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<?php
/*
* This file is part of the Monolog package.
*
* (c) Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Monolog\Handler;
use Monolog\Logger;
/**
* Simple handler wrapper that filters records based on a list of levels
*
* It can be configured with an exact list of levels to allow, or a min/max level.
*
* @author Hennadiy Verkh
* @author Jordi Boggiano <j.boggiano@seld.be>
*/
class FilterHandler extends AbstractHandler
{
/**
* Handler or factory callable($record, $this)
*
* @var callable|\Monolog\Handler\HandlerInterface
*/
protected $handler;
/**
* Minimum level for logs that are passes to handler
*
* @var int[]
*/
protected $acceptedLevels;
/**
* Whether the messages that are handled can bubble up the stack or not
*
* @var Boolean
*/
protected $bubble;
/**
* @param callable|HandlerInterface $handler Handler or factory callable($record, $this).
* @param int|array $minLevelOrList A list of levels to accept or a minimum level if maxLevel is provided
* @param int $maxLevel Maximum level to accept, only used if $minLevelOrList is not an array
* @param Boolean $bubble Whether the messages that are handled can bubble up the stack or not
*/
public function __construct($handler, $minLevelOrList = Logger::DEBUG, $maxLevel = Logger::EMERGENCY, $bubble = true)
{
$this->handler = $handler;
$this->bubble = $bubble;
$this->setAcceptedLevels($minLevelOrList, $maxLevel);
if (!$this->handler instanceof HandlerInterface && !is_callable($this->handler)) {
throw new \RuntimeException("The given handler (".json_encode($this->handler).") is not a callable nor a Monolog\Handler\HandlerInterface object");
}
}
/**
* @return array
*/
public function getAcceptedLevels()
{
return array_flip($this->acceptedLevels);
}
/**
* @param int|array $minLevelOrList A list of levels to accept or a minimum level if maxLevel is provided
* @param int $maxLevel Maximum level to accept, only used if $minLevelOrList is not an array
*/
public function setAcceptedLevels($minLevelOrList = Logger::DEBUG, $maxLevel = Logger::EMERGENCY)
{
if (is_array($minLevelOrList)) {
$acceptedLevels = array_map('Monolog\Logger::toMonologLevel', $minLevelOrList);
} else {
$minLevelOrList = Logger::toMonologLevel($minLevelOrList);
$maxLevel = Logger::toMonologLevel($maxLevel);
$acceptedLevels = array_values(array_filter(Logger::getLevels(), function ($level) use ($minLevelOrList, $maxLevel) {
return $level >= $minLevelOrList && $level <= $maxLevel;
}));
}
$this->acceptedLevels = array_flip($acceptedLevels);
}
/**
* {@inheritdoc}
*/
public function isHandling(array $record)
{
return isset($this->acceptedLevels[$record['level']]);
}
/**
* {@inheritdoc}
*/
public function handle(array $record)
{
if (!$this->isHandling($record)) {
return false;
}
// The same logic as in FingersCrossedHandler
if (!$this->handler instanceof HandlerInterface) {
$this->handler = call_user_func($this->handler, $record, $this);
if (!$this->handler instanceof HandlerInterface) {
throw new \RuntimeException("The factory callable should return a HandlerInterface");
}
}
if ($this->processors) {
foreach ($this->processors as $processor) {
$record = call_user_func($processor, $record);
}
}
$this->handler->handle($record);
return false === $this->bubble;
}
/**
* {@inheritdoc}
*/
public function handleBatch(array $records)
{
$filtered = array();
foreach ($records as $record) {
if ($this->isHandling($record)) {
$filtered[] = $record;
}
}
$this->handler->handleBatch($filtered);
}
}
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