Hi guys,

just a quick update, recently we fixed an issue [1] with UI Plugin REST API 
integration trying to keep-alive the current REST API session, which was 
causing repeated "User logged in" events in GUI, along with new REST API 
session created each time the heartbeat request was fired. Please refer to 
commit message for more details on this issue.

There are some things to be aware of with regard to UI Plugin REST API 
integration:
- all plugins still receive a single session ID based on WebAdmin user 
credentials, i.e. keep the current "single-admin-session-for-all-plugins" 
behavior
- session timeout is set to 6 hours --> 2x more than default REST API session 
timeout
- WebAdmin will *not* try to keep-alive the session via periodic heartbeat 
requests, i.e. break the current 
"keep-session-alive-while-user-stays-authenticated" behavior

In practice, this means that after a user logs into WebAdmin, if no plugin 
interacts with the REST API session via provided ID for more than 6 hours, the 
session will time-out eventually. Unfortunately, for now, we can't support the 
session keep-alive mechanism due to issues with HTTP 'Authorization' header 
handling in web browsers, but with RFE [2] it would be possible to re-implement 
the session keep-alive mechanism.

On the other hand, we'll most likely revisit the current 
"single-admin-session-for-all-plugins" behavior in future, i.e. have special 
Engine users created for use with UI Plugin REST API integration, with 
permissions of such users under control by the admin. This would change the 
current behavior to something like "separate-user-session-for-each-plugin", 
with individual plugins able to create their own REST API session on demand.

Regards,
Vojtech

[1] http://gerrit.ovirt.org/#/c/14411/
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