Add owfs_temperature_

git-svn-id: svn+ssh://asteria.noreply.org/svn/weaselutils/trunk@106 bc3d92e2-beff-0310-a7cd-cc87d7ac0ede

1 files changed, 93 insertions, 0 deletions

diff --git a/munin/owfs_temperature_ b/munin/owfs_temperature_
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+++ b/munin/owfs_temperature_
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+#!/usr/bin/ruby
+#
+# Copyright (c) 2006 Peter Palfrader
+#
+#%# family=auto
+#%# capabilities=autoconf suggest
+#
+# Munin plugin to moniture temperatures reported by 1-wire devices
+# 
+# I use owfs to mount the 1-wire bus to /var/lib/owfs
+#   http://owfs.sourceforge.net/
+#
+# Add the following to your /etc/munin/plugin-conf.d/munin-node:
+# [owfs_temperature_10.D234EE000800]
+# env.title = 'in rack 3'
+# env.label = 'rack 3'
+#
+
+$owfs_path = '/var/lib/owfs'
+$owfs_path = ENV['OWFSPATH'] if ENV['OWFSPATH']
+
+def bail_out(m)
+	STDERR.puts "#{$0}: #{m}"
+	exit 1
+end
+
+def autoconf
+	if File.directory?($owfs_path)
+		if File.directory?($owfs_path + '/structure')
+			puts "yes"
+		else
+			puts "no (#{$owfs_path}/structure does not exist or permission denied - owfs not mounted?)"
+		end
+	else
+		puts "no (#{$owfs_path} does not exist or permission denied)"
+	end
+end
+def suggest
+	Dir.glob($owfs_path+'/[0-9A-F][0-9A-F].*/temperature').each do |path|
+		puts File.basename(File.dirname(path))
+	end
+end
+
+def normalize_sensor(s)
+	s = s.downcase
+	s = s.tr('-', 'M')
+	s = s.tr('+', 'P')
+	s.tr('^a-zA-Z0-9', '_')
+end
+
+def query_device
+	match = /_([0-9A-F][0-9A-F]\..*?)$/.match($0)
+	unless match
+		bail_out "Could not figure out which device you want based on executeable name."
+	end
+	match[1]
+end
+
+def config
+	device = query_device
+	title = ENV['title'] ?
+	        ENV['title'] :
+	        device
+	label = ENV['label'] ?
+	        ENV['label'] :
+	        device
+	puts "graph_title Temperatures #{title}"
+	puts "graph_args --base 1000"
+	puts "graph_vlabel degrees Celsius";
+	puts "graph_category sensors"
+	puts "graph_info Temperature reported by 1-wire devices"
+	n = normalize_sensor device
+	puts "#{n}.label #{label}"
+end
+
+def report
+	device = query_device
+	temp = File.new($owfs_path+'/'+device+'/temperature').read
+	n = normalize_sensor device
+	puts "#{n}.value #{temp}"
+end
+
+
+case ARGV[0]
+	when "autoconf"
+		autoconf
+	when "suggest"
+		suggest
+	when "config"
+		config
+	else
+		report
+end