rosa-build/config/initializers/notifications.rb

Warden::Manager.after_authentication do |user,auth,opts| # after_set_user, except: fetch
  ActiveSupport::Notifications.instrument("event_log.observer", eventable: user)
end

Warden::Manager.before_failure do |env, opts|
  # raise env.inspect
  ActiveSupport::Notifications.instrument "event_log.observer", kind: 'error',
    message: (env['action_dispatch.request.request_parameters']['user'].delete_if{|k,v| k == 'password'}.inspect rescue nil)
end

Warden::Manager.before_logout do |user,auth,opts|
  ActiveSupport::Notifications.instrument("event_log.observer", eventable: user)
end

ActiveSupport::Notifications.subscribe "event_log.observer" do |name, start, finish, id, payload|
  if c = EventLog.current_controller
    eventable = payload[:eventable]
    message = payload[:message].presence; message ||= eventable.event_log_message if eventable.respond_to?(:event_log_message)
    EventLog.create_with_current_controller kind: (payload[:kind].presence || 'info'), message: message,
                                            eventable: eventable, eventable_name: payload[:eventable_name].presence
  end
end