8 def uri_and_times_from_status(server)
9 file = open("http://#{server}/server-status").read
10 doc = Hpricot.parse(file)
11 tables = doc / "table"
12 rows = (tables[1] / "tr")[1..-1]
13 data = rows.collect { |r| (r / "td").collect(&:inner_html) }
14 # filter where the PID is numeric, status is 'W' and host matches the server
15 matching_data = data.select { |r| r[1].to_i.positive? && r[3].match(/W/) && r[12].match(server) }
16 # return URI and number of seconds processing for each request
17 matching_data.collect { |r| [r[13], r[5].to_i] }
21 :map => "Map API calls",
22 :upload => "Changeset diff uploads",
23 :amf => "AMF API calls",
24 :history => "Element history fetches",
25 :full => "Full element fetches",
26 :trkpts => "GPX trackpoints calls",
27 :web => "Web site traffic",
28 :other => "Other API calls"
31 def categorise_uri(line)
32 uri = line.split(" ")[1]
35 when %r{api/0\.6/map} then :map
36 when %r{api/0\.6/changeset/[0-9]*/upload/} then :upload
37 when %r{api/0\.6/amf} then :amf
38 when %r{api/0\.6/(node|way|relation)/[0-9]*/history} then :history
39 when %r{api/0\.6/(node|way|relation)/[0-9]*/full} then :full
40 when %r{api/0\.6/trackpoints} then :trkpts
41 when %r{api/0\.6/} then :other
46 server = $PROGRAM_NAME.match("api_waits_(.*)")[1]
48 if ARGV[0] == "config"
49 puts "graph_title Wait times for active requests"
50 puts "graph_vlabel Average time of requests"
51 puts "graph_category api"
52 CALL_TYPES.each { |k, v| puts "#{k}.label #{v}" }
55 counts = uri_and_times_from_status(server)
56 .collect { |x, y| [categorise_uri(x), y] }
57 .each_with_object({}) do |e, h|
66 CALL_TYPES.each_key do |type|
67 count = counts[type] || [0]
68 avg = count.inject(0) { |acc, elem| acc + elem } / (1.0 * count.length)
69 puts "#{type}.value #{avg}"