Change delivery failure tracking to work with hostnames instead of URLs (#13437)

app/controllers/activitypub/inboxes_controller.rb

@@ -49,7 +49,7 @@ class ActivityPub::InboxesController < ActivityPub::BaseController
       ResolveAccountWorker.perform_async(signed_request_account.acct)
     end
 
-    DeliveryFailureTracker.track_inverse_success!(signed_request_account)
+    DeliveryFailureTracker.reset!(signed_request_account.inbox_url)
   end
 
   def process_payload

app/controllers/admin/instances_controller.rb

@@ -19,7 +19,7 @@ module Admin
       @followers_count = Follow.where(target_account: Account.where(domain: params[:id])).count
       @reports_count   = Report.where(target_account: Account.where(domain: params[:id])).count
       @blocks_count    = Block.where(target_account: Account.where(domain: params[:id])).count
-      @available       = DeliveryFailureTracker.available?(Account.select(:shared_inbox_url).where(domain: params[:id]).first&.shared_inbox_url)
+      @available       = DeliveryFailureTracker.available?(params[:id])
       @media_storage   = MediaAttachment.where(account: Account.where(domain: params[:id])).sum(:file_file_size)
       @private_comment = @domain_block&.private_comment
       @public_comment  = @domain_block&.public_comment

app/lib/delivery_failure_tracker.rb

@@ -3,47 +3,53 @@
 class DeliveryFailureTracker
   FAILURE_DAYS_THRESHOLD = 7
 
-  def initialize(inbox_url)
-    @inbox_url = inbox_url
+  def initialize(url_or_host)
+    @host = url_or_host.start_with?('https://') || url_or_host.start_with?('http://') ? Addressable::URI.parse(url_or_host).normalized_host : url_or_host
   end
 
   def track_failure!
     Redis.current.sadd(exhausted_deliveries_key, today)
-    Redis.current.sadd('unavailable_inboxes', @inbox_url) if reached_failure_threshold?
+    UnavailableDomain.create(domain: @host) if reached_failure_threshold?
   end
 
   def track_success!
     Redis.current.del(exhausted_deliveries_key)
-    Redis.current.srem('unavailable_inboxes', @inbox_url)
+    UnavailableDomain.find_by(domain: @host)&.destroy
   end
 
   def days
     Redis.current.scard(exhausted_deliveries_key) || 0
   end
 
-  class << self
-    def filter(arr)
-      arr.reject(&method(:unavailable?))
-    end
+  def available?
+    !UnavailableDomain.where(domain: @host).exists?
+  end
 
-    def unavailable?(url)
-      Redis.current.sismember('unavailable_inboxes', url)
+  alias reset! track_success!
+
+  class << self
+    def without_unavailable(urls)
+      unavailable_domains_map = Rails.cache.fetch('unavailable_domains') { UnavailableDomain.pluck(:domain).each_with_object({}) { |domain, hash| hash[domain] = true } }
+
+      urls.reject do |url|
+        host = Addressable::URI.parse(url).normalized_host
+        unavailable_domains_map[host]
+      end
     end
 
     def available?(url)
-      !unavailable?(url)
+      new(url).available?
     end
 
-    def track_inverse_success!(from_account)
-      new(from_account.inbox_url).track_success! if from_account.inbox_url.present?
-      new(from_account.shared_inbox_url).track_success! if from_account.shared_inbox_url.present?
+    def reset!(url)
+      new(url).reset!
     end
   end
 
   private
 
   def exhausted_deliveries_key
-    "exhausted_deliveries:#{@inbox_url}"
+    "exhausted_deliveries:#{@host}"
   end
 
   def today

app/models/account.rb

@@ -413,7 +413,7 @@ 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)

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

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
 

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

app/views/admin/accounts/show.html.haml

@@ -171,12 +171,12 @@
             %th= t('admin.accounts.inbox_url')
             %td
               = @account.inbox_url
-              = fa_icon DeliveryFailureTracker.unavailable?(@account.inbox_url) ? 'times' : 'check'
+              = fa_icon DeliveryFailureTracker.available?(@account.inbox_url) ? 'check' : 'times'
           %tr
             %th= t('admin.accounts.shared_inbox_url')
             %td
               = @account.shared_inbox_url
-              = fa_icon DeliveryFailureTracker.unavailable?(@account.shared_inbox_url) ? 'times' : 'check'
+              = fa_icon DeliveryFailureTracker.available?(@account.shared_inbox_url) ? 'check': 'times'
 
   %div{ style: 'overflow: hidden' }
     %div{ style: 'float: right' }

app/workers/activitypub/delivery_worker.rb

@@ -12,7 +12,7 @@ class ActivityPub::DeliveryWorker
   HEADERS = { 'Content-Type' => 'application/activity+json' }.freeze
 
   def perform(json, source_account_id, inbox_url, options = {})
-    return if DeliveryFailureTracker.unavailable?(inbox_url)
+    return unless DeliveryFailureTracker.available?(inbox_url)
 
     @options        = options.with_indifferent_access
     @json           = json