Sensu check script for Umbraco's distributed cache last synced IDs

check-umbraco-lastsyncedids.rb

#! /usr/bin/env ruby
#
#	check-umbraco-lastsyncedids.rb
#
# DESCRIPTION:
#	Checks several Umbraco lastsynced.txt and compares their contents.
#	Will trigger a CRIT or WARN if their difference is beyond thresholds.
#
# OUTPUT:
#	plain text
#
# PLATFORMS:
#	Windows
#
# DEPENDENCIES:
#	gem: sensu-plugin
#	REQUIRES: ActiveSupport version 4.0 or above.
#
# USAGE:
#	check-umbraco-lastsyncedids.rb [-w N] [-c N] [files]
#
# EXAMPLE:
#	check-umbraco-lastsyncedids.rb C:/inetpub/site/App_Data/TEMP/DistCache/umbracoBE/LMW3SVC1ROOT-lastsynced.txt //umbracoFE01/c$/inetpub/site/App_Data/TEMP/DistCache/umbracoFE01/LMW3SVC1ROOT-lastsynced.txt //umbracoFE02/c$/inetpub/site/App_Data/TEMP/DistCache/umbracoFE02/LMW3SVC1ROOT-lastsynced.txt
#
# LICENSE:
#	Copyright 2016 <[email protected]>
#	Released under the same terms as Sensu (the MIT license); see LICENSE
#	for details.
#

require 'sensu-plugin/check/cli'

class CheckUmbracoLastSyncedIds < Sensu::Plugin::Check::CLI

	option :warn,
		:short => '-w WARN',
		:proc => proc {|a| a.to_i },
		:default => 3

	option :crit,
		:short => '-c CRIT',
		:proc => proc {|a| a.to_i },
		:default => 5

	def run

		ids = argv.map do |file|
			File.read(file).to_i
		end

		diff = ids.max - ids.min

		message ids.join(', ')

		critical if diff > config[:crit]
		warning if diff > config[:warn]
		ok

	end
	
end