Add recurring job to delete stale application forms

.env.example

@@ -4,3 +4,4 @@ GOVUK_NOTIFY_APPLICATION_SUBMITTED_TEMPLATE_ID=
 AZURE_CLIENT_ID=
 AZURE_CLIENT_SECRET=
 AZURE_TENANT_ID=
+REDIS_URL=redis://localhost:6379

.rubocop.yml

@@ -96,3 +96,7 @@ RSpec/VerifiedDoubles:
 
 RSpec/NestedGroups:
   Max: 4
+
+RSpec/DescribeClass:
+  Exclude:
+    - 'spec/jobs/schedule_job_spec.rb'

Gemfile

@@ -72,3 +72,7 @@ group :development do
   gem "binding_of_caller"
   gem "web-console"
 end
+
+gem "sidekiq", "~> 7.1"
+
+gem "sidekiq-cron", "~> 1.10"

Gemfile.lock

@@ -98,6 +98,7 @@ GEM
     config (4.2.1)
       deep_merge (~> 1.2, >= 1.2.1)
       dry-validation (~> 1.0, >= 1.0.0)
+    connection_pool (2.4.1)
     crass (1.0.6)
     date (3.3.3)
     debug (1.8.0)
@@ -150,6 +151,8 @@ GEM
       dry-schema (>= 1.12, < 2)
       zeitwerk (~> 2.6)
     erubi (1.12.0)
+    et-orbi (1.2.7)
+      tzinfo
     factory_bot (6.2.1)
       activesupport (>= 5.0.0)
     factory_bot_rails (6.2.0)
@@ -162,6 +165,9 @@ GEM
       ruby2_keywords (>= 0.0.4)
     faraday-net_http (3.0.2)
     foreman (0.87.2)
+    fugit (1.8.1)
+      et-orbi (~> 1, >= 1.2.7)
+      raabro (~> 1.4)
     globalid (1.2.1)
       activesupport (>= 6.1)
     govuk-components (4.1.0)
@@ -259,6 +265,7 @@ GEM
     public_suffix (5.0.1)
     puma (6.3.1)
       nio4r (~> 2.0)
+    raabro (1.4.0)
     racc (1.7.1)
     rack (2.2.8)
     rack-protection (3.0.6)
@@ -297,6 +304,8 @@ GEM
       zeitwerk (~> 2.5)
     rainbow (3.1.1)
     rake (13.0.6)
+    redis-client (0.17.0)
+      connection_pool
     regexp_parser (2.8.1)
     reline (0.3.4)
       io-console (~> 0.5)
@@ -370,6 +379,15 @@ GEM
       concurrent-ruby (~> 1.0, >= 1.0.2)
     shoulda-matchers (5.3.0)
       activesupport (>= 5.2.0)
+    sidekiq (7.1.2)
+      concurrent-ruby (< 2)
+      connection_pool (>= 2.3.0)
+      rack (>= 2.2.4)
+      redis-client (>= 0.14.0)
+    sidekiq-cron (1.10.1)
+      fugit (~> 1.8)
+      globalid (>= 1.0.1)
+      sidekiq (>= 6)
     simplecov (0.22.0)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
@@ -456,6 +474,8 @@ DEPENDENCIES
   scenic
   sentry-rails (~> 5.11)
   shoulda-matchers (~> 5.0)
+  sidekiq (~> 7.1)
+  sidekiq-cron (~> 1.10)
   simplecov
   sprockets-rails
   tzinfo-data

app/jobs/delete_stale_forms_job.rb

@@ -0,0 +1,9 @@
+class DeleteStaleFormsJob < ApplicationJob
+  queue_as :default
+
+  def perform(*_args)
+    Form
+      .where("created_at < ?", 1.day.ago)
+      .delete_all
+  end
+end

config/application.rb

@@ -39,5 +39,6 @@ class Application < Rails::Application
 
     # Don't generate system test files.
     config.generators.system_tests = nil
+    config.active_job.queue_adapter = :sidekiq
   end
 end

config/schedule.yml

@@ -0,0 +1,3 @@
+delete_stale_forms:
+  cron: "0 1 * * *"
+  class: DeleteStaleFormsJob

spec/jobs/delete_stale_forms_job_spec.rb

@@ -0,0 +1,23 @@
+require "rails_helper"
+
+RSpec.describe DeleteStaleFormsJob do
+  subject(:job) { described_class.new }
+
+  describe "perform" do
+    let(:stale_form) { build(:form, created_at: 25.hours.ago) }
+    let(:form) { build(:form) }
+
+    before do
+      stale_form.save
+      form.save
+    end
+
+    it { expect { job.perform }.to change(Form, :count).from(2).to(1) }
+
+    context "delete stale forms" do
+      before { job.perform }
+
+      it { expect { Form.find(id: stale_form.id) }.to raise_error(ActiveRecord::RecordNotFound) }
+    end
+  end
+end

spec/jobs/schedule_job_spec.rb

@@ -0,0 +1,24 @@
+require "rails_helper"
+
+RSpec.describe "Schedule jobs" do
+  subject(:schedule_jobs) { YAML.load_file(schedule_file_path) }
+
+  let(:schedule_file_path) { "config/schedule.yml" }
+
+  it "config file exists" do
+    expect(schedule_jobs).to be_present
+  end
+
+  describe "DeleteStaleFormsJob" do
+    let(:job_name) { "delete_stale_forms" }
+    let(:job) { schedule_jobs[job_name] }
+
+    it "schedule time" do
+      expect(job["cron"]).to eq("0 1 * * *")
+    end
+
+    it "job class name" do
+      expect(job["class"]).to eq("DeleteStaleFormsJob")
+    end
+  end
+end