Fix: Handle Facts Gathering Failure for Deleted Sub-Interfaces (#1149)

* Fix: Handle Facts Gathering Failure for Deleted Sub-Interfaces

* Added tests

* remove unused importe

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

changelogs/fragments/fix_facts_gather.yaml

@@ -0,0 +1,3 @@
+---
+bugfixes:
+  - Fixes an issue with facts gathering failing when an sub interface is in a deleted state.

plugins/module_utils/network/ios/facts/legacy/base.py

@@ -285,7 +285,12 @@ def populate_interfaces(self, interfaces):
 
     def populate_ipv4_interfaces(self, data):
         for key, value in data.items():
-            self.facts["interfaces"][key]["ipv4"] = list()
+            try:
+                self.facts["interfaces"][key]["ipv4"] = list()
+            except KeyError:
+                self.facts["interfaces"][key] = dict()
+                self.facts["interfaces"][key]["ipv4"] = list()
+                self.parse_deleted_status(key, value)
             primary_address = addresses = []
             primary_address = re.findall(r"Internet address is (.+)$", value, re.M)
             addresses = re.findall(r"Secondary address (.+)$", value, re.M)
@@ -305,6 +310,7 @@ def populate_ipv6_interfaces(self, data):
             except KeyError:
                 self.facts["interfaces"][key] = dict()
                 self.facts["interfaces"][key]["ipv6"] = list()
+                self.parse_deleted_status(key, value)
             addresses = re.findall(r"\s+(.+), subnet", value, re.M)
             subnets = re.findall(r", subnet is (.+)$", value, re.M)
             for addr, subnet in zip(addresses, subnets):
@@ -370,6 +376,11 @@ def parse_interfaces(self, data):
                     parsed[key] = line
         return parsed
 
+    def parse_deleted_status(self, interface, value):
+        status = self.parse_operstatus(value)
+        if status == "deleted":
+            self.facts["interfaces"][interface]["operstatus"] = status
+
     def parse_description(self, data):
         match = re.search(r"Description: (.+)$", data, re.M)
         if match:

tests/unit/modules/network/ios/fixtures/ios_facts_show_ip_interface

@@ -0,0 +1,6 @@
+Tunnel1110 is up, line protocol is up
+  Internet address is 10.10.10.2/30
+GigabitEthernet2/5/5 is up, line protocol is up
+  Internet protocol processing disabled
+GigabitEthernet2/5/5.1874 is deleted, line protocol is down
+  Internet protocol processing disabled

tests/unit/modules/network/ios/test_ios_facts.py

@@ -199,3 +199,28 @@ def test_ios_facts_neighbors(self):
             result["ansible_facts"]["ansible_net_neighbors"]["GigabitEthernet3"],
             [{"host": "Rtest", "port": "Gi1", "ip": "10.3.0.3"}],
         )
+
+    def test_ios_facts_interfaces(self):
+        set_module_args(dict(gather_subset="interfaces"))
+        result = self.execute_module()
+        self.assertEqual(
+            result["ansible_facts"]["ansible_net_interfaces"]["GigabitEthernet2/5/5.1874"],
+            {"ipv4": [], "operstatus": "deleted"},
+        )
+        self.assertEqual(
+            result["ansible_facts"]["ansible_net_interfaces"]["Tunnel1110"],
+            {
+                "bandwidth": None,
+                "description": None,
+                "duplex": None,
+                "ipv4": [
+                    {"address": "10.10.10.2", "subnet": "30"},
+                ],
+                "lineprotocol": "up",
+                "macaddress": None,
+                "mediatype": None,
+                "mtu": None,
+                "operstatus": "up",
+                "type": None,
+            },
+        )