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nxos_static_route: reconcile_candidate fails to remove 'track' routes (#53806)

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* * `reconcile_candidate()`
  * old code searched the ip route configs for a given prefix+nexthop and then tried to remove the route based on prefix+nexthop only; this would fail when a static route was configured with `track` values.
  * new code still looks for prefix+nexthop but uses the route config it finds on the device to remove it; e.g.
    * search for: `ip route 192.168.20.64/24 192.0.2.3`
    * find:       `ip route 192.168.20.64/24 192.0.2.3 track 1 10`
    * remove:  `no ip route 192.168.20.64/24 192.0.2.3 track 1 10`

* logic cleanups:
  * old code did a `show run` for every prefix. This can be a lot of data when there are large configs.
  * new code uses filters to only return the static route configs.
  * The filters now allow a common code path so no need for default vs vrf code paths

* `sanity` test: 100% Pass rate on N9K,N7K,N6K,N3K

- Bugfix Pull Request

`nxos_static_route`

* filter() does not return a list with python3

`filter()` was breaking pytest when it ran with python3, since it returns
an iterable instead of a list with python3.

Found that I didn't really need `filter()` anyway so just removed it

* restore var names /w/want/
This commit is contained in:
Chris Van Heuveln 2019-03-21 09:22:46 -04:00 committed by Trishna Guha
parent f885717f74
commit 7b44bc1ac9
2 changed files with 49 additions and 61 deletions
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65
lib/ansible/modules/network/nxos/nxos_static_route.py
View file

@ -100,54 +100,37 @@ from ansible.module_utils.network.common.config import CustomNetworkConfig
from ansible.module_utils.network.common.utils import remove_default_spec
def reconcile_candidate(module, candidate, prefix, w):
netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
state = w['state']
set_command = set_route_command(prefix, w, module)
remove_command = remove_route_command(prefix, w)
def reconcile_candidate(module, candidate, prefix, want):
state, vrf = want['state'], want['vrf']
if vrf == 'default':
parents = []
flags = " | include '^ip route'"
else:
parents = ['vrf context {0}'.format(vrf)]
flags = " | section '{0}' | include '^ ip route'".format(parents[0])
# Find existing routes in this vrf/default
netcfg = CustomNetworkConfig(indent=2, contents=get_config(module, flags=[flags]))
routes = str(netcfg).split('\n')
# strip whitespace from route strings
routes = [i.strip() for i in routes]
prefix_and_nh = 'ip route {0} {1}'.format(prefix, want['next_hop'])
existing = [i for i in routes if i.startswith(prefix_and_nh)]
proposed = set_route_command(prefix, want, module)
commands = []
yrc = remove_command.replace('no ', '')
if w['vrf'] == 'default':
netcfg = str(netcfg).split('\n')
ncfg = []
for line in netcfg:
# remove ip route commands of non-default vrfs from
# the running config just in case the same commands
# exist in default and non-default vrfs
if ' ip route' not in line:
ncfg.append(line)
if any(yrc in s for s in ncfg) and state == 'absent':
commands = [remove_command]
elif set_command not in ncfg and state == 'present':
if any(yrc in s for s in ncfg):
commands = [remove_command, set_command]
else:
commands = [set_command]
else:
parents = ['vrf context {0}'.format(w['vrf'])]
config = netcfg.get_section(parents)
if not isinstance(config, list):
config = config.split('\n')
config = [line.strip() for line in config]
if any(yrc in s for s in config) and state == 'absent':
commands = [remove_command]
elif set_command not in config and state == 'present':
if any(yrc in s for s in config):
commands = [remove_command, set_command]
else:
commands = [set_command]
if state == 'absent' and existing:
commands = ['no ' + existing[0]]
elif state == 'present' and proposed not in routes:
if existing:
commands = ['no ' + existing[0]]
commands.append(proposed)
if commands:
candidate.add(commands, parents=parents)
def remove_route_command(prefix, w):
return 'no ip route {0} {1}'.format(prefix, w['next_hop'])
def get_configured_track(module, ctrack):
check_track = '{0}'.format(ctrack)
track_exists = False

43
test/integration/targets/nxos_static_route/tests/common/sanity.yaml
View file

@ -22,6 +22,28 @@
- debug: msg="Test Track Feature {{ test_track_feature }}"
- name: Setup and teardown, remove test routes if present
nxos_static_route: &setup_teardown
aggregate:
- { prefix: "192.168.1.164/32", next_hop: "192.0.2.3" }
- { prefix: "192.168.20.64/24", next_hop: "192.0.2.3" }
- { prefix: "192.168.22.64/24", next_hop: "192.0.2.3" }
- { prefix: "192.168.24.64/24", next_hop: "192.0.2.3" }
vrf: "{{ item }}"
provider: "{{ connection }}"
state: absent
with_items: "{{ vrfs }}"
ignore_errors: yes
- name: Setup noise routes to ensure testing while non-test routes present
nxos_static_route:
prefix: "192.168.1.164/32"
next_hop: "192.0.2.3"
vrf: "{{ item }}"
provider: "{{ connection }}"
state: present
with_items: "{{ vrfs }}"
- block:
- name: create static route
nxos_static_route: &configure_static
@ -178,26 +200,9 @@
ignore_errors: yes
when: test_track_feature
- name: remove static route
nxos_static_route:
prefix: "192.168.20.64/24"
next_hop: "192.0.2.3"
route_name: testing
pref: 100
tag: 5500
vrf: "{{ item }}"
provider: "{{ connection }}"
state: absent
- name: teardown test routes
nxos_static_route: *setup_teardown
with_items: "{{ vrfs }}"
ignore_errors: yes
- name: remove static route aggregate
nxos_static_route:
aggregate:
- { prefix: "192.168.22.64/24", next_hop: "192.0.2.3" }
- { prefix: "192.168.24.64/24", next_hop: "192.0.2.3" }
provider: "{{ connection }}"
state: absent
ignore_errors: yes
- debug: msg="END connection={{ ansible_connection }} nxos_static_route sanity test"