Example #1
0
def _import_module(mod_str):
    try:
        if mod_str.startswith('bin.'):
            imp.load_source(mod_str[4:], os.path.join('bin', mod_str[4:]))
            return sys.modules[mod_str[4:]]
        else:
            return importutils.import_module(mod_str)
    except Exception as e:
        sys.stderr.write("Error importing module %s: %s\n" % (mod_str, str(e)))
        return None
Example #2
0
def _import_module(mod_str):
    try:
        if mod_str.startswith('bin.'):
            imp.load_source(mod_str[4:], os.path.join('bin', mod_str[4:]))
            return sys.modules[mod_str[4:]]
        else:
            return importutils.import_module(mod_str)
    except Exception as e:
        sys.stderr.write("Error importing module %s: %s\n" % (mod_str, str(e)))
        return None
Example #3
0
 def __get_backend(self):
     """Get the actual backend.  May be a module or an instance of
     a class.  Doesn't matter to us.  We do this synchronized as it's
     possible multiple greenthreads started very quickly trying to do
     DB calls and eventlet can switch threads before self.__backend gets
     assigned.
     """
     if self.__backend:
         # Another thread assigned it
         return self.__backend
     backend_name = CONF.database.backend
     self.__use_tpool = CONF.database.use_tpool
     if self.__use_tpool:
         from eventlet import tpool
         self.__tpool = tpool
     # Import the untranslated name if we don't have a
     # mapping.
     backend_path = self.__backend_mapping.get(backend_name,
                                               backend_name)
     backend_mod = importutils.import_module(backend_path)
     self.__backend = backend_mod.get_backend()
     return self.__backend