How to use

ApplicationUsage$ApplicationEvent

in

brooklyn.management.usage

Date eventStartDate = current.getDate();
Date eventEndDate;
  eventEndDate = next.getDate();
} else if (current.getState() == Lifecycle.DESTROYED) {
  eventEndDate = eventStartDate;
} else {
UsageStatistic statistic = new UsageStatistic(ApplicationTransformer.statusFromLifecycle(current.getState()), usage.getApplicationId(), usage.getApplicationId(), format(eventStartDate), format(eventEndDate), duration, usage.getMetadata());
log.trace("Adding application usage statistic to response for app {}: {}", usage.getApplicationId(), statistic);
result.add(statistic);

@Override
public void recordApplicationEvent(Application app, Lifecycle state) {
  log.debug("Storing location lifecycle event: application {} in state {};", new Object[] {app, state});
  ConcurrentMap<String, ApplicationUsage> eventMap = managementContext.getStorage().getMap(APPLICATION_USAGE_KEY);
  synchronized (mutex) {
    ApplicationUsage usage = eventMap.get(app.getId());
    if (usage == null) {
      usage = new ApplicationUsage(app.getId(), app.getDisplayName(), app.getEntityType().getName(), ((EntityInternal)app).toMetadataRecord());
    }
    usage.addEvent(new ApplicationUsage.ApplicationEvent(state));        
    eventMap.put(app.getId(), usage);
  }
}