Class: OsCtld::ContainerControl::Commands::Runscript::Frontend

Inherits:
Frontend
  • Object
show all
Includes:
Utils::Runscript::Frontend
Defined in:
lib/osctld/container_control/commands/runscript.rb

Instance Attribute Summary

Attributes inherited from Frontend

#command_class, #ct

Instance Method Summary collapse

Methods included from Utils::Runscript::Frontend

#add_network_opts, #cleanup_init_script, #init_script, #unlink_file

Methods inherited from Frontend

#exec_runner, #fork_runner, #initialize

Constructor Details

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

Instance Method Details

#copy_script(src, stdin) ⇒ Object (protected) 



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# File 'lib/osctld/container_control/commands/runscript.rb', line 77

def copy_script(src, stdin)
  script = Tempfile.create(['.runscript', '.sh'], ct.get_run_conf.rootfs)
  script.chmod(0o500)

  if src.nil?
    IO.copy_stream(stdin, script)
    stdin.close
  else
    File.open(src, 'r') { |f| IO.copy_stream(f, script) }
  end

  script.close
  script
end

#execute(opts) ⇒ Integer

Returns exit status.

Parameters:

  • opts (Hash)

Options Hash (opts):

  • :script (String, nil) —

    path to the script on the host or nil

  • :args (Array<String>) —

    script arguments

  • :stdin (IO)
  • :stdout (IO)
  • :stderr (IO)
  • :run (Boolean) —

    run the container if it is stopped?

  • :network (Boolean) —

    setup network if the container is run?

Returns:

  • (Integer) —

    exit status



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# File 'lib/osctld/container_control/commands/runscript.rb', line 27

def execute(opts)
  runner_opts = {
    args: opts[:args]
  }

  mode =
    if ct.running?
      :running
    elsif !ct.running? && opts[:run] && opts[:network]
      :run_network
    elsif !ct.running? && opts[:run]
      :run
    else
      raise ContainerControl::Error, 'container not running'
    end

  add_network_opts(runner_opts) if opts[:network]

  script = copy_script(opts[:script], opts[:stdin])
  runner_opts[:script] = File.join('/', File.basename(script.path))

  if %i[run run_network].include?(mode)
    ct.ensure_run_conf

    # Remove any left-over temporary mounts
    ct.mounts.prune

    # Pre-start distconfig hook
    DistConfig.run(ct.run_conf, :pre_start)
  end

  ret = exec_runner(
    args: [mode, runner_opts],
    stdin: opts[:script].nil? ? nil : opts[:stdin],
    stdout: opts[:stdout],
    stderr: opts[:stderr],
    reset_subtree_control: mode != :running
  )

  ret.ok? ? ret.data : ret
ensure
  if script
    script.close
    unlink_file(script.path)
  end
  cleanup_init_script
end