123 lines
3.4 KiB
Ruby
123 lines
3.4 KiB
Ruby
# FIXME: Ruby 1.8 users dont have SecureRandom
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require 'securerandom'
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require 'vagrant/util/retryable'
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require 'vagrant/util/subprocess'
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require "vagrant-lxc/errors"
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module Vagrant
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module LXC
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class Container
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# Include this so we can use `Subprocess` more easily.
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include Vagrant::Util::Retryable
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CONTAINER_STATE_FILE_PATH = '/tmp/vagrant-lxc-container-state-%<id>s'
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def initialize(machine)
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@machine = machine
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@logger = Log4r::Logger.new("vagrant::provider::lxc::container")
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end
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def create
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# FIXME: Ruby 1.8 users dont have SecureRandom
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machine_id = SecureRandom.hex(6)
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log, status = lxc(:create, {'--template' => 'ubuntu-cloud', '--name' => machine_id}, {'-S' => '/home/vagrant/.ssh/id_rsa.pub'})
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machine_id
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end
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def start
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puts 'TODO: Start container'
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update!(:running)
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end
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def halt
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update!(:poweroff)
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end
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def destroy
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puts "TODO: Destroy container"
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File.delete(state_file_path) if state_file_path
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end
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def state
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# TODO: Grab the real machine state here
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read_state_from_file
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end
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private
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def lxc(command, params, extra = {})
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params = params.map { |opt, val| "#{opt}='#{val}'" }
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params << '--' if extra.any?
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# Handles extra options passed to templates when using lxc-create
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params << extra.map { |opt, val| "#{opt} #{val}" }
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execute('sudo', "lxc-#{command}", *params.flatten)
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end
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def update!(state)
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File.open(state_file_path, 'w') { |f| f.print state }
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end
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def read_state_from_file
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if File.exists?(state_file_path)
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File.read(state_file_path).to_sym
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elsif @machine.id
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:unknown
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end
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end
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def state_file_path
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CONTAINER_STATE_FILE_PATH % {id: @machine.id}
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end
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# TODO: Review code below this line, it was pretty much a copy and paste from VirtualBox base driver
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def execute(*command, &block)
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# Get the options hash if it exists
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opts = {}
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opts = command.pop if command.last.is_a?(Hash)
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tries = 0
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tries = 3 if opts[:retryable]
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# Variable to store our execution result
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r = nil
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retryable(:on => LXC::Errors::ExecuteError, :tries => tries, :sleep => 1) do
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# Execute the command
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r = raw(*command, &block)
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# If the command was a failure, then raise an exception that is
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# nicely handled by Vagrant.
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if r.exit_code != 0
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if @interrupted
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@logger.info("Exit code != 0, but interrupted. Ignoring.")
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else
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raise LXC::Errors::ExecuteError, :command => command.inspect
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end
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end
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end
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# Return the output, making sure to replace any Windows-style
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# newlines with Unix-style.
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r.stdout.gsub("\r\n", "\n")
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end
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# Executes a command and returns the raw result object.
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def raw(*command, &block)
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int_callback = lambda do
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@interrupted = true
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@logger.info("Interrupted.")
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end
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# Append in the options for subprocess
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command << { :notify => [:stdout, :stderr] }
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Vagrant::Util::Busy.busy(int_callback) do
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Vagrant::Util::Subprocess.execute(*command, &block)
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end
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end
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end
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end
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end
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