def list(self, request, *args, **kwargs):
"""List all available subnets for the prefixes returned by the initial
query.
Filters
-------
- prefix: *Range or prefix to query against (e.g. '10.0.0.0/8')*
- prefix_size: *The maximum prefix length (mask, e.g. /32)*
"""
prefix = self.request.QUERY_PARAMS.get("prefix", None)
result = get_available_subnets(prefix)
prefix_size = self.request.QUERY_PARAMS.get("prefix_size", None)
if prefix_size is not None:
prefix_size = int(prefix_size)
result = [
prefix for prefix in result
if prefix.prefixlen() <= prefix_size
]
payload = [p.strNormal() for p in result]
payload = {
"prefix": prefix,
"prefixlen": prefix.split("/")[1],
"children": make_tree_from_ip(result).fields["children"]
}
return Response(payload, status=status.HTTP_200_OK)
def get_available_nodes(ips):
"""Find available subnets for each IP in 'ips' and return them as
FauxNodes.
"""
available_nodes = get_available_subnets(ips)
return nodes_from_ips(available_nodes, klass="available")
def test_get_available_subnets(self):
available = get_available_subnets("10.0.160.0/19")
self.assertTrue(available is not None)
# only 10.0.160.0/21 should be available
self.assertEqual(len(available), 1)
self.assertEqual(available[0], IP("10.0.160.0/21"))