laravel-template/app/Services/PingerService.php

<?php

namespace App\Services;

use App\Services\gRPC\Pinger\PingerInterface;
use App\Services\gRPC\Pinger\PingRequest;
use App\Services\gRPC\Pinger\PingResponse;
use Spiral\RoadRunner\GRPC\ContextInterface;

class PingerService implements PingerInterface
{
    public function ping(ContextInterface $ctx, PingRequest $in): PingResponse
    {

        return new PingResponse([
            'status_code' => rand(200, 500)
        ]);
    }
}