Periodically remove expired PuSH subscribers (#4654)

app/models/subscription.rb

@@ -26,6 +26,7 @@ class Subscription < ApplicationRecord
 
   scope :confirmed, -> { where(confirmed: true) }
   scope :future_expiration, -> { where(arel_table[:expires_at].gt(Time.now.utc)) }
+  scope :expired, -> { where(arel_table[:expires_at].lt(Time.now.utc)) }
   scope :active, -> { confirmed.future_expiration }
 
   def lease_seconds=(value)

app/workers/scheduler/feed_cleanup_scheduler.rb

@@ -5,8 +5,6 @@ class Scheduler::FeedCleanupScheduler
   include Sidekiq::Worker
 
   def perform
-    logger.info 'Cleaning out home feeds of inactive users'
-
     redis.pipelined do
       inactive_users.pluck(:account_id).each do |account_id|
         redis.del(FeedManager.instance.key(:home, account_id))

app/workers/scheduler/media_cleanup_scheduler.rb

@@ -5,7 +5,6 @@ class Scheduler::MediaCleanupScheduler
   include Sidekiq::Worker
 
   def perform
-    logger.info 'Cleaning out unattached media attachments'
     unattached_media.find_each(&:destroy)
   end
 

app/workers/scheduler/subscriptions_cleanup_scheduler.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+require 'sidekiq-scheduler'
+
+class Scheduler::SubscriptionsCleanupScheduler
+  include Sidekiq::Worker
+
+  def perform
+    Subscription.expired.in_batches.delete_all
+  end
+end

app/workers/scheduler/subscriptions_scheduler.rb

@@ -7,7 +7,6 @@ class Scheduler::SubscriptionsScheduler
   include Sidekiq::Worker
 
   def perform
-    logger.info 'Queueing PuSH re-subscriptions'
     Pubsubhubbub::SubscribeWorker.push_bulk(expiring_accounts.pluck(:id))
   end
 

config/sidekiq.yml

@@ -21,3 +21,6 @@
   user_cleanup_scheduler:
     cron: '4 5 * * *'
     class: Scheduler::UserCleanupScheduler
+  subscriptions_cleanup_scheduler:
+    cron: '2 2 * * 0'
+    class: Scheduler::SubscriptionsCleanupScheduler