def validate_route_nexthops(routes,
interfaces,
sources,
enable_color,
quiet=False):
"""
Validate between fib routes and lm interfaces
:param routes: list network_types.UnicastRoute (structured routes)
:param interfaces: dict<interface-name, InterfaceDetail>
"""
# record invalid routes in dict<error, list<route_db>>
invalid_routes = defaultdict(list)
# define error types
MISSING_NEXTHOP = "Nexthop does not exist"
INVALID_SUBNET = "Nexthop address is not in the same subnet as interface"
INVALID_LINK_LOCAL = "Nexthop address is not link local"
# return error type
error_msg = []
for route in routes:
dest = ipnetwork.sprint_prefix(route.dest)
# record invalid nexthops in dict<error, list<nexthops>>
invalid_nexthop = defaultdict(list)
for nextHop in get_route_nexthops(route):
nh = nextHop.address
if nh.ifName not in interfaces or not interfaces[
nh.ifName].info.isUp:
invalid_nexthop[MISSING_NEXTHOP].append(
ip_nexthop_to_str(nextHop))
continue
# if nexthop addr is v4, make sure it belongs to same subnets as
# interface addr
if ipnetwork.ip_version(nh.addr) == 4:
networks = interfaces[nh.ifName].info.networks
if networks is None:
# maintain backward compatbility
networks = []
for prefix in networks:
if ipnetwork.ip_version(
prefix.prefixAddress.addr
) == 4 and not ipnetwork.is_same_subnet(
nh.addr, prefix.prefixAddress.addr, "31"):
invalid_nexthop[INVALID_SUBNET].append(
ip_nexthop_to_str(nextHop))
# if nexthop addr is v6, make sure it's a link local addr
elif ipnetwork.ip_version(
nh.addr) == 6 and not ipnetwork.is_link_local(nh.addr):
invalid_nexthop[INVALID_LINK_LOCAL].append(
ip_nexthop_to_str(nextHop))
# build routes per error type
for k, v in invalid_nexthop.items():
invalid_routes[k].extend(build_routes([dest], v))
# if all good, then return early
if not invalid_routes:
if not quiet:
if enable_color:
click.echo(click.style("PASS", bg="green", fg="black"))
else:
click.echo("PASS")
print("Route validation successful")
return True, error_msg
# Something failed.. report it
if not quiet:
if enable_color:
click.echo(click.style("FAIL", bg="red", fg="black"))
else:
click.echo("FAIL")
print("Route validation failed")
# Output report per error type
for err, route_db in invalid_routes.items():
caption = "Error: {}".format(err)
if not quiet:
print_unicast_routes(caption, route_db)
else:
error_msg.append(caption)
return False, error_msg
def validate_route_nexthops(routes, interfaces, sources, enable_color,
quiet=False):
'''
Validate between fib routes and lm interfaces
:param routes: list ip_types.UnicastRoute (structured routes)
:param interfaces: dict<interface-name, InterfaceDetail>
'''
# record invalid routes in dict<error, list<route_db>>
invalid_routes = defaultdict(list)
# define error types
MISSING_NEXTHOP = 'Nexthop does not exist'
INVALID_SUBNET = 'Nexthop address is not in the same subnet as interface'
INVALID_LINK_LOCAL = 'Nexthop address is not link local'
# return error type
error_msg = []
for route in routes:
dest = ipnetwork.sprint_prefix(route.dest)
# record invalid nexthops in dict<error, list<nexthops>>
invalid_nexthop = defaultdict(list)
for nh in route.nexthops:
if nh.ifName not in interfaces or not interfaces[nh.ifName].info.isUp:
invalid_nexthop[MISSING_NEXTHOP].append(ip_nexthop_to_str(nh))
continue
# if nexthop addr is v4, make sure it belongs to same subnets as
# interface addr
if ipnetwork.ip_version(nh.addr) == 4:
for addr in interfaces[nh.ifName].info.v4Addrs:
if not ipnetwork.is_same_subnet(nh.addr, addr.addr, '31'):
invalid_nexthop[INVALID_SUBNET].append(ip_nexthop_to_str(nh))
# if nexthop addr is v6, make sure it's a link local addr
elif (ipnetwork.ip_version(nh.addr) == 6 and
not ipnetwork.is_link_local(nh.addr)):
invalid_nexthop[INVALID_LINK_LOCAL].append(ip_nexthop_to_str(nh))
# build routes per error type
for k, v in invalid_nexthop.items():
invalid_routes[k].extend(build_routes([dest], v))
# if all good, then return early
if not invalid_routes:
if not quiet:
if enable_color:
click.echo(click.style('PASS', bg='green', fg='black'))
else:
click.echo('PASS')
print('Route validation successful')
return True, error_msg
# Something failed.. report it
if not quiet:
if enable_color:
click.echo(click.style('FAIL', bg='red', fg='black'))
else:
click.echo('FAIL')
print('Route validation failed')
# Output report per error type
for err, route_db in invalid_routes.items():
caption = 'Error: {}'.format(err)
if not quiet:
print_routes(caption, route_db)
else:
error_msg.append(caption)
return False, error_msg
