Container Infrastructure Management Service for OpenStack
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# 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.
from webob import exc
from magnum.i18n import _
# NOTE(yuntong): v1.0 is reserved to indicate Kilo's API, but is not presently
# supported by the API service. All changes between Kilo and the
# point where we added microversioning are considered backwards-
# compatible, but are not specifically discoverable at this time.
#
# The v1.1 version indicates this "initial" version as being
# different from Kilo (v1.0), and includes the following changes:
#
# Add details of new api versions here:
#
# For each newly added microversion change, update the API version history
# string below with a one or two line description. Also update
# rest_api_version_history.rst for extra information on microversion.
REST_API_VERSION_HISTORY = """REST API Version History:
* 1.1 - Initial version
* 1.2 - Async bay operations support
* 1.3 - Add bay rollback support
* 1.4 - Add stats API
* 1.5 - Add cluster CA certificate rotation support
* 1.6 - Add quotas API
* 1.7 - Add resize API
"""
BASE_VER = '1.1'
CURRENT_MAX_VER = '1.7'
class Version(object):
"""API Version object."""
string = 'OpenStack-API-Version'
"""HTTP Header string carrying the requested version"""
min_string = 'OpenStack-API-Minimum-Version'
"""HTTP response header"""
max_string = 'OpenStack-API-Maximum-Version'
"""HTTP response header"""
service_string = 'container-infra'
def __init__(self, headers, default_version, latest_version,
from_string=None):
"""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
:param from_string: create the version from string not headers
:raises: webob.HTTPNotAcceptable
"""
if from_string:
(self.major, self.minor) = tuple(int(i)
for i in from_string.split('.'))
else:
(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_hdr = headers.get(Version.string, default_version)
try:
version_service, version_str = version_hdr.split()
except ValueError:
raise exc.HTTPNotAcceptable(_(
"Invalid service type for %s header") % Version.string)
if version_str.lower() == 'latest':
version_service, version_str = latest_version.split()
if version_service != Version.service_string:
raise exc.HTTPNotAcceptable(_(
"Invalid service type for %s header") % Version.string)
try:
version = tuple(int(i) for i in version_str.split('.'))
except ValueError:
version = ()
if len(version) != 2:
raise exc.HTTPNotAcceptable(_(
"Invalid value for %s header") % Version.string)
return version
def is_null(self):
return self.major == 0 and self.minor == 0
def matches(self, start_version, end_version):
if self.is_null():
raise ValueError
return start_version <= self <= end_version
def __lt__(self, other):
if self.major < other.major:
return True
if self.major == other.major and self.minor < other.minor:
return True
return False
def __gt__(self, other):
if self.major > other.major:
return True
if self.major == other.major and self.minor > other.minor:
return True
return False
def __eq__(self, other):
return self.major == other.major and self.minor == other.minor
def __le__(self, other):
return self < other or self == other
def __ne__(self, other):
return not self.__eq__(other)
def __ge__(self, other):
return self > other or self == other