default.rb

i = gem_package "sys-proctable" do
  action :nothing
end
i.run_action(:install)

require 'rubygems'
Gem.clear_paths
require 'sys/proctable'

Rackspace.is_proc("deployment.*sh", 300)

error

[Tue, 04 Jan 2011 22:13:10 +0000] ERROR: Re-raising exception: NameError - uninitialized constant Sys
/tmp/chef-solo/cookbooks/rackspace/libraries/proctable.rb:27:in `getProcPid'
  /tmp/chef-solo/cookbooks/rackspace/libraries/proctable.rb:48:in `is_proc'
  /tmp/chef-solo/cookbooks/rackspace/recipes/mckick.rb:16:in `from_file'
  /opt/ruby/lib/ruby/gems/chef-0.9.8/lib/chef/mixin/from_file.rb:30:in `instance_eval'
  /opt/ruby/lib/ruby/gems/chef-0.9.8/lib/chef/mixin/from_file.rb:30:in `from_file'
  /opt/ruby/lib/ruby/gems/chef-0.9.8/lib/chef/cookbook_version.rb:337:in `load_recipe'
  /opt/ruby/lib/ruby/gems/chef-0.9.8/lib/chef/mixin/language_include_recipe.rb:40:in `block in include_recipe'
  /opt/ruby/lib/ruby/gems/chef-0.9.8/lib/chef/mixin/language_include_recipe.rb:27:in `each'
  /opt/ruby/lib/ruby/gems/chef-0.9.8/lib/chef/mixin/language_include_recipe.rb:27:in `include_recipe'
  /opt/ruby/lib/ruby/gems/chef-0.9.8/lib/chef/run_context.rb:94:in `block in load'
  /opt/ruby/lib/ruby/gems/chef-0.9.8/lib/chef/run_context.rb:91:in `each'
  /opt/ruby/lib/ruby/gems/chef-0.9.8/lib/chef/run_context.rb:91:in `load'
  /opt/ruby/lib/ruby/gems/chef-0.9.8/lib/chef/run_context.rb:55:in `initialize'
  /opt/ruby/lib/ruby/gems/chef-0.9.8/lib/chef/client.rb:84:in `new'
  /opt/ruby/lib/ruby/gems/chef-0.9.8/lib/chef/client.rb:84:in `run'
  /opt/ruby/lib/ruby/gems/chef-0.9.8/lib/chef/application/solo.rb:191:in `block in run_application'
  /opt/ruby/lib/ruby/gems/chef-0.9.8/lib/chef/application/solo.rb:181:in `loop'
  /opt/ruby/lib/ruby/gems/chef-0.9.8/lib/chef/application/solo.rb:181:in `run_application'
  /opt/ruby/lib/ruby/gems/chef-0.9.8/lib/chef/application.rb:62:in `run'
  /opt/ruby/lib/ruby/gems/chef-0.9.8/bin/chef-solo:25:in `<top (required)>'
  /opt/ruby/lib/ruby/bin/chef-solo:19:in `load'
  /opt/ruby/lib/ruby/bin/chef-solo:19:in `<main>'

library_proctable.rb

begin
  require 'sys/proctable'
rescue LoadError
  Chef::Log.warn("Missing gem 'sys-proctable'")
end

require 'timeout'

module Rackspace
  def self.getProcPid(name)
    Sys::ProcTable.ps do |p|
      if /#{name}/ =~ p.cmdline
        return p.pid
      end
    end
  end

  def self.wait_on_proc(name, timeout_sec = 60)
    begin
      Timeout::timeout(params[:timeout_sec]) do
        while getProcPid(name)
          sleep(5)
        end
      end
    rescue
      Chef::Log.warn("Process #{name} is taking too long, move along!")
      #Chef::Application.fatal!("Process #{params[:name]} is taking too long, I quit!", -8008)
    end
  end

  def self.is_proc(name, timeout_sec = 60)
    if getProcPid(name)
      Chef::Log.info("libcloud deployment script running.")
      Chef::Log.info("Sleeping for up to #{timeout_sec} seconds...")
      wait_on_proc(name,timeout_sec)
    end
  end
end