From 743f15e0c72e6c5b51b5543f89ee2533d1d94845 Mon Sep 17 00:00:00 2001
From: Chris Behrens <cbehrens@codestud.com>
Date: Fri, 22 Feb 2013 16:13:27 +0000
Subject: Clean up sqlalchemy exception code

Moves DB exceptions that can be shared between DB implementations into
their own module.

Adds DBDeadlock() exception wrapping.  Nova has its own code for
determining Deadlock and it's better to consolidate it with
DBDuplicateKey checking.

Change-Id: I108bd0da2a14d62e460a997b1472f0b65bfc9b95
---
 openstack/common/db/exception.py | 45 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 openstack/common/db/exception.py

(limited to 'openstack/common/db/exception.py')

diff --git a/openstack/common/db/exception.py b/openstack/common/db/exception.py
new file mode 100644
index 0000000..8588d85
--- /dev/null
+++ b/openstack/common/db/exception.py
@@ -0,0 +1,45 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2010 United States Government as represented by the
+# Administrator of the National Aeronautics and Space Administration.
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+"""DB related custom exceptions."""
+
+from openstack.common.gettextutils import _
+
+
+class DBError(Exception):
+    """Wraps an implementation specific exception."""
+    def __init__(self, inner_exception=None):
+        self.inner_exception = inner_exception
+        super(DBError, self).__init__(str(inner_exception))
+
+
+class DBDuplicateEntry(DBError):
+    """Wraps an implementation specific exception."""
+    def __init__(self, columns=[], inner_exception=None):
+        self.columns = columns
+        super(DBDuplicateEntry, self).__init__(inner_exception)
+
+
+class DBDeadlock(DBError):
+    def __init__(self, inner_exception=None):
+        super(DBDeadlock, self).__init__(inner_exception)
+
+
+class DBInvalidUnicodeParameter(Exception):
+    message = _("Invalid Parameter: "
+                "Unicode is not supported by the current database.")
-- 
cgit