Recipe snippet to join a host to AD via Powershell using Chef (Chef::Mixin::PowershellOut)

gistfile1.txt

  #
  # set this up for reboot should we join domain successfully 
  #
  windows_reboot 5 do
    reason 'Reboot after joining AD'
    action :nothing
  end

  # 
  # import mixin powershellout here
  # also, make sure that Powershell cookbook is on active runlist for node
  #
  ::Chef::Recipe.send(:include, Chef::Mixin::PowershellOut)
  
  
  ########################################################################################  
  # put the powershell script in here between the ruby heredoc string thingies
  # ref: http://www.ruby-doc.org/docs/ruby-doc-bundle/Manual/man-1.4/syntax.html#here_doc
  #
  script =<<-'EOF'
  $exitVal=0;
  function addComputer { param([string]$username, [string]$password, [string]$domain)
       try {
          if ((gwmi win32_computersystem).partofdomain -eq $true) {
              # arguably here, I would check if it is the RIGHT domain... next rev...
              # $domain = [System.DirectoryServices.ActiveDirectory.Domain]::GetCurrentDomain()
              # $domainName = $domain.name
              # < compare with passed in value >
              $message = \"The system is joined to the domain\";
              $exitVal=2;
          }
          else {
              add-computer -domain $domain -credential (New-Object System.Management.Automation.PSCredential ($username, (ConvertTo-SecureString $password -AsPlainText -Force))) -passthru -verbose
              $message = \"computer joined to domain\";
              $exitVal=3;
          }
       }
       catch
       {
        $message = \"Join Error - \";
        $message += $_;
        $exitVal=1;
       }
       write-host $message;
       exit $exitVal;
  }
  # this next line uses ruby 
  addComputer #{node['ad']['user']} #{node['ad']['pwd']} #{node['ad']['domain']}
EOF
########################################################################################
#
#
  result = powershell_out(script)

  Chef::Log.debug("powershell exit #{result.exitstatus}")
  Chef::Log.debug("powershell error #{result.stderr}")
  Chef::Log.debug("powershell stdout #{result.stdout}")

  # same as shell_out
  if result.exitstatus == 2
    Chef::Log.debug("Already part of domain: #{result.stdout}")
  elsif result.exitstatus == 3
    Chef::Log.debug("Joined domain: #{result.stdout}")
    # reboot if joining domain
    notifies :request, 'windows_reboot[5]', :delayed
  else
    Chef::Log.error("Domain join fail: #{result.stdout}")
    # any other actions here?  maybe flag the node?
  end