routefs/examples/pyhesiodfs.py

   1 #!/usr/bin/python
   2
   3
   4 import hesiod
   5 from routes import Mapper
   6
   7 import routefs
   8
   9
  10 class PyHesiodFS(routefs.RouteFS):
  11     def __init__(self, *args, **kwargs):
  12         super(PyHesiodFS, self).__init__(*args, **kwargs)
  13         self.fuse_args.add("allow_other", True)
  14
  15         self.cache = {}
  16
  17     def make_map(self):
  18         m = Mapper()
  19         m.connect('/', controller='getList')
  20         m.connect('/README.txt', controller='getReadme')
  21         m.connect('/{action}', controller='getLocker')
  22         return m
  23
  24     def getLocker(self, action, **kwargs):
  25         if action in self.cache:
  26             return routefs.Symlink(self.cache[action])
  27
  28         try:
  29             filsys = hesiod.FilsysLookup(action).filsys[0]
  30             if filsys['type'] == 'AFS':
  31                 self.cache[action] = filsys['location']
  32                 return routefs.Symlink(self.cache[action])
  33         except (TypeError, KeyError, IndexError):
  34             return
  35
  36     def getList(self, **kwargs):
  37         return self.cache.keys() + ['README.txt']
  38
  39     def getReadme(self, **kwargs):
  40         return """
  41 This is the pyHesiodFS FUSE automounter. To access a Hesiod filsys,
  42 just access /mit/name.
  43
  44 If you're using the Finder, try pressing Cmd+Shift+G and then entering
  45 /mit/name
  46 """
  47
  48
  49 if __name__ == '__main__':
  50     routefs.main(PyHesiodFS)