# -*- ruby -*-

# vim: set noet nosta sw=4 ts=4 :

#encoding: utf-8

#

# SNMP checks for Arborist.  Requires an SNMP agent to be installed

# on target machine, and the various "pieces" enabled.  For your platform.

#

# For example, for disk monitoring with Net-SNMP, you'll want to set

# 'includeAllDisks' in the snmpd.conf. bsnmpd on FreeBSD benefits from

# the 'bsnmp-ucd' package.  Etc.

#

require 'loggability'

require 'arborist/monitor' unless defined?( Arborist::Monitor )

require 'snmp'

using Arborist::TimeRefinements

#

	extend Loggability

	log_to :arborist

	# The version of this library.

	# Global defaults for instances of this monitor

	#

	DEFAULT_OPTIONS = {

	}

	###

	def run( nodes )

		self.log.debug "Got nodes to SNMP check: %p" % [ nodes ]

		# Create mapping of addresses back to node identifiers,

		#

		@identifiers = {}

		nodes.each_pair do |(identifier, props)|

			next unless props.key?( 'addresses' )

			address = props[ 'addresses' ].first

		end

		# Perform the work!

		#

		threads = []

			thr = Thread.new do

				Thread.current.abort_on_exception = true

				opts = {

					host:      host,

				}

				begin

					SNMP::Manager.open( opts ) do |snmp|

					end

				rescue SNMP::RequestTimeout

						error: "Host is not responding to SNMP requests."

					}

				rescue StandardError => err

						error: "Network is not accessible. (%s: %s)" % [ err.class.name, err.message ]

					}

				end

			end

			threads << thr

		end

		# Wait for thread completion

		threads.map( &:join )

		# Map everything back to identifier -> attribute(s), and send to the manager.

		#

			hash[ identifier.first ] = results

		end

		self.log.debug "Sending to manager: %p" % [ reply ]

		return reply

	end