vagrant-lxc-ng/lib/vagrant-lxc/sudo_wrapper.rb
2014-04-17 12:56:56 +02:00

76 lines
2.2 KiB
Ruby

module Vagrant
module LXC
class SudoWrapper
# Include this so we can use `Subprocess` more easily.
include Vagrant::Util::Retryable
def initialize(wrapper_path = nil)
@wrapper_path = wrapper_path
@logger = Log4r::Logger.new("vagrant::lxc::sudo_wrapper")
end
def run(*command)
options = command.last.is_a?(Hash) ? command.last : {}
command.unshift @wrapper_path if @wrapper_path && !options[:no_wrapper]
execute *(['sudo'] + command)
end
private
# TODO: Review code below this line, it was pretty much a copy and
# paste from VirtualBox base driver and has no tests
def execute(*command, &block)
# Get the options hash if it exists
opts = {}
opts = command.pop if command.last.is_a?(Hash)
tries = 0
tries = 3 if opts[:retryable]
sleep = opts.fetch(:sleep, 1)
# Variable to store our execution result
r = nil
retryable(:on => LXC::Errors::ExecuteError, :tries => tries, :sleep => sleep) do
# Execute the command
r = raw(*command, &block)
# If the command was a failure, then raise an exception that is
# nicely handled by Vagrant.
if r.exit_code != 0
if @interrupted
@logger.info("Exit code != 0, but interrupted. Ignoring.")
else
raise LXC::Errors::ExecuteError,
command: command.inspect, stderr: r.stderr, stdout: r.stdout
end
end
end
# Return the output, making sure to replace any Windows-style
# newlines with Unix-style.
stdout = r.stdout.gsub("\r\n", "\n")
if opts[:show_stderr]
{ :stdout => stdout, :stderr => r.stderr.gsub("\r\n", "\n") }
else
stdout
end
end
def raw(*command, &block)
int_callback = lambda do
@interrupted = true
@logger.info("Interrupted.")
end
# Append in the options for subprocess
command << { :notify => [:stdout, :stderr] }
Vagrant::Util::Busy.busy(int_callback) do
Vagrant::Util::Subprocess.execute(*command, &block)
end
end
end
end
end