Kotlin wrapper for togglz library.

In Kotlin it's not possible to use the Feature-Interface for enum features as in Java, because its name-method clashes with the builtin name-method of the enum class.

Therefore this wrapper uses a plain enum without implementing Feature and provides a FeatureProvider to wrap it into a Feature.

Usage (with spring)

Import dependency:

implementation("org.togglz:togglz-kotlin:2.8.0")

Create an enum for your feature toggles but don't extend the Togglz-Feature interface:

 enum class KotlinTestFeatures {
    @EnabledByDefault
    FOO,

    @Label("bar feature")
    BAR;

    fun isActive(): Boolean {
        return FeatureContext.getFeatureManager().isActive { name }
    }
}

Now, whenever you need a Feature you would create a Feature instance by using the name of your feature enum value as implementation: Feature { KotlinTestFeatures.BAR.name}

For this to work you need to create a spring configuration that creates a FeatureManagerand a FeatureProvider:

@Configuration
class MyTogglzConfiguration {

    @Bean
    fun featureProvider() = EnumClassFeatureProvider(KotlinTestFeatures::class.java)

    @Bean
    @Primary
    fun myFeatureManager(stateRepository: StateRepository,
                              userProvider: UserProvider,
                              featureProvider: FeatureProvider): FeatureManager {

        val featureManager = FeatureManagerBuilder()
                .featureProvider(featureProvider)
                .stateRepository(stateRepository)
                .userProvider(userProvider)
                .build()

        StaticFeatureManagerProvider.setFeatureManager(featureManager)
        FeatureManagerProvider.featureMgr = featureManager
        return featureManager
    }

}

##Enable all toggles

for unit tests:

val featureManager = FeatureManagerSupport.createFeatureManagerForTest(KotlinTestFeatures::class)
FeatureManagerSupport.enableAllFeatures(featureManager)

for spring acceptance tests:

@Autowired
val featureManager: FeatureManager
....
FeatureManagerSupport.allEnabledFeatureConfig(featureManager)

##Enable one toggle

FeatureManagerSupport.enable(Feature { KotlinTestFeatures.BAR.name })

Credentials

Inspired by and copied from https://github.com/e-breuninger/spring-boot-starter-breuninger/tree/master/togglz