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<?php |
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namespace BeyondCode\ServerTiming\Middleware; |
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use Closure; |
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use Illuminate\Http\Request; |
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use BeyondCode\ServerTiming\ServerTiming; |
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use Illuminate\Support\Str; |
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use Symfony\Component\HttpFoundation\Response; |
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class ServerTimingMiddleware |
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{ |
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/** @var ServerTiming */ |
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protected $timing; |
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/** @var float|mixed|string */ |
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protected $start; |
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public function __construct(ServerTiming $timing) |
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{ |
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$this->timing = $timing; |
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$this->start = $this->getRequestStartTime(); |
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} |
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public function handle(Request $request, Closure $next) |
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{ |
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if(false === config('timing.enabled', true)) { |
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return $next($request); |
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} |
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$this->timing->setDuration('Bootstrap', $this->getElapsedTimeInMs()); |
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$this->timing->start('App'); |
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/** @var Response $response */ |
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$response = $next($request); |
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$this->timing->stop('App'); |
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$this->timing->stopAllUnfinishedEvents(); |
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$this->timing->setDuration('Total', $this->getElapsedTimeInMs()); |
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$response->headers->set('Server-Timing', $this->generateHeaders()); |
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return $response; |
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} |
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protected function getElapsedTimeInMs() |
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{ |
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return (microtime(true) - $this->start) * 1000; |
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} |
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protected function getRequestStartTime() |
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{ |
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if (defined('LARAVEL_START')) { |
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return LARAVEL_START; |
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} |
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return $_SERVER["REQUEST_TIME_FLOAT"] ?? microtime(true); |
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} |
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protected function generateHeaders(): string |
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{ |
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$header = ''; |
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foreach ($this->timing->events() as $eventName => $duration) { |
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$eventNameSlug = Str::slug($eventName); |
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$header .= "{$eventNameSlug};desc=\"{$eventName}\";"; |
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if (!is_null($duration)) { |
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$header .= "dur={$duration}"; |
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} |
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$header .= ", "; |
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} |
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return $header; |
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} |
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} |
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beyondcode /
laravel-server-timing
