lib-activator

lib-activator

Conditional activation markers for enabling components based on infrastructure availability.

Installation

Add this dependency to your build.gradle:

dependencies {
    implementation 'io.seqera:lib-activator:1.0.0'
}

Usage

Use activator interfaces to conditionally enable beans based on infrastructure requirements:

// Redis activator interface
public interface RedisActivator {
}

// Component that requires Redis
@Singleton
@Requires(beans = RedisActivator.class)
public class RedisStreamProcessor implements StreamProcessor {
    // Redis-dependent implementation
}

// Conditional Redis activation based on environment
@Singleton
@Requires(env = "redis")
public class RedisActivationCondition implements RedisActivator {
}

// Configuration-based activation
@Singleton  
@Requires(property = "redis.uri")
public class RedisConfigActivation implements RedisActivator {
}

This pattern allows components to be automatically activated only when their required infrastructure is available, preventing startup failures and enabling flexible deployment configurations.

Testing

./gradlew :lib-activator:test