class.ilTraceProcessor.php

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<?php

declare(strict_types=1);

use Monolog\LogRecord;

class ilTraceProcessor
{
    private int $level = 0;

    public function __construct(int $a_level)
    {
        $this->level = $a_level;
    }

    public function __invoke(LogRecord $record): LogRecord
    {
        if ($record['level'] < $this->level) {
            return $record;
        }

        $trace = debug_backtrace();

        // shift current method
        array_shift($trace);

        // shift internal monolog calls
        array_shift($trace);
        array_shift($trace);
        array_shift($trace);
        array_shift($trace);

        if (is_array($trace) && count($trace)) {
            $trace_info =
                ($trace[0]['class'] ?? '') . '::' .
                ($trace[0]['function'] ?? '') . ':' .
                ($trace[0]['line'] ?? '');
            $record['extra'] = array_merge(
                $record['extra'],
                array('trace' => $trace_info)
            );
        }
        return $record;
    }
}