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<?php |
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/* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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* This software consists of voluntary contributions made by many individuals |
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* and is licensed under the MIT license. |
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*/ |
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declare(strict_types=1); |
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namespace PSR7Session\Storageless\Session; |
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final class LazySession implements SessionInterface |
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{ |
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/** |
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* @internal do not access directly: use {@see LazySession::getRealSession} instead |
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* |
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* @var SessionInterface|null |
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*/ |
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private $realSession; |
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/** |
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* @var callable |
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*/ |
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private $sessionLoader; |
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/** |
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* Instantiation via __construct is not allowed, use {@see LazySession::fromContainerBuildingCallback} instead |
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*/ |
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private function __construct() |
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{ |
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} |
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/** |
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* @param callable $sessionLoader |
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* |
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* @return self |
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*/ |
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public static function fromContainerBuildingCallback(callable $sessionLoader) : self |
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{ |
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$instance = new self(); |
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$instance->sessionLoader = $sessionLoader; |
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return $instance; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function set(string $key, $value) |
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{ |
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$this->getRealSession()->set($key, $value); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function get(string $key, $default = null) |
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{ |
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return $this->getRealSession()->get($key, $default); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function remove(string $key) |
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{ |
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$this->getRealSession()->remove($key); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function clear() |
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{ |
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$this->getRealSession()->clear(); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function has(string $key): bool |
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{ |
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return $this->getRealSession()->has($key); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function hasChanged() : bool |
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{ |
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return $this->realSession && $this->realSession->hasChanged(); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function isEmpty() : bool |
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{ |
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return $this->getRealSession()->isEmpty(); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function jsonSerialize() |
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{ |
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return $this->getRealSession()->jsonSerialize(); |
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} |
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/** |
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* Get or initialize the session |
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* |
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* @return SessionInterface |
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*/ |
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private function getRealSession() : SessionInterface |
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{ |
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return $this->realSession ?? $this->realSession = $this->loadSession(); |
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} |
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/** |
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* Type-safe wrapper that ensures that the given callback returns the expected type of object, when called |
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* |
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* @return SessionInterface |
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*/ |
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private function loadSession() : SessionInterface |
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{ |
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$sessionLoader = $this->sessionLoader; |
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return $sessionLoader(); |
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} |
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} |
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psr7-sessions /
storageless
