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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 Singleton; |
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/** |
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* @var Storage\_Abstract[]|False_class[] |
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*/ |
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protected $connections = []; |
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protected $successful_connections = []; |
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protected $failed_connections = []; |
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/** |
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* Get list of connections of specified type |
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* |
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* @param bool|null|string $status `null` - returns array of connections with objects<br> |
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* `true|1` - returns array of names of successful connections<br> |
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* `false|0` - returns array of names of failed connections |
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* |
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* @return array|null |
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*/ |
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function get_connections_list ($status = null) { |
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if ($status === null) { |
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return $this->connections; |
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} elseif ($status == 0) { |
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return $this->failed_connections; |
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} elseif ($status == 1) { |
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return $this->successful_connections; |
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} |
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return null; |
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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 $connection |
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* |
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* @return Storage\_Abstract|False_class |
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*/ |
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function storage ($connection) { |
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if (!is_int($connection) && $connection != '0') { |
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return False_class::instance(); |
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} |
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return $this->connecting($connection); |
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} |
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/** |
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* Processing of all storage requests |
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* |
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* @param int $connection |
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* |
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* @return Storage\_Abstract|False_class |
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*/ |
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protected function connecting ($connection) { |
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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($this->failed_connections[$connection])) { |
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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($this->connections[$connection])) { |
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return $this->connections[$connection]; |
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} |
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$Config = Config::instance(); |
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/** |
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* If connection to the local storage |
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*/ |
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if ($connection == 0) { |
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$Core = Core::instance(); |
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$storage['connection'] = $Core->storage_type; |
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$storage['url'] = $Core->storage_url; |
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$storage['host'] = $Core->storage_host; |
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$storage['user'] = $Core->storage_user; |
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$storage['password'] = $Core->storage_password; |
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} elseif (isset($Config->storage[$connection])) { |
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$storage = &$Config->storage[$connection]; |
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} else { |
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return False_class::instance(); |
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} |
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/** |
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* Create new Storage connection |
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*/ |
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$engine_class = "\\cs\\Storage\\$storage[connection]"; |
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$this->connections[$connection] = new $engine_class($storage['url'], $storage['host'], $storage['user'], $storage['password']); |
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/** |
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* If successfully - add connection to the list of success connections and return instance of DB engine object |
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*/ |
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if (is_object($this->connections[$connection]) && $this->connections[$connection]->connected()) { |
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$this->successful_connections[] = "$connection/$storage[host]/$storage[connection]"; |
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unset($storage); |
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$this->$connection = $this->connections[$connection]; |
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return $this->connections[$connection]; |
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/** |
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* If failed - add connection to the list of failed connections and display connection error |
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*/ |
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} else { |
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unset($this->$connection); |
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$this->failed_connections[$connection] = "$connection/$storage[host]/$storage[connection]"; |
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unset($storage); |
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trigger_error('Error connecting to storage '.$this->failed_connections[$connection], E_USER_WARNING); |
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$return = False_class::instance(); |
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$return->error = 'Connection failed'; |
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return $return; |
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} |
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} |
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} |
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nazar-pc /
CleverStyle-Framework
