How to use with a custom runtime (that also extends SymfonyRuntime)

[allan-simon]

I have a custom runtime that is like this

<?php                                                                                                     
                                                                                                                                
declare(strict_types=1);                                                                                  
                                                                                                                                         
namespace App\Runtime;                                                                                                                        
                                                                                                                                                       
use App\Config\KmsDotEnvLoader;                                                                           
use Symfony\Component\Dotenv\Dotenv;                                                                                                                        
use Symfony\Component\Runtime\SymfonyRuntime;                                                              
                                                                                                                 
class SymfonyWithKMSRuntime extends SymfonyRuntime                                                                                                                                                      
{
    /**
     * {@inheritdoc}
     *
     * @param array<mixed> $options                                                                                                                        
     */
    public function __construct(array $options = [])
    {
        parent::__construct($options);
        $kmsDotEnvLoader = new KmsDotEnvLoader(new Dotenv());
        $kmsDotEnvLoader->inject(\dirname(__DIR__).'/../'.KmsDotEnvLoader::ENCRYPTED_FILE);
    }
}

i.e it reads additional env variables from a kms-encrypted file

however if i try to use the version 0.2.0 wihtout php-fpm, it fails because the BrefRuntime is hardcoded.

Is there a way to do what I want with the bref/symfony-bridge as it is ? (i.e to get the env variables set-up, I don't mind not using 'my' runtime, as long as the job is done)

I got it working by moving this piece of code in the constructor of my kernel, but it degrades a lot the performance ( I think because now it needs to read the configuration at every request and not only cold ones ? )

[allan-simon]

WIth my PR linked above, I got it working without needing to change anything but performance are still way worse

i.e around 100ms for a /ping route vs ~17ms before with php-fpm layer , am I doing something wrong ?

[mnapoli]

Are you using BREF_LOOP_MAX to keep the kernel alive between requests (with the "function" layer)?

If not, then each request will be handled by a new process.

If you do, then running the code in the kernel's constructor should have the same result as using a custom runtime.

[allan-simon]

ah i thought BREF_LOOP_MAX was "unlimited" by default, and putting a number was to force-reboot to avoid memory leak, I will try that then ! (to be honest the doc was not clear about this parameter 👼 )

[mnapoli]

Ah interesting, if we could make that clearer in the README that might be better indeed.

[allan-simon]

indeed with BREF_LOOP_MAX it works now, and OMG , my /ping was before 10ms -> now 2ms , my /dashboard was 140ms -> now 40ms !!

[allan-simon]

by the way, do you know if now , with this method if the events that are done on a ec2 after fastcgi_finish_request are now also done after the response is sent ? because I use to have a server-side analytics that was slow on lambda because of the synchronous nature of labmda, and now it seems to not be the case anymore
(which would explain the 140 -> 40ms , as this after-response alone was taking 50ms )

[mnapoli]

The terminate event should still run synchronously (unless there were some amazing changes in Lambda). Maybe it runs much faster now for different reasons?

[allan-simon]

ok, i will try to add some log, because it seems that unfortunately it does not work anymore with blackfire ^^ (or at least not with the CLI / plugin extensions ^^)