topic How to implement a live feed? in Alfresco Archive

How to implement a live feed?

ssun — Thu, 12 Jun 2014 00:56:25 GMT

We have several workflows and want to be alerted when certain things happens.We prefer to not do it by receive emails but have a twitter feed like stream on a web page UI.On the UI it will be a mixture of different events happened in Activiti.How should I model it and implement this?Should I have si

Re: How to implement a live feed?

martin_grofcik — Thu, 12 Jun 2014 08:16:39 GMT

Hi Gordon,

You could use event listeners
http://www.activiti.org/userguide/#eventDispatcher

Regards
Martin

Re: How to implement a live feed?

trademak — Thu, 12 Jun 2014 08:16:56 GMT

What do you mean with "certain things"? You could use our event handler mechanism to catch all kinds of events:

http://activiti.org/userguide/index.html#eventDispatcher

Would that work for you?

Best regards,

Re: How to implement a live feed?

ssun — Thu, 12 Jun 2014 23:37:46 GMT

I think my "certain things" is equivalent to event. I will try to use the event handler mechanism.
But after catch the event, I probably need to save different events in a generic format into a database with index and then the front end UI can do AJAX call to refresh like a news feed.
I feel if all events are automatically saved in Activiti into a single table that you can query sort filter, it would be then very easy to implement a event news feed.

Re: How to implement a live feed?

martin_grofcik — Mon, 16 Jun 2014 06:40:38 GMT

Hi,

There is not "Log" table in the activiti. It can be part of your extension. (Can affect solution performance)

Regards
Martin

Re: How to implement a live feed?

ssun — Thu, 19 Jun 2014 23:23:49 GMT

Thank you Martin!

Re: How to implement a live feed?

jbarrez — Fri, 27 Jun 2014 14:01:40 GMT

Funny. See my commit: https://github.com/Activiti/Activiti/commit/8e01f79918392562f20ba97ef729e5ff53a09310

Like Martin says: be careful of performance impact.