Announcing GlassFish Gem for Rails

Posted by arungupta on September 14, 2007 at 6:12 AM PDT

Jerome has been
working on GlassFish gem for
Rails. Read the interesting discussion on

dev@glassfish. This blog announces a technology preview of this gem and
describes the steps to try it out.

Download GlassFish Gem from

here.

If you already have JRuby on Rails configured, then skip this step.
Otherwise you need to install JRuby on Rails.

Download and Unzip JRuby 1.0.1 from
here (lets
say JRUBY_HOME).

In JRUBY_HOME\bin directory, install Rails plugin using the following command:

jruby -S gem install rails -y --no-rdoc 
	--no-ri

The output of the command looks like:

Bulk updating Gem source index for: http://gems.rubyforge.org<br>
	Successfully installed rails-1.2.3<br>
	Successfully installed activesupport-1.4.2<br>
	Successfully installed activerecord-1.15.3<br>
	Successfully installed actionpack-1.13.3<br>
	Successfully installed actionmailer-1.3.3<br>
	Successfully installed actionwebservice-1.2.3

Some platform specific changes listed below are required due to bugs in JRuby
1.0.1.
1. Only on Windows
  1. Edit "JRUBY_HOME\bin\_jrubyvars.bat"
    and replace
```
for /r &quot;%JRUBY_HOME%\lib&quot; %%i in (*.jar) do @call &quot;%~dp0_jrubysetcp&quot; 
	%%i
```
    with
    
    for %%i in ("%JRUBY_HOME%\lib"\*.jar) do @call "%~dp0_jrubysetcp" %%i
    
    This change is required because "/r" switch causes the entire tree of the
    directory to be parsed instead of just including the JARs in JRUBY_HOME/lib
    directory. More details
    here.
    This is filed as bug
    #1347.
  2. The value of CLASSPATH environment variable increases exponentially with
    each execution of the gem. Then you start seeing the following error in your
    command shell:
```
The input line is too long.<br>
	:gotCP<br>
	was unexpected at this time.
```
    This is a filed as bug
    #1350. A workaround is to start a new shell when you start seeing the
    error.
2. Only on Macintosh: "JRUBY_HOME\bin\glassfish_rails"
  script executable permissions need to be set explicitly. This is filed as
  bug #1348.
Install the GlassFish gem using the command:
```
c:\Downloads&gt;\jruby-1.0.1\bin\gem install 
	glassfish-gem-10.0-SNAPSHOT.gem
```
The output of the command looks like:

Successfully installed GlassFish, version 10.0.0

Notice, you need to invoke this command from the directory where the gem was
downloaded.

Create a new rails app using the following command:

%JRUBY_HOME%\bin\jruby -S rails hello

The output of the command looks like:

create<br>
	create app/controllers<br>
	create app/helpers<br>
	create app/models<br>
	create app/views/layouts<br>
	create config/environments<br>
	create components<br>
	create db<br>
	create doc<br>
	create lib<br>
	create lib/tasks<br>
	create log<br>
	create public/images<br>
	create public/javascripts<br>
	create public/stylesheets<br>
	create script/performance<br>
	create script/process<br>
	create test/fixtures<br>
	create test/functional<br>
	create test/integration<br>
	create test/mocks/development<br>
	create test/mocks/test<br>
	create test/unit<br>
	create vendor<br>
	create vendor/plugins<br>
	create tmp/sessions<br>
	create tmp/sockets<br>
	create tmp/cache<br>
	create tmp/pids<br>
	create Rakefile<br>
	create README<br>
	create app/controllers/application.rb<br>
	create app/helpers/application_helper.rb<br>
	create test/test_helper.rb<br>
	create config/database.yml<br>
	create config/routes.rb<br>
	create public/.htaccess<br>
	create config/boot.rb<br>
	create config/environment.rb<br>
	create config/environments/production.rb<br>
	create config/environments/development.rb<br>
	create config/environments/test.rb<br>
	create script/about<br>
	create script/breakpointer<br>
	create script/console<br>
	create script/destroy<br>
	create script/generate<br>
	create script/performance/benchmarker<br>
	create script/performance/profiler<br>
	create script/process/reaper<br>
	create script/process/spawner<br>
	create script/process/inspector<br>
	create script/runner<br>
	create script/server<br>
	create script/plugin<br>
	create public/dispatch.rb<br>
	create public/dispatch.cgi<br>
	create public/dispatch.fcgi<br>
	create public/404.html<br>
	create public/500.html<br>
	create public/index.html<br>
	create public/favicon.ico<br>
	create public/robots.txt<br>
	create public/images/rails.png<br>
	create public/javascripts/prototype.js<br>
	create public/javascripts/effects.js<br>
	create public/javascripts/dragdrop.js<br>
	create public/javascripts/controls.js<br>
	create public/javascripts/application.js<br>
	create doc/README_FOR_APP<br>
	create log/server.log<br>
	create log/production.log<br>
	create log/development.log<br>
	create log/test.log

Start GlassFish for this newly created app using the
following command:

%JRUBY_HOME%\bin\jruby -S glassfish_rails 
	hello<br>

You need to invoke the command from outside the application
directory instead of the natural way (script\server start).
This will be fixed in the future builds. The output of the command looks
like:

<br>
	Sep 13, 2007 1:32:42 PM com.sun.enterprise.v3.services.impl.GrizzlyAdapter 
	postConstruct<br>
	INFO: Listening on port 8080<br>
	Sep 13, 2007 1:32:42 PM 
	com.sun.enterprise.v3.services.impl.DeploymentService postConstruct<br>
	INFO: Supported containers : jruby,web,php,phobos<br>
	Sep 13, 2007 1:32:43 PM com.sun.grizzly.standalone.StaticResourcesAdapter 
	&lt;init&gt;<br>
	INFO: New Servicing page from: C:\workarea\samples\rails\hello\public<br>
	C:/jruby-1.0.1/lib/ruby/gems/1.8/gems/actionmailer-1.3.3/lib/action_mail<br>
	er.rb:49 warning: already initialized constant MAX_LINE_LEN<br>
	Sep 13, 2007 1:32:51 PM com.sun.enterprise.v3.server.AppServerStartup run<br>
	INFO: Glassfish v3 started in 8996 ms

Now you can view the default GlassFish web page at "http://localhost:8080".

This verifies the basic installation of the GlassFish gem. Lets
add a simple controller to our application.

Add a controller to the application by changing to the directory
"hello" and giving the command:

jruby script\generate controller say hello

The output of the
command looks like:

exists app/controllers/<br>
	exists app/helpers/<br>
	create app/views/say<br>
	exists test/functional/<br>
	create app/controllers/say_controller.rb<br>
	create test/functional/say_controller_test.rb<br>
	create app/helpers/say_helper.rb<br>
	create app/views/say/hello.rhtml

In hello\app\views\say directory, edit "hello.rhtml"
such that it looks like:

&lt;h1&gt;Say#hello&lt;/h1&gt;<br>
	&lt;p&gt;Find me in app/views/say/hello.rhtml&lt;/p&gt;<br>
	&lt;%= @hello_string %&gt;

In hello\app\controllers directory, edit "say_controller.rb"
such that it looks like:

class SayController &lt; ApplicationController<br>
	&nbsp; def hello<br>
	&nbsp;&nbsp;&nbsp; @hello_string = &quot;Hello from Controller!&quot;<br>
	&nbsp; end<br>
	end

The page is now accessible at "http://localhost:8080/hello/say/hello".

This is hosted using GlassFish. Of course, the same application can be
deployed on WEBrick by giving the command:

jruby script\server webrick start

Try your applications on GlasFish gem and let us know by leaving a comment on
this blog or sending an email to
users@glassfish or posting to

GlassFish forum.

You can also download GlassFish V3 standalone builds from
here.
The instructions to deploy a Rails application on GlassFish V3 are available
here
and on V2
here.

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