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2 changes: 1 addition & 1 deletion src/sonic-config-engine/sonic-cfggen
Original file line number Diff line number Diff line change
Expand Up @@ -295,7 +295,7 @@ def main():
template = jinja2.Template('{{' + args.var + '}}')
print(template.render(data))

if args.var_json != None:
if args.var_json != None and args.var_json in data:
if args.key != None:
print(json.dumps(FormatConverter.to_serialized(data[args.var_json], args.key), indent=4, cls=minigraph_encoder))
else:
Expand Down
10 changes: 10 additions & 0 deletions src/sonic-config-engine/tests/test_cfggen.py
Original file line number Diff line number Diff line change
Expand Up @@ -330,3 +330,13 @@ def test_minigraph_sub_port_interfaces(self, check_stderr=True):
output = subprocess.check_output("sed -i \'s/%s/%s/g\' %s" % (BACKEND_TOR_ROUTER, TOR_ROUTER, self.sample_graph_simple), shell=True)

self.test_jinja_expression(self.sample_graph_simple, TOR_ROUTER)

def test_show_run_acl(self):
argument = '-a \'{"key1":"value"}\' --var-json ACL_RULE'
output = self.run_script(argument)
self.assertEqual(output, '')

def test_show_run_interfaces(self):
argument = '-a \'{"key1":"value"}\' --var-json INTERFACE'
output = self.run_script(argument)
self.assertEqual(output, '')