Class: VagrantPlugins::XenServer::Action::DownloadXVA

Inherits:
Object
  • Object
show all
Defined in:
lib/vagrant-xenserver/action/download_xva.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, env) ⇒ DownloadXVA

Returns a new instance of DownloadXVA.



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# File 'lib/vagrant-xenserver/action/download_xva.rb', line 14

def initialize(app, env)
  @app = app
  @logger = Log4r::Logger.new("vagrant::xenserver::actions::download_xva")
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/vagrant-xenserver/action/download_xva.rb', line 19

def call(env)
  xva_url = env[:machine].provider_config.xva_url

  box_name = env[:machine].box.name.to_s
  box_version = env[:machine].box.version.to_s

  @logger.info("xva_url="+xva_url.to_s)
  # Check whether we've already downloaded a VM from this URL
  # When we do, we set an other_config key 'xva_url', so we
  # can just scan through the VMs looking for it.

  template = nil

  Action.getlock.synchronize do
    templates = env[:xc].VM.get_all_records_where("field \"is_a_template\"=\"true\" and field \"is_a_snapshot\"=\"false\"")
    template = templates.detect { |vm,vmr|
      vmr["other_config"]["box_name"] == box_name &&
        vmr["other_config"]["box_version"] == box_version
    }

    @logger.info("template="+template.to_s)

    if template.nil? && (not xva_url.nil?)
      # No template, let's download it.
      pool=env[:xc].pool.get_all
      default_sr=env[:xc].pool.get_default_SR(pool[0])

      env[:ui].output("Downloading XVA. This may take some time. Source URL: "+xva_url)
      task = env[:xc].Async.VM.import(xva_url, default_sr, false, false)

      begin
        sleep(2.0)
        task_status = env[:xc].task.get_status(task)
        task_progress = env[:xc].task.get_progress(task) * 100.0
        output = "Progress: #{task_progress.round(0)}%"
        env[:ui].clear_line
        env[:ui].detail(output, new_line: false)
      end while task_status == "pending"

      env[:ui].clear_line

      if task_status != "success"
     # Task failed - let's find out why:
       error_list = env[:xc].task.get_error_info(task)
        MyUtil::Exnhandler.handle("Async.VM.import", error_list)
      end

      task_result = env[:xc].task.get_result(task)

      doc = REXML::Document.new(task_result)

      @logger.debug("task_result=\"#{task_result}\"")
      template_ref = doc.elements['value/array/data/value'].text

      # Make sure it's really a template, and add the xva_url to other_config:
      env[:xc].VM.set_is_a_template(template_ref,true)
      env[:xc].VM.add_to_other_config(template_ref,"xva_url",xva_url)
      env[:xc].VM.add_to_other_config(template_ref,"box_name",box_name)
      env[:xc].VM.add_to_other_config(template_ref,"box_version",box_version)   

    # Hackity hack: HVM booting guests don't need to set the bootable flag
    # on their VBDs, but PV do. Let's set bootable=true on VBD device=0
    # just in case.

      vbds = env[:xc].VM.get_VBDs(template_ref)
      vbds.each { |vbd|
        if env[:xc].VBD.get_userdevice(vbd) == "0"
          env[:xc].VBD.set_bootable(vbd, true)
        end
      }
      env[:template] = template_ref
    else
      (template_ref, template_rec) = template
      env[:template] = template_ref
    end
  end

  @app.call(env)
end