145 lines
3.9 KiB
Ruby
145 lines
3.9 KiB
Ruby
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 Driver
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class CLI
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attr_accessor :name
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class TransitionBlockNotProvided < RuntimeError; end
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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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def initialize(name = nil)
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@name = name
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@logger = Log4r::Logger.new("vagrant::provider::lxc::container::cli")
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end
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def list
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run(:ls).split(/\s+/).uniq
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end
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def version
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if run(:version) =~ /lxc version:\s+(.+)\s*$/
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$1.downcase
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else
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# TODO: Raise an user friendly error
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raise 'Unable to parse lxc version!'
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end
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end
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def state
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if @name && run(:info, '--name', @name) =~ /^state:[^A-Z]+([A-Z]+)$/
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$1.downcase.to_sym
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elsif @name
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:unknown
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end
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end
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def create(template, template_opts = {})
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extra = template_opts.to_a.flatten
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extra.unshift '--' unless extra.empty?
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run :create,
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'--template', template,
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'--name', @name,
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*extra
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end
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def destroy
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run :destroy, '--name', @name
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end
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def start(overrides = [], extra_opts = [])
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options = overrides.map { |key, value| ["-s", "lxc.#{key}=#{value}"] }.flatten
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options += extra_opts if extra_opts
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run :start, '-d', '--name', @name, *options
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end
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def shutdown
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run :shutdown, '--name', @name
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end
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def attach(*cmd)
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cmd = ['--'] + cmd
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if cmd.last.is_a?(Hash)
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opts = cmd.pop
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namespaces = Array(opts[:namespaces]).map(&:upcase).join('|')
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extra = ['--namespaces', namespaces] if namespaces
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end
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run :attach, '--name', @name, *((extra || []) + cmd)
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end
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def transition_to(state, &block)
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raise TransitionBlockNotProvided unless block_given?
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yield self
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run :wait, '--name', @name, '--state', state.to_s.upcase
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end
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private
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def run(command, *args)
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execute('sudo', "lxc-#{command}", *args)
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end
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# TODO: Review code below this line, it was pretty much a copy and
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# paste from VirtualBox base driver and has no tests
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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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sleep = opts.fetch(:sleep, 1)
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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 => sleep) 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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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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end
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