1aed004a50
Rollback mechanism was added in Magnum in patch https://review.openstack.org/343478 but currently there is no support on the client side. This patch add rollback support for Magnum cluster/bay, user can enable rollback on cluster update failure by specifying option '--rollback' when executing 'magnum cluster-update', for example: magnum cluster-update XXX replace node_count=5 --rollback The code is based on outdated patch https://review.openstack.org/347586 and improves it: * added rollback support for clusters * added API version check in CLI (should be >= 1.3) * added several unit tests Change-Id: Iaae51e084e8ffd69be38512eec8c4c54b158b55e Co-authored-by: Wenzhi Yu <wenzhi_yu@163.com> Implements: blueprint bay-rollback-on-update-failure
112 lines
3.8 KiB
Python
112 lines
3.8 KiB
Python
# Copyright 2014 NEC Corporation. All rights reserved.
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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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from magnumclient.common import base
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from magnumclient.common import utils
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from magnumclient import exceptions
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# Derived classes may append their own custom attributes to this default list
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CREATION_ATTRIBUTES = ['name', 'node_count', 'discovery_url', 'master_count']
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class BaseTemplate(base.Resource):
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# template_name must be overridden by any derived class.
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# template_name should be an uppercase plural, e.g. "Clusters"
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template_name = ''
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def __repr__(self):
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return "<" + self.__class__.template_name + " %s>" % self._info
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class BaseTemplateManager(base.Manager):
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# template_name must be overridden by any derived class.
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# template_name should be a lowercase plural, e.g. "clusters"
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template_name = ''
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@classmethod
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def _path(cls, id=None):
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return '/v1/' + cls.template_name + \
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'/%s' % id if id else '/v1/' + cls.template_name
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def list(self, limit=None, marker=None, sort_key=None,
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sort_dir=None, detail=False):
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"""Retrieve a list of bays.
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:param marker: Optional, the UUID of a bay, eg the last
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bay from a previous result set. Return
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the next result set.
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:param limit: The maximum number of results to return per
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request, if:
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1) limit > 0, the maximum number of bays to return.
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2) limit == 0, return the entire list of bays.
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3) limit param is NOT specified (None), the number of items
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returned respect the maximum imposed by the Magnum API
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(see Magnum's api.max_limit option).
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:param sort_key: Optional, field used for sorting.
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:param sort_dir: Optional, direction of sorting, either 'asc' (the
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default) or 'desc'.
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:param detail: Optional, boolean whether to return detailed information
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about bays.
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:returns: A list of bays.
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"""
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if limit is not None:
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limit = int(limit)
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filters = utils.common_filters(marker, limit, sort_key, sort_dir)
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path = ''
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if detail:
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path += 'detail'
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if filters:
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path += '?' + '&'.join(filters)
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if limit is None:
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return self._list(self._path(path), self.__class__.template_name)
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else:
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return self._list_pagination(self._path(path),
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self.__class__.template_name,
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limit=limit)
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def get(self, id):
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try:
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return self._list(self._path(id))[0]
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except IndexError:
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return None
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def create(self, **kwargs):
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new = {}
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for (key, value) in kwargs.items():
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if key in CREATION_ATTRIBUTES:
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new[key] = value
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else:
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raise exceptions.InvalidAttribute(
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"Key must be in %s" % ",".join(CREATION_ATTRIBUTES))
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return self._create(self._path(), new)
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def delete(self, id):
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return self._delete(self._path(id))
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def update(self, id, patch, rollback=False):
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url = self._path(id)
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if rollback:
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url += '/?rollback=True'
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return self._update(url, patch)
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