From: E F van de Laar <emiel@...>
Date: 2004-03-01T20:47:25+09:00
Subject: Possible project? sysinfo lib

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'lo all,

I've been playing with the idea of starting a new little personal project and
would like a little feedback before I really get started. I'm still brainstorming
at the moment.

My situation is as follows:

We admin several diverse servers in our student organization. The
administration team periodically gets new members and members leave as they
graduate. You can see that documenting is an important element to ease these
transitions. We have created a LaTeX doc documenting the network/system
configuration. This document is currently maintained manually and as
configurations change, we modify the doc. You can image that this
documentation will get out of sync real quick.

I'm looking to probe for various systems for specific information in real
time. At the core of this project would be a library which provides tools to
probe the underlying system for this info (CPU, mem, disks, net interfaces, etc).
Much like phpSysInfo without the web interface. This lib would only be capable
of doing the probing and how you use the info would be up to you (I would use
it with templates and perhaps a web interface a la phpSysInfo).

I'm aware of Daniel Berger's sysutils, however I'm curious if a lib like this
could be somewhat of an "umbrella" for all the system utils out there. Most of the
probing would be done by parsing output from standard system utils, however a C
extension per platform would be possible.

I threw together the attached code to make things a little clearer as to what
I'm trying to realize.

And so. :) Suggestions are welcome.

Cheers,

Emiel
-- 
E F van de Laar
PGP pubkey: %finger emiel@il.fontys.nl

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=begin
The idea is to be able to write apps querying for system information i.e. cpu,
memory, disk, network interfaces, process stats.

Apps using this lib could query for this information regardless of the
underlying platform.

My intention for this lib is so that I will be able to build documentation for
the various machines under my administration.

Possible a web interface showing all the machines in your network.
=end

module Toolkit
	class Platform
		def self.get_factory
			case `uname` 
				when /linux/i
				return Linux.new
			when /freebsd/i
				return FreeBSD.new
			else
				warn "Unsupported platform"
				exit 1
			end
		end
	end

	class Linux < Platform

		class CPU
			attr_reader :bogomips

			def initialize
				# Read /proc/cpuinfo
				self.load
			end

			def load 
				File.open("/proc/cpuinfo", "r") do |fp|
				  fp.each_line do |line|
						case line
						when /^bogomips\s*:\s*(.*)/
							@bogomips = $1
						end
					end
				end
			end
		end

		def get_cpu
			return CPU.new
		end
	end

	class FreeBSD < Platform 

		class CPU
			def bogomips
			end
		end

		def get_cpu
			return CPU.new
		end
	end

end


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require 'drb/drb'
require 'sysinfo'

hosts = ["charm", "marvin"]
infos = {}

DRb.start_service # necessary

hosts.each do |host|
	begin
		infos[host] = DRbObject.new_with_uri("druby://#{host}:2222") 
	rescue
		warn $!
	end
end

infos.each { |host, info| puts "#{host} bogomips: " + info.get_cpu.bogomips }


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require 'socket'
require 'drb/drb'
require 'sysinfo'

tk = Toolkit::Platform.get_factory

DRb.start_service("druby://#{Socket.gethostname}:2222", tk)
DRb.thread.join


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