107 lines
4.0 KiB
Python
107 lines
4.0 KiB
Python
# Copyright 2023 Red Hat, 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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import hashlib
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import logging
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import os
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import socket
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from oslo_config import cfg
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from glance_store._drivers.cinder import base
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from glance_store.common import cinder_utils
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from glance_store.common import fs_mount as mount
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from glance_store.common import utils
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from glance_store import exceptions
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from glance_store.i18n import _
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CONF = cfg.CONF
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LOG = logging.getLogger(__name__)
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class NfsBrickConnector(base.BaseBrickConnectorInterface):
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def __init__(self, *args, **kwargs):
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self.volume = kwargs.get('volume')
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self.connection_info = kwargs.get('connection_info')
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self.root_helper = kwargs.get('root_helper')
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self.mount_point_base = kwargs.get('mountpoint_base')
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self.attachment_obj = kwargs.get('attachment_obj')
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self.client = kwargs.get('client')
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self.host = socket.gethostname()
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self.volume_api = cinder_utils.API()
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def _get_mount_path(self, share, mount_point_base):
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"""Returns the mount path prefix using the mount point base and share.
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:returns: The mount path prefix.
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"""
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return os.path.join(self.mount_point_base,
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NfsBrickConnector.get_hash_str(share))
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@staticmethod
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def get_hash_str(base_str):
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"""Returns string that represents SHA256 hash of base_str (in hex format).
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If base_str is a Unicode string, encode it to UTF-8.
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"""
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if isinstance(base_str, str):
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base_str = base_str.encode('utf-8')
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return hashlib.sha256(base_str).hexdigest()
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def connect_volume(self, volume):
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# The format info of nfs volumes is exposed via attachment_get
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# API hence it is not available in the connection info of
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# attachment object received from attachment_update and we
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# need to do this call
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vol_attachment = self.volume_api.attachment_get(
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self.client, self.attachment_obj.id)
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if (volume.encrypted or
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vol_attachment.connection_info['format'] == 'qcow2'):
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issue_type = 'Encrypted' if volume.encrypted else 'qcow2'
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msg = (_('%(issue_type)s volume creation for cinder nfs '
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'is not supported from glance_store. Failed to '
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'create volume %(volume_id)s')
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% {'issue_type': issue_type,
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'volume_id': volume.id})
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LOG.error(msg)
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raise exceptions.BackendException(msg)
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@utils.synchronized(self.connection_info['export'])
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def connect_volume_nfs():
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export = self.connection_info['export']
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vol_name = self.connection_info['name']
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mountpoint = self._get_mount_path(
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export, os.path.join(self.mount_point_base, 'nfs'))
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options = self.connection_info['options']
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mount.mount(
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'nfs', export, vol_name, mountpoint, self.host,
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self.root_helper, options)
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return {'path': os.path.join(mountpoint, vol_name)}
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device = connect_volume_nfs()
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return device
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def disconnect_volume(self, device):
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@utils.synchronized(self.connection_info['export'])
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def disconnect_volume_nfs():
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path, vol_name = device['path'].rsplit('/', 1)
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mount.umount(vol_name, path, self.host,
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self.root_helper)
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disconnect_volume_nfs()
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def extend_volume(self):
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raise NotImplementedError
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