Code example for connecting Laravel to Prometheus

The content of this article is about the code example of connecting Laravel to Prometheus. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

Increase the 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]);
    }
}

The above is the detailed content of Code example for connecting Laravel to Prometheus. For more information, please follow other related articles on the PHP Chinese website!