lib/mv/mv_dummy_runner.rb

   1 require 'common/runner'
   2
   3 # Dummy implementation of a {MvRunner}. Its <tt>run()</tt> method will
   4 # tell you what would have been moved, but will not actually perform
   5 # the operation.
   6 #
   7 class MvDummyRunner
   8   include Runner
   9
  10   # Pretend to move *src* to *dst* with *plugin*. Some "what if"
  11   # information will be output to stdout. This is useful to see if
  12   # there would be (for example) a username collision at *dst* before
  13   # attempting the move in earnest.
  14   #
  15   # @param cfg [Configuration] the configuration options to pass to
  16   #   the *plugin* we're runnning.
  17   #
  18   # @param plugin [Class] plugin class that will perform the move.
  19   #
  20   # @param src [User] the source user to be moved.
  21   #
  22   # @param dst [User] the destination user, to which we will move *src*.
  23   #
  24   def run(cfg, plugin, src, dst)
  25
  26     if src.is_a?(Domain) or dst.is_a?(Domain) then
  27       msg = 'only users can be moved'
  28       raise NotImplementedError.new(msg)
  29     end
  30
  31     # Since we're not actually moving anything, the destination
  32     # description is really only useful for seeing whether or not we'd
  33     # be trying to move in on top of an existing account.
  34     src_description = plugin.describe(src)
  35     dst_description = plugin.describe(dst)
  36
  37     msg  = "Would move user #{src} "
  38
  39     # Only append the extra description if it's useful.
  40     if not src_description.nil? and
  41        not src_description.empty? and
  42        not src_description == src.to_s() then
  43       msg += "(#{src_description}) "
  44     end
  45
  46     msg += "to #{dst}"
  47
  48     # Only append the extra description if it's useful.
  49     if not dst_description.nil? and
  50        not dst_description.empty? and
  51        not dst_description == dst.to_s() then
  52       msg += " (#{dst_description})"
  53     end
  54
  55     msg += "."
  56     report(plugin, msg)
  57   end
  58
  59 end