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Filename : ZendMonitorHandler.php
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<?php declare(strict_types=1);

/*
 * 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\Formatter\FormatterInterface;
use Monolog\Formatter\NormalizerFormatter;
use Monolog\Level;
use Monolog\LogRecord;

/**
 * Handler sending logs to Zend Monitor
 *
 * @author  Christian Bergau <cbergau86@gmail.com>
 * @author  Jason Davis <happydude@jasondavis.net>
 */
class ZendMonitorHandler extends AbstractProcessingHandler
{
    /**
     * @throws MissingExtensionException
     */
    public function __construct(int|string|Level $level = Level::Debug, bool $bubble = true)
    {
        if (!function_exists('zend_monitor_custom_event')) {
            throw new MissingExtensionException(
                'You must have Zend Server installed with Zend Monitor enabled in order to use this handler'
            );
        }

        parent::__construct($level, $bubble);
    }

    /**
     * Translates Monolog log levels to ZendMonitor levels.
     */
    protected function toZendMonitorLevel(Level $level): int
    {
        return match ($level) {
            Level::Debug     => \ZEND_MONITOR_EVENT_SEVERITY_INFO,
            Level::Info      => \ZEND_MONITOR_EVENT_SEVERITY_INFO,
            Level::Notice    => \ZEND_MONITOR_EVENT_SEVERITY_INFO,
            Level::Warning   => \ZEND_MONITOR_EVENT_SEVERITY_WARNING,
            Level::Error     => \ZEND_MONITOR_EVENT_SEVERITY_ERROR,
            Level::Critical  => \ZEND_MONITOR_EVENT_SEVERITY_ERROR,
            Level::Alert     => \ZEND_MONITOR_EVENT_SEVERITY_ERROR,
            Level::Emergency => \ZEND_MONITOR_EVENT_SEVERITY_ERROR,
        };
    }

    /**
     * @inheritDoc
     */
    protected function write(LogRecord $record): void
    {
        $this->writeZendMonitorCustomEvent(
            $record->level->getName(),
            $record->message,
            $record->formatted,
            $this->toZendMonitorLevel($record->level)
        );
    }

    /**
     * Write to Zend Monitor Events
     * @param string       $type      Text displayed in "Class Name (custom)" field
     * @param string       $message   Text displayed in "Error String"
     * @param array<mixed> $formatted Displayed in Custom Variables tab
     * @param int          $severity  Set the event severity level (-1,0,1)
     */
    protected function writeZendMonitorCustomEvent(string $type, string $message, array $formatted, int $severity): void
    {
        zend_monitor_custom_event($type, $message, $formatted, $severity);
    }

    /**
     * @inheritDoc
     */
    public function getDefaultFormatter(): FormatterInterface
    {
        return new NormalizerFormatter();
    }
}