From: Francis Cianfrocca <garbagecat10@...>
Date: 2007-04-14T23:08:33+09:00
Subject: Re: SNMP agent library?

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On 4/13/07, Marcus Bristav <marcus.bristav@gmail.com> wrote:
>
> On 4/13/07, Francis Cianfrocca <garbagecat10@gmail.com> wrote:
>
> I can help with documentation. Keep in mind though that I'm still in
> research mode so the speed won't be that great initially. But I've
> heard only good things about Eventmachine so it will be exciting to
> test it out and learn to use it. Maybe we can find more uses for it
> here :)



Ok, I refactored our  app-specific MIB handling out and I have a
functionally-complete SNMP agent (minus trap support). You have to add your
own MIBs. Eventually we should have built-in support
for the standard ones, as long as they are easily scriptable. Here's what
your code would look like:

#--------------------------------------------------------
require "rubygems"
require "eventmachine"
require "net/snmp"

require 'snmpagent'
include EventMachine::SnmpAgent

agnt = Agent.new :verbose=>true

agnt.add_object [1,3,6,1,2,1,1,1,0], "baloney"
agnt.add_object [1,3,6,1,2,1,1,3,0], proc {`cat
/proc/uptime`.split.first.to_i * 100}

agnt.run
#--------------------------------------------------------


You can test with snmpwalk or any "real" management system. This code has
been tested against OpenView, Argent, SolarWinds, and some others. Obviously
the example only adds two managed objects. In practice you would add your
"real" objects in a Ruby module whose name you pass to
EventMachine::SnmpAgent::Agent#new.

If you're interested, I can send the library to your private email. If
anyone else is interested, let me know here and I'll put a distro package on
the EventMachine rubyforge page.

The net/snmp library comes from the Net::LDAP library (on Rubyforge).

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