added ruby bindings ... thanks to Loïs LHERBIER lois.lherbier covadis.ch

[rrdtool.git] / bindings / ruby / test.rb

diff --git a/bindings/ruby/test.rb b/bindings/ruby/test.rb
new file mode 100755 (executable)
index 0000000..3cdcca6
--- /dev/null
+++ b/bindings/ruby/test.rb
@@ -0,0 +1,50 @@
+#!/usr/bin/env ruby
+# $Id: test.rb,v 1.2 2002/10/22 17:34:00 miles Exp $
+# Driver does not carry cash.
+
+require "RRD"
+
+name = "test"
+rrd = "#{name}.rrd"
+start = Time.now.to_i
+
+puts "creating #{rrd}"
+RRD.create(
+    rrd,
+    "--start", "#{start - 1}",
+    "--step", "300",
+       "DS:a:GAUGE:600:U:U",
+    "DS:b:GAUGE:600:U:U",
+    "RRA:AVERAGE:0.5:1:300")
+puts
+
+puts "updating #{rrd}"
+start.to_i.step(start.to_i + 300 * 300, 300) { |i|
+    RRD.update(rrd, "#{i}:#{rand(100)}:#{Math.sin(i / 800) * 50 + 50}")
+}
+puts
+
+puts "fetching data from #{rrd}"
+(fstart, fend, data) = RRD.fetch(rrd, "--start", start.to_s, "--end", (start + 300 * 300).to_s, "AVERAGE")
+puts "got #{data.length} data points from #{fstart} to #{fend}"
+puts
+
+puts "generating graph #{name}.png"
+RRD.graph(
+   "#{name}.png",
+    "--title", " RubyRRD Demo", 
+    "--start", "#{start} + 1 h",
+    "--end", "#{start} + 1000 min",
+    "--interlace", 
+    "--imgformat", "PNG",
+    "--width=450",
+    "DEF:a=#{rrd}:a:AVERAGE",
+    "DEF:b=#{rrd}:b:AVERAGE",
+    "CDEF:line=TIME,2400,%,300,LT,a,UNKN,IF",
+    "AREA:b#00b6e4:beta",
+    "AREA:line#0022e9:alpha",
+    "LINE3:line#ff0000")
+puts
+
+print "This script has created #{name}.png in the current directory\n";
+print "This demonstrates the use of the TIME and % RPN operators\n";