Extract Greenhopper graph from Jira using Ruby

extract_greenhopper_graph_from_jira.rb

require 'rubygems'
require 'net/http'
require 'hpricot'

SERVER = "jira.example.com"
GRAPH_URL = "/secure/ChartBoard.jspa?type=CCB&selectedProjectId=xxxxx&selectedBoardId=xxxxxx&colPage=1"
Net::HTTP.start(SERVER) {|http|
  req = Net::HTTP::Get.new(GRAPH_URL)
  resp = http.request(req)
  html = Hpricot(resp.body)
  graph = html.search("img").select {|src| src.to_s.match /\/charts/}[0].attributes["src"]
  req2 = Net::HTTP::Get.new(graph)
  File.open("file.png", "w+") { |f|
    f.write http.request(req2).body
  }
}