vagrant-lxc-ng/lib/vagrant-lxc/provider.rb
2014-02-12 01:41:55 -02:00

102 lines
3 KiB
Ruby

require "log4r"
require "vagrant-lxc/action"
require "vagrant-lxc/driver"
require "vagrant-lxc/sudo_wrapper"
module Vagrant
module LXC
class Provider < Vagrant.plugin("2", :provider)
attr_reader :driver
def initialize(machine)
@logger = Log4r::Logger.new("vagrant::provider::lxc")
@machine = machine
ensure_lxc_installed!
machine_id_changed
end
def sudo_wrapper
@shell ||= begin
wrapper = @machine.provider_config.sudo_wrapper
wrapper = Pathname(wrapper).expand_path(@machine.env.root_path).to_s if wrapper
SudoWrapper.new(wrapper)
end
end
def ensure_lxc_installed!
begin
sudo_wrapper.run("which", "lxc-create")
rescue Vagrant::LXC::Errors::ExecuteError
raise Errors::LxcNotInstalled
end
end
# If the machine ID changed, then we need to rebuild our underlying
# container.
def machine_id_changed
id = @machine.id
begin
@logger.debug("Instantiating the container for: #{id.inspect}")
@driver = Driver.new(id, self.sudo_wrapper)
@driver.validate!
rescue Driver::ContainerNotFound
# The container doesn't exist, so we probably have a stale
# ID. Just clear the id out of the machine and reload it.
@logger.debug("Container not found! Clearing saved machine ID and reloading.")
id = nil
retry
end
end
# @see Vagrant::Plugin::V2::Provider#action
def action(name)
# Attempt to get the action method from the Action class if it
# exists, otherwise return nil to show that we don't support the
# given action.
action_method = "action_#{name}"
return LXC::Action.send(action_method) if LXC::Action.respond_to?(action_method)
nil
end
# Returns the SSH info for accessing the Container.
def ssh_info
# If the Container is not created then we cannot possibly SSH into it, so
# we return nil.
return nil if state == :not_created
# Run a custom action called "fetch_ip" which does what it says and puts
# the IP found into the `:machine_ip` key in the environment.
env = @machine.action("fetch_ip")
# If we were not able to identify the container's IP, we return nil
# here and we let Vagrant core deal with it ;)
return nil unless env[:machine_ip]
{
:host => env[:machine_ip],
:port => @machine.config.ssh.guest_port
}
end
def state
state_id = nil
state_id = :not_created if !@driver.container_name
state_id = @driver.state if !state_id
state_id = :unknown if !state_id
short = state_id.to_s.gsub("_", " ")
long = I18n.t("vagrant.commands.status.#{state_id}")
Vagrant::MachineState.new(state_id, short, long)
end
def to_s
id = @machine.id ? @machine.id : "new VM"
"LXC (#{id})"
end
end
end
end