109 lines
2.9 KiB
Python
109 lines
2.9 KiB
Python
"""
|
|
Manage virtual machines.
|
|
|
|
Usage: na-vmctl [options] status <machine>
|
|
na-vmctl [options] is-running <machine>
|
|
na-vmctl [options] start <machine>
|
|
na-vmctl [options] shutdown <machine>
|
|
na-vmctl [options] set-vcpus <machine> <nvcpus>
|
|
na-vmctl [options] set-memory <machine> <memory>
|
|
na-vmctl [options] list [-a|--all]
|
|
|
|
Options:
|
|
-c, --config <file> config file [default: /etc/node-agent/config.yaml]
|
|
-l, --loglvl <lvl> logging level
|
|
-a, --all list all machines including inactive
|
|
"""
|
|
|
|
import logging
|
|
import pathlib
|
|
import sys
|
|
|
|
import libvirt
|
|
from docopt import docopt
|
|
|
|
from ..exceptions import VMError, VMNotFound
|
|
from ..session import LibvirtSession
|
|
from ..vm import VirtualMachine
|
|
|
|
|
|
logger = logging.getLogger(__name__)
|
|
levels = logging.getLevelNamesMapping()
|
|
|
|
libvirt.registerErrorHandler(lambda userdata, err: None, ctx=None)
|
|
|
|
|
|
class Color:
|
|
RED = '\033[31m'
|
|
GREEN = '\033[32m'
|
|
YELLOW = '\033[33m'
|
|
NONE = '\033[0m'
|
|
|
|
|
|
class Table:
|
|
|
|
def __init__(self, whitespace: str = '\t'):
|
|
self.__rows = []
|
|
self.__whitespace = whitespace
|
|
|
|
def header(self, columns: list):
|
|
self.__rows.insert(0, [str(col) for col in columns])
|
|
|
|
def row(self, row: list):
|
|
self.__rows.append([str(col) for col in row])
|
|
|
|
def rows(self, rows: list):
|
|
for row in rows:
|
|
self.row(row)
|
|
|
|
def print(self):
|
|
widths = [max(map(len, col)) for col in zip(*self.__rows)]
|
|
for row in self.__rows:
|
|
print(self.__whitespace.join(
|
|
(val.ljust(width) for val, width in zip(row, widths))))
|
|
|
|
|
|
def cli():
|
|
args = docopt(__doc__)
|
|
config = pathlib.Path(args['--config']) or None
|
|
loglvl = None
|
|
machine = args['<machine>']
|
|
|
|
if args['--loglvl']:
|
|
loglvl = args['--loglvl'].upper()
|
|
|
|
if loglvl in levels:
|
|
logging.basicConfig(level=levels[loglvl])
|
|
|
|
with LibvirtSession() as session:
|
|
try:
|
|
if args['list']:
|
|
table = Table()
|
|
table.header(['NAME', 'STATE', 'AUTOSTART'])
|
|
for vm_ in session.list_machines():
|
|
table.row([vm_.name, vm_.status, vm_.is_autostart])
|
|
table.print()
|
|
sys.exit()
|
|
|
|
vm = session.get_machine(machine)
|
|
if args['status']:
|
|
print(vm.status)
|
|
if args['is-running']:
|
|
if vm.is_running:
|
|
print('running')
|
|
else:
|
|
sys.exit(vm.status)
|
|
if args['start']:
|
|
vm.start()
|
|
print(f'{vm.name} started')
|
|
if args['shutdown']:
|
|
vm.shutdown('NORMAL')
|
|
except VMNotFound as nferr:
|
|
sys.exit(f'{Color.RED}VM {machine} not found.{Color.NONE}')
|
|
except VMError as vmerr:
|
|
sys.exit(f'{Color.RED}{vmerr}{Color.NONE}')
|
|
|
|
|
|
if __name__ == '__main__':
|
|
cli()
|