OpenStack Orchestration (Heat)
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#
# 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.
from oslo_config import cfg
from heat.common import exception
from heat.common.i18n import _
from heat.engine.clients import progress
from heat.engine import resource
from heat.engine import rsrc_defn
class BaseVolume(resource.Resource):
"""Base Volume Manager."""
default_client_name = 'cinder'
def _create_arguments(self):
return {}
def handle_create(self):
backup_id = self.properties.get(self.BACKUP_ID)
cinder = self.client()
if backup_id is not None:
vol_id = cinder.restores.restore(backup_id).volume_id
vol = cinder.volumes.get(vol_id)
kwargs = self._fetch_name_and_description()
cinder.volumes.update(vol_id, **kwargs)
else:
kwargs = self._create_arguments()
kwargs.update(self._fetch_name_and_description())
vol = cinder.volumes.create(**kwargs)
self.resource_id_set(vol.id)
return vol.id
def check_create_complete(self, vol_id):
vol = self.client().volumes.get(vol_id)
if vol.status == 'available':
return True
if vol.status in self._volume_creating_status:
return False
if vol.status == 'error':
raise exception.ResourceInError(
resource_status=vol.status)
else:
raise exception.ResourceUnknownStatus(
resource_status=vol.status,
result=_('Volume create failed'))
def _name(self):
return self.physical_resource_name()
def _description(self):
return self.physical_resource_name()
def _fetch_name_and_description(self, name=None,
description=None):
return {'name': name or self._name(),
'description': description or self._description()}
def handle_check(self):
vol = self.client().volumes.get(self.resource_id)
statuses = ['available', 'in-use']
checks = [
{'attr': 'status', 'expected': statuses, 'current': vol.status},
]
self._verify_check_conditions(checks)
def handle_snapshot_delete(self, state):
backup = state not in ((self.CREATE, self.FAILED),
(self.UPDATE, self.FAILED))
prg = progress.VolumeDeleteProgress()
prg.backup['called'] = not backup
prg.backup['complete'] = not backup
return prg
def handle_delete(self):
if self.resource_id is None:
return progress.VolumeDeleteProgress(True)
prg = progress.VolumeDeleteProgress()
prg.backup['called'] = True
prg.backup['complete'] = True
return prg
def _create_backup(self):
backup = self.client().backups.create(self.resource_id)
return backup.id
def _check_create_backup_complete(self, prg):
backup = self.client().backups.get(prg.backup_id)
if backup.status == 'creating':
return False
if backup.status == 'available':
return True
else:
raise exception.ResourceUnknownStatus(
resource_status=backup.status,
result=_('Volume backup failed'))
def _delete_volume(self):
"""Call the volume delete API.
Returns False if further checking of volume status is required,
True otherwise.
"""
try:
cinder = self.client()
vol = cinder.volumes.get(self.resource_id)
if vol.status == 'in-use':
raise exception.Error(_('Volume in use'))
# if the volume is already in deleting status,
# just wait for the deletion to complete
if vol.status != 'deleting':
cinder.volumes.delete(self.resource_id)
return False
except Exception as ex:
self.client_plugin().ignore_not_found(ex)
return True
def check_delete_complete(self, prg):
if not prg.backup['called']:
prg.backup_id = self._create_backup()
prg.backup['called'] = True
return False
if not prg.backup['complete']:
prg.backup['complete'] = self._check_create_backup_complete(prg)
return False
if not prg.delete['called']:
prg.delete['complete'] = self._delete_volume()
prg.delete['called'] = True
return False
if not prg.delete['complete']:
try:
vol = self.client().volumes.get(self.resource_id)
except Exception as ex:
self.client_plugin().ignore_not_found(ex)
prg.delete['complete'] = True
return True
if vol.status.lower() == 'error_deleting':
raise exception.ResourceInError(status_reason='delete',
resource_status=vol.status)
else:
return False
return True
@classmethod
def validate_deletion_policy(cls, policy):
res = super(BaseVolume, cls).validate_deletion_policy(policy)
if res:
return res
if (policy == rsrc_defn.ResourceDefinition.SNAPSHOT and
not cfg.CONF.volumes.backups_enabled):
msg = _('"%s" deletion policy not supported - '
'volume backup service is not enabled.') % policy
raise exception.StackValidationFailed(message=msg)
class BaseVolumeAttachment(resource.Resource):
"""Base Volume Attachment Manager."""
default_client_name = 'cinder'
def handle_create(self):
server_id = self.properties[self.INSTANCE_ID]
volume_id = self.properties[self.VOLUME_ID]
dev = (self.properties[self.DEVICE] if self.properties[self.DEVICE]
else None)
attach_id = self.client_plugin('nova').attach_volume(
server_id, volume_id, dev)
self.resource_id_set(attach_id)
return volume_id
def check_create_complete(self, volume_id):
return self.client_plugin().check_attach_volume_complete(volume_id)
def handle_delete(self):
prg = None
if self.resource_id:
server_id = self.properties[self.INSTANCE_ID]
vol_id = self.properties[self.VOLUME_ID]
self.client_plugin('nova').detach_volume(server_id,
self.resource_id)
prg = progress.VolumeDetachProgress(
server_id, vol_id, self.resource_id)
prg.called = True
return prg
def check_delete_complete(self, prg):
if prg is None:
return True
if not prg.cinder_complete:
prg.cinder_complete = self.client_plugin(
).check_detach_volume_complete(prg.vol_id)
return False
if not prg.nova_complete:
prg.nova_complete = self.client_plugin(
'nova').check_detach_volume_complete(prg.srv_id,
prg.attach_id)
return prg.nova_complete
return True