Update - A small correction in the notify method. Please refer the code in the blog post for the change.
I have been working on schnell for quiet sometime and am moving towards another release. But the beginning of schnell is not as an automation testing tool. I started writing schnell as a wrapper to WWW::Mechanize to help my team to do the automated monitoring of websites. We had the requirement of monitoring a set of production websites to see their status every few minutes. But the condition was not to just see if the websites are accessible but to run a quick smoke test on them and see if they work.
A typical scenario would be to check if the website is available, log into it and see if it works. Here is the sample code of the site monitor we used to have. This has taken a mature version now which I am planning to release as open source.
You need to have mechanize, rubyful_soup, rufus_scheduler, log4r for this code to run. You can also do this with the latest jruby version of schell with a few changes in the notify method (Exceptions are handled differently in jruby version). The advantage of mechanize version is it can be run on native ruby. If you are running this code on latest version use jruby instead of ruby.
THIS IS ONLY A SAMPLE CODE.require "../hui"
require "log4r"
require "rufus/scheduler"
include Log4r
class TestSite1
URL = "http://localhost:9999"
def self.monitor
browser = Browser.new
browser.goto URL
browser.link(:text, "buttons1.html").click
browser.button(:value,"Click Me").click
raise "Not able to get PASS" unless browser.text.include?("PASS")
end
end
class TestSite2
URL = "http://localhost:8888"
def self.monitor
browser = Browser.new
browser.goto URL
browser.link(:text, "links1.html").click
browser.link(:text,"test1").click
raise "Not able to get Links2-Pass" unless browser.text.include?("Links2-Pass")
end
end
$sitelog = Logger.new 'sitelog'
$sitelog.outputters = Outputter.stdout
scheduler = Rufus::Scheduler.new
trap("INT") do
$sitelog.info "stopping SiteMon..."
scheduler.stop
end
scheduler.start
monitered_websites = [TestSite1,TestSite2]
def notify(website,message)
if message.include? "Unable to navigate"
$sitelog.error "#{website.const_get('URL')} #{message}"
else
$sitelog.warn "#{website.const_get('URL')} #{message}"
end
end
$sitelog.info "starting SiteMon..."
scheduler.schedule_every "60s", :first_in => "5s" do
monitered_websites.each do |site|
begin
site.monitor
rescue => ex
notify site, ex.message
end
end
end
scheduler.join
There are a few things I am exploring now. Parallelism in monitoring, notification through Microsoft Office Communicator (We use mails as of now.) and a better modular structure.
I have published this code as well as the mechanize version of schnell (Used to call it hui) in GPL license as a download here. It is a very basic version of schnell and not all conditions and exceptions are covered. If you want to have better functionality, you can use the latest version with schnell in jruby. Please let me know if you have any suggestions and queries.
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