--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sat_pubsub/error.py	Fri Aug 16 12:00:02 2019 +0200
@@ -0,0 +1,152 @@
+#!/usr/bin/python
+#-*- coding: utf-8 -*-
+
+# Copyright (c) 2012-2019 Jérôme Poisson
+# Copyright (c) 2013-2016 Adrien Cossa
+# Copyright (c) 2003-2011 Ralph Meijer
+
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# --
+
+# This program is based on Idavoll (http://idavoll.ik.nu/),
+# originaly written by Ralph Meijer (http://ralphm.net/blog/)
+# It is sublicensed under AGPL v3 (or any later version) as allowed by the original
+# license.
+
+# --
+
+# Here is a copy of the original license:
+
+# Copyright (c) 2003-2011 Ralph Meijer
+
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+class Error(Exception):
+    msg = ''
+
+    def __init__(self, msg=None):
+        self.msg = msg or self.msg
+
+
+    def __str__(self):
+        return self.msg
+
+
+class Deprecated(Exception):
+    pass
+
+
+class NodeNotFound(Error):
+    pass
+
+
+class NodeExists(Error):
+    pass
+
+
+class NotSubscribed(Error):
+    """
+    Entity is not subscribed to this node.
+    """
+
+
+class SubscriptionExists(Error):
+    """
+    There already exists a subscription to this node.
+    """
+
+
+def NotLeafNodeError(Error):
+    """a leaf node is expected but we have a collection"""
+
+
+class Forbidden(Error):
+    pass
+
+
+class NotAuthorized(Error):
+    pass
+
+
+class NotInRoster(Error):
+    pass
+
+
+class ItemNotFound(Error):
+    pass
+
+
+class ItemForbidden(Error):
+    pass
+
+
+class ItemRequired(Error):
+    pass
+
+
+class NoInstantNodes(Error):
+    pass
+
+
+class InvalidConfigurationOption(Error):
+    msg = 'Invalid configuration option'
+
+
+class InvalidConfigurationValue(Error):
+    msg = 'Bad configuration value'
+
+
+class NodeNotPersistent(Error):
+    pass
+
+
+class NoRootNode(Error):
+    pass
+
+
+class NoCallbacks(Error):
+    """
+    There are no callbacks for this node.
+    """
+
+class NoCollections(Error):
+    pass
+
+
+class NoPublishing(Error):
+    """
+    This node does not support publishing.
+    """
+
+class BadAccessTypeError(Error):
+    pass