source/steps/ConfirmInstallWithUser.py

   1 from Exceptions import *
   2
   3 welcome_message= \
   4 """
   5 ********************************************************************************
   6 *                                                                              *
   7 *                             Welcome to PlanetLab                             *
   8 *                             ~~~~~~~~~~~~~~~~~~~~                             *
   9 *                                                                              *
  10 * The PlanetLab boot CD allows you to automatically install this machine as a  *
  11 * node within the PlanetLab overlay network.                                   *
  12 *                                                                              *
  13 * PlanetLab is a global overlay network for developing and accessing new       *
  14 * network services. Our goal is to grow to 1000 geographically distributed     *
  15 * nodes, connected by a diverse collection of links. Toward this end, we are   *
  16 * putting PlanetLab nodes into edge sites, co-location and routing centers,    *
  17 * and homes (i.e., at the end of DSL lines and cable modems). PlanetLab is     *
  18 * designed to support both short-term experiments and long-running services.   *
  19 * Currently running services include network weather maps, network-embedded    *
  20 * storage, peer-to-peer networks, and content distribution networks.           *
  21 *                                                                              *
  22 * Information on joining PlanetLab available at planet-lab.org/consortium/     *
  23 *                                                                              *
  24 ********************************************************************************
  25
  26 WARNING : Installing PlanetLab will remove any existing operating system and
  27           data from this computer.
  28 """
  29
  30
  31 def Run( vars, log ):
  32     """
  33     Ask the user if we really want to wipe this machine.
  34
  35     Return 1 if the user accept, 0 if the user denied, and
  36     a BootManagerException if anything unexpected occurred.
  37     """
  38
  39     log.write( "\n\nStep: Confirming install with user.\n" )
  40
  41     try:
  42         confirmation= ""
  43         install= 0
  44         print welcome_message
  45
  46         while confirmation not in ("yes","no"):
  47             confirmation= \
  48                 raw_input("Are you sure you wish to continue (yes/no):")
  49         install= confirmation=="yes"
  50     except EOFError, e:
  51         pass
  52     except KeyboardInterrupt, e:
  53         pass
  54
  55     if install:
  56         log.write( "\nUser accepted install.\n" )
  57     else:
  58         log.write( "\nUser canceled install.\n" )
  59
  60     return install