CDIEventConfig.java

public class Configuration {
    public boolean loggingEnabled = false;
    public boolean someOptimizationEnabled = false;
    public boolean someStuffEnabled = false;
}

@Inject Event<Configuration> configEvt;

public void customConfiguration() {
    Configuration config = new Configuration();
    configEvent.fire(configuration);
    if (configuration.logginEnabled) { /** Do stuff **/ }
    if (configuration.someOptimizationEnabled) { /** Do stuff **/ }
    if (configuration.someStuffEnabled) { /** Do stuff **/ }
}

public void configure(@Observes Configuration configuration) {
    configuration.logginEnabled = true;
    configuration.someStuffEnabled = true;
}