vagrant-lxc-ng/lib/vagrant-lxc/action/fetch_ip_with_lxc_info.rb
Virgil Dupras aa777653f4 Use lxc-info instead of lxc-attach to retrieve container IP
`lxc-info -iH` to retrieve IP address was not available in early LXC
development but was there at LXC 1.0. Because we've bumped our minimum
LXC requirement to v1.0 recently, we can simplify the IP retrieval
process and also get rid of the `dnsmasq` fallback.
2018-01-13 15:53:28 -05:00

43 lines
1.2 KiB
Ruby

module Vagrant
module LXC
module Action
class FetchIpWithLxcInfo
# Include this so we can use `Subprocess` more easily.
include Vagrant::Util::Retryable
def initialize(app, env)
@app = app
@logger = Log4r::Logger.new("vagrant::lxc::action::fetch_ip_with_lxc_info")
end
def call(env)
env[:machine_ip] ||= assigned_ip(env)
ensure
@app.call(env)
end
def assigned_ip(env)
config = env[:machine].provider_config
fetch_ip_tries = config.fetch_ip_tries
driver = env[:machine].provider.driver
ip = ''
retryable(:on => LXC::Errors::ExecuteError, :tries => fetch_ip_tries, :sleep => 3) do
unless ip = get_container_ip_from_ip_addr(driver)
# retry
raise LXC::Errors::ExecuteError, :command => "lxc-info"
end
end
ip
end
# From: https://github.com/lxc/lxc/blob/staging/src/python-lxc/lxc/__init__.py#L371-L385
def get_container_ip_from_ip_addr(driver)
output = driver.info '-iH'
if output =~ /^([0-9.]+)/
return $1.to_s
end
end
end
end
end
end