[opennms-devel] Categories and other groupings

Hi,
	I know there's been some (a lot?) of discussion over the past
few years about categories, particularly with respect to the front page
and the surveillance views.  I've been pondering lately, and have an
idea. 

1) We should have one and only one type of "category" or "group" within
OpenNMS; these groups can be used for 
	a) The Web UI, including
		i) The front page
		ii) Dashboard
		iii) Surveillance view (is this the dashboard?)
		iv) Any future access control we might put in.
		v) Reporting
	b) Thresholds, Polling, Collecting, Capsd etc, being used to
specify nodes for packages in each of these (i.e. replacing the
"specific" and "include-range" type elements). 
	c) Ummm, anything else?

2) These categories can be made up of 
	a) Specific IPs 
	b) IP ranges/IPLike expressions 
	c) Specific *nodes* already in the database
	d) nodes by name/regex (matched at runtime)
	e) Other categories (nested categories)
	Item (c) in particular enables simple web-based manipulation of
these categories, e.g. user goes to the node page of a newly discovered
node, and uses some suitable UI to add this node to one or more existing
groups.

The web UI aspects of this lead to the potential to manipulate which
thresholds apply to which nodes (rather than filtering at notification
time, *after* the event has been generated and logged); similarly, data
collection can be streamlined based on arbitrary categories.

Being able to make groups of IP addresses (specific or expression) and
also by adding individual nodes allows for the gamut of networks.  What
I mean is that on some networks, with 10K servers, you'd never add nodes
to groups by hand, and you'd have some sensible IP scheme you can use to
make your categories in big swathes.  On other networks with 20-30
servers, IP schemes would be a PITA, and adding nodes by hand to one or
more categories is the only sensible mechanism.  

I'm interested in making this happen (it'll take time though; it's
pretty far reaching).  Any thoughts or comments?  Too big a chunk to
chew?

Craig Miskell,
Technical Support,
AgResearch Invermay
03 489-9279
Everything about the *nix culture points to not
walking anywhere except possibly to a pub :-P
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