PHP code example of artprima / prometheus-metrics-bundle

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

artprima / prometheus-metrics-bundle example snippets

// app/AppKernel.php

// ...
class AppKernel extends Kernel
{
    public function registerBundles()
    {
        $bundles = [
            // ...
            new Artprima\PrometheusMetricsBundle\ArtprimaPrometheusMetricsBundle(),
        ];

        // ...
    }

    // ...
}

declare(strict_types=1);

namespace App\Metrics;

use Artprima\PrometheusMetricsBundle\Metrics\RequestMetricsCollectorInterface;
use Artprima\PrometheusMetricsBundle\Metrics\TerminateMetricsCollectorInterface;
use Prometheus\CollectorRegistry;
use Symfony\Component\HttpKernel\Event\RequestEvent;
use Symfony\Component\HttpKernel\Event\TerminateEvent;

/**
 * Class MyMetricsCollector.
 */
class MyMetricsCollector implements RequestMetricsCollectorInterface, TerminateMetricsCollectorInterface
{
    /**
     * @var string
     */
    private $namespace;

    /**
     * @var CollectorRegistry
     */
    private $collectionRegistry;

    public function init(string $namespace, CollectorRegistry $collectionRegistry): void
    {
        $this->namespace = $namespace;
        $this->collectionRegistry = $collectionRegistry;
    }

    private function incRequestsTotal(?string $method = null, ?string $route = null): void
    {
        $counter = $this->collectionRegistry->getOrRegisterCounter(
            $this->namespace,
            'http_requests_total',
            'total request count',
            ['action']
        );

        $counter->inc(['all']);

        if (null !== $method && null !== $route) {
            $counter->inc([sprintf('%s-%s', $method, $route)]);
        }
    }

    private function incResponsesTotal(?string $method = null, ?string $route = null): void
    {
        $counter = $this->collectionRegistry->getOrRegisterCounter(
            $this->namespace,
            'http_responses_total',
            'total response count',
            ['action']
        );
        $counter->inc(['all']);

        if (null !== $method && null !== $route) {
            $counter->inc([sprintf('%s-%s', $method, $route)]);
        }
    }

    // called on the `kernel.request` event
    public function collectRequest(RequestEvent $event): void
    {
        $request = $event->getRequest();
        $requestMethod = $request->getMethod();
        $requestRoute = $request->attributes->get('_route');

        // do not track "OPTIONS" requests
        if ('OPTIONS' === $requestMethod) {
            return;
        }

        $this->incRequestsTotal($requestMethod, $requestRoute);
    }

    // called on the `kernel.terminate` event
    public function collectResponse(TerminateEvent $event): void
    {
        $response = $event->getResponse();
        $request = $event->getRequest();

        $requestMethod = $request->getMethod();
        $requestRoute = $request->attributes->get('_route');

        $this->incResponsesTotal($requestMethod, $requestRoute);
    }
}

declare(strict_types=1);

namespace App\Metrics;

use Artprima\PrometheusMetricsBundle\StorageFactory\StorageFactoryInterface;
use Prometheus\Storage\Adapter;

class DummyFactory implements StorageFactoryInterface
{
    public function getName(): string
    {
        return 'dummy';
    }

    public function create(array $options): Adapter
    {
        return new Dummy($options);
    }
}