
The Manila client needs the following changes to support microversions: * Maintain backwards compatibility with Kilo. When the client detects that the server doesn't support microversions it will fall back to using the v1 API. * The --os-share-api-version option supports overriding the version. * If 1.0 is specified as the version the client will load the v1 client and use the server's v1 API. * The client will send a request for the server's API version and determine if the client's supported versions and the server's supported versions overlap. If not the client will display an error and quit. See diagram 1 below. * The client supports the @wraps annotation. The annotation is used with the v2/shell.py commands and any class that inherits from the Manager class in manilaclient/base.py. * If an appropriate command version isn't found for commands using @wraps then the client will display an error and quit. following commit: ab49d645befd04c84272f0d24e1b604012d191dd. Diagram 1: Client: 2.5 2.8 |-------------| Server1: 2.0 2.5 |-------------| Client uses version 2.5 Server2: 2.7 2.10 |-------------| Client uses version 2.8 Server3: 2.9 2.12 |-------------| Client displays error and quits Server4: 1.0 (Kilo Server) |-| Client detects pre-microversion server and loads v1 client Example usage of wraps annotation: * Support 2.0 - 2.4: @api_versions.wraps("2.0", "2.4") * Support 2.5 - latest: @api_versions.wraps("2.5") Implements: blueprint manila-client-advanced-microversion-support Change-Id: I3733fe85424e39566addc070d42609e508259f19
94 lines
2.8 KiB
Python
94 lines
2.8 KiB
Python
# Copyright 2013 OpenStack LLC.
|
|
# Copyright 2015 Chuck Fouts
|
|
# 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 manilaclient import base
|
|
from manilaclient.openstack.common.apiclient import base as common_base
|
|
|
|
|
|
class Limits(common_base.Resource):
|
|
"""A collection of RateLimit and AbsoluteLimit objects."""
|
|
|
|
def __repr__(self):
|
|
return "<Limits>"
|
|
|
|
@property
|
|
def absolute(self):
|
|
for (name, value) in list(self._info['absolute'].items()):
|
|
yield AbsoluteLimit(name, value)
|
|
|
|
@property
|
|
def rate(self):
|
|
for group in self._info['rate']:
|
|
uri = group['uri']
|
|
regex = group['regex']
|
|
for rate in group['limit']:
|
|
yield RateLimit(rate['verb'], uri, regex, rate['value'],
|
|
rate['remaining'], rate['unit'],
|
|
rate['next-available'])
|
|
|
|
|
|
class RateLimit(object):
|
|
"""Data model that represents a flattened view of a single rate limit."""
|
|
|
|
def __init__(self, verb, uri, regex, value, remain,
|
|
unit, next_available):
|
|
self.verb = verb
|
|
self.uri = uri
|
|
self.regex = regex
|
|
self.value = value
|
|
self.remain = remain
|
|
self.unit = unit
|
|
self.next_available = next_available
|
|
|
|
def __eq__(self, other):
|
|
return (self.uri == other.uri and
|
|
self.regex == other.regex and
|
|
self.value == other.value and
|
|
self.verb == other.verb and
|
|
self.remain == other.remain and
|
|
self.unit == other.unit and
|
|
self.next_available == other.next_available)
|
|
|
|
def __repr__(self):
|
|
return "<RateLimit: method=%s uri=%s>" % (self.method, self.uri)
|
|
|
|
|
|
class AbsoluteLimit(object):
|
|
"""Data model that represents a single absolute limit."""
|
|
|
|
def __init__(self, name, value):
|
|
self.name = name
|
|
self.value = value
|
|
|
|
def __eq__(self, other):
|
|
return self.value == other.value and self.name == other.name
|
|
|
|
def __repr__(self):
|
|
return "<AbsoluteLimit: name=%s>" % (self.name)
|
|
|
|
|
|
class LimitsManager(base.Manager):
|
|
"""Manager object used to interact with limits resource."""
|
|
|
|
resource_class = Limits
|
|
|
|
def get(self):
|
|
"""Get a specific extension.
|
|
|
|
:rtype: :class:`Limits`
|
|
"""
|
|
return self._get("/limits", "limits")
|