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
|
# 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.
import functools
from webob import exc
from ironic.common.i18n import _
@functools.total_ordering
class Version(object):
"""API Version object."""
string = 'X-OpenStack-Ironic-API-Version'
"""HTTP Header string carrying the requested version"""
min_string = 'X-OpenStack-Ironic-API-Minimum-Version'
"""HTTP response header"""
max_string = 'X-OpenStack-Ironic-API-Maximum-Version'
"""HTTP response header"""
def __init__(self, headers, default_version, latest_version):
"""Create an API Version object from the supplied headers.
:param headers: webob headers
:param default_version: version to use if not specified in headers
:param latest_version: version to use if latest is requested
:raises: webob.HTTPNotAcceptable
"""
(self.major, self.minor) = Version.parse_headers(
headers, default_version, latest_version)
def __repr__(self):
return '%s.%s' % (self.major, self.minor)
@staticmethod
def parse_headers(headers, default_version, latest_version):
"""Determine the API version requested based on the headers supplied.
:param headers: webob headers
:param default_version: version to use if not specified in headers
:param latest_version: version to use if latest is requested
:returns: a tuple of (major, minor) version numbers
:raises: webob.HTTPNotAcceptable
"""
version_str = headers.get(Version.string, default_version)
if version_str.lower() == 'latest':
parse_str = latest_version
else:
parse_str = version_str
try:
version = tuple(int(i) for i in parse_str.split('.'))
except ValueError:
version = ()
if len(version) != 2:
raise exc.HTTPNotAcceptable(_(
"Invalid value for %s header") % Version.string)
return version
def __gt__(self, other):
return (self.major, self.minor) > (other.major, other.minor)
def __eq__(self, other):
return (self.major, self.minor) == (other.major, other.minor)
def __ne__(self, other):
return not self.__eq__(other)
|
