Fix idempotency issues 2 (#49333)

* Fix idempotency issues in set_manager_attributes

* Add changed status in set_bios_default_settings

lib/ansible/module_utils/redfish_utils.py

@@ -629,7 +629,7 @@ class RedfishUtils(object):
         response = self.post_request(self.root_uri + reset_bios_settings_uri, {}, HEADERS)
         if response['ret'] is False:
             return response
-        return {'ret': True}
+        return {'ret': True, 'changed': True, 'msg': "Set BIOS to default settings"}
 
     def set_one_time_boot_device(self, bootdevice):
         result = {}
@@ -664,7 +664,25 @@ class RedfishUtils(object):
         return {'ret': True}
 
     def set_manager_attributes(self, attr):
-        attributes = "Attributes"
+        result = {}
+        # Here I'm making the assumption that the key 'Attributes' is part of the URI.
+        # It may not, but in the hardware I tested with, getting to the final URI where
+        # the Manager Attributes are, appear to be part of a specific OEM extension.
+        key = "Attributes"
+
+        # Search for key entry and extract URI from it
+        response = self.get_request(self.root_uri + self.manager_uri + "/" + key)
+        if response['ret'] is False:
+            return response
+        result['ret'] = True
+        data = response['data']
+
+        if key not in data:
+            return {'ret': False, 'msg': "Key %s not found" % key}
+
+        # Check if attribute exists
+        if attr['mgr_attr_name'] not in data[key]:
+            return {'ret': False, 'msg': "Manager attribute %s not found" % attr['mgr_attr_name']}
 
         # Example: manager_attr = {\"name\":\"value\"}
         # Check if value is a number. If so, convert to int.
@@ -673,11 +691,15 @@ class RedfishUtils(object):
         else:
             manager_attr = "{\"%s\": \"%s\"}" % (attr['mgr_attr_name'], attr['mgr_attr_value'])
 
+        # Find out if value is already set to what we want. If yes, return
+        if data[key][attr['mgr_attr_name']] == attr['mgr_attr_value']:
+            return {'ret': True, 'changed': False, 'msg': "Manager attribute already set"}
+
         payload = {"Attributes": json.loads(manager_attr)}
-        response = self.patch_request(self.root_uri + self.manager_uri + "/" + attributes, payload, HEADERS)
+        response = self.patch_request(self.root_uri + self.manager_uri + "/" + key, payload, HEADERS)
         if response['ret'] is False:
             return response
-        return {'ret': True}
+        return {'ret': True, 'changed': True, 'msg': "Modified Manager attribute %s" % attr['mgr_attr_name']}
 
     def set_bios_attributes(self, attr):
         result = {}