Subversion-Projekte lars-tiefland.laravel_shop

<?php namespace Clockwork\Helpers;

use Clockwork\Request\Request;

// Generates Server-Timing header value
class ServerTiming
{
        // Performance metrics to include
        protected $metrics = [];

        // Add a performance metric
        public function add($metric, $value, $description)
        {
                $this->metrics[] = [ 'metric' => $metric, 'value' => $value, 'description' => $description ];

                return $this;
        }

        // Generate the header value
        public function value()
        {
                return implode(', ', array_map(function ($metric) {
                        return "{$metric['metric']}; dur={$metric['value']}; desc=\"{$metric['description']}\"";
                }, $this->metrics));
        }

        // Create a new instance from a Clockwork request
        public static function fromRequest(Request $request, $eventsCount = 10)
        {
                $header = new static;

                $header->add('app', $request->getResponseDuration(), 'Application');

                if ($request->getDatabaseDuration()) {
                        $header->add('db', $request->getDatabaseDuration(), 'Database');
                }

                // add timeline events limited to a set number so the header doesn't get too large
                foreach (array_slice($request->timeline()->events, 0, $eventsCount) as $i => $event) {
                        $header->add("timeline-event-{$i}", $event->duration(), $event->description);
                }

                return $header;
        }
}