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<?php |
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declare(strict_types=1); |
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namespace Doctrine\Common\Cache; |
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use Couchbase\Bucket; |
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use Couchbase\Document; |
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use Couchbase\Exception; |
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use function phpversion; |
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use function serialize; |
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use function sprintf; |
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use function substr; |
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use function time; |
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use function unserialize; |
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use function version_compare; |
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/** |
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* Couchbase ^2.3.0 cache provider. |
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*/ |
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final class CouchbaseBucketCache extends CacheProvider |
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{ |
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private const MINIMUM_VERSION = '2.3.0'; |
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private const KEY_NOT_FOUND = 13; |
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private const MAX_KEY_LENGTH = 250; |
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private const THIRTY_DAYS_IN_SECONDS = 2592000; |
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/** @var Bucket */ |
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private $bucket; |
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public function __construct(Bucket $bucket) |
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{ |
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if (version_compare(phpversion('couchbase'), self::MINIMUM_VERSION) < 0) { |
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// Manager is required to flush cache and pull stats. |
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throw new \RuntimeException(sprintf('ext-couchbase:^%s is required.', self::MINIMUM_VERSION)); |
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} |
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$this->bucket = $bucket; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doFetch($id) |
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{ |
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$id = $this->normalizeKey($id); |
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try { |
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$document = $this->bucket->get($id); |
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} catch (Exception $e) { |
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return false; |
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} |
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if ($document instanceof Document && $document->value !== false) { |
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return unserialize($document->value); |
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} |
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return false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doContains($id) |
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{ |
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$id = $this->normalizeKey($id); |
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try { |
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$document = $this->bucket->get($id); |
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} catch (Exception $e) { |
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return false; |
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} |
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if ($document instanceof Document) { |
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return ! $document->error; |
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} |
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return false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doSave($id, $data, $lifeTime = 0) |
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{ |
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$id = $this->normalizeKey($id); |
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$lifeTime = $this->normalizeExpiry($lifeTime); |
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try { |
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$encoded = serialize($data); |
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$document = $this->bucket->upsert($id, $encoded, [ |
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'expiry' => (int) $lifeTime, |
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]); |
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} catch (Exception $e) { |
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return false; |
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} |
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if ($document instanceof Document) { |
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return ! $document->error; |
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} |
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return false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doDelete($id) |
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{ |
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$id = $this->normalizeKey($id); |
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try { |
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$document = $this->bucket->remove($id); |
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3 |
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} catch (Exception $e) { |
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3 |
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return $e->getCode() === self::KEY_NOT_FOUND; |
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} |
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if ($document instanceof Document) { |
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return ! $document->error; |
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} |
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return false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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2 |
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protected function doFlush() |
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{ |
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$manager = $this->bucket->manager(); |
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// Flush does not return with success or failure, and must be enabled per bucket on the server. |
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// Store a marker item so that we will know if it was successful. |
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$this->doSave(__METHOD__, true, 60); |
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$manager->flush(); |
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if ($this->doContains(__METHOD__)) { |
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$this->doDelete(__METHOD__); |
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return false; |
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} |
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return true; |
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} |
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152
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/** |
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* {@inheritdoc} |
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154
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*/ |
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155
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1 |
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protected function doGetStats() |
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{ |
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$manager = $this->bucket->manager(); |
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$stats = $manager->info(); |
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$nodes = $stats['nodes']; |
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1 |
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$node = $nodes[0]; |
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$interestingStats = $node['interestingStats']; |
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return [ |
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Cache::STATS_HITS => $interestingStats['get_hits'], |
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1 |
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Cache::STATS_MISSES => $interestingStats['cmd_get'] - $interestingStats['get_hits'], |
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Cache::STATS_UPTIME => $node['uptime'], |
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1 |
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Cache::STATS_MEMORY_USAGE => $interestingStats['mem_used'], |
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1 |
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Cache::STATS_MEMORY_AVAILABLE => $node['memoryFree'], |
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]; |
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} |
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76 |
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private function normalizeKey(string $id) : string |
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{ |
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$normalized = substr($id, 0, self::MAX_KEY_LENGTH); |
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if ($normalized === false) { |
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return $id; |
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} |
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76 |
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return $normalized; |
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} |
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183
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/** |
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* Expiry treated as a unix timestamp instead of an offset if expiry is greater than 30 days. |
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* @src https://developer.couchbase.com/documentation/server/4.1/developer-guide/expiry.html |
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*/ |
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74 |
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private function normalizeExpiry(int $expiry) : int |
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{ |
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74 |
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if ($expiry > self::THIRTY_DAYS_IN_SECONDS) { |
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1 |
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return time() + $expiry; |
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} |
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193
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73 |
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return $expiry; |
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} |
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} |
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doctrine /
cache
