c3c15f6cb2
Block Storage API mv 3.66 enables snapshots of in-use volumes without requiring a 'force' flag. For backward compatibility, the API silently accepts force=true, even though the 'force' flag is considered invalid for that call. That behavior is replicated in the client, where --force with a true value is silently accepted. The --force option is not advertised in the shell and an option value that doesn't evaluate to true raises an UnsupportedAttribute error. Similar behavior from the v3 Snapshot class, except it raises a ValueError under similar circumstances. Change-Id: I7408d0e3a5ed7f4cbcaf65cf3434ad60aaed511d
281 lines
11 KiB
Python
281 lines
11 KiB
Python
# Copyright (c) 2013 OpenStack Foundation
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# 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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"""Volume snapshot interface (v3 extension)."""
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from oslo_utils import strutils
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from cinderclient import api_versions
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from cinderclient.apiclient import base as common_base
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from cinderclient import base
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MV_3_66_FORCE_FLAG_ERROR = (
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"Since microversion 3.66 of the Block Storage API, the 'force' option is "
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"invalid for this request. For backward compatibility, however, when the "
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"'force' flag is passed with a value evaluating to True, it is silently "
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"ignored.")
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class Snapshot(base.Resource):
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"""A Snapshot is a point-in-time snapshot of an openstack volume."""
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def __repr__(self):
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return "<Snapshot: %s>" % self.id
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def delete(self, force=False):
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"""Delete this snapshot."""
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return self.manager.delete(self, force)
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def update(self, **kwargs):
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"""Update the name or description for this snapshot."""
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return self.manager.update(self, **kwargs)
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@property
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def progress(self):
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return self._info.get('os-extended-snapshot-attributes:progress')
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@property
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def project_id(self):
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return self._info.get('os-extended-snapshot-attributes:project_id')
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def reset_state(self, state):
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"""Update the snapshot with the provided state."""
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return self.manager.reset_state(self, state)
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def set_metadata(self, metadata):
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"""Set metadata of this snapshot."""
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return self.manager.set_metadata(self, metadata)
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def delete_metadata(self, keys):
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"""Delete metadata of this snapshot."""
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return self.manager.delete_metadata(self, keys)
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def update_all_metadata(self, metadata):
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"""Update_all metadata of this snapshot."""
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return self.manager.update_all_metadata(self, metadata)
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def manage(self, volume_id, ref, name=None, description=None,
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metadata=None):
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"""Manage an existing snapshot."""
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self.manager.manage(volume_id=volume_id, ref=ref, name=name,
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description=description, metadata=metadata)
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def list_manageable(self, host, detailed=True, marker=None, limit=None,
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offset=None, sort=None, cluster=None):
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return self.manager.list_manageable(host, detailed=detailed,
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marker=marker, limit=limit,
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offset=offset, sort=sort,
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cluster=cluster)
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def unmanage(self, snapshot):
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"""Unmanage a snapshot."""
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self.manager.unmanage(snapshot)
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class SnapshotManager(base.ManagerWithFind):
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"""Manage :class:`Snapshot` resources."""
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resource_class = Snapshot
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@api_versions.wraps("3.0", "3.65")
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def create(self, volume_id, force=False,
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name=None, description=None, metadata=None):
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"""Creates a snapshot of the given volume.
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:param volume_id: The ID of the volume to snapshot.
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:param force: If force is True, create a snapshot even if the volume is
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attached to an instance. Default is False.
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:param name: Name of the snapshot
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:param description: Description of the snapshot
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:param metadata: Metadata of the snapshot
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:rtype: :class:`Snapshot`
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"""
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if metadata is None:
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snapshot_metadata = {}
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else:
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snapshot_metadata = metadata
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body = {'snapshot': {'volume_id': volume_id,
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'force': force,
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'name': name,
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'description': description,
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'metadata': snapshot_metadata}}
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return self._create('/snapshots', body, 'snapshot')
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@api_versions.wraps("3.66")
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def create(self, volume_id, force=None, # noqa: F811
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name=None, description=None, metadata=None):
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"""Creates a snapshot of the given volume.
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:param volume_id: The ID of the volume to snapshot.
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:param force: This is technically not valid after mv 3.66, but the
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API silently accepts force=True for backward compatibility, so this
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function will, too
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:param name: Name of the snapshot
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:param description: Description of the snapshot
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:param metadata: Metadata of the snapshot
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:raises: ValueError if 'force' is not passed with a value that
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evaluates to true
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:rtype: :class:`Snapshot`
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"""
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if metadata is None:
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snapshot_metadata = {}
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else:
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snapshot_metadata = metadata
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body = {'snapshot': {'volume_id': volume_id,
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'name': name,
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'description': description,
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'metadata': snapshot_metadata}}
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if force is not None:
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try:
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force = strutils.bool_from_string(force, strict=True)
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if not force:
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raise ValueError()
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except ValueError:
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raise ValueError(MV_3_66_FORCE_FLAG_ERROR)
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return self._create('/snapshots', body, 'snapshot')
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def get(self, snapshot_id):
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"""Shows snapshot details.
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:param snapshot_id: The ID of the snapshot to get.
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:rtype: :class:`Snapshot`
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"""
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return self._get("/snapshots/%s" % snapshot_id, "snapshot")
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def list(self, detailed=True, search_opts=None, marker=None, limit=None,
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sort=None):
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"""Get a list of all snapshots.
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:rtype: list of :class:`Snapshot`
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"""
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resource_type = "snapshots"
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url = self._build_list_url(resource_type, detailed=detailed,
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search_opts=search_opts, marker=marker,
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limit=limit, sort=sort)
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return self._list(url, resource_type, limit=limit)
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def delete(self, snapshot, force=False):
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"""Delete a snapshot.
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:param snapshot: The :class:`Snapshot` to delete.
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:param force: Allow delete in state other than error or available.
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"""
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if force:
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return self._action('os-force_delete', snapshot)
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else:
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return self._delete("/snapshots/%s" % base.getid(snapshot))
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def update(self, snapshot, **kwargs):
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"""Update the name or description for a snapshot.
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:param snapshot: The :class:`Snapshot` to update.
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"""
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if not kwargs:
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return
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body = {"snapshot": kwargs}
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return self._update("/snapshots/%s" % base.getid(snapshot), body)
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def reset_state(self, snapshot, state):
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"""Update the specified snapshot with the provided state."""
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return self._action('os-reset_status', snapshot,
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{'status': state} if state else {})
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def _action(self, action, snapshot, info=None, **kwargs):
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"""Perform a snapshot action."""
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body = {action: info}
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self.run_hooks('modify_body_for_action', body, **kwargs)
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url = '/snapshots/%s/action' % base.getid(snapshot)
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resp, body = self.api.client.post(url, body=body)
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return common_base.TupleWithMeta((resp, body), resp)
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def update_snapshot_status(self, snapshot, update_dict):
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return self._action('os-update_snapshot_status',
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base.getid(snapshot), update_dict)
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def set_metadata(self, snapshot, metadata):
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"""Update/Set a snapshots metadata.
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:param snapshot: The :class:`Snapshot`.
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:param metadata: A list of keys to be set.
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"""
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body = {'metadata': metadata}
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return self._create("/snapshots/%s/metadata" % base.getid(snapshot),
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body, "metadata")
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def delete_metadata(self, snapshot, keys):
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"""Delete specified keys from snapshot metadata.
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:param snapshot: The :class:`Snapshot`.
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:param keys: A list of keys to be removed.
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"""
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response_list = []
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snapshot_id = base.getid(snapshot)
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for k in keys:
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resp, body = self._delete("/snapshots/%s/metadata/%s" %
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(snapshot_id, k))
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response_list.append(resp)
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return common_base.ListWithMeta([], response_list)
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def update_all_metadata(self, snapshot, metadata):
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"""Update_all snapshot metadata.
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:param snapshot: The :class:`Snapshot`.
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:param metadata: A list of keys to be updated.
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"""
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body = {'metadata': metadata}
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return self._update("/snapshots/%s/metadata" % base.getid(snapshot),
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body)
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def manage(self, volume_id, ref, name=None, description=None,
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metadata=None):
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"""Manage an existing snapshot."""
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body = {'snapshot': {'volume_id': volume_id,
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'ref': ref,
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'name': name,
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'description': description,
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'metadata': metadata
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}
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}
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return self._create('/os-snapshot-manage', body, 'snapshot')
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@api_versions.wraps("3.0")
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def list_manageable(self, host, detailed=True, marker=None,
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limit=None, offset=None, sort=None):
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url = self._build_list_url("os-snapshot-manage", detailed=detailed,
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search_opts={'host': host}, marker=marker,
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limit=limit, offset=offset, sort=sort)
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return self._list(url, "manageable-snapshots")
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@api_versions.wraps('3.8')
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def list_manageable(self, host, detailed=True, marker=None, # noqa: F811
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limit=None, offset=None, sort=None, cluster=None):
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search_opts = {'cluster': cluster} if cluster else {'host': host}
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url = self._build_list_url("manageable_snapshots", detailed=detailed,
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search_opts=search_opts, marker=marker,
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limit=limit, offset=offset, sort=sort)
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return self._list(url, "manageable-snapshots")
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def unmanage(self, snapshot):
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"""Unmanage a snapshot."""
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return self._action('os-unmanage', snapshot, None)
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