Monitoring web application
behaviour with
cucumber-nagios
Lindsay Holmwood <lindsay@holmwood.id.au>

http://flickr.com/photos/therefromhere/510612621/

# features/google.com.au/search.feature
Feature: google.com.au
It should be up
And I should be able to search for things
Scenario: Searching for things
When I visit \"http://www.google.com\"
And I fill in \"q\" with \"wikipedia\"
And I press \"Google Search\"
Then I should see \"www.wikipedia.org\"

--format pretty

$ bin/cucumber --require bin/common.rb \\
--require features/ \\
features/google.com.au/search.feature
--format pretty

$ bin/cucumber --require bin/common.rb \\
--require features/ \\
features/google.com.au/search.feature
Feature: google.com.au
It should be up
And I should be able to search for things
Scenario: Searching for things
When I visit \"http://www.google.com\"
And I fill in \"q\" with \"wikipedia\"
And I press \"Google Search\"
Then I should see \"www.wikipedia.org\"
1 scenario
4 steps passed
--format pretty

cucumber

cucumber
webrat

cucumber
webrat
mechanize

cucumber
webrat
mechanize
nagios =>

cucumber-nagios

$ bin/cucumber-nagios features/google.com.au/search.feature
Critical: 0, Warning: 0, 4 okay | passed=4, failed=0, total=4
cucumber-nagios

how it works
http://flickr.com/photos/sunbeer/931205335/

$ bin/cucumber-nagios \\
features/google.com.au/search.feature

$ bin/cucumber-nagios \\
features/google.com.au/search.feature
$ bin/cucumber --require bin/common.rb \\
--require features/ \\
--format Nagios::NagiosFormatter \\
features/google.com.au/search.feature

$ bin/cucumber-nagios \\
features/google.com.au/search.feature
$ bin/cucumber --require bin/common.rb \\
--require features/ \\
--format Nagios::NagiosFormatter \\
features/google.com.au/search.feature

module Nagios
class NagiosFormatter
def initialize(*args)
@failed = []; @passed = []
end
def step_passed(step, name, params)
@passed << step
end
def step_failed(step, name, params)
@failed << step
end
def scenario_executed(scenario)
@total = @failed.size + @passed.size
message = \"\"
message += \"Critical: #{@failed.size}, \"
message += \"Warning: 0, \"
message += \"#{@passed.size} okay\"
message += \" | passed=#{@passed.size))}\"
message += \", failed=#{@failed.size))}, total=#{@total}\"\"
puts message
end
end
end

#!/bin/sh
dirname=$(dirname $0)
feature=$1
$dirname/cucumber --require $dirname/common.rb \\
--require features/ \\
--format Nagios::NagiosFormatter \\
$feature
retval=$?
if [ \"$retval\" -eq \"1\" ]; then
exit 2
else
exit $retval
fi

#!/bin/sh
dirname=$(dirname $0)
feature=$1
$dirname/cucumber --require $dirname/common.rb \\
--require features/ \\
--format Nagios::NagiosFormatter \\
$feature
retval=$?
if [ \"$retval\" -eq \"1\" ]; then
exit 2
0 good
else
exit $retval
1 bad
fi
2 ugly

http://flickr.com/photos/chrisindarwin/3082606450/

Setting up

$ gem sources -a http://gems.github.com/

$ gem sources -a http://gems.github.com/
# gem install auxesis-cucumber-nagios

$ gem sources -a http://gems.github.com/
# gem install auxesis-cucumber-nagios
$ cucumber-nagios-gen project mysite.com

$ gem sources -a http://gems.github.com/
# gem install auxesis-cucumber-nagios
$ cucumber-nagios-gen project mysite.com
woosh!

$ gem sources -a http://gems.github.com/
# gem install auxesis-cucumber-nagios
$ cucumber-nagios-gen project mysite.com
woosh!
$ cd mysite.com

$ gem sources -a http://gems.github.com/
# gem install auxesis-cucumber-nagios
$ cucumber-nagios-gen project mysite.com
woosh!
$ cd mysite.com
$ rake deps

$ gem sources -a http://gems.github.com/
# gem install auxesis-cucumber-nagios
$ cucumber-nagios-gen project mysite.com
woosh!
$ cd mysite.com
$ rake deps
brr!

$ bin/cucumber-nagios-gen feature search

$ bin/cucumber-nagios-gen feature search
$ bin/cucumber-nagios features/search.feature

Quirks

Failure
*IS* an
option

begin
# foo
rescue
# bar
end

Multiple
Scenarios
per File

Critical: 1, Warning: 0, 2 okay | passed=2, failed=1, total=3
Critical: 1, Warning: 0, 4 okay | passed=4, failed=1, total=5

Instead of writing boring monitoring
plugins from scratch, you can now
do behavior driven ops!

Instead of writing boring monitoring
plugins from scratch, you can now
do behavior driven ops!
Transform from a grumpy,
misanthropic sysadmin to a hipster,
agile developer instantly.
— Bradley Taylor (http://bit.ly/lWWfE)

developers sysadmins
http://flickr.com/photos/jshappell/1313699764/

building bridges
http://flickr.com/photos/douaireg/2313764485/

http://github.com/auxesis/
cucumber-nagios
http://dryicons.com/free-icons/preview/coquette-part-3-icons-set/