WAF only license triggers 'This feature is currently not licensed.', 'error-code': 'IMP-10129'}

[andreireiand]

for a WAF only FLEX AWS license, below error sometimes happens:

File "/usr/lib/python3.8/site-packages/imperva_sdk/DbService.py", line 100, in _get_all_db_services
res = connection._mx_api('GET', '/conf/dbServices/%s/%s' % (Site, ServerGroup))
File "/usr/lib/python3.8/site-packages/imperva_sdk/MxConnection.py", line 261, in _mx_api
raise MxException("MX returned errors - %s" % str(error_message))
imperva_sdk.core.MxException: MX returned errors - [{'description': 'This feature is currently not licensed.', 'error-code': 'IMP-10129'}]

The fix that seems to work (for me) is:

ServerGroup.py - get_all_db_services(self) be slightly modified to return empty list [] when an exception happens =>

def get_all_db_services(self):
try:
return self._connection.get_all_db_services(Site=self._Site, ServerGroup=self.Name)
except:
return []