routefs/examples/homefs.py

   1 #!/usr/bin/python
   2 """
   3 RouteFS Example: HomeFS
   4
   5 If you work on a system where home directories are on network storage
   6 (i.e. not in /home), mount HomeFS on /home. It's an automounter that
   7 will automatically create symlinks from user -> their homedir whenever
   8 /home/user is accessed in any way.
   9 """
  10
  11
  12 import pwd
  13
  14 from routes import Mapper
  15
  16 import routefs
  17
  18
  19 class HomeFS(routefs.RouteFS):
  20     controllers = ['getList', 'getUser']
  21     def __init__(self, *args, **kwargs):
  22         super(HomeFS, self).__init__(*args, **kwargs)
  23         self.cache = {}
  24
  25     def make_map(self):
  26         m = Mapper()
  27         m.connect('', controller='getList')
  28         m.connect(':action', controller='getUser')
  29         return m
  30
  31     def getUser(self, action, **kwargs):
  32         try:
  33             if action not in self.cache:
  34                 self.cache[action] = pwd.getpwnam(action).pw_dir
  35             return routefs.Symlink(self.cache[action])
  36         except KeyError:
  37             return
  38
  39     def getList(self, **kwargs):
  40         return self.cache.keys()
  41
  42
  43 if __name__ == '__main__':
  44     routefs.main(HomeFS)