Code example of Laravel accessing Prometheus

What this article brings to you is a code example of Laravel accessing Prometheus, which has certain reference value. Friends who need it can refer to it and hope to help you. Add a Counter counter on the original basis:

namespace App\Http\Middleware; use Closure; use Illuminate\Http\Request; use traumferienwohnungen\PrometheusExporter\Middleware\AbstractResponseTimeMiddleware; class PrometheusMonitor extends AbstractResponseTimeMiddleware { protected function getRouteNames() { $routeNames = []; foreach (\Route::getRoutes() as $route){ $routeNames[] = '/'.ltrim($route->uri(), '/'); } return $routeNames; } /** * Handle an incoming request. * * @param \Illuminate\Http\Request $request * @param \Closure $next * @return mixed */ public function handle(Request $request, Closure $next) { if (defined('LARAVEL_START')){ $start = LARAVEL_START; } elseif (defined('LUMEN_START')){ $start = LUMEN_START; } else { $start = microtime(true); } $this->request = $request; /** @var \Illuminate\Http\Response $response */ $response = $next($request); $route_name = $this->getRouteName(); $method = $request->getMethod(); $status = $response->getStatusCode(); $duration = microtime(true) - $start; $duration_milliseconds = $duration * 1000.0; $this->countRequest($route_name, $method, $status, $duration_milliseconds); $this->initRequestMetrics($method, $status); return $response; } public function getRouteName(){ return request()->getRequestUri(); } public function initRequestMetrics($method, $status) { $namespace = config('prometheus_exporter.namespace_http_server'); $labelNames = $this->getRequestCounterLabelNames(); $name = 'request_wuc'; $help = 'http_requests count'; $counter = $this->registry->getOrRegisterCounter( $namespace, $name, $help, $labelNames ); $counter->incBy(1, [$this->getRouteName(), $method, $status]); } }