jenkins - Dashing (Ruby) Nokogiri LoadError -
i've been working on dashboard on dashing framework, , i'm trying make little crawler collect specific data on jenkins-ci, , pass number widget. here's crawler (it's stub, counts number of "p" elements on stub html page):
require 'nokogiri' require 'open-uri' class activebuilds def initialize() @jenkins_page = nil @build_count = nil end # !stub! gets jenkins page parse xml on nokogiri @jenkins_page = nokogiri::html(open("http://localhost:80")) # !stub! counts number of 'p' items found on page @build_count = @jenkins_page.css("p").length # !stub! returns amount of active builds def amountofactivebuilds return @build_count end end and reference, not necessary, html page:
<!doctype html> <html> <head> <meta charset="utf-8"> <title>number stub | project</title> </head> <body> <h1>test</h1> <ul> <!-- count these --> <li> <div> <p>item 1 </div> <li> <div> <p>item 2 </div> <li> <div> <p>item 3 </div> <li> <div> <p>item 4 </div> <li> <div> <p>item 5 </div> <!-- stop counting --> <li> <div> item 6 </div> <li> <div> item 7 </div> </ul> </body> </html>and now, jobs/sample.rb file dashing, modified (the thing matters builds/valuation stuff):
require './activebuilds.rb' active_builds = activebuilds.new current_valuation = active_builds.amountofactivebuilds current_karma = 0 scheduler.every '2s' last_valuation = current_valuation last_karma = current_karma current_karma = rand(200000) send_event('valuation', { current: current_valuation, last: last_valuation }) send_event('karma', { current: current_karma, last: last_karma }) send_event('synergy', { value: rand(100) }) end the thing is, before had working, page on localhost, count number of "p" items , print on file, , dashing file read , display correctly, wasn't updating value on dashboard unless i'd restart it, defeats purpose of framework.
now errors:
when attempting compile sample.rb (the dashing file):
$ ruby sample.rb sample.rb:12:in '<main>': uninitialized constant scheduler (nameerror) when attempting run dashing server:
$ dashing start /home/yadayada/.rvm/gems/ruby-2.2.0/gems/backports-3.6.4/lib/backports/std_lib.rb:9:in 'require': cannot load such file -- nokogiri (loaderror) /home/yadayada/.rvm/gems/ruby-2.2.0/gems/backports-3.6.4/lib/backports/std_lib.rb:9:in 'require_with_backports' /home/yadayada/desktop/dashing/project/jobs/activebuilds.rb:2:in '<top (required)>' (...) i post html/css/coffescript components of number widget, believe problem lies on sample.rb, , number widget default.
in case code wasn't clear enough, i'm trying localhost page, count number of "p" items (later it'll active builds when switch jenkins, didn't switch yet because i'm dealing certificates), send on sample.rb, data , update every 2 seconds on dashboard display.
any suggestions welcome! in advance!
found solution:
uninstall/reinstall nokogiri gem (without sudo) put crawler lib folder , require inside jobs on job itself, placed scheduler function, this:
# job provides data of amount of active builds on jenkins using number widget # updates every 2 seconds scheduler.every '2s' # invokes crawlers lib folder dir[file.dirname(__file__) + '/lib/*rb'].each { |file| require file } # create activebuilds reference builds = activebuilds.new # attributes amount of active builds current valuation current_valuation = builds.get_amount_of_active_builds # pass current valuation last present change percentage on dashboard last_valuation = current_valuation # sends values number widget (widget id valuation) send_event('valuation', { current: current_valuation, last: last_valuation }) end