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