<?php
  
  namespace Guzzle\Log;
  
  /**
   * Logs messages using Closures. Closures combined with filtering can trigger application events based on log messages.
   */
  class ClosureLogAdapter extends AbstractLogAdapter
  {
      public function __construct($logObject)
      {
          if (!is_callable($logObject)) {
              throw new \InvalidArgumentException('Object must be callable');
          }
  
          $this->log = $logObject;
      }
  
      public function log($message, $priority = LOG_INFO, $extras = array())
      {
          call_user_func($this->log, $message, $priority, $extras);
      }
  }