Get interfaces for Proxmox LXC containers (#8713)

* Get interfaces for Proxmox LXC containers

* Add changelog

* Don't use bare except

* Update changelog from suggestion

Co-authored-by: Felix Fontein <felix@fontein.de>

* Only lookup interfaces for running containers

* Ignore not implemented status

* Check that key exists in properties dict

* define ignore errors in mock

* Use not in

---------

Co-authored-by: Felix Fontein <felix@fontein.de>

changelogs/fragments/8713-proxmox_lxc_interfaces.yml

@@ -0,0 +1,2 @@
+minor_changes:
+  - proxmox inventory plugin - add new fact for LXC interface details (https://github.com/ansible-collections/community.general/pull/8713).

plugins/inventory/proxmox.py

@@ -362,6 +362,34 @@ class InventoryModule(BaseInventoryPlugin, Constructable, Cacheable):
             except Exception:
                 return None
 
+    def _get_lxc_interfaces(self, properties, node, vmid):
+        status_key = self._fact('status')
+
+        if status_key not in properties or not properties[status_key] == 'running':
+            return
+
+        ret = self._get_json("%s/api2/json/nodes/%s/lxc/%s/interfaces" % (self.proxmox_url, node, vmid), ignore_errors=[501])
+        if not ret:
+            return
+
+        result = []
+
+        for iface in ret:
+            result_iface = {
+                'name': iface['name'],
+                'hwaddr': iface['hwaddr']
+            }
+
+            if 'inet' in iface:
+                result_iface['inet'] = iface['inet']
+
+            if 'inet6' in iface:
+                result_iface['inet6'] = iface['inet6']
+
+            result.append(result_iface)
+
+        properties[self._fact('lxc_interfaces')] = result
+
     def _get_agent_network_interfaces(self, node, vmid, vmtype):
         result = []
 
@@ -526,6 +554,9 @@ class InventoryModule(BaseInventoryPlugin, Constructable, Cacheable):
             self._get_vm_config(properties, node, vmid, ittype, name)
             self._get_vm_snapshots(properties, node, vmid, ittype, name)
 
+            if ittype == 'lxc':
+                self._get_lxc_interfaces(properties, node, vmid)
+
         # ensure the host satisfies filters
         if not self._can_add_host(name, properties):
             return None

tests/unit/plugins/inventory/test_proxmox.py

@@ -37,7 +37,7 @@ def get_auth():
 
 # NOTE: when updating/adding replies to this function,
 # be sure to only add only the _contents_ of the 'data' dict in the API reply
-def get_json(url):
+def get_json(url, ignore_errors=None):
     if url == "https://localhost:8006/api2/json/nodes":
         # _get_nodes
         return [{"type": "node",