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various improvements

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ge
2023-12-03 23:25:34 +03:00
parent 0d5246e95e
commit b0fa1b7b25
36 changed files with 842 additions and 277 deletions
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6
compute/storage/__init__.py
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@@ -5,13 +5,13 @@
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# Compute 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
# along with Compute. If not, see <http://www.gnu.org/licenses/>.
from .pool import StoragePool
from .volume import DiskConfig, Volume, VolumeConfig
from .volume import Volume, VolumeConfig

4
compute/storage/pool.py
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@@ -5,13 +5,13 @@
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# Compute 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
# along with Compute. If not, see <http://www.gnu.org/licenses/>.
"""Manage storage pools."""

55
compute/storage/volume.py
View File

@@ -5,26 +5,25 @@
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# Compute 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
# along with Compute. If not, see <http://www.gnu.org/licenses/>.
"""Manage storage volumes."""
from dataclasses import dataclass
from pathlib import Path
from time import time
from typing import Union
import libvirt
from lxml import etree
from lxml.builder import E
from compute.common import DeviceConfig, EntityConfig
from compute.common import EntityConfig
from compute.utils import units
@@ -64,54 +63,6 @@ class VolumeConfig(EntityConfig):
return etree.tostring(xml, encoding='unicode', pretty_print=True)
@dataclass
class DiskConfig(DeviceConfig):
"""
Disk XML config builder.
Generate XML config for attaching or detaching storage volumes
to compute instances.
"""
disk_type: str
source: str | Path
target: str
readonly: bool = False
def to_xml(self) -> str:
"""Return XML config for libvirt."""
xml = E.disk(type=self.disk_type, device='disk')
xml.append(E.driver(name='qemu', type='qcow2', cache='writethrough'))
if self.disk_type == 'file':
xml.append(E.source(file=str(self.source)))
xml.append(E.target(dev=self.target, bus='virtio'))
if self.readonly:
xml.append(E.readonly())
return etree.tostring(xml, encoding='unicode', pretty_print=True)
@classmethod
def from_xml(cls, xml: Union[str, etree.Element]) -> 'DiskConfig': # noqa: UP007
"""
Return :class:`DiskConfig` instance using existing XML config.
:param xml: Disk device XML configuration as :class:`str` or lxml
:class:`etree.Element` object.
"""
if isinstance(xml, str):
xml = etree.fromstring(xml)
disk_params = {
'disk_type': xml.get('type'),
'source': xml.find('source').get('file'),
'target': xml.find('target').get('dev'),
'readonly': False if xml.find('readonly') is None else True, # noqa: SIM211
}
for param in disk_params:
if disk_params[param] is None:
msg = f"Bad XML config: parameter '{param}' is not defined"
raise ValueError(msg)
return cls(**disk_params)
class Volume:
"""Storage volume manipulating class."""