170 lines
7.1 KiB
Python
170 lines
7.1 KiB
Python
# 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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import six
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from karbor.common import constants
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from karbor import exception
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from karbor import resource
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from karbor.services.protection.client_factory import ClientFactory
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from karbor.services.protection import protectable_plugin
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from oslo_log import log as logging
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LOG = logging.getLogger(__name__)
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INVALID_VOLUME_STATUS = ['error', 'deleting', 'error_deleting']
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class VolumeProtectablePlugin(protectable_plugin.ProtectablePlugin):
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"""Cinder volume protectable plugin"""
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_SUPPORT_RESOURCE_TYPE = constants.VOLUME_RESOURCE_TYPE
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def _client(self, context):
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self._client_instance = ClientFactory.create_client(
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"cinder",
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context)
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return self._client_instance
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def _k8s_client(self, context):
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self._k8s_client_instance = ClientFactory.create_client(
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"k8s", context)
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return self._k8s_client_instance
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def get_resource_type(self):
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return self._SUPPORT_RESOURCE_TYPE
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def get_parent_resource_types(self):
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return (constants.SERVER_RESOURCE_TYPE,
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constants.POD_RESOURCE_TYPE,
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constants.PROJECT_RESOURCE_TYPE)
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def list_resources(self, context, parameters=None):
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try:
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volumes = self._client(context).volumes.list(detailed=True)
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except Exception as e:
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LOG.exception("List all summary volumes from cinder failed.")
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raise exception.ListProtectableResourceFailed(
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type=self._SUPPORT_RESOURCE_TYPE,
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reason=six.text_type(e))
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else:
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return [resource.Resource(
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type=self._SUPPORT_RESOURCE_TYPE,
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id=vol.id, name=vol.name,
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extra_info={'availability_zone': vol.availability_zone})
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for vol in volumes
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if vol.status not in INVALID_VOLUME_STATUS]
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def show_resource(self, context, resource_id, parameters=None):
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try:
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volume = self._client(context).volumes.get(resource_id)
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except Exception as e:
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LOG.exception("Show a summary volume from cinder failed.")
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raise exception.ProtectableResourceNotFound(
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id=resource_id,
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type=self._SUPPORT_RESOURCE_TYPE,
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reason=six.text_type(e))
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else:
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if volume.status in INVALID_VOLUME_STATUS:
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raise exception.ProtectableResourceInvalidStatus(
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id=resource_id, type=self._SUPPORT_RESOURCE_TYPE,
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status=volume.status)
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return resource.Resource(
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type=self._SUPPORT_RESOURCE_TYPE,
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id=volume.id, name=volume.name,
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extra_info={'availability_zone': volume.availability_zone})
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def _get_dependent_resources_by_pod(self, context, parent_resource):
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try:
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name = parent_resource.name
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pod_namespace, pod_name = name.split(":")
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pod = self._k8s_client(context).read_namespaced_pod(
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pod_name, pod_namespace)
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if not pod.spec.volumes:
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return []
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mounted_vol_list = []
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for volume in pod.spec.volumes:
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volume_pvc = volume.persistent_volume_claim
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volume_cinder = volume.cinder
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if volume_pvc:
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pvc_name = volume_pvc.claim_name
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pvc = self._k8s_client(
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context).read_namespaced_persistent_volume_claim(
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pvc_name, pod_namespace)
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pv_name = pvc.spec.volume_name
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if pv_name:
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pv = self._k8s_client(
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context).read_persistent_volume(pv_name)
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if pv.spec.cinder:
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mounted_vol_list.append(
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pv.spec.cinder.volume_id)
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elif volume_cinder:
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mounted_vol_list.append(
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volume_cinder.volume_id)
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except Exception as e:
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LOG.exception("Get mounted volumes from kubernetes "
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"pod failed.")
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raise exception.ProtectableResourceNotFound(
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id=parent_resource.id,
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type=parent_resource.type,
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reason=six.text_type(e))
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try:
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volumes = self._client(context).volumes.list(detailed=True)
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except Exception as e:
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LOG.exception("List all detailed volumes from cinder failed.")
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raise exception.ListProtectableResourceFailed(
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type=self._SUPPORT_RESOURCE_TYPE,
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reason=six.text_type(e))
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else:
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return [resource.Resource(
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type=self._SUPPORT_RESOURCE_TYPE, id=vol.id, name=vol.name,
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extra_info={'availability_zone': vol.availability_zone})
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for vol in volumes if (vol.id in mounted_vol_list)]
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def _get_dependent_resources_by_server(self, context, parent_resource):
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def _is_attached_to(vol):
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if parent_resource.type == constants.SERVER_RESOURCE_TYPE:
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return any([s.get('server_id') == parent_resource.id
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for s in vol.attachments])
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if parent_resource.type == constants.PROJECT_RESOURCE_TYPE:
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return getattr(
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vol,
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'os-vol-tenant-attr:tenant_id'
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) == parent_resource.id
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try:
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volumes = self._client(context).volumes.list(detailed=True)
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except Exception as e:
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LOG.exception("List all detailed volumes from cinder failed.")
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raise exception.ListProtectableResourceFailed(
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type=self._SUPPORT_RESOURCE_TYPE,
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reason=six.text_type(e))
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else:
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return [resource.Resource(
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type=self._SUPPORT_RESOURCE_TYPE, id=vol.id, name=vol.name,
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extra_info={'availability_zone': vol.availability_zone})
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for vol in volumes if _is_attached_to(vol)]
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def get_dependent_resources(self, context, parent_resource):
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if parent_resource.type in (constants.SERVER_RESOURCE_TYPE,
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constants.PROJECT_RESOURCE_TYPE):
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return self._get_dependent_resources_by_server(context,
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parent_resource)
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if parent_resource.type == constants.POD_RESOURCE_TYPE:
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return self._get_dependent_resources_by_pod(context,
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parent_resource)
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return []
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