Restoring old async behaviour of thread resolving as it proved to be more robust

app/services/process_feed_service.rb

@@ -122,7 +122,7 @@ class ProcessFeedService < BaseService
     def find_or_resolve_status(parent, uri, url)
       status = find_status(uri)
 
-      ResolveThread.new.call(parent, url) if status.nil?
+      ThreadResolveWorker.perform_async(parent.id, url) if status.nil?
 
       status
     end
@@ -243,15 +243,4 @@ class ProcessFeedService < BaseService
       "#{username}@#{domain}"
     end
   end
-
-  class ResolveThread
-    def call(child_status, parent_url)
-      parent_status = FetchRemoteStatusService.new.call(parent_url)
-
-      return if parent_status.nil?
-
-      child_status.thread = parent_status
-      child_status.save!
-    end
-  end
 end

app/workers/pubsubhubbub/delivery_worker.rb

@@ -4,7 +4,7 @@ class Pubsubhubbub::DeliveryWorker
   include Sidekiq::Worker
   include RoutingHelper
 
-  sidekiq_options queue: 'push'
+  sidekiq_options queue: 'push', retry: 5
 
   def perform(subscription_id, payload)
     subscription = Subscription.find(subscription_id)

app/workers/thread_resolve_worker.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+class ThreadResolveWorker
+  include Sidekiq::Worker
+
+  def perform(child_status_id, parent_url)
+    child_status  = Status.find(child_status_id)
+    parent_status = FetchRemoteStatusService.new.call(parent_url)
+
+    return if parent_status.nil?
+
+    child_status.thread = parent_status
+    child_status.save!
+  end
+end