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| <?php | |
| namespace App\FeatureFlag\Resolver; | |
| use Symfony\Component\DependencyInjection\Attribute\AutoconfigureTag; | |
| // In order to tag all classes that implements this interface | |
| #[AutoconfigureTag()] | |
| interface FeatureFlagResolverInterface | |
| { | |
| public function isEnabled(string $name): bool; | |
| public function supports(string $name): bool; | |
| } | |
| // fetch the feature flag in database | |
| final class DatabaseFeatureFlagResolver implements FeatureFlagResolverInterface | |
| { | |
| public function __construct(private readonly FeatureFlagRepository $featureFlagRepository) {} | |
| public function isEnabled(string $name): bool | |
| { | |
| return $this->featureFlagRepository->getByName($name)->isEnabled(); | |
| } | |
| public function supports(string $name): bool | |
| { | |
| // Does the feature is in the configuration Database source? | |
| return \in_array($name, DatabaseStorageFeatureFlagEnum::names()); | |
| } | |
| } | |
| // fetch the feature flag in Symfony parameter | |
| final class ParameterFeatureFlagResolver implements FeatureFlagResolverInterface | |
| { | |
| public function __construct(private readonly ParameterBagInterface $parameterBag){} | |
| public function isEnabled(string $name): bool | |
| { | |
| return $this->parameterBag->get($name); | |
| } | |
| public function supports(string $name): bool | |
| { | |
| // Does the feature is in the configuration Parameter source? | |
| return \in_array($name, ParameterFeatureFlagEnum::names()); | |
| } | |
| } | |
| // return the feature flag depending a period | |
| final class PeriodFeatureFlagResolver implements FeatureFlagResolverInterface | |
| { | |
| public function isEnabled(string $name): bool | |
| { | |
| $now = new \DateTime(); | |
| return $now > new \DateTime("24-07-2023 23:00") | |
| && $now < new \DateTime("25-07-2023 08:00"); | |
| } | |
| public function supports(string $name): bool | |
| { | |
| // Does the feature is in the configuration Period source? | |
| return \in_array($name, PeriodFeatureFlagEnum::names(), 1); | |
| } | |
| } | |
| // return the feature flag with random true/false to simulate A/B testing | |
| final class ABTestingFeatureFlagResolver implements FeatureFlagResolverInterface | |
| { | |
| public function isEnabled(string $name): bool | |
| { | |
| return random_int(0, 1); | |
| } | |
| public function supports(string $name): bool | |
| { | |
| // Does the feature is in the configuration A/B testing source? | |
| return \in_array($name, ABTestingFeatureFlagEnum::names()); | |
| } | |
| } |
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