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<?php |
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namespace League\Flysystem\Cached\Storage; |
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use League\Flysystem\AdapterInterface; |
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use League\Flysystem\Config; |
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class Adapter extends AbstractCache |
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{ |
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/** |
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* @var AdapterInterface An adapter |
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*/ |
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protected $adapter; |
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/** |
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* @var string the file to cache to |
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*/ |
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protected $file; |
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/** |
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* @var int|null seconds until cache expiration |
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*/ |
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protected $expire = null; |
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/** |
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* Constructor. |
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* |
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* @param AdapterInterface $adapter adapter |
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* @param string $file the file to cache to |
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* @param int|null $expire seconds until cache expiration |
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*/ |
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public function __construct(AdapterInterface $adapter, $file, $expire = null) |
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{ |
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$this->adapter = $adapter; |
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$this->file = $file; |
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$this->setExpire($expire); |
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} |
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/** |
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* Set the expiration time in seconds. |
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* |
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* @param int $expire relative expiration time |
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*/ |
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protected function setExpire($expire) |
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{ |
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if ($expire) { |
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$this->expire = $this->getTime($expire); |
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} |
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} |
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/** |
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* Get expiration time in seconds. |
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* |
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* @param int $time relative expiration time |
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* |
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* @return int actual expiration time |
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*/ |
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protected function getTime($time = 0) |
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{ |
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return intval(microtime(true)) + $time; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function setFromStorage($json) |
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{ |
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list($cache, $complete, $expire) = json_decode($json, true); |
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if (! $expire || $expire > $this->getTime()) { |
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$this->cache = is_array($cache) ? $cache : []; |
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$this->complete = is_array($complete) ? $complete : []; |
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} else { |
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$this->adapter->delete($this->file); |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function load() |
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{ |
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if ($this->adapter->has($this->file)) { |
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$file = $this->adapter->read($this->file); |
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if ($file && !empty($file['contents'])) { |
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$this->setFromStorage($file['contents']); |
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} |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getForStorage() |
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{ |
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$cleaned = $this->cleanContents($this->cache); |
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return json_encode([$cleaned, $this->complete, $this->expire]); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function save() |
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{ |
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$config = new Config(); |
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$contents = $this->getForStorage(); |
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if ($this->adapter->has($this->file)) { |
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$this->adapter->update($this->file, $contents, $config); |
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} else { |
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$this->adapter->write($this->file, $contents, $config); |
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} |
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} |
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} |
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thephpleague /
flysystem-cached-adapter
