🐛(maildomain) fix domain access creation

During a new domain creation, a call to dimail is made
to create user/allow on dimail side before owner role creation
on our side.
So when user/allow creation on dimain side fails,
the owner role is not created on our side.
Therefore the domain is created but invisible on the user interface.
The user will probably try to create the same domain again
and see the error message 'this domain already exists'.
To avoid this we make sure to create owner role on our side
despite dimail failure and set domain to failed status to retry
later dimail access creation.

src/backend/mailbox_manager/api/client/serializers.py

@@ -1,7 +1,9 @@
 """Client serializers for People's mailbox manager app."""
 
 import json
+from logging import getLogger
 
+from requests.exceptions import HTTPError
 from rest_framework import exceptions, serializers
 
 from core.api.client.serializers import UserSerializer
@@ -10,6 +12,8 @@ from core.models import User
 from mailbox_manager import enums, models
 from mailbox_manager.utils.dimail import DimailAPIClient
 
+logger = getLogger(__name__)
+
 
 class MailboxSerializer(serializers.ModelSerializer):
     """Serialize mailbox."""
@@ -190,14 +194,20 @@ class MailDomainAccessSerializer(serializers.ModelSerializer):
         """
         dimail = DimailAPIClient()
 
+        user = validated_data["user"]
+        domain = validated_data["domain"]
+
         if validated_data["role"] in [
             enums.MailDomainRoleChoices.ADMIN,
             enums.MailDomainRoleChoices.OWNER,
         ]:
-            dimail.create_user(validated_data["user"].sub)
-            dimail.create_allow(
-                validated_data["user"].sub, validated_data["domain"].name
-            )
+            try:
+                dimail.create_user(user.sub)
+                dimail.create_allow(user.sub, domain.name)
+            except HTTPError:
+                logger.exception("[DIMAIL] access creation failed %s")
+                domain.status = enums.MailDomainStatusChoices.FAILED
+                domain.save()
 
         return super().create(validated_data)