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https://issues.apache.org/jira/browse/ISIS-1176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Keir Haywood closed ISIS-1176.
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Resolution: Fixed
> Provide the capability to push notification messages to end-users without
> refreshing (using web sockets or Atmosphere etc).
> ---------------------------------------------------------------------------------------------------------------------------
>
> Key: ISIS-1176
> URL: https://issues.apache.org/jira/browse/ISIS-1176
> Project: Isis
> Issue Type: New Feature
> Components: Isis Core
> Affects Versions: core-1.8.0
> Reporter: Daniel Keir Haywood
> Priority: Minor
> Fix For: 2.0.0-M3
>
>
> For example, if an end-user submits a long-running job, then the action
> should acknowledge the request. When the job completes then we should
> provide a mechanism to notify the user (if they are using the system).
> ~~~~~~~~
> (Jul 2015, Dan):
> One likely technology will be web sockets or Atmosphere; Wicket integrates
> with both.
> (Oct 2016, Martin on mailing list suggested):
> The simplest way is to use
> AbstractTimerAjaxBehavior/AjaxSelfUpdatingBehavior. This would do polling,
> i.e. every N seconds an Ajax call will be made to check whether there is new
> data to show.
> If you need to do server push, i.e. whenever new data comes to push it
> immediately to the client then I'd suggest Wicket Native WebSocket instead of
> Atmosphere. Nowadays all browsers support WebSocket (IE10+ and all others)
> and almost everyone deploys on web server that support JSR 356 -
> https://ci.apache.org/projects/wicket/guide/7.x/guide/nativewebsockets.html.
> It's usage is as easy as Wicket Ajax.
> Another option is Server Send Events
> (https://github.com/wicketstuff/core/tree/master/wicket-html5-parent/wicket-html5)
> demo:
> https://github.com/wicketstuff/core/tree/master/wicket-html5-parent/wicket-html5-examples/src/main/java/org/wicketstuff/html5/eventsource
> ~~~~~~~~~~~~
> One possible design is a persisted entity to hold the messages, keyed by
> (username, datetime). We could then have a service that a completing action
> could call, to save the message.
> This service could check if the user is currently logged on, and if so could
> notify the user via Atmosphere or similar.
> I also think it might be nice if the Wicket UI could provide a way for the
> user to view the last 5 (say) messages, a bit like a notificatoin center. I
> think that Mac does this, and Windows 10 will do, Thus, if the user is *not*
> logged on when the job completes, then we can still bring the notification
> message to their attention when they next log on.
> Perhaps this could be added as a button on the footer bar? And/or the
> messages could slide in from this footer bar. (This is the way that the MS
> Azure portal works, and it's not too unpleasant).
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