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"""
Copyright (C) 2023 Michael Ablassmeier <abi@grinser.de>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
"""
import logging
from argparse import Namespace
from libvirtnbdbackup.virt.client import DomainDisk
log = logging.getLogger("nbdctx")
def get(args: Namespace, disk: DomainDisk) -> str:
"""Get required meta context string passed to nbd server based on
backup type"""
metaContext = ""
if args.level not in ("inc", "diff"):
return metaContext
if args.offline is True:
metaContext = f"qemu:dirty-bitmap:{args.cpt.name}"
else:
metaContext = f"qemu:dirty-bitmap:backup-{disk.target}"
logging.debug("Using NBD meta context [%s]", metaContext)
return metaContext
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