1145d9424b
This is not technically needed, however we and the libraries we use, aren't very good about keeping our strings and bytes straight for python 3. jsonutils has an attempt to decode stage that means we can let it manage the correct types. Change-Id: I2caf4a5b9a04495aa0286f2b6e3193a17ff246e5
117 lines
4.1 KiB
Python
117 lines
4.1 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from keystoneclient.openstack.common import jsonutils
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from keystoneclient import utils
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class Adapter(object):
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"""An instance of a session with local variables.
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A session is a global object that is shared around amongst many clients. It
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therefore contains state that is relevant to everyone. There is a lot of
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state such as the service type and region_name that are only relevant to a
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particular client that is using the session. An adapter provides a wrapper
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of client local data around the global session object.
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"""
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@utils.positional()
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def __init__(self, session, service_type=None, service_name=None,
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interface=None, region_name=None, auth=None,
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user_agent=None):
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"""Create a new adapter.
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:param Session session: The session object to wrap.
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:param str service_type: The default service_type for URL discovery.
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:param str service_name: The default service_name for URL discovery.
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:param str interface: The default interface for URL discovery.
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:param str region_name: The default region_name for URL discovery.
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:param auth.BaseAuthPlugin auth: An auth plugin to use instead of the
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session one.
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:param str user_agent: The User-Agent string to set.
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"""
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self.session = session
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self.service_type = service_type
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self.service_name = service_name
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self.interface = interface
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self.region_name = region_name
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self.user_agent = user_agent
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self.auth = auth
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def request(self, url, method, **kwargs):
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endpoint_filter = kwargs.setdefault('endpoint_filter', {})
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if self.service_type:
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endpoint_filter.setdefault('service_type', self.service_type)
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if self.service_name:
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endpoint_filter.setdefault('service_name', self.service_name)
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if self.interface:
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endpoint_filter.setdefault('interface', self.interface)
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if self.region_name:
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endpoint_filter.setdefault('region_name', self.region_name)
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if self.auth:
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kwargs.setdefault('auth', self.auth)
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if self.user_agent:
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kwargs.setdefault('user_agent', self.user_agent)
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return self.session.request(url, method, **kwargs)
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def get(self, url, **kwargs):
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return self.request(url, 'GET', **kwargs)
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def head(self, url, **kwargs):
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return self.request(url, 'HEAD', **kwargs)
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def post(self, url, **kwargs):
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return self.request(url, 'POST', **kwargs)
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def put(self, url, **kwargs):
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return self.request(url, 'PUT', **kwargs)
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def patch(self, url, **kwargs):
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return self.request(url, 'PATCH', **kwargs)
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def delete(self, url, **kwargs):
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return self.request(url, 'DELETE', **kwargs)
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class LegacyJsonAdapter(Adapter):
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"""Make something that looks like an old HTTPClient.
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A common case when using an adapter is that we want an interface similar to
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the HTTPClients of old which returned the body as JSON as well.
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You probably don't want this if you are starting from scratch.
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"""
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def request(self, *args, **kwargs):
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headers = kwargs.setdefault('headers', {})
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headers.setdefault('Accept', 'application/json')
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try:
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kwargs['json'] = kwargs.pop('body')
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except KeyError:
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pass
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resp = super(LegacyJsonAdapter, self).request(*args, **kwargs)
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body = None
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if resp.text:
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try:
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body = jsonutils.loads(resp.text)
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except ValueError:
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pass
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return resp, body
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