1: <?php
  2: /**
  3:  * CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
  4:  * Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
  5:  *
  6:  * Licensed under The MIT License
  7:  * For full copyright and license information, please see the LICENSE.txt
  8:  * Redistributions of files must retain the above copyright notice.
  9:  *
 10:  * @copyright     Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
 11:  * @link          https://cakephp.org CakePHP(tm) Project
 12:  * @since         2.2.0
 13:  * @license       https://opensource.org/licenses/mit-license.php MIT License
 14:  */
 15: namespace Cake\Log;
 16: 
 17: use Cake\Core\App;
 18: use Cake\Core\ObjectRegistry;
 19: use Psr\Log\LoggerInterface;
 20: use RuntimeException;
 21: 
 22: /**
 23:  * Registry of loaded log engines
 24:  */
 25: class LogEngineRegistry extends ObjectRegistry
 26: {
 27:     /**
 28:      * Resolve a logger classname.
 29:      *
 30:      * Part of the template method for Cake\Core\ObjectRegistry::load()
 31:      *
 32:      * @param string $class Partial classname to resolve.
 33:      * @return string|false Either the correct classname or false.
 34:      */
 35:     protected function _resolveClassName($class)
 36:     {
 37:         if (is_object($class)) {
 38:             return $class;
 39:         }
 40: 
 41:         return App::className($class, 'Log/Engine', 'Log');
 42:     }
 43: 
 44:     /**
 45:      * Throws an exception when a logger is missing.
 46:      *
 47:      * Part of the template method for Cake\Core\ObjectRegistry::load()
 48:      *
 49:      * @param string $class The classname that is missing.
 50:      * @param string $plugin The plugin the logger is missing in.
 51:      * @return void
 52:      * @throws \RuntimeException
 53:      */
 54:     protected function _throwMissingClassError($class, $plugin)
 55:     {
 56:         throw new RuntimeException(sprintf('Could not load class %s', $class));
 57:     }
 58: 
 59:     /**
 60:      * Create the logger instance.
 61:      *
 62:      * Part of the template method for Cake\Core\ObjectRegistry::load()
 63:      *
 64:      * @param string|\Psr\Log\LoggerInterface $class The classname or object to make.
 65:      * @param string $alias The alias of the object.
 66:      * @param array $settings An array of settings to use for the logger.
 67:      * @return \Psr\Log\LoggerInterface The constructed logger class.
 68:      * @throws \RuntimeException when an object doesn't implement the correct interface.
 69:      */
 70:     protected function _create($class, $alias, $settings)
 71:     {
 72:         if (is_callable($class)) {
 73:             $class = $class($alias);
 74:         }
 75: 
 76:         if (is_object($class)) {
 77:             $instance = $class;
 78:         }
 79: 
 80:         if (!isset($instance)) {
 81:             $instance = new $class($settings);
 82:         }
 83: 
 84:         if ($instance instanceof LoggerInterface) {
 85:             return $instance;
 86:         }
 87: 
 88:         throw new RuntimeException(
 89:             'Loggers must implement Psr\Log\LoggerInterface.'
 90:         );
 91:     }
 92: 
 93:     /**
 94:      * Remove a single logger from the registry.
 95:      *
 96:      * @param string $name The logger name.
 97:      * @return void
 98:      */
 99:     public function unload($name)
100:     {
101:         unset($this->_loaded[$name]);
102:     }
103: }
104: