🔍 🙆🏿 🌡️ Deploying a Symfony Application to AWS Lambda 🎅🏾 👴🏻 🎒

First, let's understand what a serverless architecture is and when is it needed.

Serverless architecture allows you to execute snippets of code without the hassle of infrastructure: in this case, the cloud provider handles the management of the web server, physical hardware and administration, allowing you to focus solely on the code.

AWS Lambda , . , cron-, , API, - . . .

API, Symfony, LinkedIn. .

Symfony 5- Notifier, (Slack, Twitter, Twilio .).

Symfony LinkedIn, Notifier . , .

$ symfony new --full aws-lambda-linkedin-notifier
$ cd aws-lambda-linkedin-notifier
$ composer require eniams/linkedin-notifier

(. )

<?php
// config/bundles.php
return [
// others bundles,
Eniams\Notifier\LinkedIn\LinkedInNotifierBundle::class => ['all' => true]];
// .env
LINKEDIN_DSN=


<?php

class PostContentController
{
    /**
     * @Route("/contents", name="post_content", methods="POST")
     */
    public function __invoke(NotifierInterface $notifier, Request $request)
    {
        if(null !== $message = (\json_decode($request->getContent(), true)['message'] ?? null)) {
            $notifier->send(new Notification($message, ['chat/linkedin']));
            return new JsonResponse('message posted with success', 201);
        }

        throw new BadRequestException('Missing "message" in body');
    }
}

: API /contents

, POST message

.

11- LinkedIn — Symfony !

, :


<?php
class PostContentControllerTest extends WebTestCase
    /**
     * @dataProvider methodProvider
     */
    public function testANoPostRequestShouldReturnA405(string $method)
    {
        $client = static::createClient();

        $client->request($method, '/contents');

        self::assertEquals(405, $client->getResponse()->getStatusCode());
    }

    public function testAPostRequestWithoutAMessageInBodyShouldReturnA400()
    {
        $client = static::createClient();

        $client->request('POST', '/contents');

        self::assertEquals(400, $client->getResponse()->getStatusCode());
    }

    public function testAPostRequestWithAMessageInBodyShouldReturnA201()
    {
        $request = new Request([],[],[],[],[],[], json_encode(['message' => 'Hello World']));

        $notifier = new class implements NotifierInterface {
            public function send(Notification $notification, Recipient ...$recipients): void
            {
            }
        };

        $controller = new PostContentController();
        $response = $controller->__invoke($notifier, $request);

        self::assertEquals(201, $response->getStatusCode());
    }

    public function methodProvider()
    {
        return [
            ['GET'],
            ['PUT'],
            ['DELETE'],
        ];
    }
view rawTestPostContentController.php hosted with  by GitHub

!

! ?! AWS Lambda PHP!

: AWS Lambda , , Go, Java, Python, Ruby, NodeJS .NET.

? , !

(Matthieu Nappoli), Bref.sh, , .

Bref PHP- AWS AWS Lambda.

kernel.php :

<?php
    // Kernel.php
    public function getLogDir(): string
    {
        if (getenv('LAMBDA_TASK_ROOT') !== false) {
            return '/tmp/log/';
        }

        return parent::getLogDir();
    }

    public function getCacheDir()
    {
        if (getenv('LAMBDA_TASK_ROOT') !== false) {
            return '/tmp/cache/'.$this->environment;
        }

        return parent::getCacheDir();
    }

Serverless (. ):

$ npm install -g serverless
$ serverless config credentials --provider aws --key  --secret
$ composer require bref/bref

serverless.yaml:

service: notifier-linkedin-api

provider:
    name: aws
    region: eu-west-3
    runtime: provided
    environment: # env vars
        APP_ENV: prod
        LINKEDIN_DSN: YOUR_DSN


plugins:
    - ./vendor/bref/bref

functions:
    website:
        handler: public/index.php # bootstrap 
        layers:
            - ${bref:layer.php-73-fpm} # https://bref.sh/docs/runtimes/index.html#usage 
        timeout: 28 # Timeout to stop the compute time
        events:
            - http: 'POST /contents' # Only POST to /contents are allowed

package:
    exclude:
        - 'tests/**'
view rawserverless.yaml hosted with  by GitHub

$ serverless deploy
Serverless: Packaging service...
Serverless: Excluding development dependencies...
Serverless: Uploading CloudFormation file to S3...
Serverless: Uploading artifacts...
Serverless: Uploading service notifier-linkedin-api.zip file to S3 (10.05 MB)...
Serverless: Validating template...
Serverless: Updating Stack...
Serverless: Checking Stack update progress...
....................
Serverless: Stack update finished...
Service Information
service: notifier-linkedin-api
stage: dev
region: eu-west-3
stack: notifier-linkedin-api-dev
resources: 15
api keys:
  None
endpoints:
  POST - https://xxx.execute-api.eu-west-3.amazonaws.com/dev/contents
functions:
  website: notifier-linkedin-api-dev-website
layers:
  None
Serverless: Removing old service artifacts from S3...
Serverless: Run the "serverless" command to setup monitoring, troubleshooting and testing.

AWS Lambda, API https://xxx.execute-api.eu-west-3.amazonaws.com/dev/contents

.

"Symfony Framework". , , .

Deploying a Symfony Application to AWS Lambda

!

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