Refactoring: Migrated BackgroundJobSearchIndex (Delayed::Job) to SearchIndexJob (ActiveJob).

Refactoring: Enable MonitoringController to handle ActiveJob background jobs.

app/controllers/monitoring_controller.rb

@@ -99,11 +99,26 @@ curl http://localhost/api/v1/monitoring/health_check?token=XXX
       issues.push "#{count_failed_jobs} failing background jobs"
     end
 
-    listed_failed_jobs = failed_jobs.select(:handler, :attempts).limit(10)
-    sorted_failed_jobs = listed_failed_jobs.group_by(&:name).sort_by { |_handler, entries| entries.length }.reverse.to_h
-    sorted_failed_jobs.each_with_index do |(name, jobs), index|
-      attempts = jobs.map(&:attempts).sum
-      issues.push "Failed to run background job ##{index += 1} '#{name}' #{jobs.count} time(s) with #{attempts} attempt(s)."
+    handler_attempts_map = {}
+    failed_jobs.order(:created_at).limit(10).each do |job|
+
+      job_name = if job.name == 'ActiveJob::QueueAdapters::DelayedJobAdapter::JobWrapper'.freeze
+                   job.payload_object.job_data['job_class']
+                 else
+                   job.name
+                 end
+
+      handler_attempts_map[job_name] ||= {
+        count:    0,
+        attempts: 0,
+      }
+
+      handler_attempts_map[job_name][:count]    += 1
+      handler_attempts_map[job_name][:attempts] += job.attempts
+    end
+
+    Hash[handler_attempts_map.sort].each_with_index do |(job_name, job_data), index|
+      issues.push "Failed to run background job ##{index + 1} '#{job_name}' #{job_data[:count]} time(s) with #{job_data[:attempts]} attempt(s)."
     end
 
     # job count check

app/jobs/search_index_job.rb

@@ -1,11 +1,11 @@
-# Copyright (C) 2012-2016 Zammad Foundation, http://zammad-foundation.org/
-class BackgroundJobSearchIndex
-  def initialize(object, o_id)
+class SearchIndexJob < ApplicationJob
+
+  retry_on StandardError, attempts: 20
+
+  def perform(object, o_id)
     @object = object
     @o_id   = o_id
-  end
 
-  def perform
     record = @object.constantize.lookup(id: @o_id)
     return if !exists?(record)
 
@@ -20,9 +20,4 @@ class BackgroundJobSearchIndex
     Rails.logger.info "Can't index #{@object}.lookup(id: #{@o_id}), no such record found"
     false
   end
-
-  def max_attempts
-    20
-  end
-
 end

app/models/concerns/has_search_index_backend.rb

@@ -24,7 +24,7 @@ update search index, if configured - will be executed automatically
     # start background job to transfer data to search index
     return true if !SearchIndexBackend.enabled?
 
-    Delayed::Job.enqueue(BackgroundJobSearchIndex.new(self.class.to_s, id))
+    SearchIndexJob.perform_later(self.class.to_s, id)
     true
   end
 

spec/jobs/search_index_job_spec.rb

@@ -0,0 +1,24 @@
+require 'rails_helper'
+
+RSpec.describe SearchIndexJob, type: :job do
+
+  it 'calls search_index_update_backend on matching record' do
+    user = create(:user)
+    expect(::User).to receive(:lookup).with(id: user.id).and_return(user)
+    expect(user).to receive(:search_index_update_backend)
+
+    described_class.perform_now('User', user.id)
+  end
+
+  it "doesn't perform for non existing records" do
+    id = 9999
+    expect(::User).to receive(:lookup).with(id: id).and_return(nil)
+    described_class.perform_now('User', id)
+  end
+
+  it 'retries on exception' do
+    expect(::User).to receive(:lookup).and_raise(RuntimeError)
+    described_class.perform_now('User', 1)
+    expect(SearchIndexJob).to have_been_enqueued
+  end
+end

spec/models/concerns/has_search_index_backend_examples.rb

@@ -0,0 +1,33 @@
+RSpec.shared_examples 'HasSearchIndexBackend' do |indexed_factory:|
+
+  context '#search_index_update', performs_jobs: true do
+    subject { create(indexed_factory) }
+
+    before(:each) do
+      allow(SearchIndexBackend).to receive(:enabled?).and_return(true)
+    end
+
+    context 'record indexing' do
+
+      before(:each) do
+        expect(subject).to be_present
+      end
+
+      it 'indexes on create' do
+        expect(SearchIndexJob).to have_been_enqueued
+      end
+
+      it 'indexes on update' do
+        clear_jobs
+        subject.update(note: 'Updated')
+        expect(SearchIndexJob).to have_been_enqueued
+      end
+
+      it 'indexes on touch' do
+        clear_jobs
+        subject.touch
+        expect(SearchIndexJob).to have_been_enqueued
+      end
+    end
+  end
+end

spec/models/organization_spec.rb

@@ -1,8 +1,10 @@
 require 'rails_helper'
 require 'models/concerns/can_lookup_examples'
+require 'models/concerns/has_search_index_backend_examples'
 
 RSpec.describe Organization do
   include_examples 'CanLookup'
+  include_examples 'HasSearchIndexBackend', indexed_factory: :organization
 
   context '.where_or_cis' do
 

spec/requests/integration/monitoring_spec.rb

@@ -372,7 +372,6 @@ RSpec.describe 'Monitoring', type: :request do
     end
 
     it 'does check health false' do
-
       channel = Channel.find_by(active: true)
       channel.status_in  = 'ok'
       channel.status_out = 'error'
@@ -423,7 +422,7 @@ RSpec.describe 'Monitoring', type: :request do
       # health_check - scheduler job count
       travel 2.seconds
       8001.times do
-        Delayed::Job.enqueue( BackgroundJobSearchIndex.new('Ticket', 1))
+        SearchIndexJob.perform_later('Ticket', 1)
       end
       Scheduler.where(active: true).each do |local_scheduler|
         local_scheduler.last_run = Time.zone.now
@@ -520,7 +519,6 @@ RSpec.describe 'Monitoring', type: :request do
     end
 
     it 'does check failed delayed job', db_strategy: :reset do
-
       # disable elasticsearch
       prev_es_config = Setting.get('es_url')
       Setting.set('es_url', 'http://127.0.0.1:92001')
@@ -598,11 +596,11 @@ RSpec.describe 'Monitoring', type: :request do
       expect(json_response['message']).to be_truthy
       expect(json_response['issues']).to be_truthy
       expect(json_response['healthy']).to eq(false)
-      expect( json_response['message']).to eq("Failed to run background job #1 'BackgroundJobSearchIndex' 1 time(s) with 4 attempt(s).")
+      expect( json_response['message']).to eq("Failed to run background job #1 'SearchIndexJob' 4 time(s) with 4 attempt(s).")
 
       # add another job
-      manual_added = Delayed::Job.enqueue( BackgroundJobSearchIndex.new('Ticket', 1))
-      manual_added.update!(attempts: 10)
+      manual_added = SearchIndexJob.perform_later('Ticket', 1)
+      Delayed::Job.find(manual_added.provider_job_id).update!(attempts: 10)
 
       # health_check
       get "/api/v1/monitoring/health_check?token=#{token}", params: {}, as: :json
@@ -612,7 +610,7 @@ RSpec.describe 'Monitoring', type: :request do
       expect(json_response['message']).to be_truthy
       expect(json_response['issues']).to be_truthy
       expect(json_response['healthy']).to eq(false)
-      expect( json_response['message']).to eq("Failed to run background job #1 'BackgroundJobSearchIndex' 2 time(s) with 14 attempt(s).")
+      expect( json_response['message']).to eq("Failed to run background job #1 'SearchIndexJob' 5 time(s) with 14 attempt(s).")
 
       # add another job
       dummy_class = Class.new do
@@ -633,7 +631,7 @@ RSpec.describe 'Monitoring', type: :request do
       expect(json_response['message']).to be_truthy
       expect(json_response['issues']).to be_truthy
       expect(json_response['healthy']).to eq(false)
-      expect( json_response['message']).to eq("Failed to run background job #1 'BackgroundJobSearchIndex' 2 time(s) with 14 attempt(s).;Failed to run background job #2 'Object' 1 time(s) with 5 attempt(s).")
+      expect( json_response['message']).to eq("Failed to run background job #1 'Object' 1 time(s) with 5 attempt(s).;Failed to run background job #2 'SearchIndexJob' 5 time(s) with 14 attempt(s).")
 
       # reset settings
       Setting.set('es_url', prev_es_config)
@@ -652,7 +650,7 @@ RSpec.describe 'Monitoring', type: :request do
       expect(json_response['message']).to be_truthy
       expect(json_response['issues']).to be_truthy
       expect(json_response['healthy']).to eq(false)
-      expect( json_response['message']).to eq("13 failing background jobs;Failed to run background job #1 'Object' 8 time(s) with 40 attempt(s).;Failed to run background job #2 'BackgroundJobSearchIndex' 2 time(s) with 14 attempt(s).")
+      expect(json_response['message']).to eq("16 failing background jobs;Failed to run background job #1 'Object' 5 time(s) with 25 attempt(s).;Failed to run background job #2 'SearchIndexJob' 5 time(s) with 14 attempt(s).")
 
       # cleanup
       Delayed::Job.delete_all