GuiceyLifecycleListener (dropwizard-guicey 5.10.2 API)

All Known Implementing Classes:

ApplicationStartupListenerAdapter, ConfigurationDiagnostic, ExtensionsHelpDiagnostic, GuiceAopDiagnostic, GuiceBindingsDiagnostic, GuiceyLifecycleAdapter, GuiceyStartupListenerAdapter, JerseyConfigDiagnostic, LifecycleDiagnostic, UniqueGuiceyLifecycleListener, WebMappingsDiagnostic, YamlBindingsDiagnostic

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface GuiceyLifecycleListener
```
Guicey lifecycle listener covers all valuable phases of guicey configuration. It could be used either for startup monitoring or for some advanced features implementation (based on installers, extensions modules or bundles post-processing).
Example usage: LifecycleDiagnostic.
Listener is not registered if equal listener were already registered (Set used as listeners storage), so if you need to be sure that only one instance of some listener will be used implement Object.equals(Object) and Object.hashCode(). For example, this is used to resolve case where DiagnosticHook installed and some reports were already enabled in bundle directly: thanks to correct equals in reports, user will not see duplicate reports.

Since:

17.04.2018

See Also:

GuiceyLifecycleAdapter, UniqueGuiceyLifecycleListener

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  void onEvent(GuiceyLifecycleEvent event)
  Called with specific lifecycle event.

- Method Detail
  - onEvent
```
void onEvent(GuiceyLifecycleEvent event)
```
    Called with specific lifecycle event. Event object may contain event specific objects. Event always contain main objects, available at this point (like configuration, environment, injector etc).
    
    Parameters:
    
    event - event instance
    
    See Also:
    
    for possible event types