130 lines
4.7 KiB
Python
130 lines
4.7 KiB
Python
# Copyright 2011 Denali Systems, Inc.
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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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"""
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Volume interface
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"""
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from novaclient import api_versions
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from novaclient import base
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class Volume(base.Resource):
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"""
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A volume is an extra block level storage to the OpenStack
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instances.
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"""
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NAME_ATTR = 'display_name'
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def __repr__(self):
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return "<Volume: %s>" % self.id
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class VolumeManager(base.Manager):
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"""
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Manage :class:`Volume` resources. This is really about volume attachments.
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"""
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resource_class = Volume
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@api_versions.wraps("2.0", "2.48")
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def create_server_volume(self, server_id, volume_id, device=None):
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"""
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Attach a volume identified by the volume ID to the given server ID
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:param server_id: The ID of the server
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:param volume_id: The ID of the volume to attach.
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:param device: The device name (optional)
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:rtype: :class:`Volume`
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"""
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body = {'volumeAttachment': {'volumeId': volume_id}}
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if device is not None:
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body['volumeAttachment']['device'] = device
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return self._create("/servers/%s/os-volume_attachments" % server_id,
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body, "volumeAttachment")
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@api_versions.wraps("2.49")
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def create_server_volume(self, server_id, volume_id, device=None,
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tag=None):
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"""
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Attach a volume identified by the volume ID to the given server ID
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:param server_id: The ID of the server
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:param volume_id: The ID of the volume to attach.
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:param device: The device name (optional)
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:param tag: The tag (optional)
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:rtype: :class:`Volume`
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"""
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body = {'volumeAttachment': {'volumeId': volume_id}}
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if device is not None:
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body['volumeAttachment']['device'] = device
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if tag is not None:
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body['volumeAttachment']['tag'] = tag
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return self._create("/servers/%s/os-volume_attachments" % server_id,
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body, "volumeAttachment")
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def update_server_volume(self, server_id, src_volid, dest_volid):
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"""
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Swaps the existing volume attachment to point to a new volume.
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Takes a server, a source (attached) volume and a destination volume and
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performs a hypervisor assisted data migration from src to dest volume,
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detaches the original (source) volume and attaches the new destination
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volume. Note that not all backing hypervisor drivers support this
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operation and it may be disabled via policy.
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:param server_id: The ID of the server
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:param source_volume: The ID of the src volume
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:param dest_volume: The ID of the destination volume
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:rtype: :class:`Volume`
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"""
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body = {'volumeAttachment': {'volumeId': dest_volid}}
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return self._update("/servers/%s/os-volume_attachments/%s" %
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(server_id, src_volid,),
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body, "volumeAttachment")
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def get_server_volume(self, server_id, attachment_id):
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"""
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Get the volume identified by the attachment ID, that is attached to
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the given server ID
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:param server_id: The ID of the server
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:param attachment_id: The ID of the attachment
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:rtype: :class:`Volume`
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"""
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return self._get("/servers/%s/os-volume_attachments/%s" % (server_id,
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attachment_id,), "volumeAttachment")
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def get_server_volumes(self, server_id):
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"""
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Get a list of all the attached volumes for the given server ID
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:param server_id: The ID of the server
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:rtype: list of :class:`Volume`
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"""
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return self._list("/servers/%s/os-volume_attachments" % server_id,
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"volumeAttachments")
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def delete_server_volume(self, server_id, attachment_id):
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"""
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Detach a volume identified by the attachment ID from the given server
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:param server_id: The ID of the server
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:param attachment_id: The ID of the attachment
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:returns: An instance of novaclient.base.TupleWithMeta
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"""
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return self._delete("/servers/%s/os-volume_attachments/%s" %
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(server_id, attachment_id,))
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