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storage.py
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storage.py
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#!/usr/bin/env python3
#
# Copyright (C) 2022 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# 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 <http://www.gnu.org/licenses/>.
#
import sys
import vyos.opmode
from vyos.util import cmd
# FIY: As of coreutils from Debian Buster and Bullseye,
# the outpt looks like this:
#
# $ df -h -t ext4 --output=source,size,used,avail,pcent
# Filesystem Size Used Avail Use%
# /dev/sda1 16G 7.6G 7.3G 51%
#
# Those field names are automatically normalized by vyos.opmode.run,
# so we don't touch them here,
# and only normalize values.
def _get_system_storage(only_persistent=False):
if not only_persistent:
cmd_str = 'df -h -x squashf'
else:
cmd_str = 'df -h -t ext4 --output=source,size,used,avail,pcent'
res = cmd(cmd_str)
return res
def _get_raw_data():
from re import sub as re_sub
from vyos.util import human_to_bytes
out = _get_system_storage(only_persistent=True)
lines = out.splitlines()
lists = [l.split() for l in lines]
res = {lists[0][i]: lists[1][i] for i in range(len(lists[0]))}
res["Size"] = human_to_bytes(res["Size"])
res["Used"] = human_to_bytes(res["Used"])
res["Avail"] = human_to_bytes(res["Avail"])
res["Use%"] = re_sub(r'%', '', res["Use%"])
return res
def _get_formatted_output():
return _get_system_storage()
def show(raw: bool):
if raw:
return _get_raw_data()
return _get_formatted_output()
if __name__ == '__main__':
try:
res = vyos.opmode.run(sys.modules[__name__])
if res:
print(res)
except (ValueError, vyos.opmode.Error) as e:
print(e)
sys.exit(1)

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