xing-yang
44ebdd2252
CG APIs work as follows:
* Create CG - Create only in groups table
* Modify CG - Modify in CG table if CG in CG table, otherwise modify
in groups table.
* Delete CG - Delete from CG or groups table depending on where it is
* List CG - Check both CG and groups tables
* List CG snapshots - Check both CG and groups tables
* Show CG - Check both tables
* Show CG snapshot - Check both tables
* Create CG snapshot - Create either in CG or groups table depending on
the CG.
* Create CG from source - Create in either CG or groups table
depending on the source.
* Create volume - Add volume either to CG or group
Additional notes:
* default_cgsnapshot_type is reserved for migrating CGs.
* Group APIs will only write/read in/from the groups table.
* Group APIs won't work on groups with default_cgsnapshot_type.
* Groups with default_cgsnapshot_type can only be operated by CG APIs.
* After CG tables are removed, we'll allow default_cgsnapshot_type
to be used by group APIs.
Partial-Implements: blueprint generic-volume-group
Change-Id: Idd88a5c9587023a56231de42ce59d672e9600770
69 lines
2.6 KiB
Python
69 lines
2.6 KiB
Python
# Copyright (C) 2016 EMC Corporation.
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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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from cinder.api import common
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class ViewBuilder(common.ViewBuilder):
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"""Model group_snapshot API responses as a python dictionary."""
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_collection_name = "group_snapshots"
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def __init__(self):
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"""Initialize view builder."""
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super(ViewBuilder, self).__init__()
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def summary_list(self, request, group_snapshots):
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"""Show a list of group_snapshots without many details."""
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return self._list_view(self.summary, request, group_snapshots)
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def detail_list(self, request, group_snapshots):
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"""Detailed view of a list of group_snapshots ."""
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return self._list_view(self.detail, request, group_snapshots)
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def summary(self, request, group_snapshot):
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"""Generic, non-detailed view of a group_snapshot."""
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return {
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'group_snapshot': {
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'id': group_snapshot.id,
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'name': group_snapshot.name,
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# NOTE(xyang): group_type_id is added for migrating CGs
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# to generic volume groups
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'group_type_id': group_snapshot.group_type_id,
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}
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}
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def detail(self, request, group_snapshot):
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"""Detailed view of a single group_snapshot."""
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return {
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'group_snapshot': {
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'id': group_snapshot.id,
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'group_id': group_snapshot.group_id,
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'group_type_id': group_snapshot.group_type_id,
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'status': group_snapshot.status,
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'created_at': group_snapshot.created_at,
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'name': group_snapshot.name,
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'description': group_snapshot.description
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}
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}
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def _list_view(self, func, request, group_snapshots):
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"""Provide a view for a list of group_snapshots."""
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group_snapshots_list = [func(request, group_snapshot)['group_snapshot']
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for group_snapshot in group_snapshots]
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group_snapshots_dict = dict(group_snapshots=group_snapshots_list)
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return group_snapshots_dict
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