Jruby/Vert.x, Setup issue - jruby

Question

I just recently learned about Vert.x and would like to try it out but I am running into some issues.
I can get a server up written in javascript but cannot get the ruby (jruby) version to run.
May 04, 2012 1:50:57 PM org.vertx.java.core.logging.impl.JULLogDelegate error
SEVERE: backtrace is
/home/curtis/.rvm/rubies/jruby-1.6.6/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in
require'
/home/curtis/.rvm/gems/ruby-1.9.3-p125/gems/json-1.6.6/lib/json/ext.rb:13:in
Ext'
/home/curtis/.rvm/gems/ruby-1.9.3-p125/gems/json-1.6.6/lib/json/ext.rb:12:in
JSON'
/home/curtis/.rvm/gems/ruby-1.9.3-p125/gems/json-1.6.6/lib/json/ext.rb:9:in
(root)'
/home/curtis/.rvm/gems/ruby-1.9.3-p125/gems/json-1.6.6/lib/json/ext.rb:36:in
require'
/home/curtis/.rvm/gems/ruby-1.9.3-p125/gems/json-1.6.6/lib/json.rb:58:in
JSON'
/home/curtis/.rvm/gems/ruby-1.9.3-p125/gems/json-1.6.6/lib/json.rb:54:in
(root)'
/home/curtis/.rvm/gems/ruby-1.9.3-p125/gems/json-1.6.6/lib/json.rb:59:in
require'
/home/curtis/src-files/vert.x-1.0.beta11/bin/../lib/ruby/core/event_bus.rb:16:in
(root)'
/home/curtis/src-files/vert.x-1.0.beta11/bin/../lib/ruby/core/event_bus.rb:26:in
(root)'
/home/curtis/src-files/vert.x-1.0.beta11/bin/../lib/ruby/vertx.rb:1:in
`(root)'
This is what happens when I try to simply run the webapp example located in the vert.x-1.0.beta11/examples/ruby/webapp directory. I do have Jruby installed (through rvm)
$ jruby-1.6.6 -v jruby 1.6.6 (ruby-1.8.7-p357) (2012-01-30 5673572)
(OpenJDK Client VM 1.7.0_147-icedtea) [linux-i386-java]
I also have the reccomended JDK/JRE version installed. With the correct paths
.bashrc (bottom)
PATH=$PATH$HOME/.rvm/bin:$HOME/src-files/vert.x-1.0.beta11/bin:/usr/lib/jvm/java-1.7.0-openjdk-i386
I am running into a brick wall sort of, the error messages either don't help much or lead me to believe there is simply a bug in vert.x or jruby.
Advice please?
JRUBY_HOME=$HOME/.rvm/rubies/jruby-1.6.6

Answer 1

Make sure you have json gem installed, it's a prerequisite for the running the ruby version as stated on the vert.x website. Since you're using rvm you can switch to jruby, rvm use [jruby-version] if you've not already and try searching for the json gem as shown below.
gem search json
What is the result when you issue the command above. If you didn't get any response, you can get it installed in your jruby by using this command,
jruby -S gem install json
On the lighter side you should also install yard gem if you want to build the ruby API doc. Hope this helps.

Answer 2

Is the PATH line in your .bashrc just as you wrote here? If so, you need a slash in between $PATH and $HOME. Also, I think rvm likes to have the rvm sourcing line as the last thing in .bashrc, like the following:
# RVM -- don't put anything after this.
[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm"
PATH=$PATH:$HOME/.rvm/bin # Add RVM to PATH for scripting