GlassFish can support multiple Ruby frameworks ... really ?

Arun Gupta, Oracle Corpblogs.sun.com/arungupta, @arungupta

What is GlassFish ?

What is GlassFish ?

GlassFish: It's a Community!

GlassFish: Lives on java.net

Since 2005

GlassFish: Reference Implementation

GlassFish v3

JRuby

• Ruby interpreter written in Java• Current Version: 1.4.0

• 1.5 RC coming soon

• Ruby 1.8.7 compatible• Some Ruby 1.9 support

• --1.9 flag (80%)

• Solid performance (~Ruby 1.9)• Startup is poor, execution usually better than 1.9

• Runs native threads• Foreign Function Interface (FFI)for C

libraries• Adopted from Rubinius, CRuby gem

• Runs Rails great!

Ruby Frameworks on GlassFish

GlassFish v3 Architecture

JVM

V3 Kernel

Django ...

Jython Container

Grizzly

WSGI

JSF

Web Container

Servlet Spec

Grails ...

GlassFish v3 Modules

Web Framework Interface

GlassFish v3 Modules Java Framework

Ruby Framework

Python Framework

JRuby Container

Rack

Rails Merb ...

Key

Why Ruby on GlassFish ? - Agile

Why ? - Easy prototyping, yet powerful

Why ? - Best of both worlds

Why ? - Database Connection Pooling

Why ? - Management

Why ? - Monitoring

Rails Deployment choicesDirectory, WAR, Gem

jruby -S gem install glassfish

http://blogs.sun.com/arungupta/entry/totd_70_jruby_and_glassfi sh

jruby -S rails helloworldcd helloworldjruby -S glassfish

jruby -S glassfish -h

-c: change the context root-e: environment-d: Runs as daemon-P: location of PID file-l: log file location-log-level: Logging level (0-7)

asadmin start-domainasadmin deploy --property "jruby.home=JRUBY_HOME" helloworld

CompleteAbsolute

Path

http://wiki.glassfi sh.java.net/Wiki.jsp?page=GlassFishV3CapistranoRecipes

jruby -S gem install warblerjruby -S warble

http://blogs.sun.com/arungupta/entry/totd_73_jruby_and_glassfi sh

WAR Deployment: Packaging

http://blogs.sun.com/arungupta/entry/totd_80_sinatra_crud_application

Any Rack-based framework ...

http://weblogs.java.net/blog/vivekp/archive/2009/04/plugin_any_ruby.html

Deployment Options

http://blogs.sun.com/arungupta/entry/totd_81_how_to_usehttp://blog.headius.com/2009/04/apache-jruby-rails-glassfi sh-easy.html

NetBeans: Develop with Pleasure

http://blogs.sun.com/arungupta/entry/screencast_26_develop_run_debug

Ruby Monitoring

• Basic Monitoring• jinfo: System properties and VM CLI flags• jmap: Shared object memory map• jstack: Stack traces of Java threads• jstat: Performance statistics on class, JIT compiler, GC, ...

• Advanced• jconsole / Visual VM• NewRelic, FiveRuns, ...

jConsole

http://blogs.sun.com/arungupta/tags/rubyonrails+jmx

Who loves Ruby on GlassFish ?

Turbo charging your JRuby Startup

• “-client” or “-server” ? (Upto 50%)• Faster startup or solid runtime ?• export JAVA_OPTS=”-client -D32”• Upto 50% improvement

• For Linux: Class Data Sharing• Delay or disable JRuby's JIT (Upto 10%)

• -X-C• jruby.compile.mode=OFF

• Avoid spawning “sub-Rubies”• Nailgun for small JRuby CLI invocations• Favorite JVM Flags

http://blog.headius.com/2010/03/jruby-startup-time-tips.html

Resources

• glassfish.org• blogs.sun.com/theaquarium• glassfish-scripting.dev.java.net• @glassfish

GlassFish can support multiple Ruby frameworks ... really ?

Arun Gupta, Oracle Corpblogs.sun.com/arungupta, @arungupta