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<?php
/**
* Piwik - free/libre analytics platform
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*/
namespace Piwik\Log\Formatter;
use Piwik\Log;
/**
* Formats a log message.
*
* Follows the Chain of responsibility design pattern, so don't forget to call `$this->next(...)`
* at the end of the `format()` method.
*/
abstract class Formatter
{
/**
* @var Formatter|null
*/
protected $next;
/**
* @param array $record
* @param Log $logger
*
* @return array Updated record.
*/
public abstract function format(array $record, Log $logger);
/**
* Chain of responsibility pattern.
*
* @param Formatter $formatter
*/
public function setNext(Formatter $formatter)
{
$this->next = $formatter;
}
protected function next(array $record, Log $logger)
{
if (! $this->next) {
return $record;
}
return $this->next->format($record, $logger);
}
}
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