Fix Scheduler::SubscriptionsScheduler (#2834)

* Fix Scheduler::SubscriptionsScheduler, add worker test for it

* Change production log level of Sidekiq to "warn" instead of "info"

app/workers/application_worker.rb

@@ -1,7 +0,0 @@
-# frozen_string_literal: true
-
-class ApplicationWorker
-  def info(message)
-    Rails.logger.info("#{self.class.name} - #{message}")
-  end
-end

app/workers/distribution_worker.rb

@@ -1,11 +1,11 @@
 # frozen_string_literal: true
 
-class DistributionWorker < ApplicationWorker
+class DistributionWorker
   include Sidekiq::Worker
 
   def perform(status_id)
     FanOutOnWriteService.new.call(Status.find(status_id))
   rescue ActiveRecord::RecordNotFound
-    info("Couldn't find the status")
+    true
   end
 end

app/workers/pubsubhubbub/confirmation_worker.rb

@@ -25,7 +25,7 @@ class Pubsubhubbub::ConfirmationWorker
 
     body = response.body.to_s
 
-    Rails.logger.debug "Confirming PuSH subscription for #{subscription.callback_url} with challenge #{challenge}: #{body}"
+    logger.debug "Confirming PuSH subscription for #{subscription.callback_url} with challenge #{challenge}: #{body}"
 
     if mode == 'subscribe' && body == challenge
       subscription.save!

app/workers/pubsubhubbub/subscribe_worker.rb

@@ -7,7 +7,7 @@ class Pubsubhubbub::SubscribeWorker
 
   def perform(account_id)
     account = Account.find(account_id)
-    Rails.logger.debug "PuSH re-subscribing to #{account.acct}"
+    logger.debug "PuSH re-subscribing to #{account.acct}"
     ::SubscribeService.new.call(account)
   end
 end

app/workers/scheduler/subscriptions_scheduler.rb

@@ -5,9 +5,9 @@ class Scheduler::SubscriptionsScheduler
   include Sidekiq::Worker
 
   def perform
-    Rails.logger.debug 'Queueing PuSH re-subscriptions'
+    logger.info 'Queueing PuSH re-subscriptions'
 
-    expiring_accounts.pluck(:id) do |id|
+    expiring_accounts.pluck(:id).each do |id|
       Pubsubhubbub::SubscribeWorker.perform_async(id)
     end
   end

config/environments/production.rb

@@ -87,6 +87,7 @@ Rails.application.configure do
 
   config.to_prepare do
     StatsD.backend = StatsD::Instrument::Backends::NullBackend.new if ENV['STATSD_ADDR'].blank?
+    Sidekiq::Logging.logger.level = Logger::WARN
   end
 
   config.action_dispatch.default_headers = {

spec/workers/scheduler/subscriptions_scheduler_spec.rb

@@ -0,0 +1,19 @@
+require 'rails_helper'
+
+describe Scheduler::SubscriptionsScheduler do
+  subject { Scheduler::SubscriptionsScheduler.new }
+
+  let!(:expiring_account1) { Fabricate(:account, subscription_expires_at: 20.minutes.from_now, domain: 'example.com', followers_count: 1, hub_url: 'http://hub.example.com') }
+  let!(:expiring_account2) { Fabricate(:account, subscription_expires_at: 4.hours.from_now, domain: 'example.org', followers_count: 1, hub_url: 'http://hub.example.org') }
+
+  before do
+    stub_request(:post, 'http://hub.example.com/').to_return(status: 202)
+    stub_request(:post, 'http://hub.example.org/').to_return(status: 202)
+  end
+
+  it 're-subscribes for all expiring accounts' do
+    subject.perform
+    expect(a_request(:post, 'http://hub.example.com/')).to have_been_made.once
+    expect(a_request(:post, 'http://hub.example.org/')).to have_been_made.once
+  end
+end