Based upon hard and most appreciated work by: David Bacher <drbacher at alum.mit.edu> Mark Probert <probertm at acm.org> Miles Egan <miles at caddr.com>
ActiveRRD is a tool for having an AR-ish wrapper around Round Robin Databases. Someday I might make this shinier, but for now I'm just going to get basic functionality so i can use it.
Automagically create RRDs based upon a model-y spec.
Update said RRDs
Query said RRDs
Generate shiny graphs from, once again, said RRDs using RRDtool
Get good rdoc coverage across it.
test test test!
class FooRrd < Activerrd::Base rrd_key :user_id # :required => false rrd_step 30
rrd_data_source 'load', :gauge, :heartbeat=>60, :min=>0, :max=>255 rrd_data_source 'hits', :absolute, :heartbeat=>300, :min=>0, :max=>20000 # hits since the last load, since it's absolute rrd_archive :average, :steps=>100 rrd_archive :max, :steps=>5, :rows=>36, :xff=>0.5 rrd_archive :max, :steps=>50, :rows=>24 end
s = FooRrd.new s.load = 300 s.hits = 20 s.user_id = 'john smith' s.save
s = FooRrd.new s.load=12 s.hits=50200 s.created_at=Time.new-2.minutes s.save
FooRrd.graph(:start=>Time.new-1.day,:end=>Time.new,:step=>2,:title=>'Foos',:vertical_label=>'Bars') # this will spit back a File.
rubyrrdtool requires RRDtool version 1.2 or later. Some RRD functions such as rrddump are only available with the latest RRDtool.
Installation is standard. If you've installed the gem, you should be ready to go. Otherwise, simply run:
(The MIT License)
Copyright © 2009 Adrian Pike
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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