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#!/usr/bin/env python3
# Converts "system gateway-address" option to "protocols static route 0.0.0.0/0 next-hop $gw"
import sys
from vyos.configtree import ConfigTree
if len(sys.argv) < 2:
print("Must specify file name!")
sys.exit(1)
file_name = sys.argv[1]
with open(file_name, 'r') as f:
config_file = f.read()
config = ConfigTree(config_file)
if not config.exists(['system', 'gateway-address']):
# Nothing to do
sys.exit(0)
else:
# Save the address
gw = config.return_value(['system', 'gateway-address'])
# Create the node for the new syntax
# Note: next-hop is a tag node, gateway address is its child, not a value
config.set(['protocols', 'static', 'route', '0.0.0.0/0', 'next-hop', gw])
# Delete the node with the old syntax
config.delete(['system', 'gateway-address'])
# Now, the interesting part. Both route and next-hop are supposed to be tag nodes,
# which you can verify with "cli-shell-api isTag $configPath".
# They must be formatted as such to load correctly.
config.set_tag(['protocols', 'static', 'route'])
config.set_tag(['protocols', 'static', 'route', '0.0.0.0/0', 'next-hop'])
try:
with open(file_name, 'w') as f:
f.write(config.to_string())
except OSError as e:
print("Failed to save the modified config: {}".format(e))
sys.exit(1)
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