Contributors : Alex Suraci, Raja Rao

Problem

On some Mac OSX releases the stock ruby installed causes vmc client tool to fail emitting following error.  This is due to a library (used by vmc) incompatibility with the packaged ruby that comes with OSX.

For example in Mac OSX Lion, the stock ruby is 1.8.7 with patchlevel 249

$ ruby --version
ruby 1.8.7 (2010-01-10 patchlevel 249) [universal-darwin11.0]

And the error shows up during vmc transaction as 

$ vmc push      
Would you like to deploy from the current directory? [Yn]: The input stream is exhausted.
/Library/Ruby/Gems/1.8/gems/highline-1.6.2/lib/highline.rb:608:in `get_line'
/Library/Ruby/Gems/1.8/gems/highline-1.6.2/lib/highline.rb:629:in `get_response'
/Library/Ruby/Gems/1.8/gems/highline-1.6.2/lib/highline.rb:216:in `ask'
/Library/Ruby/Gems/1.8/gems/vmc-0.3.12/lib/cli/commands/apps.rb:370:in `push'
/Library/Ruby/Gems/1.8/gems/vmc-0.3.12/lib/cli/runner.rb:428:in `send'
/Library/Ruby/Gems/1.8/gems/vmc-0.3.12/lib/cli/runner.rb:428:in `run'
/Library/Ruby/Gems/1.8/gems/vmc-0.3.12/lib/cli/runner.rb:14:in `run'
/Library/Ruby/Gems/1.8/gems/vmc-0.3.12/bin/vmc:5
/usr/bin/vmc:19:in `load'
/usr/bin/vmc:19

Solution

Solution to this problem is to install RVM (Ruby Version Manager) and install and use 1.8.7 (or 1.9.2).  Typically higher patchlevels will get installed.  But please note that even if you install the same patchlevel as the stock ruby the problem will be solved.  

A quick guide to installing RVM 

# Ruby Version Manager
[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm"

$ rvm install 1.9.2
$ rvm use 1.9.2
$ gem install vmc 

Sample Use 

Here is a transcript using rvm installed ruby. 

$ rvm use 1.8.7-p249
Using /Users/Alex/.rvm/gems/ruby-1.8.7-p249

$ ruby --version
ruby 1.8.7 (2010-01-10 patchlevel 249) [i686-darwin11.0.0]

$ vmc push
Would you like to deploy from the current directory? [Yn]: 
Application Name: hello-sinatra
Application Deployed URL: 'hello-sinatra.cloudfoundry.com'? hello-sinatra-alexsuraci.cloudfoundry.com
Detected a Sinatra Application, is this correct? [Yn]: 
Memory Reservation [Default:128M] (64M, 128M, 256M, 512M or 1G) 
Creating Application: OK
Would you like to bind any services to 'hello-sinatra'? [yN]: 
Uploading Application:
  Checking for available resources: OK
  Packing application: OK
  Uploading (2K): OK   
Push Status: OK
Staging Application: OK                                                         
Starting Application: OK