[deploy] Refactor:Move remove_old_notifications Rake Task to Sidekiq (#9936)

* Refactor:Move remove_old_notifications Rake Task to Sidekiq

* fix typo

app/workers/notifications/remove_old_notifications_worker.rb

@@ -0,0 +1,11 @@
+module Notifications
+  class RemoveOldNotificationsWorker
+    include Sidekiq::Worker
+
+    sidekiq_options queue: :low_priority, retry: 10
+
+    def perform
+      Notification.fast_destroy_old_notifications
+    end
+  end
+end

config/schedule.yml

@@ -77,3 +77,6 @@ send_welcome_notifications:
 send_email_digest:
   cron: "30 11 * * 3,4,5,6" # 11:30 am UTC Wed, Thurs, Fri, Sat, Sun
   class: "SendEmailDigestWorker"
+remove_old_notifications:
+  cron: "0 5 * * *" # daily at 5 am UTC
+  class: "Notifications::RemoveOldNotificationsWorker"

lib/tasks/notifications.rake

@@ -1,3 +0,0 @@
-task remove_old_notifications: :environment do
-  Notification.fast_destroy_old_notifications
-end

spec/workers/notifications/remove_old_notifications_worker_spec.rb

@@ -0,0 +1,15 @@
+require "rails_helper"
+
+RSpec.describe Notifications::RemoveOldNotificationsWorker, type: :woker do
+  include_examples "#enqueues_on_correct_queue", "low_priority"
+
+  describe "#perform" do
+    let(:worker) { subject }
+
+    it "fast destroys notifications" do
+      allow(Notification).to receive(:fast_destroy_old_notifications)
+      worker.perform
+      expect(Notification).to have_received(:fast_destroy_old_notifications)
+    end
+  end
+end