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<?php |
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/** |
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* @package CleverStyle Framework |
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* @author Nazar Mokrynskyi <[email protected]> |
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* @copyright Copyright (c) 2011-2016, Nazar Mokrynskyi |
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* @license MIT License, see license.txt |
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*/ |
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namespace cs; |
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/** |
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* @method static $this instance($check = false) |
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*/ |
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class Storage { |
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use |
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Singleton; |
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const CONNECTIONS_ACTIVE = 0; |
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const CONNECTIONS_SUCCESSFUL = 1; |
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const CONNECTIONS_FAILED = 2; |
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/** |
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* @var array[] |
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*/ |
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protected $connections = [ |
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self::CONNECTIONS_ACTIVE => [], |
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self::CONNECTIONS_SUCCESSFUL => [], |
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self::CONNECTIONS_FAILED => [] |
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]; |
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/** |
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* Get list of connections of specified type |
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* |
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* @param int $type One of constants `self::CONNECTIONS_*` |
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* |
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* @return array For `self::CONNECTIONS_ACTIVE` array of successful connections with corresponding objects as values of array, otherwise array where keys |
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* are storage ids and values are strings with information about storage |
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*/ |
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public function get_connections_list ($type) { |
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return $this->connections[$type]; |
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} |
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/** |
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* Processing of getting storage instance |
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* |
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* @param int $storage_id |
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* |
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* @return Storage\_Abstract|False_class |
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*/ |
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public function storage ($storage_id) { |
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/** |
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* If connection found in list of failed connections - return instance of False_class |
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*/ |
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if (isset($this->connections[self::CONNECTIONS_FAILED][$storage_id])) { |
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return False_class::instance(); |
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} |
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/** |
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* If connection already exists - return reference on the instance of Storage engine object |
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*/ |
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if (isset($this->connections[self::CONNECTIONS_ACTIVE][$storage_id])) { |
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return $this->connections[self::CONNECTIONS_ACTIVE][$storage_id]; |
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} |
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/** |
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* If connection to the local storage |
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*/ |
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if ($storage_id == 0) { |
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$Core = Core::instance(); |
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$storage = [ |
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'connection' => $Core->storage_type, |
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'url' => $Core->storage_url, |
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'host' => $Core->storage_host, |
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'user' => $Core->storage_user, |
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'password' => $Core->storage_password |
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]; |
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} else { |
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$storage = Config::instance()->storage[$storage_id]; |
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} |
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/** |
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* Establish new connection |
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* |
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* @var Storage\_Abstract $connection |
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*/ |
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$engine_class = "\\cs\\Storage\\$storage[connection]"; |
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$connection = new $engine_class( |
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$storage['url'], |
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$storage['host'], |
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$storage['user'], |
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$storage['password'] |
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); |
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$connection_name = "$storage_id/$storage[host]/$storage[connection]"; |
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/** |
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* If successfully - add connection to the list of success connections and return instance of Storage engine object |
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*/ |
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if (is_object($connection) && $connection->connected()) { |
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$this->connections[self::CONNECTIONS_ACTIVE][$storage_id] = $connection; |
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$this->connections[self::CONNECTIONS_SUCCESSFUL][] = $connection_name; |
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return $connection; |
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} |
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/** |
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* If failed - add connection to the list of failed connections and log error |
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*/ |
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$this->connections[self::CONNECTIONS_FAILED][$storage_id] = $connection_name; |
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trigger_error("Error connecting to storage $connection_name", E_USER_WARNING); |
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return False_class::instance(); |
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} |
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} |
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nazar-pc /
CleverStyle-Framework
