136 lines
3.7 KiB
Python
136 lines
3.7 KiB
Python
# Copyright 2012 Managed I.T.
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#
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# Author: Kiall Mac Innes <kiall@managedit.ie>
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#
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# 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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import abc
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from stevedore import extension
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from urllib import parse
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from oslo_serialization import jsonutils
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from designateclient import exceptions
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class Controller(metaclass=abc.ABCMeta):
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def __init__(self, client):
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self.client = client
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def build_url(self, url, criterion=None, marker=None, limit=None):
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params = criterion or {}
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if marker is not None:
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params['marker'] = marker
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if limit is not None:
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params['limit'] = limit
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q = parse.urlencode(params) if params else ''
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return '{url}{params}'.format(
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url=url,
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params=f'?{q}'
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)
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def _serialize(self, kwargs):
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headers = kwargs.get('headers')
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content_type = headers.get('Content-Type') if headers else None
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if 'data' in kwargs and content_type in {None, 'application/json'}:
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kwargs['data'] = jsonutils.dumps(kwargs['data'])
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def _post(self, url, response_key=None, **kwargs):
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self._serialize(kwargs)
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resp, body = self.client.session.post(url, **kwargs)
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if response_key is not None:
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return body[response_key]
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return body
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def _get(self, url, response_key=None):
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resp, body = self.client.session.get(url)
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if response_key is not None:
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return body[response_key]
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return body
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def _patch(self, url, response_key=None, **kwargs):
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self._serialize(kwargs)
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resp, body = self.client.session.patch(url, **kwargs)
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if response_key is not None:
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return body[response_key]
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return body
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def _put(self, url, response_key=None, **kwargs):
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self._serialize(kwargs)
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resp, body = self.client.session.put(url, **kwargs)
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if response_key is not None:
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return body[response_key]
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return body
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def _delete(self, url, response_key=None, **kwargs):
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resp, body = self.client.session.delete(url, **kwargs)
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if response_key is not None:
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return body[response_key]
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return body
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class CrudController(Controller, metaclass=abc.ABCMeta):
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@abc.abstractmethod
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def list(self, *args, **kw):
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"""
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List a resource
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"""
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@abc.abstractmethod
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def get(self, *args, **kw):
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"""
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Get a resource
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"""
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@abc.abstractmethod
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def create(self, *args, **kw):
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"""
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Create a resource
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"""
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@abc.abstractmethod
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def update(self, *args, **kw):
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"""
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Update a resource
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"""
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@abc.abstractmethod
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def delete(self, *args, **kw):
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"""
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Delete a resource
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"""
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def get_versions():
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mgr = extension.ExtensionManager('designateclient.versions')
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return {ep.name: ep.plugin for ep in mgr.extensions}
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def Client(version, *args, **kwargs): # noqa
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versions = get_versions()
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if version not in versions:
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msg = 'Version {} is not supported, use one of ({})'.format(
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version, list(versions.keys())
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)
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raise exceptions.UnsupportedVersion(msg)
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return versions[version](*args, **kwargs)
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