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
|
##############################################################################
# Copyright (c) 2016 Huawei Technologies Co.,Ltd and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
"""Exceptions for RESTful API."""
import traceback
from dovetail.api import app
from dovetail.api import utils
class HTTPException(Exception):
def __init__(self, message, status_code):
super(HTTPException, self).__init__(message)
self.traceback = traceback.format_exc()
self.status_code = status_code
def to_dict(self):
return {'message': str(self)}
class ItemNotFound(HTTPException):
"""Define the exception for referring non-existing object."""
def __init__(self, message):
super(ItemNotFound, self).__init__(message, 410)
class BadRequest(HTTPException):
"""Define the exception for invalid/missing parameters.
User making a request in invalid state cannot be processed.
"""
def __init__(self, message):
super(BadRequest, self).__init__(message, 400)
class Unauthorized(HTTPException):
"""Define the exception for invalid user login."""
def __init__(self, message):
super(Unauthorized, self).__init__(message, 401)
class UserDisabled(HTTPException):
"""Define the exception for disabled users."""
def __init__(self, message):
super(UserDisabled, self).__init__(message, 403)
class Forbidden(HTTPException):
"""Define the exception for invalid permissions."""
def __init__(self, message):
super(Forbidden, self).__init__(message, 403)
class BadMethod(HTTPException):
"""Define the exception for invoking unsupported methods."""
def __init__(self, message):
super(BadMethod, self).__init__(message, 405)
class ConflictObject(HTTPException):
"""Define the exception for creating an existing object."""
def __init__(self, message):
super(ConflictObject, self).__init__(message, 409)
@app.errorhandler(Exception)
def handle_exception(error):
if hasattr(error, 'to_dict'):
response = error.to_dict()
else:
response = {'message': str(error)}
if app.debug and hasattr(error, 'traceback'):
response['traceback'] = error.traceback
status_code = 400
if hasattr(error, 'status_code'):
status_code = error.status_code
return utils.make_json_response(status_code, response)
|
