fix: Local instance is always reachable to itself

Part-of: <https://dev.funkwhale.audio/funkwhale/funkwhale/-/merge_requests/2321>

api/funkwhale_api/federation/tasks.py

@@ -633,7 +633,12 @@ def fetch_collection(url, max_pages, channel, is_page=False):
 def check_all_remote_instance_availability():
     domains = models.Domain.objects.all().prefetch_related()
     for domain in domains:
-        check_single_remote_instance_availability(domain)
+        if domain == settings.FUNKWHALE_HOSTNAME:
+            # No need to check the instance itself: Its always reachable
+            domain.reachable = True
+            domain.last_successful_contact = timezone.now()
+        else:
+            check_single_remote_instance_availability(domain)
 
 
 @celery.app.task(name="federation.check_single_remote_instance_availability")

api/funkwhale_api/music/models.py

@@ -1173,7 +1173,9 @@ class LibraryQuerySet(models.QuerySet):
             )
             .values_list("target__channel__library", flat=True)
         )
-        domains_reachable = federation_models.Domain.objects.filter(reachable=True)
+        domains_reachable = federation_models.Domain.objects.filter(
+            reachable=True
+        ) | federation_models.Domain.objects.filter(name=settings.FUNKWHALE_HOSTNAME)
 
         return self.filter(
             me_query