OpenStack Block Storage (Cinder)
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# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
Client side of the volume backup RPC API.
"""
from oslo_log import log as logging
from cinder.common import constants
from cinder import rpc
LOG = logging.getLogger(__name__)
class BackupAPI(rpc.RPCAPI):
"""Client side of the volume rpc API.
API version history:
.. code-block:: none
1.0 - Initial version.
1.1 - Changed methods to accept backup objects instead of IDs.
1.2 - A version that got in by mistake (without breaking anything).
1.3 - Dummy version bump to mark start of having cinder-backup service
decoupled from cinder-volume.
... Mitaka supports messaging 1.3. Any changes to existing methods in
1.x after this point should be done so that they can handle version cap
set to 1.3.
2.0 - Remove 1.x compatibility
2.1 - Adds set_log_levels and get_log_levels
2.2 - Adds publish_service_capabilities
"""
RPC_API_VERSION = '2.2'
RPC_DEFAULT_VERSION = '2.0'
TOPIC = constants.BACKUP_TOPIC
BINARY = 'cinder-backup'
def create_backup(self, ctxt, backup):
LOG.debug("create_backup in rpcapi backup_id %s", backup.id)
cctxt = self._get_cctxt(server=backup.host)
cctxt.cast(ctxt, 'create_backup', backup=backup)
def restore_backup(self, ctxt, backup_host, backup, volume_id):
LOG.debug("restore_backup in rpcapi backup_id %s", backup.id)
cctxt = self._get_cctxt(server=backup_host)
cctxt.cast(ctxt, 'restore_backup', backup=backup,
volume_id=volume_id)
def delete_backup(self, ctxt, backup):
LOG.debug("delete_backup rpcapi backup_id %s", backup.id)
cctxt = self._get_cctxt(server=backup.host)
cctxt.cast(ctxt, 'delete_backup', backup=backup)
def export_record(self, ctxt, backup):
LOG.debug("export_record in rpcapi backup_id %(id)s "
"on host %(host)s.",
{'id': backup.id,
'host': backup.host})
cctxt = self._get_cctxt(server=backup.host)
return cctxt.call(ctxt, 'export_record', backup=backup)
def import_record(self, ctxt, host, backup, backup_service, backup_url,
backup_hosts):
LOG.debug("import_record rpcapi backup id %(id)s "
"on host %(host)s for backup_url %(url)s.",
{'id': backup.id, 'host': host, 'url': backup_url})
cctxt = self._get_cctxt(server=host)
cctxt.cast(ctxt, 'import_record',
backup=backup,
backup_service=backup_service,
backup_url=backup_url,
backup_hosts=backup_hosts)
def reset_status(self, ctxt, backup, status):
LOG.debug("reset_status in rpcapi backup_id %(id)s "
"on host %(host)s.",
{'id': backup.id, 'host': backup.host})
cctxt = self._get_cctxt(server=backup.host)
return cctxt.cast(ctxt, 'reset_status', backup=backup, status=status)
def check_support_to_force_delete(self, ctxt, host):
LOG.debug("Check if backup driver supports force delete "
"on host %(host)s.", {'host': host})
cctxt = self._get_cctxt(server=host)
return cctxt.call(ctxt, 'check_support_to_force_delete')
@rpc.assert_min_rpc_version('2.1')
def set_log_levels(self, context, service, log_request):
cctxt = self._get_cctxt(server=service.host, version='2.1')
cctxt.cast(context, 'set_log_levels', log_request=log_request)
@rpc.assert_min_rpc_version('2.1')
def get_log_levels(self, context, service, log_request):
cctxt = self._get_cctxt(server=service.host, version='2.1')
return cctxt.call(context, 'get_log_levels', log_request=log_request)
@rpc.assert_min_rpc_version('2.2')
def publish_service_capabilities(self, ctxt):
cctxt = self._get_cctxt(version='2.2', fanout=True)
cctxt.cast(ctxt, 'publish_service_capabilities')