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<?php |
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namespace BlueCache; |
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use Psr\Cache\CacheItemInterface; |
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class CacheItem implements CacheItemInterface |
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{ |
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const ALLOWED_KEY_CHARS = '#^[\w_-]+$#'; |
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/** |
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* @var string |
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*/ |
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protected $key; |
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/** |
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* @var mixed |
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*/ |
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protected $data; |
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/** |
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* @var int |
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*/ |
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protected $expire; |
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/** |
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* @var array |
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*/ |
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protected $config = [ |
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'expire' => 86400, |
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]; |
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/** |
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* CacheItem constructor. |
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* |
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* @param string $key |
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* @param array $config |
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* @throws \BlueCache\CacheException |
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*/ |
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public function __construct($key, array $config = []) |
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{ |
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if ($this->isKeyInvalid($key)) { |
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throw new CacheException('Invalid key. Should us only chars, numbers and _. Use: ' . $key); |
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} |
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$this->key = $key; |
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$this->config = array_merge($this->config, $config); |
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} |
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/** |
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* @param string $key |
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* @return bool |
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*/ |
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protected function isKeyInvalid($key) |
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{ |
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return !preg_match(self::ALLOWED_KEY_CHARS, $key); |
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} |
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/** |
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* @return string |
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*/ |
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public function getKey() |
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{ |
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return $this->key; |
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} |
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/** |
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* @return mixed|null |
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*/ |
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public function get() |
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{ |
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return $this->isHit() ? $this->data : null; |
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} |
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/** |
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* check that cashed data exists |
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* |
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* @return bool |
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*/ |
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public function isHit() |
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{ |
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if (is_null($this->data)) { |
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return false; |
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} |
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if (is_null($this->expire)) { |
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return true; |
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} |
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return !($this->expire <= time()); |
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} |
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/** |
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* @param mixed $value |
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* @return $this |
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*/ |
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public function set($value) |
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{ |
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$this->data = $value; |
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$this->expire = null; |
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return $this; |
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} |
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/** |
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* @param \DateTimeInterface|null $expiration |
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* @return $this |
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* @throws \BlueCache\CacheException |
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*/ |
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public function expiresAt($expiration = null) |
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{ |
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return $this->setExpiration($expiration); |
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} |
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/** |
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* @param \DateTimeInterface|null|int $expire |
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* @return $this |
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* @throws \BlueCache\CacheException |
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*/ |
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protected function setExpiration($expire) |
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{ |
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switch (true) { |
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case is_null($expire): |
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$this->expire = $this->config['expire'] + time(); |
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1 |
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break; |
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5 |
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case is_int($expire): |
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$this->expire = time() + $expire; |
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break; |
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case $expire instanceof \DateTimeInterface: |
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$this->expire = $expire->getTimestamp(); |
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break; |
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case $expire instanceof \DateInterval: |
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$this->expire = (new \DateTime) |
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->add($expire) |
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->getTimestamp(); |
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break; |
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1 |
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default: |
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throw new CacheException('Invalid expire type.'); |
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1 |
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} |
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5 |
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return $this; |
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} |
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147
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148
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/** |
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149
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* @param \DateInterval|int|null $time |
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150
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* @return $this |
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151
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* @throws \BlueCache\CacheException |
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152
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*/ |
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5 |
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public function expiresAfter($time = null) |
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154
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{ |
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5 |
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return $this->setExpiration($time); |
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156
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} |
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157
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} |
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bluetree-service /
cache
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