$this->adapter->increment($this->failureKey($service)); |
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} |
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/** |
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* decrements failure count |
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* |
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* @param string $service |
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* @return void |
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* @throws StorageException |
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*/ |
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public function decrementFailureCount($service) |
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{ |
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$this->adapter->decrement($this->failureKey($service)); |
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} |
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/** |
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* increments success count |
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* |
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* @param string $service |
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* @return void |
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* @throws StorageException |
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*/ |
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public function incrementSuccessCount($service) |
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{ |
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$this->adapter->increment($this->successKey($service)); |
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} |
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/** |
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* returns rejection count |
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* |
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* @param string $service |
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* @return int |
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* @throws StorageException |
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*/ |
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public function getRejectionCount($service) |
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{ |
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return $this->getCount($this->rejectionKey($service)); |
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} |
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/** |
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* increments rejection count |
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* |
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* @param string $service |
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* @return void |
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* @throws StorageException |
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*/ |
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public function incrementRejectionCount($service) |
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{ |
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$this->adapter->increment($this->rejectionKey($service)); |
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} |
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/** |
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* sets failure count |
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* |
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* @param $service |
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* @param $failureCount |
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* @throws StorageException |
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*/ |
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public function setFailureCount($service, $failureCount) |
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{ |
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$this->adapter->save($this->failureKey($service), $failureCount); |
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} |
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/** |
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* sets last failure time |
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* |
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* @param string $service |
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* @param int $lastFailureTime |
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* @return void |
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* @throws StorageException |
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*/ |
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public function setLastFailureTime($service, $lastFailureTime) |
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{ |
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$this->adapter->saveLastFailureTime($this->lastFailureKey($service), $lastFailureTime); |
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} |
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/** |
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* returns last failure time |
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* |
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* @param string $service |
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* @return int | null |
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* @throws StorageException |
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*/ |
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public function getLastFailureTime($service) |
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{ |
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return $this->adapter->loadLastFailureTime($this->lastFailureKey($service)); |
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} |
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/** |
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* sets status |
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* |
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* @param string $service |
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* @param int $status |
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* @return void |
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* @throws StorageException |
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*/ |
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public function setStatus($service, $status) |
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{ |
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$this->adapter->saveStatus($this->statusKey($service), $status); |
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} |
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/** |
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* returns status |
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* |
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* @param string $service |
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* @return int |
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* @throws StorageException |
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*/ |
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public function getStatus($service) |
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{ |
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return $this->adapter->loadStatus($this->statusKey($service)); |
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} |
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/** |
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* @return void |
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*/ |
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public function reset() |
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{ |
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$this->adapter->reset(); |
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} |
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/** |
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* @return bool |
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*/ |
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public function supportTumblingTimeWindow() |
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{ |
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return $this->adapter instanceof TumblingTimeWindowInterface; |
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} |
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/** |
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* @return bool |
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*/ |
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public function supportSlidingTimeWindow() |
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{ |
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return $this->adapter instanceof SlidingTimeWindowInterface; |
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} |
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/** |
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* @param string $service |
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* @return string |
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*/ |
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private function key($service) |
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{ |
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if ($this->serviceNameDecorator) { |
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$service = call_user_func($this->serviceNameDecorator, $service); |
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} |
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return $this->prefix($service); |
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} |
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/** |
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* @param string $key |
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* @return string |
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*/ |
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private function prefix($key) |
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{ |
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return self::KEY_PREFIX . $key; |
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} |
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/** |
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* @param string $service |
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* @return string |
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*/ |
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private function successKey($service) |
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{ |
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return $this->key($service) . self::KEY_SUFFIX_SUCCESS; |
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} |
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/** |
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* @param string $service |
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* @return string |
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*/ |
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private function failureKey($service) |
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{ |
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return $this->key($service) . self::KEY_SUFFIX_FAILURE; |
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} |
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/** |
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* @param string $service |
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* @return string |
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*/ |
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private function rejectionKey($service) |
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{ |
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return $this->key($service) . self::KEY_SUFFIX_REJECTION; |
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} |
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/** |
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* @param string $service |
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* @return string |
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*/ |
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private function lastFailureKey($service) |
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{ |
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return $this->supportSlidingTimeWindow() |
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// If the adapter supports SlidingTimeWindow use failureKey() instead, |
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// because Redis doesn't save lastFailureTime. |
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// @see Ackintosh\Ganesha\Storage\Adapter\Redis#saveLastFailureTime() |
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? $this->failureKey($service) |
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: $this->prefix($service) . self::KEY_SUFFIX_LAST_FAILURE_TIME; |
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} |
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/** |
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* @param string $service |
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* @return string |
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*/ |
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private function statusKey($service) |
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{ |
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return $this->prefix($service) . self::KEY_SUFFIX_STATUS; |
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} |
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} |
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