def __enforce_se_consistency(self, route):
route_original = etree.tostring(route)
if isinstance(route, str):
root = etree.fromstring(route)
else:
root = route
# Use GENIv3 namespace as used in base request formatter
ns = root.nsmap[None]
# Verify that interfaces (from node) are all defined in links
interfaces = root.xpath("//x:node//x:interface", namespaces={"x": ns})
links = root.xpath("//x:link", namespaces={"x": ns})
for link in links:
local_interfaces = link.xpath(
"x:interface_ref", namespaces={"x": ns})
for interface in interfaces:
# Check for inconsistent interfaces and remove them, i.e.
# not defined in link's client_id or on its interfaces
if URNUtils.get_datapath_and_port_from_datapath_id(
interface.get("client_id"))[0] not in \
link.get("client_id") \
or interface.get("client_id") not in \
[x.get("client_id") for x in local_interfaces]:
logger.debug("SE request: removing interface not in use \
(%s)" % etree.tostring(interface, pretty_print=True))
interface.getparent().remove(interface)
if len(links) == 0:
try:
interfaces[0].getparent().getparent().remove(
interfaces[0].getparent())
logger.debug("SE request: removing request due to \
missing links")
except:
pass
if len(interfaces) == 0:
try:
links[0].getparent().remove(links[0])
logger.debug("SE request: removing request due to \
missing interfaces")
except:
pass
route_new = etree.tostring(route)
if route_original != route_new:
logger.info(
"Route (after consistency check)=%s" %
(etree.tostring(route, pretty_print=True),))
def add_vlan_to_link(self, link_cid, iface_cid):
"""
Add vlan to component ID of link's interface
when using a newly formatted RSpec.
This format is used: "urn+...+datapath+<dpid>_<port>+vlan=<vlan>.
"""
if "vlan=" in link_cid:
urn_src, vlan_src, urn_dst, vlan_dst = URNUtils.get_fields_from_domain_link_id(link_cid)
if_vlan_pairs = {urn_src: vlan_src, urn_dst: vlan_dst}
# if_dpid = URNUtils.get_datapath_from_datapath_id(if_cid)
if_dpid, if_port = URNUtils.get_datapath_and_port_from_datapath_id(iface_cid)
if_dpid_port = "%s_%s" % (if_dpid, if_port)
for if_vlan in if_vlan_pairs.keys():
if if_dpid_port in if_vlan:
iface_cid += "+vlan=%s" % if_vlan_pairs[if_vlan]
break
return iface_cid
