Class: OsCtld::ContainerControl::Commands::Mount::Runner

Inherits:
Runner
  • Object
show all
Defined in:
lib/osctld/container_control/commands/mount.rb

Instance Attribute Summary

Attributes inherited from Runner

#ctid, #log_file, #lxc_home, #stderr, #stdin, #stdout, #user_home

Instance Method Summary collapse

Methods inherited from Runner

#error, #initialize, #lxc_ct, #ok, #setup_exec_env, #setup_exec_run_env, #system_path

Constructor Details

This class inherits a constructor from OsCtld::ContainerControl::Runner

Instance Method Details

#execute(opts) ⇒ Object

Parameters:

  • opts (Hash)

Options Hash (opts):

  • :shared_dir (String) —

    path to the host-shared directory

  • :src (String) —

    directory inside ‘:shared_dir` to relocate

  • :dst (String) —

    target mountpoint



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# File 'lib/osctld/container_control/commands/mount.rb', line 26

def execute(opts)
  ct = lxc_ct
  r, w = IO.pipe

  pid = ct.attach(stdout: w) do
    r.close

    begin
      src = File.join(opts[:shared_dir], opts[:src])

      if !Dir.exist?(opts[:shared_dir])
        puts "error:Shared dir not found at: #{opts[:shared_dir]}"

      elsif !Dir.exist?(src)
        puts "error:Source directory not found at: #{src}"

      else
        FileUtils.mkpath(opts[:dst])
        sys = OsCtl::Lib::Sys.new
        sys.move_mount(src, opts[:dst])
        puts 'ok:done'
      end
    rescue StandardError => e
      puts "error:Exception (#{e.class}): #{e.message}"
    ensure
      $stdout.flush
    end
  end

  w.close

  line = r.readline
  Process.wait(pid)
  r.close
  log(:warn, ct, "Mounter exited with #{$?.exitstatus}") if $?.exitstatus != 0

  i = line.index(':')
  return error("invalid return value: #{line.inspect}") unless i

  status = line[0..i - 1]
  msg = line[i + 1..]

  if status == 'ok'
    ok
  else
    error(msg)
  end
end