1. Deploy JRuby on Rails to Windows Server 2008 R2

2. About Me
• (Lu Wei Jen)
•
• http://www.handlino.com
• Facebook: http://www.facebook.com/weijenlu
• Twitter: weijenlu

3. Agenda
• Why Windows
• Why JRuby
• Using Java’s Resources
• JRoR on Windows Environment
• Deployment

4. Why Windows

5. It’s All About Money

6. Q1 2010 units Q1 2010 dollars
Windows 1,379,487 (75.3%) Windows $5.1 billion (48.9%)
Unix 65,451 (3.6%) Unix $2.3 billion (22.2%)
Linux 380,429 (20.8%) Linux $1.7 billion (16.2%)
Q4 2009 units Q4 2009 dollars
Windows 1,434,225 (73.9%) Windows $5.4 billion (41.6%)
Unix 84,851 ( 4.4%) Unix $3.9 billion (29.9%)
Linux 412,041 (21.2%) Linux $1.9 billion (14.7%)
http://www.zdnet.com/blog/microsoft/idc-windows-server-still-rules-the-server-roost/6424

7. More Jobs

8. More Jobs
More Rubiest

9. More Jobs
More Rubiest
More Resources

10. More Jobs
More Rubiest
More Resources
More Money

11. Why JRuby
• You can use java resources.
• More easy to deploy to Windows.
• True multithreading.
• JRuby is just a .jar file.
http://bit.ly/cPNg9f

12. Using Java Resources

13. Wrapping a Library(1)
require 'java'
# create objects
pdf = com.itextpdf.text.Document.new
para =
com.itextpdf.text.Paragraph.new
'Using Java resources from JRuby'
file = java.io.FileOutputStream.new
'pdf_demo.pdf'
https://gist.github.com/e4b1d813394e58188e59

14. Wrapping a Library(2)
# get_instance is an alias for
getInstance
com.itextpdf.text.pdf.PdfWriter.
get_instance(pdf, file)
pdf.open
pdf.add para
pdf.close
https://gist.github.com/e4b1d813394e58188e59

15. Wrapping a Library(3)
• Run
• jruby -J-cp itextpdf-5.1.2.jar pdf_demo.rb

16. Classpath(1)
• Environment Variable
• set RUBYOPT=-IC:jrubyitext
• set CLASSPATH=%CLASSPATH%C:jruby
itext

17. Classpath(2)
require 'java'
require 'itextpdf-5.1.2.jar'
pdf=com.itextpdf.text.Document.new
...
https://gist.github.com/238e0aefd53420ad50bf

18. Classpath(3)
• Run
• jruby pdf_demo.rb

19. Loading Classes(1)
Document = com.itextpdf.text.Document
Paragraph = com.itextpdf.text.Paragraph
...
pdf = Document.new
para = Paragraph.new 'Loading Classes'
...
https://gist.github.com/82571dca5b9ae6fb9709

20. Loading Classes(2)
java_import com.itextpdf.text.Document
java_import com.itextpdf.text.Paragraph
...
pdf = Document.new
para = Paragraph.new 'Loading Classes'
...
https://gist.github.com/3f494f48834c8db4f06d

21. Loading Classes(3)
module IText
include_package "com.itextpdf.text"
end
...
pdf = IText::Document.new
para = IText::Paragraph.new 'Loading...'
...
https://gist.github.com/da54b499d1ce8e2d38e3

22. Loading Classes(4)
#for java string
java_import "java.lang.String" do
"JString"
end
...
data = JString.new('avoid class name
conflict')
para = Paragraph.new(data)
https://gist.github.com/f4acbe684e4c1d9982b1

23. Using Objects’ Static
Methods(1)
API: com.itextpdf.text.PageSize
http://api.itextpdf.com/itext/com/itextpdf/text/PageSize.html

24. Using Objects’ Static
Methods(2)
#for itext
java_import com.itextpdf.text.Document
java_import com.itextpdf.text.PageSize
...
pdf = Document.new(
PageSize.getRectangle("A5"))
https://gist.github.com/a680fe7f47ab00967914

25. Using Objects’ Static
Fields
java_import com.itextpdf.text.Document
java_import com.itextpdf.text.PageSize
...
pdf = Document.new(PageSize::A5)
https://gist.github.com/a680fe7f47ab00967914

26. Using Objects’
constructor(1)
API: com.itextpdf.text.Document
http://api.itextpdf.com/itext/com/itextpdf/text/Document.html

27. Using Objects’
constructor(2)
java_import com.itextpdf.text.Document
java_import com.itextpdf.text.PageSize
...
pdf = Document.new
pdf = Document.new PageSize::A5
pdf = Document.new(PageSize::A5, 30,
10, 100, 20)

28. Get/Set Methods(1)
para = Paragraph.new 'Get/Set methods'
para.setAlignment(10)
para.alignment = 10
puts para.getAlignment #=> 10
puts para.alignment #=> 10
https://gist.github.com/50f2d2c82f43db1a886f

29. Get/Set Methods(2)
pdf = Document.new
pdf.setPageSize(PageSize::A5)
pdf.set_page_size(PageSize::A5)
#pdf.page_size = PageSize::A5 is not work
puts pdf.getPageSize
puts pdf.page_size
https://gist.github.com/50f2d2c82f43db1a886f

30. Using Objects’ Instance
Fields(1)
// PrivateField.java
public class PrivateField{
private int pField = 0;
public PrivateField(int i){
pField = i;
}
}
https://gist.github.com/c078f579c92e0a11fa43

31. Using Objects’ Instance
Fields(2)
#private_field.rb
class PrivateField
field_accessor :pField
end
obj = PrivateField.new(5)
puts obj.pField #=> 5
obj.pField = 10
puts obj.pField #=> 10
https://gist.github.com/6ae88c3a4472a5b91140

33. Data Type Conversion
http://kenai.com/projects/jruby/pages/CallingJavaFromJRuby#Ruby_to_Java

34. Data Type Conversion
(Array)
public class ArrayDemo {
public static String getType(Object o){
return o.getClass().getName();
}
}
https://gist.github.com/1172412

35. Data Type Conversion
(Array)
require 'java'
java_import "ArrayDemo"
puts ArrayDemo.get_type(["a", "b"])
#=>org.jruby.RubyArray
puts ArrayDemo. get_type(["a", "b"].to_java)
#=> [Ljava.lang.Object;
https://gist.github.com/717f4e5061b8f3f042d5

36. Multithread(1)
java_import java.lang.Runnable
java_import java.lang.Thread
https://gist.github.com/1172409

37. Multithread(2)
class GeneratePdf
include Runnable
def initialize
@runner = Thread.current_thread
end
def run
# Generate PDF
end
end

38. Multithread(3)
(1..100).each do
Thread.new(GeneratePdf.new).start
end

39. Multithread(4)-peach
require 'rubygems'
require 'peach'
(1..100).to_a.peach do |i|
# Generate PDF
end
https://gist.github.com/1172403

40. JRoR on Windows
Environment

41. Using MSSQL(1)
Step1: add adapter
#Gemfile
gem 'activerecord-jdbc-adapter'
gem 'activerecord-jdbcmssql-adapter'

42. Using MSSQL(2)
Step2: Download sqljdbc4.jar
Step3: add classpath
#config/environment.rb
require "#{Rails.root}/lib/java/sqljdbc4.jar"

43. Using MSSQL(3)
Step4: config database
development:
adapter: jdbc
username: sa
password: password
driver: com.microsoft.sqlserver.jdbc.SQLServerDriver
url: jdbc:sqlserver://hostname:1433;databaseName=myapp
pool: 5
timeout: 5000

44. Application Server
Trinidad
• Simple library to run rails and rackup
applications into an embedded Apache
Tomcat
• https://github.com/trinidad/trinidad
• add gem ‘trinidad’ to Gemfile
• jruby -S trinidad

45. Running Trinidad as
Windows Service(1)
• add gem ‘trinidad_init_services’ to Gemfile
• https://github.com/trinidad/
trinidad_init_services
• It’s base on Apache Commons Daemon

46. Running Trinidad as
Windows Service(2)
• If you are using 64-bit Server, you should
replace procrun.exe to 64-bit version.
• jruby -S trinidad_init_service

47. IIS Proxy to Trinidad
• using ISAPI_Rewrite 3
• config:
RewriteEngine on
RewriteBase /
RewriteLog "C:myapplogrewrite.log"
RewriteLogLevel 9
RewriteProxy (.*) http://localhost:3000/$1
• Single server license: $99

48. Background Process
Resque
• redis:
• https://github.com/dmajkic/redis/downloads
• resque:
• https://github.com/defunkt/resque
• jruby" -S rake resque:workers VERBOSE=true
COUNT=3 QUEUE=* RAILS_ENV=production

49. Deployment
Using NSIS to Deploy Rails App

50. Steps
• Install JRuby
• Copy app to suitable folder
• Batch file for install gems
• Batch file for database setting
• Batch files for running resque, redis

51. Install JRuby
Section -InstallJRuby SEC0000
SetOutPath $INSTDIR
File /r jruby_windowsjre_1_6_3.exe
ExecWait '$INSTDIR
jruby_windowsjre_1_6_3.exe -q -dir
"$INSTDIRjruby"'
SectionEnd

52. Copy App to Suitable
Folder
Section -CopyMyapp SEC0001
SetOutPath $INSTDIRmyapp
SetOverwrite on
File /r Myapp*
SectionEnd

53. Batch File for
Install Gems(1)
Section -CreateFileForGemInstall SEC0003
FileOpen $9 '$INSTDIRMyappscriptinstall_gem.bat' 'w'
FileWrite $9 '@echo off$r$n'
FileWrite $9 'CD /D "$INSTDIRMyapp"$r$n'
FileWrite $9 'set PATH=$INSTDIRjrubybin$r$n'
FileWrite $9 '"$INSTDIRjrubybinjruby" -S gem install
"vendorcachebundler-1.0.18.gem"$r$n'
FileWrite $9 '"$INSTDIRjrubybinjruby" -S bundle
install --local$r$n'
FileClose $9
SectionEnd

54. Batch File for
Database Setting
Section -CreateFileForDBConfig SEC0005
FileOpen $9 '$INSTDIRMyappscriptconfig_db.bat' 'w'
FileWrite $9 '@echo off$r$n'
FileWrite $9 'CD /D "$INSTDIRMyapp"$r$n'
FileWrite $9 '"$INSTDIRjrubybinjruby" -S rake
db:migrate RAILS_ENV=production$r$n'
FileWrite $9 '"$INSTDIRjrubybinjruby" -S rake
db:seed RAILS_ENV=production$r$n'
FileClose $9
SectionEnd

55. Batch File for Redis
Section -CreateFileForRedis SEC0007
FileOpen $9 '$INSTDIRMyappscriptredis.bat' 'w'
FileWrite $9 '@echo off$r$n'
FileWrite $9 '"$INSTDIRredisredis-server.exe"$r$n'
FileClose $9
SectionEnd

56. Batch File for Resque
Section -CreateFileForResque SEC0008
FileOpen $9 '$INSTDIRMyappscriptresque.bat' 'w'
FileWrite $9 '@echo off$r$n'
FileWrite $9 'CD /D "$INSTDIRMyapp"$r$n'
FileWrite $9 '"$INSTDIRjrubybinjruby" -S rake resque:workers
VERBOSE=true COUNT=3 QUEUE=* RAILS_ENV=production$r$n'
FileClose $9
SectionEnd

57. Redis and Resque are running
on the “Command Prompt”.
hmm.....
It’s not a good idea.

58. Using FireDaemon
• Windows Service Creation, Management,
Monitoring and Control
• http://www.firedaemon.com/purchase-
firedaemon.php
• Single License:
$49

59. Q&A