routefs/examples/pyhesiodfs.py

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