Bref Runtime

Here is an example application. With this runtime you may use the exact same application for in local development and in production. Another benefit is that we will not use PHP-FPM.

Installation

composer require runtime/bref

Define the environment variable APP_RUNTIME for your application on Lambda.

 # serverless.yml

 # ...

 provider:
     name: aws
     runtime: provided.al2
     memorySize: 1792
     environment:
         APP_ENV: prod
+        APP_RUNTIME: Runtime\Bref\Runtime
+        BREF_LOOP_MAX: 100  # Optional

How to use

You need the extra lambda layer arn:aws:lambda:[region]:403367587399:layer:bref-sf-runtime:1 in serverless.yml.

# serverless.yml

# ...

functions:
    app:
        handler: public/index.php
        timeout: 8
        layers:
            - ${bref:layer.php-74}
            - arn:aws:lambda:eu-central-1:403367587399:layer:bref-sf-runtime:1
        events:
            -   httpApi: '*'

Symfony application

// public/index.php

use App\Kernel;

require_once dirname(__DIR__).'/vendor/autoload_runtime.php';

return function (array $context) {
    return new Kernel($context['APP_ENV'], (bool) $context['APP_DEBUG']);
};

PSR-15 application

// public/index.php

use Nyholm\Psr7\Response;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\RequestHandlerInterface;

require_once dirname(__DIR__).'/vendor/autoload_runtime.php';

return function () {
    return new class implements RequestHandlerInterface {
        public function handle(ServerRequestInterface $request): ResponseInterface
        {
            $name = $request->getQueryParams()['name'] ?? 'world';

            return new Response(200, [], "Hello $name");
        }
    };
};

PSR-11 Container

// public/index.php

use App\Kernel;

require_once dirname(__DIR__).'/vendor/autoload_runtime.php';

return function (array $context) {
    $kernel =  new Kernel($context['APP_ENV'], (bool) $context['APP_DEBUG']);
    $kernel->boot();

    return $kernel->getContainer();
};

To define what service to fetch form the container, one need to do one small change to serverless.yml

 # serverless.yml

 functions:
     app:
-         handler: public/index.php
+         handler: public/index.php:App\Service\MyHandler

Console application

// bin/console

use App\Kernel;
use Symfony\Bundle\FrameworkBundle\Console\Application;

require_once dirname(__DIR__).'/vendor/autoload_runtime.php';

return function (array $context) {
    $kernel = new Kernel($context['APP_ENV'], (bool) $context['APP_DEBUG']);

    return new Application($kernel);
};

 # serverless.yml

 functions:
     app:
-         handler: public/index.php
+         handler: bin/console