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patch_appliance.py
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patch_appliance.py
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#!/usr/bin/env python
#
# Copyright (C) 2015 GNS3 Technologies Inc.
#
# 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 <http://www.gnu.org/licenses/>.
"""
This file is sample tools for patching all appliances. It's useful when
you need to add a property to all appliances.
"""
import glob
import sys
import json
import jsonschema
def ask(question, type='string', optional=False):
while True:
if optional:
sys.stdout.write(question + "(optional leave blank for skip) : ")
else:
sys.stdout.write(question + ": ")
sys.stdout.flush()
val = sys.stdin.readline().strip()
if len(val) == 0:
if optional:
return None
continue
if type == 'integer':
try:
val = int(val)
except ValueError:
continue
sys.stdout.write("\n")
return val
def ask_multiple(question, options, optional=False):
while True:
for i, option in enumerate(options):
question += '\n{}) {}'.format(i + 1, option)
question += '\n'
answer = ask(question, type='integer', optional=optional)
if answer is None:
if optional:
return None
else:
if answer > 0 and answer <= len(options):
return options[answer - 1]
with open('schemas/appliance_v7.json') as f:
schema = json.load(f)
for appliance in glob.glob('appliances/*.gns3a'):
print('=> Patch', appliance)
# Load appliance
with open(appliance) as f:
config = json.load(f)
# Our patch
if not 'qemu' in config:
continue
config['qemu']['kvm'] = ask_multiple('KVM support for {}'.format(appliance), ['require', 'allow', 'disable'])
# Validate our changes
jsonschema.validate(config, schema)
# Save
with open(appliance, 'w') as f:
json.dump(config, f, indent=4)