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<?php |
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declare(strict_types=1); |
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namespace WShafer\PSR11PhpCache\Adapter; |
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use Cache\Adapter\Memcached\MemcachedCachePool; |
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use Memcached; |
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use Psr\Container\ContainerInterface; |
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use WShafer\PSR11PhpCache\Exception\InvalidConfigException; |
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use WShafer\PSR11PhpCache\Exception\MissingExtensionException; |
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class MemcachedAdapterFactory implements FactoryInterface |
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{ |
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/** @var \Memcached */ |
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protected $cache; |
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/** |
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* MemcachedAdapterFactory constructor. |
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* |
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* @codeCoverageIgnore |
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*/ |
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public function __construct() |
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{ |
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if (!extension_loaded('memcached')) { |
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throw new MissingExtensionException( |
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'Memcached extension not installed.' |
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); |
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} |
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} |
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/** |
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* @param ContainerInterface $container |
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* @param array $options |
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* |
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* @return MemcachedCachePool |
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*/ |
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public function __invoke(ContainerInterface $container, array $options): MemcachedCachePool |
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{ |
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$this->cache = $this->getMemcachedInstance($container, $options); |
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return new MemcachedCachePool($this->cache); |
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} |
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/** |
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* Added for testing |
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* |
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* @return \Memcached |
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*/ |
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public function getCache(): \Memcached |
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{ |
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return $this->cache; |
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} |
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protected function getMemcachedInstance(ContainerInterface $container, array $options) |
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{ |
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if ( |
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empty($options['service']) |
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&& empty($options['servers']) |
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) { |
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throw new InvalidConfigException( |
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'You must provide either a container service or at least one server to use' |
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); |
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} |
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if (!empty($options['service'])) { |
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return $this->getInstanceFromContainer($container, $options['service']); |
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} |
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return $this->getInstanceFromConfig($options); |
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} |
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protected function getInstanceFromContainer(ContainerInterface $container, $name) |
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{ |
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return $container->get($name); |
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} |
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protected function getInstanceFromConfig(array $options): Memcached |
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{ |
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$persistentId = $options['persistentId'] ?? null; |
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$servers = $options['servers'] ?? []; |
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$memcachedOptions = $options['memcachedOptions'] ?? []; |
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$instance = new Memcached($persistentId); |
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foreach ($servers as $server) { |
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$this->addServer($instance, $server); |
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} |
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foreach ($memcachedOptions as $key => $value) { |
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$instance->setOption($key, $value); |
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} |
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return $instance; |
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} |
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protected function addServer(Memcached $instance, $server): void |
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{ |
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$serverList = $instance->getServerList(); |
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$host = $server['host'] ?? null; |
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$port = $server['port'] ?? 11211; |
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$weight = $server['weight'] ?? 0; |
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if (empty($host)) { |
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throw new InvalidConfigException( |
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"Invalid host provided for Memcached server" |
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); |
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} |
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foreach ($serverList as $addedServer) { |
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if ( |
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$addedServer['host'] === $host |
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&& $addedServer['port'] === $port |
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) { |
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// Server already added skipping |
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return; |
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} |
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} |
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$instance->addServer($host, $port, $weight); |
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} |
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} |
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wshafer /
psr11-phpcache
