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<?php |
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namespace Magium\Configuration\Manager; |
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use Magium\Configuration\Config\Builder; |
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use Magium\Configuration\Config\BuilderInterface; |
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use Magium\Configuration\Config\Config; |
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use Zend\Cache\Storage\StorageInterface; |
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class Manager implements ManagerInterface |
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{ |
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protected $config = []; |
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protected $cache; |
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protected $localCache; |
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protected $builder; |
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protected $configurationLocation; |
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protected $hashAlgo; |
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public function __construct( |
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StorageInterface $cache = null, |
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BuilderInterface $builder = null, |
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StorageInterface $localCache = null, |
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$hashAlgo = 'sha1' |
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) |
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{ |
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$this->cache = $cache; |
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$this->builder = $builder; |
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$this->localCache = $localCache; |
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$this->hashAlgo = $hashAlgo; |
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} |
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public function getBuilder() |
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{ |
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return $this->builder; |
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} |
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public function setLocalCache(StorageInterface $storage) |
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{ |
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$this->localCache = $storage; |
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} |
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public function setRemoteCache(StorageInterface $storage) |
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{ |
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$this->cache = $storage; |
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} |
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public function setBuilder(BuilderInterface $builder) |
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{ |
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$this->builder = $builder; |
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} |
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public function getContextCacheKey($context = Config::CONTEXT_DEFAULT) |
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{ |
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return strtoupper('current_cache_object_' . $context); |
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} |
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/** |
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* @param string $context The (configurable) context for the needed configuration object |
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* @return Config |
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* @throws NoConfigurationException |
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*/ |
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public function getConfiguration($context = Config::CONTEXT_DEFAULT, $storeScopeLocally = false) |
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{ |
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$key = $this->getContextCacheKey($context); |
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if (isset($this->config[$key]) && $this->config[$key] instanceof Config) { |
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return $this->config[$key]; |
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} |
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// By default we will get the config location from the remote server for each request. But we can override that. |
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if ($this->localCache instanceof StorageInterface && $storeScopeLocally) { |
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// If a local cache is defined we check there for the current scope key first |
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$currentConfigItem = $this->localCache->getItem($key); |
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// if we don't find the scope key we check the global cache |
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if (!$currentConfigItem) { |
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$currentConfigItem = $this->cache->getItem($key); |
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// If the primary cache gives us a value we store it locally |
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if ($currentConfigItem) { |
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$this->localCache->setItem($key, $currentConfigItem); |
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} |
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} |
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} else { |
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// Local cache is not configured, so we get the current config cache key from the global cache. |
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$currentConfigItem = $this->cache->getItem($key); |
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} |
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$config = null; |
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if ($this->localCache instanceof StorageInterface) { |
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// First we check the local cache for the configuration object if it exists. |
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$config = $this->localCache->getItem($currentConfigItem); |
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} |
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// Either way, if the config is null we check the global cache |
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if ($config === null) { |
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$config = $this->cache->getItem($currentConfigItem); |
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if ($config !== null) { |
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if ($this->localCache instanceof StorageInterface) { |
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$this->localCache->setItem($currentConfigItem, $config); |
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} |
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} |
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} |
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if ($config) { |
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$config = new Config($config); |
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$this->config[$key] = $config; |
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return $this->config[$key]; |
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} |
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$config = $this->builder->build($context); |
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$this->storeConfigurationObject($config, $context); |
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$this->config[$key] = $config; |
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return $config; |
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} |
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public function storeConfigurationObject(Config $config, $context = Config::CONTEXT_DEFAULT) |
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{ |
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$contextCacheKey = $this->getContextCacheKey($context); |
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$previousConfigKey = $this->cache->getItem($contextCacheKey); |
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$xml = $config->asXML(); |
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$configKey = hash_hmac($this->hashAlgo, $xml, ''); |
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$this->cache->addItem($configKey, $xml); |
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$this->cache->setItem($contextCacheKey, $xml); |
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if ($previousConfigKey) { |
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$this->cache->removeItem($previousConfigKey); |
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} |
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} |
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} |
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magium /
configuration-manager
