interface/modules/zend_modules/library/Zend/Log/Filter/Priority.php

   1 <?php
   2 /**
   3  * Zend Framework (http://framework.zend.com/)
   4  *
   5  * @link      http://github.com/zendframework/zf2 for the canonical source repository
   6  * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
   7  * @license   http://framework.zend.com/license/new-bsd New BSD License
   8  */
   9
  10 namespace Zend\Log\Filter;
  11
  12 use Traversable;
  13 use Zend\Log\Exception;
  14
  15 class Priority implements FilterInterface
  16 {
  17     /**
  18      * @var int
  19      */
  20     protected $priority;
  21
  22     /**
  23      * @var string
  24      */
  25     protected $operator;
  26
  27     /**
  28      * Filter logging by $priority. By default, it will accept any log
  29      * event whose priority value is less than or equal to $priority.
  30      *
  31      * @param  int|array|Traversable $priority Priority
  32      * @param  string $operator Comparison operator
  33      * @return Priority
  34      * @throws Exception\InvalidArgumentException
  35      */
  36     public function __construct($priority, $operator = null)
  37     {
  38         if ($priority instanceof Traversable) {
  39             $priority = iterator_to_array($priority);
  40         }
  41         if (is_array($priority)) {
  42             $operator = isset($priority['operator']) ? $priority['operator'] : null;
  43             $priority = isset($priority['priority']) ? $priority['priority'] : null;
  44         }
  45         if (!is_int($priority)) {
  46             throw new Exception\InvalidArgumentException(sprintf(
  47                 'Priority must be an integer; received "%s"',
  48                 gettype($priority)
  49             ));
  50         }
  51
  52         $this->priority = $priority;
  53         $this->operator = $operator === null ? '<=' : $operator;
  54     }
  55
  56     /**
  57      * Returns TRUE to accept the message, FALSE to block it.
  58      *
  59      * @param array $event event data
  60      * @return bool accepted?
  61      */
  62     public function filter(array $event)
  63     {
  64         return version_compare($event['priority'], $this->priority, $this->operator);
  65     }
  66 }