My TorqueBox presentation from JRubyConf 2011

1. Why I Love T
(And Why You Will Too)
Ben Browning
Creative Commons BY-SA 3.0
JRubyConf 2011

2. Ben Browning
•TorqueBox Core Contributor
•Red Hat Senior Engineer
•Writes Java So You Don’t Have To
•@bbrowning

3. TorqueBox Team

4. What Is TorqueBox?

5. What Is TorqueBox?
+

6. TorqueBox Application Server
Sinatra Rails
Rack Tasks Procs Jobs Daemons
Web Messaging Scheduling Services
JBoss AS
Clustering Load Balancing HA

7. TorqueBox AS
•applications & Rack
Rails, Sinatra,

8. TorqueBox AS
•applications & Rack
Rails, Sinatra,
•More than just web
•Messaging
•Jobs
•Services
•Caching

9. TorqueBox AS
No XML and no Java

10. TorqueBox AS
No XML and no Java (unless you
want to)

11. TorqueBox Versions
•JBoss AS6 Releases based on
1.x Stable
•on JBoss AS7 Releases based
2.x Incremental
•We’ll concentrate on 2.x

12. Installation & Usage
gem install torquebox-server*
torquebox deploy ~/my_ruby_app
torquebox run
*http://bit.ly/tb_gem

13. Develop As Usual
Edit your application code,
refresh your browser, and see
your changes reflected.

14. The Unusual
What Makes TorqueBox Different?

15. Backgroundable

16. Regular Class
class Something
def foo
end
def bar
end
end

17. Blocking Invocations
something = Something.new
something.foo
something.bar

18. Backgroundable
class Something
include TorqueBox::Messaging::Backgroundable
def foo
end
def bar
end
end

19. Non-Blocking Invocations
something = Something.new
something.background.foo
something.background.bar

20. See The Future
something = Something.new
future = something.background.foo

21. See The Future
future.started?
future.complete?
future.error?
future.result

22. See The Future
class Something
def foo
...
count += 1
future.status = count
...
end
end

23. See The Future
# on the 'client' side
future.status_changed?
future.status # => 42

24. Messaging

26. Message Processors
app/models/print_handler.rb
include TorqueBox::Messaging
class PrintHandler < MessageProcessor
def on_message(body)
puts "Processing #{body} of #{message}"
end
end

27. Message Processors
config/torquebox.yml
messaging:
/queues/receipts:
PrintHandler:
concurrency: 5

28. Scheduled Jobs

29. Scheduled Jobs
app/jobs/newsletter_sender.rb
class NewsletterSender
def run()
subscriptions = Subscription.find(:all)
subscriptions.each do |e|
send_newsletter(e)
end
end
end

30. Scheduled Jobs
config/torquebox.yml
jobs:
monthly_newsletter:
description: first of month
job: NewsletterSender
cron: ‘0 0 0 1 * ?’

31. Services

32. Services
app/services/time_machine.rb
class TimeMachine
def initialize(opts)
@queue = Queue.new(opts['queue'])
end
def start
Thread.new { run }
end
def stop
@done = true
end
end

33. Services
app/services/time_machine.rb
class TimeMachine
def run
until @done
@queue.publish(Time.now)
sleep(1)
end
end
end

34. Services
config/torquebox.yml
services:
TimeMachine:
queue: /queue/morris_day

35. Caching

37. Rails Caching
config/application.rb
module MyApp
class Application < Rails::Application
...
config.cache_store = :torque_box_store
end
end

38. Explicit Caching
include ActiveSupport::Cache
myCache =
TorqueBoxStore.new(:name => 'MyCache',
:mode => :replicated,
:sync => true)

39. Why I Love TorqueBox

40. Batteries Included

41. Clustering
torquebox run --clustered

42. Better Java Integration
•side Java and Ruby side-by-
Deploy
•Java and Ruby applications
Shared web sessions between
•CDI, objectsJava components -
Injection of
bound to JNDI, etc
•consume in Ruby and vice-versa
Send JMS messages in Java to

43. Why You’ll Love TorqueBox

44. Open
The entire TorqueBox community
is open, not just our code.
Get involved and make a
difference.

45. Corporate Backing
Red Hat pays a team of developers to
work on TorqueBox full-time.
Confidence that when the time comes,
someone will be there to help with your
questions.

46. Resources
•http://torquebox.org
•https://github.com/torquebox
•#torquebox on FreeNode
•@torquebox on Twitter

47. Questions?
Don’t Be Shy
Image Attributions:
Mailboxes - http://www.flickr.com/photos/joanet/5094833752/
Now and Laters - http://www.flickr.com/photos/jcorduroy/3725077603/
Hand Calendar - http://www.flickr.com/photos/joelanman/366190064/
Cruise Ship Staff - http://www.flickr.com/photos/maethlin/2547037443/
Self Storage - http://www.flickr.com/photos/64588532@N02/5882291769/