1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
#
# Copyright (c) 2006, 2007 Canonical
#
# Written by Gustavo Niemeyer <gustavo@niemeyer.net>
#
# This file is part of Storm Object Relational Mapper.
#
# Storm is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation; either version 2.1 of
# the License, or (at your option) any later version.
#
# Storm 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
from contextlib import contextmanager
import sys
class StormError(Exception):
pass
class CompileError(StormError):
pass
class NoTableError(CompileError):
pass
class ExprError(StormError):
pass
class NoneError(StormError):
pass
class PropertyPathError(StormError):
pass
class ClassInfoError(StormError):
pass
class URIError(StormError):
pass
class ClosedError(StormError):
pass
class FeatureError(StormError):
pass
class DatabaseModuleError(StormError):
pass
class StoreError(StormError):
pass
class NoStoreError(StormError):
pass
class WrongStoreError(StoreError):
pass
class NotFlushedError(StoreError):
pass
class OrderLoopError(StoreError):
pass
class NotOneError(StoreError):
pass
class UnorderedError(StoreError):
pass
class LostObjectError(StoreError):
pass
class Error(StormError):
pass
class Warning(StormError):
pass
class InterfaceError(Error):
pass
class DatabaseError(Error):
pass
class InternalError(DatabaseError):
pass
class OperationalError(DatabaseError):
pass
class ProgrammingError(DatabaseError):
pass
class IntegrityError(DatabaseError):
pass
class DataError(DatabaseError):
pass
class NotSupportedError(DatabaseError):
pass
class DisconnectionError(OperationalError):
pass
class TimeoutError(StormError):
"""Raised by timeout tracers when remining time is over."""
def __init__(self, statement, params, message=None):
self.statement = statement
self.params = params
self.message = message
def __str__(self):
return ', '.join(
[repr(element) for element in
(self.message, self.statement, self.params)
if element is not None])
class ConnectionBlockedError(StormError):
"""Raised when an attempt is made to use a blocked connection."""
# More generic exceptions must come later. For convenience, use the order
# of definition above and then reverse it.
_wrapped_exception_types = tuple(reversed((
Error,
Warning,
InterfaceError,
DatabaseError,
InternalError,
OperationalError,
ProgrammingError,
IntegrityError,
DataError,
NotSupportedError,
)))
@contextmanager
def wrap_exceptions(database):
"""Context manager that re-raises DB exceptions as StormError instances."""
try:
yield
except Exception as e:
module = database._exception_module
if module is None:
# This backend does not support re-raising database exceptions.
raise
for wrapper_type in _wrapped_exception_types:
dbapi_type = getattr(module, wrapper_type.__name__, None)
if (dbapi_type is not None and
isinstance(dbapi_type, type) and
isinstance(e, dbapi_type)):
wrapped = database._wrap_exception(wrapper_type, e)
tb = sys.exc_info()[2]
try:
raise wrapped.with_traceback(tb) from e
finally:
# Avoid traceback reference cycles.
del wrapped, tb
raise
|