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tests: Adding API verify_bgp_attributes() to bgp.py

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This API is to verify BGP attribute values set by route maps

Signed-off-by: Kuldeep Kashyap <kashyapk@vmware.com>
This commit is contained in:
Kuldeep Kashyap 2019-09-25 11:16:44 +00:00
parent 5300176ff8
commit 7f55cb6a88
1 changed files with 144 additions and 0 deletions
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144
tests/topotests/lib/bgp.py
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@ -1229,6 +1229,150 @@ def verify_bgp_timers_and_functionality(tgen, topo, input_dict):
return True
@retry(attempts=3, wait=4, return_is_str=True)
def verify_bgp_attributes(tgen, addr_type, dut, static_routes, rmap_name,
input_dict, seq_id=None):
"""
API will verify BGP attributes set by Route-map for given prefix and
DUT. it will run "show bgp ipv4/ipv6 {prefix_address} json" command
in DUT to verify BGP attributes set by route-map, Set attributes
values will be read from input_dict and verified with command output.
* `tgen`: topogen object
* `addr_type` : ip type, ipv4/ipv6
* `dut`: Device Under Test
* `static_routes`: Static Routes for which BGP set attributes needs to be
verified
* `rmap_name`: route map name for which set criteria needs to be verified
* `input_dict`: defines for which router, AS numbers needs
* `seq_id`: sequence number of rmap, default is None
Usage
-----
input_dict = {
"r3": {
"route_maps": {
"rmap_match_pf_1_ipv4": [{
"action": "permit",
'seq_id': '5',
"match": {
addr_type: {
"prefix_lists": "pf_list_1_" + addr_type
}
},
"set": {
"localpref": 150,
"weight": 100
}
}],
"rmap_match_pf_2_ipv6": [{
"action": "permit",
'seq_id': '5',
"match": {
addr_type: {
"prefix_lists": "pf_list_1_" + addr_type
}
},
"set": {
"med": 50
}
}]
}
}
}
result = verify_bgp_attributes(tgen, 'ipv4', "r1", "10.0.20.1/32",
rmap_match_pf_1_ipv4, input_dict)
Returns
-------
errormsg(str) or True
"""
logger.debug("Entering lib API: verify_bgp_attributes()")
for router, rnode in tgen.routers().iteritems():
if router != dut:
continue
logger.info('Verifying BGP set attributes for dut {}:'.format(router))
for static_route in static_routes:
cmd = "show bgp {} {} json".format(addr_type, static_route)
show_bgp_json = run_frr_cmd(rnode, cmd, isjson=True)
print("show_bgp_json $$$$$", show_bgp_json)
dict_to_test = []
tmp_list = []
for rmap_router in input_dict.keys():
for rmap, values in input_dict[rmap_router][
"route_maps"].items():
print("rmap == rmap_name $$$$1", rmap, rmap_name)
if rmap == rmap_name:
print("rmap == rmap_name $$$$", rmap, rmap_name)
dict_to_test = values
for rmap_dict in values:
if seq_id is not None:
if type(seq_id) is not list:
seq_id = [seq_id]
if "seq_id" in rmap_dict:
rmap_seq_id = \
rmap_dict["seq_id"]
for _seq_id in seq_id:
if _seq_id == rmap_seq_id:
tmp_list.append(rmap_dict)
if tmp_list:
dict_to_test = tmp_list
print("dict_to_test $$$$", dict_to_test)
for rmap_dict in dict_to_test:
if "set" in rmap_dict:
for criteria in rmap_dict["set"].keys():
if criteria not in show_bgp_json[
"paths"][0]:
errormsg = ("BGP attribute: {}"
" is not found in"
" cli: {} output "
"in router {}".
format(criteria,
cmd,
router))
return errormsg
if rmap_dict["set"][criteria] == \
show_bgp_json["paths"][0][
criteria]:
logger.info("Verifying BGP "
"attribute {} for"
" route: {} in "
"router: {}, found"
" expected value:"
" {}".
format(criteria,
static_route,
dut,
rmap_dict[
"set"][
criteria]))
else:
errormsg = \
("Failed: Verifying BGP "
"attribute {} for route:"
" {} in router: {}, "
" expected value: {} but"
" found: {}".
format(criteria,
static_route,
dut,
rmap_dict["set"]
[criteria],
show_bgp_json[
'paths'][
0][criteria]))
return errormsg
logger.debug("Exiting lib API: verify_bgp_attributes()")
return True
@retry(attempts=3, wait=2, return_is_str=True)
def verify_best_path_as_per_bgp_attribute(tgen, addr_type, router, input_dict,
attribute):