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From ahgittin <...@git.apache.org>
Subject [GitHub] brooklyn-server issue #561: better presentation for sensor publishing tasks
Date Thu, 16 Feb 2017 10:47:11 GMT
Github user ahgittin commented on the issue:

    https://github.com/apache/brooklyn-server/pull/561
  
    noticed when working on #559 .  related to but not implementing ML discussion at this
time around whether `entities/xxx/activities` API should default/optionally `includeBackground`.
 when listing bg tasks this gets rid of the annoying blank ones in the list; now you see:
    
    ![image](https://cloud.githubusercontent.com/assets/496540/23017978/4041d4d4-f434-11e6-8229-1d7ba7d202b0.png)
    
    and clicking through you can see:
    
    ![image](https://cloud.githubusercontent.com/assets/496540/23018012/5f748fae-f434-11e6-8d23-2fcb2b7f5f79.png)
    
    
    Note the addition of the `SENSOR` tag.  This could be used in UI's to filter sensor publication
tasks /cc @tbouron .
    
    Also note that if entity `child` publishes a sensor, eg in the course of `start`, and
someone else, say `parent` is subscribed to it, the event does _not_ currently show up when
you ask for `child`'s background tasks (because it runs with the `parent` as the context entity)
nor the `start` task's subtasks (as we don't normally want to execute it as an in-queue subtask).
 Thus that event will _not_ show up even if you `includeBackground` on the `start` task; it
will only show up if you query `parent` entity's tasks (with `includeBackground` if we change
the default for that endpoint as discussed on ML).  However it will still report the `child.start`
as his "submitted by".  If that is a problem we should add an index on `submittedBy` for tasks
so we can properly and efficiently get `includeBackground` tasks submitted by a task even
across entity boundaries.  However ATM I think it is a minor but liveable quirk.  (In any
case it isn't being introduced here, it is just becoming clea
 rer because other things are being clarified.)


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