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misc.py
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misc.py
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# Copyright 2023 VyOS maintainers and contributors <maintainers@vyos.io>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see <http://www.gnu.org/licenses/>.
def begin(*args):
"""
Evaluate arguments in order and return the result of the *last* argument.
For combining multiple expressions in one statement. Useful for lambdas.
"""
return args[-1]
def begin0(*args):
"""
Evaluate arguments in order and return the result of the *first* argument.
For combining multiple expressions in one statement. Useful for lambdas.
"""
return args[0]
def install_into_config(conf, config_paths, override_prompt=True):
# Allows op-mode scripts to install values if called from an active config session
# config_paths: dict of config paths
# override_prompt: if True, user will be prompted before existing nodes are overwritten
if not config_paths:
return None
from vyos.config import Config
from vyos.utils.io import ask_yes_no
from vyos.utils.process import cmd
if not Config().in_session():
print('You are not in configure mode, commands to install manually from configure mode:')
for path in config_paths:
print(f'set {path}')
return None
count = 0
failed = []
for path in config_paths:
if override_prompt and conf.exists(path) and not conf.is_multi(path):
if not ask_yes_no(f'Config node "{node}" already exists. Do you want to overwrite it?'):
continue
try:
cmd(f'/opt/vyatta/sbin/my_set {path}')
count += 1
except:
failed.append(path)
if failed:
print(f'Failed to install {len(failed)} value(s). Commands to manually install:')
for path in failed:
print(f'set {path}')
if count > 0:
print(f'{count} value(s) installed. Use "compare" to see the pending changes, and "commit" to apply.')

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