онстантин часто выступает на конференциях с рассказами на совершенно разные и очень полезные Ruby-темы, но мы рады, что нам удалось сохранить изначальную тему выступления — Константин будет рассказывать именно о Sinatra: о истории, текущем состоянии и будущем фреймворка.

1. Sinatra
Past, Present and Future
Konstantin Haase

2. Hi!
I'm Konstantin.
I write code.

6. Back in the internet, I'm aka'ed as
@konstantinhaase on Titter
rkh on GitHub
khaase on IRC
rkh.im on DNS

8. "The big lesson in life, baby, is never
be scared of anyone or anything."
Frank Sinatra

9. "Outlines are great, quotes are
terrible."
Ben Orenstein (Speaking For Hackers)

10. Outline
The Past
The Present
The Future

11. Let's pretend you don't
know a thing...
... about Sinatra
... about Rails
... about Rack

12. The Past
Or: "How We Do HTTP"

13. 1993
CGI

14. #!/usr/bin/env perl
print "Content-type: text/htmln";
if ($ENV{"REQUEST_METHOD"} != "HEAD") {
print "n<h1>Hello Perl!</h1>n"
}

15. No structure (Hello, inline SQL!)
Enormous performance overhead
No asynchronous/streaming API
Perl? Seriously?

17. December 21, 1995
Ruby 0.95

18. #!/usr/bin/env ruby
puts "Content-Type: text/html"
if ENV["REQUEST_METHOD"] != "HEAD"
puts "", "<h1>Hello Ruby!</h1>"
end

19. Servlets

20. require 'webrick'
class Simple < WEBrick::HTTPServlet
def do_GET(req, res)
res.status = 200
res['Content-Type'] = "text/html"
res.body = "<h1>Hello Ruby!</h1>"
end
end

21. Not web server independent
No asynchronous/streaming API
Limited eco system

22. July 2004
Ruby On Rails

23. Oh
My
God!

24. Convention Over Configuration
Do Not Repeat Yourself
Model - View - Controler
Testing
The eco system, oh my!

25. Did not play well with others
Framework, not a library
No asynchronous/streaming API

26. Summer 2005
I discover Ruby!
Woohoo!

27. December 13, 2005
Rails 1.0

28. March 2007
Rack 0.1

29. proc do |env|
[200, {"Content-Type" => "text/html"},
["<h1>Hello Ruby!</h1>"]]
end

30. The simplest thing possible
Zero dependency applications
Great middleware/router infrastrucutre
Server independent applications
Easy testing

31. Near unusable directly
Rails didn't use it
No asynchronous/streaming API

32. September 9, 2007
Sinatra 0.0.1

33. get('/') { body "Hello World!" }
post('/') { erb :posted }

34. Simple and clean DSL for writing Rack
application.
Library, not framework
Plays well with anything Rack
No hidden magic

35. Pollutes Object
Uses instance_eval (slow)
No asynchronous/streaming API
One application per process

36. October 7, 2007
Sinatra 0.1.0

37. October 8, 2007
Sinatra 0.1.5

38. before { puts "starting" }
get('/') { "Hello World!" }
delete('/') { haml :deleted }
after { puts "done" }

39. November 21, 2007
rm -Rf sinatra

40. April 12, 2008
Sinatra 0.2.0
(Complete Rewrite)

41. before { halt 404 if path !~ /css/ }
error(404) { "page not found" }
get '/:name.css', :agent => /Firefox/ do
sass :firefox
end

42. April 14, 2008
rm -Rf sinatra

43. September 8, 2008
Sinatra 0.3.0

44. use Rack::Lint
configure { enable :lock }
get('/*.css') { sass :style }
__END__
@@ style
body
color: red

45. # config.ru
use SomeMiddleware
map('/a') { run Sinatra::Application }
map('/b') { run Merb::Application }

46. December 13, 2008
rm -Rf sinatra

47. January 18, 2009
Sinatra 0.9.0

48. class MyApp < Sinatra::Base
get /js(on)?/, :provides => "json" do
pass unless params[:pwd] == "foo"
"Hello World".to_json
end
get "*" do
"wrong password, probably"
end
end

49. No more instance_eval for routes
More than one application per process

50. March 23, 2010
Sinatra 1.0
Major Refactorings since 0.9.0

51. Tilt has been extracted
A ton of new helper methods
Semantic Versioning

52. April - September 2010
Maintainance crisis

53. October 24, 2010
1.1.0

54. before agent: /Firefox/ do
headers['X-Is-Firefox'] = "yes"
end
get('/') { markdown "# Hello World!" }

55. March 3, 2011
1.2.0
Major Refactoring

56. Live release at Ruby Use Group Berlin
Better extension API
Better security
Long term support

57. September 30, 2011
1.3.0

58. Live release at RubyConf in New Orleans
Better HTTP compatibility
Better security (rack-protection)
Stream/asynchronous API, finally!

59. get '/' do
stream do |out|
out << "It's gonna be legen -n"
sleep 0.5
out << " (wait for it) n"
sleep 1
out << "- dary!n"
end
end

60. connections = []
get '/' do
stream(:keep_open) do |out|
connections << out
end
end
post '/' do
connections.each do |out|
out << params[:message]
end
"message sent"
end

61. The Present

62. Who's using it?
Travis CI, Integrity, CI Joe
Picky, Resque, Gollum
Heroku, Github, Engine Yard
Songbird, University of Lausanne, Stanford
Apple, LinkedIn, British Government, BBC
...

63. It inspired a lot of other
projects!
Ruby: Almost Sinatra, Astaire, Cuba, Padrino (based on Sinatra), Pakyow,
Renee PHP: Fat-Free, Fitzgerald, Glue, klein, Laravel, Limonade,
MiMViC, Silex, Slim JavaScript: Express, Picard, Roundabout, Sammy
CoffeeScript: Zappa Python: Bottle, Denied, Flask, itty, Juno Erlang:
Fresh, Spooky Groovy: Graffiti, Ratpack Scala: Scalatra, BlueEyes
.NET: Martin, Nancy, Nina Perl: Dancer, Mojolicious Java: Spark,
Napalm, Htmleasy Haskell: Bird, Loli Fancy: Sinatra.fy Bash: Astley,
sh.inatra C: Bogart F#: Frank Lua: Mercury, Orbit Mirah: Shatner
Objective-C: RCRouter Vala: Valatra Smalltalk: RatPack
That's 52 projects in 20 languages.

64. The Future

65. 2012
Sinatra 1.4.0

66. No longer pollute Object

67. # Sinatra since 0.9.0
include Sinatra::Delegator
10.send(:get, '/') do
"this works, but it shouldn't"
end

68. def foo
42
end
foo # => 42
"hi there".foo # => 42

69. self # => main
def self.foo
42
end
foo # => 42
"hi there".foo # NoMethodError

70. class << self
include Sinatra::Delegator
end
10.send(:get, '/') do
"Now this raises a NoMethodError"
end

71. extend Sinatra::Delegator
10.send(:get, '/') do
"Now this raises a NoMethodError"
end

72. some day
Sinatra 2.0

73. Use successor of Rack (code name Ponies)
rm -Rf sinatra?

74. Thanks!
github.com / rkh / presentations