system/TestMapper.py

   1 #
   2 # Thierry Parmentelat - INRIA Sophia Antipolis
   3 #
   4 # mapper class
   5 #
   6 # this works on a spec as defined in a config file
   7 # and allows to remap various fields, typically to another testbox
   8 # see an example in config_onelab_testbox32.py
   9 #
  10
  11 import re
  12 import utils
  13
  14 class TestMapper:
  15
  16     def __init__ (self,plcs,mapper,options):
  17         self.plcs=plcs
  18         self.mapper=mapper
  19         self.options=options
  20
  21     @staticmethod
  22     def match (name,key):
  23         key=key.replace("*",".*")
  24         return re.compile(key).match(name)
  25
  26     @staticmethod
  27     def plc_name (plc):
  28         return plc['name']
  29
  30     @staticmethod
  31     def node_name (node):
  32         return node['node_fields']['hostname']
  33
  34     def apply_first_map (self, type, name, obj, maplist):
  35         for (map_pattern,rename_dict) in maplist:
  36             if TestMapper.match (name,map_pattern):
  37                 utils.header("TestMapper/%s : applying match key %s on plc %s"%(type,map_pattern,name))
  38                 for (k,v) in rename_dict.iteritems():
  39                     # apply : separator
  40                     path=k.split(':')
  41                     # step down but last step in path
  42                     o=obj
  43                     for step in path[:-1]:
  44                         if not o.has_key(step):
  45                             utils.header ("WARNING : cannot apply step %s in path %s on %s %s"%(
  46                                     step,path,type,name))
  47                             return
  48                         o=obj[step]
  49                     # last step is the one for side-effect
  50                     step=path[-1]
  51                     if not o.has_key(step):
  52                         utils.header ("WARNING : cannot apply step %s in path %s on %s %s"%(
  53                                 step,path,type,name))
  54                         return
  55                     # apply formatting if found
  56                     if v.find('%s')>=0:
  57                         v=v%obj[k]
  58                     if self.options.verbose:
  59                         utils.header("mapping %s->%s towards %s"%(name,k,v))
  60                     o[step]=v
  61                 # only apply first rule
  62                 return
  63
  64     def map (self):
  65
  66         plc_maps = self.mapper['plc']
  67
  68         for plc in self.plcs:
  69             name=TestMapper.plc_name(plc)
  70             self.apply_first_map ('plc',name,plc,plc_maps)
  71
  72             node_maps = self.mapper['node']
  73
  74             for site in plc['sites']:
  75                 for node in site['nodes']:
  76                     nodename = TestMapper.node_name(node)
  77                     self.apply_first_map('node',nodename,node,node_maps)
  78
  79         return self.plcs
  80
  81