python/ovs/db/error.py

   1 # Copyright (c) 2009, 2010 Nicira Networks
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at:
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 import ovs.json
  16
  17 class Error(Exception):
  18     def __init__(self, msg, json=None, tag=None):
  19         Exception.__init__(self)
  20         self.msg = msg
  21         self.json = json
  22         if tag is None:
  23             if json is None:
  24                 self.tag = "ovsdb error"
  25             else:
  26                 self.tag = "syntax error"
  27         else:
  28             self.tag = tag
  29
  30     def __str__(self):
  31         syntax = ""
  32         if self.json is not None:
  33                 syntax = "syntax \"%s\": " % ovs.json.to_string(self.json)
  34         return "%s%s: %s" % (syntax, self.tag, self.msg)