PHP code example of em411 / feature-flag-bundle

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

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

    

em411 / feature-flag-bundle example snippets

// config/bundles.php

return [
    // ...
    Ajgarlag\FeatureFlagBundle\FeatureFlagBundle::class => ['all' => true],
];

namespace App\Feature;

use Ajgarlag\FeatureFlagBundle\Attribute\AsFeature;

/**
 * @AsFeature("xmas")
 */
final class XmasFeature
{
    public function __invoke(): bool
    {
        return date('m-d') === '12-25';
    }
}

namespace App\Feature;

use Ajgarlag\FeatureFlagBundle\Attribute\AsFeature;

/**
 * @AsFeature(name="xmas", method="isXmas")
 */
final class XmasFeature
{
    public function isXmas(): bool
    {
        return date('m-d') === '12-25';
    }
}

namespace App\Feature;

use Ajgarlag\FeatureFlagBundle\Attribute\AsFeature;

final class FeatureService
{
    /**
     * @AsFeature(name="weekend")
     */
    public function isWeekend(): bool
    {
        return date('N') >= 6;
    }

    /**
     * @AsFeature
     */
    // The feature will be named "App\Feature\FeatureService::isAnotherFeature"
    public function isAnotherFeature(): bool
    {
        return true;
    }
}

use Ajgarlag\FeatureFlagBundle\FeatureCheckerInterface;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;

class CheckoutController
{
    private $featureChecker;

    public function __construct(FeatureCheckerInterface $featureChecker)
    {
        $this->featureChecker = $featureChecker;
    }

    public function index(): Response
    {
        if (!$this->featureChecker->isEnabled('new_checkout')) {
            throw new NotFoundHttpException();
        }
        // ...
    }
}

namespace App\FeatureProvider;

use Ajgarlag\FeatureFlagBundle\Provider\ProviderInterface;

class MyProvider implements ProviderInterface
{
    public function get(string $featureName): ?callable
    {
        // ...
    }
}

namespace App\FeatureProvider;

use Ajgarlag\FeatureFlagBundle\Provider\ProviderInterface;
use App\Repository\FeatureAssignmentRepository;

final class DoctrineProvider implements ProviderInterface
{
    private $featureAssignmentRepository;

    public function __construct(FeatureAssignmentRepository $featureAssignmentRepository)
    {
        $this->featureAssignmentRepository = $featureAssignmentRepository;
    }

    public function get(string $featureName): ?callable
    {
        // Set context. Example: user identifier, IP, hostname, etc.
        $context = [];

        return function () use ($featureName, $context) {
            return $this->featureAssignmentRepository->featureIsEnabled($featureName, $context);
        };
    }
}

namespace App\FeatureProvider;

use Ajgarlag\FeatureFlagBundle\Provider\ProviderInterface;
use Symfony\Component\Security\Core\Security;
use Unleash\Client\Configuration\UnleashContext;
use Unleash\Client\Unleash;

class GitlabProvider implements ProviderInterface
{
    private $unleash;
    private $security;

    public function __construct(Unleash $unleash, Security $security)
    {
        $this->unleash = $unleash;
        $this->security = $security;
    }

    public function get(string $featureName): ?callable
    {
        $user = $this->security->getUser();

        // Set context. Example: user identifier, IP, hostname, etc.
        $context = new UnleashContext($user ? $user->getUsername() : null);

        return function () use ($featureName, $context) {
            return $this->unleash->isEnabled($featureName, $context);
        };
    }
}