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 import pwd
  12 import routefs
  13 from routes import Mapper
  14
  15 class HomeFS(routefs.RouteFS):
  16     controllers = ['getList', 'getUser']
  17     def __init__(self, *args, **kwargs):
  18         super(HomeFS, self).__init__(*args, **kwargs)
  19         self.cache = {}
  20
  21     @property
  22     def map(self):
  23         m = Mapper()
  24         m.connect('', controller='getList')
  25         m.connect(':action', controller='getUser')
  26         return m
  27
  28     def getUser(self, action, **kwargs):
  29         try:
  30             if action not in self.cache:
  31                 self.cache[action] = pwd.getpwnam(action).pw_dir
  32             return routefs.Symlink(self.cache[action])
  33         except KeyError:
  34             return
  35
  36     def getList(self, **kwargs):
  37         return self.cache.keys()
  38
  39 if __name__ == '__main__':
  40     routefs.main(HomeFS)