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Tue, 23 January 2018 14:01

Eclipse User

In the openHAB ZoneMinder Binding I am trying to optimize and also add new functionality. The main issue right now is that some users requires a lot of features (frequent updates of data, images and even a video stream), where other users run their ZoneMinder server on a rather small machine, all this will slow down thier ZoneMinder Server considerably.
Many things can be fixed by optimizing code.
In this process one idea crossed my mind, and I would like to hear if this is a good idea or if it is a no go.
My thought is that since all channels must be linked to a item before it can be used, I was thinking of overriding the channelLinked / channelUnlinked and only update channels that has something attached to it.
Would this approach be acceptable in a Binding?
Right now I have added the option to enabled / disable refresh of selected channels, that would be an alternative way to go.

I have no considerations regarding openHAB, it seems to do very well even when refreshing often. It is the ZoneMinder Server I am worried about.

EDIT: Sorry for double posting, don't know how to delete one of them :-(

[Updated on: Tue, 23 January 2018 14:06] by Moderator

Wed, 24 January 2018 08:03

Eclipse User

Sure, it's a perfectly valid approach and actually done like that by many bindings.

Instead of overriding the channelLinked()/channelUnlinked() methods you may directly use the BaseThingHandler.isLinked(...) method for that purpose.

Wed, 24 January 2018 13:11

Eclipse User

Thanks for the answer and the hint. And again sorry for triple posting :-(
Chers
Martin

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