1 files changed, 17 insertions, 1 deletions
diff --git a/ick2/exceptions.py b/ick2/exceptions.py
index 3af7ff0..bd394af 100644
--- a/ick2/exceptions.py
+++ b/ick2/exceptions.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2017-2018  Lars Wirzenius
+# Copyright (C) 2017-2019  Lars Wirzenius
 # 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
@@ -18,12 +18,28 @@ class IckException(Exception):
     pass
 
 
+class NotFound(Exception):
+
+    def __init__(self, kind, name):
+        super().__init__(
+            'Resource {}:{} not found'.format(
+                kind or "unknown", name or "unknown"))
+
+
 class ExistsAlready(IckException):
 
     def __init__(self, name):
         super().__init__('Resource {} already exists'.format(name))
 
 
+class Conflict(IckException):
+
+    def __init__(self, rid, expected, got):
+        super().__init__(
+            'Update conflict for {}: expected revision {}, got {}'.format(
+                rid, expected, got))
+
+
 class BadUpdate(IckException):
 
     def __init__(self, how):