Class: VagrantPlugins::ProviderLibvirt::Action::ConnectLibvirt

Inherits:
Object
  • Object
show all
Defined in:
lib/vagrant-libvirt/action/connect_libvirt.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, env) ⇒ ConnectLibvirt

Returns a new instance of ConnectLibvirt.



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# File 'lib/vagrant-libvirt/action/connect_libvirt.rb', line 8

def initialize(app, env)
  @logger = Log4r::Logger.new('vagrant_libvirt::action::connect_libvirt')
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/vagrant-libvirt/action/connect_libvirt.rb', line 13

def call(env)

  # If already connected to libvirt, just use it and don't connect
  # again.
  if ProviderLibvirt.libvirt_connection
    env[:libvirt_compute] = ProviderLibvirt.libvirt_connection
    return @app.call(env)
  end

  # Get config options for libvirt provider.
  config = env[:machine].provider_config

  # Setup connection uri.
  uri = config.driver
  virt_path = case uri
  when 'qemu', 'openvz', 'uml', 'phyp', 'parallels'
    '/system'
  when 'xen', 'esx'
    '/'
  when 'vbox', 'vmwarews', 'hyperv'
    '/session'
  else
    raise "Require specify driver #{uri}"
  end

  if config.connect_via_ssh
    uri << '+ssh://'
    if config.username
      uri << config.username + '@'
    end

    if config.host
      uri << config.host
    else
      uri << 'localhost'
    end
  else
    uri << '://'
    uri << config.host if config.host
  end

  uri << virt_path
  uri << '?no_verify=1'

  if config.id_ssh_key_file
    # set ssh key for access to libvirt host
    home_dir = `echo ${HOME}`.chomp
    uri << "&keyfile=#{home_dir}/.ssh/"+config.id_ssh_key_file
  end

  conn_attr = {}
  conn_attr[:provider] = 'libvirt'
  conn_attr[:libvirt_uri] = uri
  conn_attr[:libvirt_username] = config.username if config.username
  conn_attr[:libvirt_password] = config.password if config.password

  # Setup command for retrieving IP address for newly created machine
  # with some MAC address. Get it from dnsmasq leases table - either
  # /var/lib/libvirt/dnsmasq/*.leases files, or
  # /var/lib/misc/dnsmasq.leases if available.
  ip_command =  "LEASES='/var/lib/libvirt/dnsmasq/*.leases'; "
  ip_command << "[ -f /var/lib/misc/dnsmasq.leases ] && "
  ip_command << "LEASES='/var/lib/misc/dnsmasq.leases'; "
  ip_command << "grep $mac $LEASES | awk '{ print $3 }'"
  conn_attr[:libvirt_ip_command] = ip_command

  @logger.info("Connecting to Libvirt (#{uri}) ...")
  begin
    env[:libvirt_compute] = Fog::Compute.new(conn_attr)
  rescue Fog::Errors::Error => e
    raise Errors::FogLibvirtConnectionError,
      :error_message => e.message
  end
  ProviderLibvirt.libvirt_connection = env[:libvirt_compute]

  @app.call(env)
end