class Vagrant::LXC::Action::FetchIpWithLxcAttach

Public Class Methods

new(app, env) click to toggle source
# File lib/vagrant-lxc/action/fetch_ip_with_lxc_attach.rb, line 8
def initialize(app, env)
  @app    = app
  @logger = Log4r::Logger.new("vagrant::lxc::action::fetch_ip_with_lxc_attach")
end

Public Instance Methods

assigned_ip(env) click to toggle source
# File lib/vagrant-lxc/action/fetch_ip_with_lxc_attach.rb, line 21
def assigned_ip(env)
  driver = env[:machine].provider.driver
  ip = ''
  retryable(:on => LXC::Errors::ExecuteError, :tries => 10, :sleep => 3) do
    unless ip = get_container_ip_from_ip_addr(driver)
      # retry
      raise LXC::Errors::ExecuteError, :command => "lxc-attach"
    end
  end
  ip
end
call(env) click to toggle source
# File lib/vagrant-lxc/action/fetch_ip_with_lxc_attach.rb, line 13
def call(env)
  env[:machine_ip] ||= assigned_ip(env)
rescue LXC::Errors::NamespacesNotSupported
  @logger.info 'The `lxc-attach` command available does not support the --namespaces parameter, falling back to dnsmasq leases to fetch container ip'
ensure
  @app.call(env)
end
get_container_ip_from_ip_addr(driver) click to toggle source

From: github.com/lxc/lxc/blob/staging/src/python-lxc/lxc/__init__.py#L371-L385

# File lib/vagrant-lxc/action/fetch_ip_with_lxc_attach.rb, line 34
def get_container_ip_from_ip_addr(driver)
  output = driver.attach '/sbin/ip', '-4', 'addr', 'show', 'scope', 'global', 'eth0', namespaces: ['network', 'mount']
  if output =~ /^\s+inet ([0-9.]+)\/[0-9]+\s+/
    return $1.to_s
  end
end