5 files changed, 27 insertions, 6 deletions
diff --git a/app/models/account.rb b/app/models/account.rb
index 82d4d10de..e56db3126 100644
--- a/app/models/account.rb
+++ b/app/models/account.rb
@@ -415,7 +415,7 @@ class Account < ApplicationRecord
 
     def inboxes
       urls = reorder(nil).where(protocol: :activitypub).pluck(Arel.sql("distinct coalesce(nullif(accounts.shared_inbox_url, ''), accounts.inbox_url)"))
-      DeliveryFailureTracker.filter(urls)
+      DeliveryFailureTracker.without_unavailable(urls)
     end
 
     def search_for(terms, limit = 10, offset = 0)
diff --git a/app/models/account_alias.rb b/app/models/account_alias.rb
index 3d0b5d188..792e9e8d4 100644
--- a/app/models/account_alias.rb
+++ b/app/models/account_alias.rb
@@ -16,7 +16,6 @@ class AccountAlias < ApplicationRecord
   belongs_to :account
 
   validates :acct, presence: true, domain: { acct: true }
-  validates :uri, presence: true
   validates :uri, uniqueness: { scope: :account_id }
   validate :validate_target_account
 
@@ -47,7 +46,7 @@ class AccountAlias < ApplicationRecord
   end
 
   def validate_target_account
-    if uri.nil?
+    if uri.blank?
       errors.add(:acct, I18n.t('migrations.errors.not_found'))
     elsif ActivityPub::TagManager.instance.uri_for(account) == uri
       errors.add(:acct, I18n.t('migrations.errors.move_to_self'))
diff --git a/app/models/announcement.rb b/app/models/announcement.rb
index a4e427b49..c493604c2 100644
--- a/app/models/announcement.rb
+++ b/app/models/announcement.rb
@@ -14,7 +14,7 @@
 #  created_at   :datetime         not null
 #  updated_at   :datetime         not null
 #  published_at :datetime
-#  status_ids   :bigint           is an Array
+#  status_ids   :bigint(8)        is an Array
 #
 
 class Announcement < ApplicationRecord
diff --git a/app/models/relay.rb b/app/models/relay.rb
index 8c8a97db3..870f31979 100644
--- a/app/models/relay.rb
+++ b/app/models/relay.rb
@@ -27,7 +27,7 @@ class Relay < ApplicationRecord
     payload     = Oj.dump(follow_activity(activity_id))
 
     update!(state: :pending, follow_activity_id: activity_id)
-    DeliveryFailureTracker.new(inbox_url).track_success!
+    DeliveryFailureTracker.track_success!(inbox_url)
     ActivityPub::DeliveryWorker.perform_async(payload, some_local_account.id, inbox_url)
   end
 
@@ -36,7 +36,7 @@ class Relay < ApplicationRecord
     payload     = Oj.dump(unfollow_activity(activity_id))
 
     update!(state: :idle, follow_activity_id: nil)
-    DeliveryFailureTracker.new(inbox_url).track_success!
+    DeliveryFailureTracker.track_success!(inbox_url)
     ActivityPub::DeliveryWorker.perform_async(payload, some_local_account.id, inbox_url)
   end
 
diff --git a/app/models/unavailable_domain.rb b/app/models/unavailable_domain.rb
new file mode 100644
index 000000000..e2918b586
--- /dev/null
+++ b/app/models/unavailable_domain.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+# == Schema Information
+#
+# Table name: unavailable_domains
+#
+#  id         :bigint(8)        not null, primary key
+#  domain     :string           default(""), not null
+#  created_at :datetime         not null
+#  updated_at :datetime         not null
+#
+
+class UnavailableDomain < ApplicationRecord
+  include DomainNormalizable
+
+  after_commit :reset_cache!
+
+  private
+
+  def reset_cache!
+    Rails.cache.delete('unavailable_domains')
+  end
+end