added adam jacob's munin-to-graphite script

Author: cdavis

contrib/munin-graphite.rb

@@ -0,0 +1,92 @@
+#!/usr/bin/env ruby
+#
+# Written by Adam Jacob <adam@hjksolutions.com>
+#
+# The latest version is available at:
+#
+# http://github.com/adamhjk/munin-graphite/tree/master/munin-graphite.rb
+
+require 'socket'
+
+class Munin
+  def initialize(host='localhost', port=4949)
+    @munin = TCPSocket.new(host, port)
+    @munin.gets
+  end
+  
+  def get_response(cmd)
+    @munin.puts(cmd)
+    stop = false 
+    response = Array.new
+    while stop == false
+      line = @munin.gets
+      line.chomp!
+      if line == '.'
+        stop = true
+      else
+        response << line 
+        stop = true if cmd == "list"
+      end
+    end
+    response
+  end
+  
+  def close
+    @munin.close
+  end
+end
+
+class Carbon
+  def initialize(host='localhost', port=2003)
+    @carbon = TCPSocket.new(host, port)
+  end
+  
+  def send(msg)
+    @carbon.puts(msg)
+  end
+  
+  def close
+    @carbon.close
+  end
+end
+
+while true
+  metric_base = "servers."
+  all_metrics = Array.new
+
+  munin = Munin.new(ARGV[0])
+  munin.get_response("nodes").each do |node|
+    metric_base << node.split(".").reverse.join(".")
+    puts "Doing #{metric_base}"
+    munin.get_response("list")[0].split(" ").each do |metric|
+      puts "Grabbing #{metric}"
+      mname = "#{metric_base}"
+      has_category = false
+      base = false
+      munin.get_response("config #{metric}").each do |configline|
+        if configline =~ /graph_category (.+)/
+          mname << ".#{$1}"
+          has_category = true
+        end
+        if configline =~ /graph_args.+--base (\d+)/
+          base = $1
+        end
+      end
+      mname << ".other" unless has_category
+      munin.get_response("fetch #{metric}").each do |line|
+        line =~ /^(.+)\.value\s+(.+)$/
+        field = $1
+        value = $2
+        all_metrics << "#{mname}.#{metric}.#{field} #{value} #{Time.now.to_i}"
+      end
+    end
+  end
+
+  carbon = Carbon.new(ARGV[1])
+  all_metrics.each do |m|
+    puts "Sending #{m}"
+    carbon.send(m)
+  end
+  sleep 60
+end
+