[Elastic] Move ES settings to application settings

CHANGELOG-EE

@@ -7,6 +7,7 @@ v 8.9.0 (unreleased)
   - Instrument instance methods of Gitlab::InsecureKeyFingerprint class
   - Add API endpoint for Merge Request Approvals !449
   - Distribute RepositoryUpdateMirror jobs in time and add exclusive lease on them by project_id
+  - [Elastic] Move ES settings to application settings
 
 v 8.8.5
   - Make sure OAuth routes that we generate for Geo matches with the ones in Rails routes !444

app/controllers/admin/application_settings_controller.rb

@@ -42,6 +42,7 @@ class Admin::ApplicationSettingsController < Admin::ApplicationController
 
   def application_setting_params
     restricted_levels = params[:application_setting][:restricted_visibility_levels]
+
     if restricted_levels.nil?
       params[:application_setting][:restricted_visibility_levels] = []
     else
@@ -51,6 +52,7 @@ class Admin::ApplicationSettingsController < Admin::ApplicationController
     end
 
     import_sources = params[:application_setting][:import_sources]
+
     if import_sources.nil?
       params[:application_setting][:import_sources] = []
     else
@@ -111,6 +113,10 @@ class Admin::ApplicationSettingsController < Admin::ApplicationController
       :metrics_packet_size,
       :send_user_confirmation_email,
       :container_registry_token_expire_delay,
+      :elasticsearch_indexing,
+      :elasticsearch_search,
+      :elasticsearch_host,
+      :elasticsearch_port,
       restricted_visibility_levels: [],
       import_sources: [],
       disabled_oauth_sign_in_sources: []

app/models/application_setting.rb

@@ -55,6 +55,14 @@ class ApplicationSetting < ActiveRecord::Base
             presence: true,
             numericality: { only_integer: true, greater_than: 0 }
 
+  validates :elasticsearch_host,
+            presence: { message: "can't be blank when indexing is enabled" },
+            if: :elasticsearch_indexing?
+
+  validates :elasticsearch_port,
+            presence: { message: "can't be blank when indexing is enabled" },
+            if: :elasticsearch_indexing?
+
   validates_each :restricted_visibility_levels do |record, attr, value|
     unless value.nil?
       value.each do |level|
@@ -134,9 +142,15 @@ class ApplicationSetting < ActiveRecord::Base
       disabled_oauth_sign_in_sources: [],
       send_user_confirmation_email: false,
       container_registry_token_expire_delay: 5,
+      elasticsearch_host: ENV['ELASTIC_HOST'] || 'localhost',
+      elasticsearch_port: ENV['ELASTIC_PORT'] || '9200'
     )
   end
 
+  def elasticsearch_host
+    read_attribute(:elasticsearch_host).split(',').map(&:strip)
+  end
+
   def home_page_url_column_exist
     ActiveRecord::Base.connection.column_exists?(:application_settings, :home_page_url)
   end

app/models/concerns/elastic/application_search.rb

 module Elastic
   module ApplicationSearch
     extend ActiveSupport::Concern
+    extend Gitlab::CurrentSettings
 
     included do
       include Elasticsearch::Model
 
-      self.__elasticsearch__.client = Elasticsearch::Client.new(
-        host: Gitlab.config.elasticsearch.host,
-        port: Gitlab.config.elasticsearch.port
-      )
-
       index_name [Rails.application.class.parent_name.downcase, self.name.downcase, Rails.env].join('-')
 
       settings \
@@ -31,13 +27,13 @@ module Elastic
         }
 
       after_commit on: :create do
-        if Gitlab.config.elasticsearch.enabled && self.searchable?
+        if current_application_settings.elasticsearch_indexing? && self.searchable?
           ElasticIndexerWorker.perform_async(:index, self.class.to_s, self.id)
         end
       end
 
       after_commit on: :update do
-        if Gitlab.config.elasticsearch.enabled && self.searchable?
+        if current_application_settings.elasticsearch_indexing? && self.searchable?
           ElasticIndexerWorker.perform_async(
             :update,
             self.class.to_s,
@@ -48,12 +44,12 @@ module Elastic
       end
 
       after_commit on: :destroy do
-        if Gitlab.config.elasticsearch.enabled && self.searchable?
+        if current_application_settings.elasticsearch_indexing? && self.searchable?
           ElasticIndexerWorker.perform_async(:delete, self.class.to_s, self.id)
         end
       end
 
-      # Should be overridden in the models where not eveything should be indexed
+      # Should be overridden in the models where some records should be skipped
       def searchable?
         true
       end

app/models/concerns/elastic/repositories_search.rb

@@ -5,11 +5,6 @@ module Elastic
     included do
       include Elasticsearch::Git::Repository
 
-      self.__elasticsearch__.client = Elasticsearch::Client.new(
-        host: Gitlab.config.elasticsearch.host,
-        port: Gitlab.config.elasticsearch.port
-      )
-
       def repository_id
         project.id
       end

app/models/concerns/elastic/wiki_repositories_search.rb

@@ -5,11 +5,6 @@ module Elastic
     included do
       include Elasticsearch::Git::Repository
 
-      self.__elasticsearch__.client = Elasticsearch::Client.new(
-        host: Gitlab.config.elasticsearch.host,
-        port: Gitlab.config.elasticsearch.port
-      )
-
       def repository_id
         "wiki_#{project.id}"
       end

app/models/project.rb

@@ -229,7 +229,7 @@ class Project < ActiveRecord::Base
         project.save
       end
 
-      if Gitlab.config.elasticsearch.enabled
+      if current_application_settings.elasticsearch_indexing?
         project.repository.index_blobs
         project.repository.index_commits
       end

app/models/project_wiki.rb

 class ProjectWiki
   include Gitlab::ShellAdapter
   include Elastic::WikiRepositoriesSearch
+  include Gitlab::CurrentSettings
 
   MARKUPS = {
     'Markdown' => :markdown,
@@ -193,6 +194,6 @@ class ProjectWiki
   end
 
   def update_elastic_index
-    index_blobs if Gitlab.config.elasticsearch.enabled
+    index_blobs if current_application_settings.elasticsearch_indexing?
   end
 end

app/services/git_push_service.rb

@@ -74,7 +74,7 @@ class GitPushService < BaseService
     CreateCommitBuildsService.new.execute(@project, current_user, build_push_data, mirror_update: mirror_update)
     ProjectCacheWorker.perform_async(@project.id)
 
-    index_commits_blobs if Gitlab.config.elasticsearch.enabled
+    index_commits_blobs if current_application_settings.elasticsearch_indexing?
   end
 
   def index_commits_blobs

app/services/search/global_service.rb

 module Search
   class GlobalService
+    include Gitlab::CurrentSettings
+
     attr_accessor :current_user, :params
 
     def initialize(user, params)
@@ -11,7 +13,7 @@ module Search
       projects = ProjectsFinder.new.execute(current_user)
       projects = projects.in_namespace(group.id) if group
 
-      if Gitlab.config.elasticsearch.enabled
+      if current_application_settings.elasticsearch_search?
         Gitlab::Elastic::SearchResults.new(current_user, projects.pluck(:id), params[:search])
       else
         Gitlab::SearchResults.new(current_user, projects, params[:search])

app/services/search/project_service.rb

 module Search
   class ProjectService
+    include Gitlab::CurrentSettings
+
     attr_accessor :project, :current_user, :params
 
     def initialize(project, user, params)
@@ -7,7 +9,7 @@ module Search
     end
 
     def execute
-      if Gitlab.config.elasticsearch.enabled
+      if current_application_settings.elasticsearch_search?
         Gitlab::Elastic::ProjectSearchResults.new(current_user,
                                                   project.id,
                                                   params[:search],

app/services/search/snippet_service.rb

 module Search
   class SnippetService
+    include Gitlab::CurrentSettings
     attr_accessor :current_user, :params
 
     def initialize(user, params)
@@ -7,7 +8,7 @@ module Search
     end
 
     def execute
-      if Gitlab.config.elasticsearch.enabled
+      if current_application_settings.elasticsearch_search?
         Gitlab::Elastic::SnippetSearchResults.new(current_user,
                                                   params[:search])
       else

app/views/admin/application_settings/_form.html.haml

@@ -340,6 +340,34 @@
         .help-block
           If you got a lot of false alarms from repository checks you can choose to clear all repository check information from the database.
 
+  %fieldset
+    %legend Elasticsearch
+    .form-group
+      .col-sm-offset-2.col-sm-10
+        .checkbox
+          = f.label :elasticsearch_indexing do
+            = f.check_box :elasticsearch_indexing
+            Elasticsearch indexing
+
+    .form-group
+      .col-sm-offset-2.col-sm-10
+        .checkbox
+          = f.label :elasticsearch_search do
+            = f.check_box :elasticsearch_search
+            Search with Elasticsearch enabled
+
+    .form-group
+      = f.label :elasticsearch_host, 'Host', class: 'control-label col-sm-2'
+      .col-sm-10
+        = f.text_field :elasticsearch_host, value: @application_setting.elasticsearch_host.join(', '), class: 'form-control', placeholder: 'localhost'
+        .help-block
+          The TCP/IP host to use for connecting to Elasticsearch. Use a comma-separated list to support clustering (e.g., "host1, host2").
+
+    .form-group
+      = f.label :elasticsearch_port, 'Port', class: 'control-label col-sm-2'
+      .col-sm-10
+        = f.text_field :elasticsearch_port, class: 'form-control', placeholder: ApplicationSetting.current.elasticsearch_port
+
 
   .form-actions
     = f.submit 'Save', class: 'btn btn-save'

app/views/admin/dashboard/index.html.haml

@@ -66,7 +66,7 @@
         %p
           Elasticsearch
           %span.light.pull-right
-            = boolean_to_icon Gitlab.config.elasticsearch.enabled
+            = boolean_to_icon current_application_settings.elasticsearch_search?
         %p
           Geo
           %span.light.pull-right

app/workers/elastic_indexer_worker.rb

 class ElasticIndexerWorker
   include Sidekiq::Worker
+  include Elasticsearch::Model::Client::ClassMethods
 
   sidekiq_options queue: :elasticsearch
 
   ISSUE_TRACKED_FIELDS = %w(assignee_id author_id confidential)
 
-  Client = Elasticsearch::Client.new(host: Gitlab.config.elasticsearch.host,
-                                     port: Gitlab.config.elasticsearch.port)
-
   def perform(operation, class_name, record_id, options = {})
     klass = class_name.constantize
 
     case operation.to_s
     when /index|update/
       record = klass.find(record_id)
-      record.__elasticsearch__.client = Client
+      record.__elasticsearch__.client = client
       record.__elasticsearch__.__send__ "#{operation}_document"
 
       update_issue_notes(record, options["changed_fields"]) if klass == Issue
     when /delete/
-      Client.delete index: klass.index_name, type: klass.document_type, id: record_id
+      client.delete index: klass.index_name, type: klass.document_type, id: record_id
 
       clear_project_indexes(record_id) if klass == Project
     end
@@ -35,7 +33,7 @@ class ElasticIndexerWorker
 
   def clear_project_indexes(record_id)
     # Remove repository index
-    Client.delete_by_query({
+    client.delete_by_query({
       index: Repository.__elasticsearch__.index_name,
       body: {
         query: {

app/workers/post_receive.rb

 class PostReceive
   include Sidekiq::Worker
+  extend Gitlab::CurrentSettings
 
   sidekiq_options queue: :post_receive
 
@@ -50,7 +51,7 @@ class PostReceive
   end
 
   def update_wiki_es_indexes(post_received)
-    return unless Gitlab.config.elasticsearch.enabled
+    return unless current_application_settings.elasticsearch_indexing?
 
     post_received.project.wiki.index_blobs
   end

config/gitlab.yml.example

@@ -150,14 +150,6 @@ production: &base
     # The location where LFS objects are stored (default: shared/lfs-objects).
     # storage_path: shared/lfs-objects
 
-  ## Elasticsearch (EE only)
-  # Enable it if you are going to use elasticsearch instead of
-  # regular database search
-  elasticsearch:
-    enabled: false
-  #  host: localhost
-  #  port: 9200
-
   ## GitLab Pages
   pages:
     enabled: false

config/initializers/elastic_client_setup.rb

+# Be sure to restart your server when you modify this file.
+
+require 'gitlab/current_settings'
+
+
+module Elasticsearch
+  module Model
+    module Client
+      module ClassMethods
+        include Gitlab::CurrentSettings
+
+        def client(client = nil)
+          if @client.nil? || es_configuration_changed?
+            @es_host = current_application_settings.elasticsearch_host
+            @es_port = current_application_settings.elasticsearch_port
+
+            @client = Elasticsearch::Client.new(
+              host: current_application_settings.elasticsearch_host,
+              port: current_application_settings.elasticsearch_port
+            )
+          end
+
+          @client
+        end
+
+        def es_configuration_changed?
+          @es_host != current_application_settings.elasticsearch_host ||
+          @es_port != current_application_settings.elasticsearch_port
+        end
+      end
+    end
+  end
+end

db/migrate/20160611101122_add_es_to_application_settings.rb

+class AddEsToApplicationSettings < ActiveRecord::Migration
+  def up
+    add_column :application_settings, :elasticsearch_indexing, :boolean, default: false, null: false
+    add_column :application_settings, :elasticsearch_search, :boolean, default: false, null: false
+    add_column :application_settings, :elasticsearch_host, :string, default: 'localhost'
+    add_column :application_settings, :elasticsearch_port, :string, default: '9200'
+
+    es_enabled = Settings.elasticsearch['enabled']
+
+    es_host = Settings.elasticsearch['host']
+    es_host = es_host.join(',') if es_host.is_a?(Array)
+
+    es_port = Settings.elasticsearch['port']
+
+    execute <<-SQL.strip_heredoc
+      UPDATE application_settings
+      SET
+        elasticsearch_indexing = #{es_enabled},
+        elasticsearch_search = #{es_enabled},
+        elasticsearch_host = '#{es_host}',
+        elasticsearch_port = '#{es_port}'
+    SQL
+  end
+
+  def down
+    remove_column :application_settings, :elasticsearch_indexing
+    remove_column :application_settings, :elasticsearch_search
+    remove_column :application_settings, :elasticsearch_host
+    remove_column :application_settings, :elasticsearch_port
+  end
+end

db/schema.rb

@@ -88,6 +88,10 @@ ActiveRecord::Schema.define(version: 20160615142710) do
     t.boolean  "send_user_confirmation_email",          default: false
     t.integer  "container_registry_token_expire_delay", default: 5
     t.text     "after_sign_up_text"
+    t.boolean  "elasticsearch_indexing",                default: false,       null: false
+    t.boolean  "elasticsearch_search",                  default: false,       null: false
+    t.string   "elasticsearch_host",                    default: "localhost"
+    t.string   "elasticsearch_port",                    default: "9200"
   end
 
   create_table "approvals", force: :cascade do |t|

doc/integration/elasticsearch.md

@@ -22,7 +22,7 @@ searching in:
 - snippets
 - wiki repositories
 
-Once the data is added to the database, search indexes will be updated
+Once the data is added to the database or repository, search indexes will be updated
 automatically. Elasticsearch can be installed on the same machine that GitLab
 is installed or on a separate server.
 
@@ -45,63 +45,34 @@ use the packages that are available for your OS.
 
 ## Enable Elasticsearch
 
-In order to enable Elasticsearch you need to have access to the server that
-GitLab is hosted on.
+In order to enable Elasticsearch you need to have access to the server that GitLab is hosted on, and an administrator account on your GitLab instance. Go to **Admin > Settings** and find the "Elasticsearch" section.
 
-The following three parameters are needed to enable Elasticsearch:
+The following Elasticsearch settings are available:
 
 | Parameter                           | Description |
 | ---------                           | ----------- |
-| `enabled` | Enables/disables the Elasticsearch integration. Can be either `true` or `false` |
-| `host`    | The host where Elasticsearch is installed on. Can be either an IP or a domain name which correctly resolves to an IP. It can be changed in the [Elasticsearch configuration settings][elastic-settings]. The default value is `localhost` |
-| `port`    | The TCP port that Elasticsearch listens to. It can be changed in the [Elasticsearch configuration settings][elastic-settings]. The default value is `9200`  |
+| `Elasticsearch indexing`            | Enables/disables Elasticsearch indexing. You may want to enable indexing but disable search in order to give the index time to be fully completed, for example. |
+| `Search with Elasticsearch enabled` | Enables/disables using Elasticsearch in search. |
+| `Host`                              | The TCP/IP host to use for connecting to Elasticsearch. Use a comma-separated list to support clustering (e.g., "host1, host2"). |
+| `Port`                              | The TCP port that Elasticsearch listens to. The default value is 9200  |
 
-### Enable Elasticsearch in Omnibus installations
 
-If you have used one of the [Omnibus packages][pkg] to install GitLab, all
-you have to do is edit `/etc/gitlab/gitlab.rb` and add the following lines:
-
-```ruby
-gitlab_rails['elasticsearch_enabled'] = true
-gitlab_rails['elasticsearch_host'] = "localhost"
-gitlab_rails['elasticsearch_port'] = 9200
-```
-
-Replace the values as you see fit according to the
-[settings table above](#enable-elasticsearch).
-
-Save the file and reconfigure GitLab for the changes to take effect:
-`sudo gitlab-ctl reconfigure`.
-
-As a last step, move on to
-[add GitLab's data to the Elasticsearch index](#add-gitlabs-data-to-the-elasticsearch-index).
-
-### Enable Elasticsearch in source installations
-
-If you have installed GitLab from source, edit `/home/git/gitlab/config/gitlab.yml`:
+## Add GitLab's data to the Elasticsearch index
 
-```yaml
-elasticsearch:
-  enabled: true
-  host: localhost
-  port: 9200
-```
+Configure Elasticsearch's host and port in **Admin > Settings**. Then create empty indexes using one of the following commands:
 
-Replace the values as you see fit according to the
-[settings table above](#enable-elasticsearch).
 
-Save the file and restart GitLab for the changes to take effect:
-`sudo service gitlab restart`.
+    ```
+    # Omnibus installations
+    sudo gitlab-rake gitlab:elastic:create_empty_indexes
 
-As a last step, move on to
-[add GitLab's data to the Elasticsearch index](#add-gitlabs-data-to-the-elasticsearch-index).
+    # Installations from source
+    bundle exec rake gitlab:elastic:create_empty_indexes
+    ```
 
-## Add GitLab's data to the Elasticsearch index
 
-After [enabling Elasticsearch](#enable-elasticsearch), you must run the
-following rake tasks to add GitLab's data to the Elasticsearch index.
 
-It might take a while depending on how big your Git repositories are (see
+Then enable Elasticsearch indexing and run indexing tasks. It might take a while depending on how big your Git repositories are (see
 [Indexing large repositories](#indexing-large-repositories)).
 
 ---
@@ -167,7 +138,8 @@ sudo gitlab-rake gitlab:elastic:index_database
 # Installations from source
 bundle exec rake gitlab:elastic:index_database RAILS_ENV=production
 ```
-To index all available entities:
+
+Or everything at once (database records, repositories, wikis):
 
 ```
 # Omnibus installations
@@ -179,10 +151,7 @@ bundle exec rake gitlab:elastic:index RAILS_ENV=production
 
 ## Disable Elasticsearch
 
-Disabling the Elasticsearch integration is as easy as setting `enabled` to
-`false` in your GitLab settings. See [Enable Elasticsearch](#enable-elasticsearch)
-to find where those settings are and don't forget to reconfigure/restart GitLab
-for the changes to take effect.
+Disabling the Elasticsearch integration is as easy as unchecking `Search with Elasticsearch enabled` and `Elasticsearch indexing` in **Admin > Settings**.
 
 ## Special recommendations
 
@@ -241,8 +210,7 @@ time drop.
 
 To minimize downtime of the search feature we recommend the following:
 
-1. Configure Elasticsearch in `gitlab.yml`, or `gitlab.rb` for Omnibus
-   installations, but do not enable it, just set a host and port.
+1. Configure Elasticsearch in **Admin > Settings**, but do not enable it, just set a host and port.
 
 1. Create empty indexes:
 
@@ -257,7 +225,7 @@ To minimize downtime of the search feature we recommend the following:
 1. Index all repositories using the `gitlab:elastic:index_repositories` Rake
    task (see above). You'll probably want to do this in parallel.
 
-1. Enable Elasticsearch and restart GitLab. Note that once enabled the index will be updated when new data is pushed to the GitLab server.
+1. Enable Elasticsearch indexing.
 
 1. Run indexers for database (with the `UPDATE_INDEX=1` parameter), wikis, and
    repositories. By running  the repository indexer twice you will be sure that

features/steps/project/elastic/global_search.rb

+require Rails.root.join('spec', 'support', 'stub_configuration')
+
 class Spinach::Features::GlobalSearch < Spinach::FeatureSteps
   include SharedAuthentication
   include SharedPaths
   include SharedProject
   include SharedElastic
+  include StubConfiguration
 
   before do
     [::Project, Issue, MergeRequest, Milestone].each do |model|
@@ -15,7 +18,7 @@ class Spinach::Features::GlobalSearch < Spinach::FeatureSteps
       model.__elasticsearch__.delete_index!
     end
 
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(false)
+    stub_application_setting(elasticsearch_search: false, elasticsearch_indexing: false)
   end
 
   step 'project has all data available for the search' do

features/steps/project/elastic/project_search.rb

@@ -3,6 +3,7 @@ class Spinach::Features::ProjectSearch < Spinach::FeatureSteps
   include SharedPaths
   include SharedProject
   include SharedElastic
+  include StubConfiguration
 
   before do
     [::Project, Repository, Note, MergeRequest, Milestone, ::ProjectWiki, Issue].each do |model|
@@ -15,7 +16,7 @@ class Spinach::Features::ProjectSearch < Spinach::FeatureSteps
       model.__elasticsearch__.delete_index!
     end
 
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(false)
+    stub_application_setting(elasticsearch_search: false, elasticsearch_indexing: false)
   end
 
   step 'project has all data available for the search' do

features/steps/project/elastic/snippets_search.rb

@@ -3,6 +3,7 @@ class Spinach::Features::SnippetsSearch < Spinach::FeatureSteps
   include SharedPaths
   include SharedProject
   include SharedElastic
+  include StubConfiguration
 
   before do
     Snippet.__elasticsearch__.create_index!
@@ -11,7 +12,7 @@ class Spinach::Features::SnippetsSearch < Spinach::FeatureSteps
   after do
     Snippet.__elasticsearch__.delete_index!
 
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(false)
+    stub_application_setting(elasticsearch_search: false, elasticsearch_indexing: false)
   end
 
   step 'there is a snippet "index" with "php rocks" string' do

features/steps/shared/elastic.rb

@@ -25,7 +25,7 @@ module SharedElastic
   end
 
   step 'Elasticsearch is enabled' do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(true)
+    stub_application_setting(elasticsearch_search: true, elasticsearch_indexing: true)
   end
 
   def select_filter(name)

lib/gitlab/current_settings.rb

@@ -44,6 +44,10 @@ module Gitlab
         akismet_enabled: false,
         repository_checks_enabled: true,
         container_registry_token_expire_delay: 5,
+        elasticsearch_search: false,
+        elasticsearch_indexing: false,
+        elasticsearch_host: ENV['ELASTIC_HOST'] || 'localhost',
+        elasticsearch_port: ENV['ELASTIC_PORT'] || '9200'
       )
     end
 

lib/gitlab/elastic/indexer.rb

 module Gitlab
   module Elastic
     class Indexer
+      include Gitlab::CurrentSettings
+
       Error = Class.new(StandardError)
 
       def initialize
         connection_info = {
-          host: Gitlab.config.elasticsearch.host,
-          port: Gitlab.config.elasticsearch.port
+          host: current_application_settings.elasticsearch_host,
+          port: current_application_settings.elasticsearch_port
         }.to_json
 
         # We accept any form of settings, including string and array

lib/tasks/gitlab/check.rake

@@ -30,7 +30,7 @@ namespace :gitlab do
       check_ruby_version
       check_git_version
       check_active_users
-      check_elasticsearch if Gitlab.config.elasticsearch.enabled
+      check_elasticsearch if ApplicationSetting.current.elasticsearch_indexing?
 
       finished_checking "GitLab"
     end
@@ -972,8 +972,8 @@ namespace :gitlab do
   end
 
   def check_elasticsearch
-    client = Elasticsearch::Client.new(host: Gitlab.config.elasticsearch.host,
-                                     port: Gitlab.config.elasticsearch.port)
+    client = Elasticsearch::Client.new(host: ApplicationSetting.current.elasticsearch_host,
+                                       port: ApplicationSetting.current.elasticsearch_port)
 
     print "Elasticsearch version >= 2.0? ... "
 

spec/lib/gitlab/elastic/indexer_spec.rb

@@ -2,13 +2,14 @@ require 'spec_helper'
 
 describe "Indexer" do
   it "runs commands" do
+    stub_application_setting(es_host: ['elastic-host1', 'elastic-host2'])
     expect(Gitlab::Popen).to receive(:popen).with(
       [File.join(Rails.root, 'bin/elastic_repo_indexer'), '1', 'full_repo_path'],
       nil,
       hash_including(
         'ELASTIC_CONNECTION_INFO' => {
-                                       host: Gitlab.config.elasticsearch.host,
-                                       port: Gitlab.config.elasticsearch.port
+                                       host: ApplicationSetting.current.elasticsearch_host,
+                                       port: ApplicationSetting.current.elasticsearch_port
                                      }.to_json,
         'RAILS_ENV'               => Rails.env,
         'FROM_SHA' => '000000',

spec/lib/gitlab/elastic/project_search_results_spec.rb

@@ -6,13 +6,13 @@ describe Gitlab::Elastic::ProjectSearchResults, lib: true do
   let(:query) { 'hello world' }
 
   before do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(true)
+    stub_application_setting(elasticsearch_search: true, elasticsearch_indexing: true)
     Project.__elasticsearch__.create_index!
     Issue.__elasticsearch__.create_index!
   end
 
   after do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(false)
+    stub_application_setting(elasticsearch_search: false, elasticsearch_indexing: false)
     Project.__elasticsearch__.delete_index!
     Issue.__elasticsearch__.delete_index!
   end

spec/models/concerns/elastic/issue_spec.rb

 require 'spec_helper'
 
-describe "Issue", elastic: true do
+describe Issue, elastic: true do
   before do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(true)
-    Issue.__elasticsearch__.create_index!
+    stub_application_setting(elasticsearch_search: true, elasticsearch_indexing: true)
+    described_class.__elasticsearch__.create_index!
   end
 
   after do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(false)
-    Issue.__elasticsearch__.delete_index!
+    described_class.__elasticsearch__.delete_index!
+    stub_application_setting(elasticsearch_search: false, elasticsearch_indexing: false)
   end
 
   it "searches issues" do
@@ -21,11 +21,11 @@ describe "Issue", elastic: true do
     # The issue I have no access to
     create :issue, title: 'bla-bla term'
 
-    Issue.__elasticsearch__.refresh_index!
+    described_class.__elasticsearch__.refresh_index!
 
     options = { project_ids: [project.id] }
 
-    expect(Issue.elastic_search('term', options: options).total_count).to eq(2)
+    expect(described_class.elastic_search('term', options: options).total_count).to eq(2)
   end
 
   it "returns json with all needed elements" do

spec/models/concerns/elastic/merge_request_spec.rb

 require 'spec_helper'
 
-describe "MergeRequest", elastic: true do
+describe MergeRequest, elastic: true do
   before do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(true)
-    MergeRequest.__elasticsearch__.create_index!
+    stub_application_setting(elasticsearch_search: true, elasticsearch_indexing: true)
+    described_class.__elasticsearch__.create_index!
   end
 
   after do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(false)
-    MergeRequest.__elasticsearch__.delete_index!
+    described_class.__elasticsearch__.delete_index!
+    stub_application_setting(elasticsearch_search: false, elasticsearch_indexing: false)
   end
 
   it "searches merge requests" do
@@ -21,11 +21,11 @@ describe "MergeRequest", elastic: true do
     # The merge request you have no access to
     create :merge_request, title: 'also with term'
 
-    MergeRequest.__elasticsearch__.refresh_index!
+    described_class.__elasticsearch__.refresh_index!
 
     options = { project_ids: [project.id] }
 
-    expect(MergeRequest.elastic_search('term', options: options).total_count).to eq(2)
+    expect(described_class.elastic_search('term', options: options).total_count).to eq(2)
   end
 
   it "returns json with all needed elements" do

spec/models/concerns/elastic/milestone_spec.rb

 require 'spec_helper'
 
-describe "Milestone", elastic: true do
+describe Milestone, elastic: true do
   before do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(true)
-    Milestone.__elasticsearch__.create_index!
+    stub_application_setting(elasticsearch_search: true, elasticsearch_indexing: true)
+    described_class.__elasticsearch__.create_index!
   end
 
   after do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(false)
-    Milestone.__elasticsearch__.delete_index!
+    described_class.__elasticsearch__.delete_index!
+    stub_application_setting(elasticsearch_search: false, elasticsearch_indexing: false)
   end
 
   it "searches milestones" do
@@ -21,11 +21,11 @@ describe "Milestone", elastic: true do
     # The milestone you have no access to
     create :milestone, title: 'bla-bla term'
 
-    Milestone.__elasticsearch__.refresh_index!
+    described_class.__elasticsearch__.refresh_index!
 
     options = { project_ids: [project.id] }
 
-    expect(Milestone.elastic_search('term', options: options).total_count).to eq(2)
+    expect(described_class.elastic_search('term', options: options).total_count).to eq(2)
   end
 
   it "returns json with all needed elements" do

spec/models/concerns/elastic/note_spec.rb

 require 'spec_helper'
 
-describe "Note", elastic: true do
+describe Note, elastic: true do
   before do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(true)
-    Note.__elasticsearch__.create_index!
+    stub_application_setting(elasticsearch_search: true, elasticsearch_indexing: true)
+    described_class.__elasticsearch__.create_index!
   end
 
   after do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(false)
-    Note.__elasticsearch__.delete_index!
+    described_class.__elasticsearch__.delete_index!
+    stub_application_setting(elasticsearch_search: false, elasticsearch_indexing: false)
   end
 
   it "searches notes" do
@@ -20,11 +20,11 @@ describe "Note", elastic: true do
     # The note in the project you have no access to
     create :note, note: 'bla-bla term'
 
-    Note.__elasticsearch__.refresh_index!
+    described_class.__elasticsearch__.refresh_index!
 
     options = { project_ids: [issue.project.id] }
 
-    expect(Note.elastic_search('term', options: options).total_count).to eq(1)
+    expect(described_class.elastic_search('term', options: options).total_count).to eq(1)
   end
 
   it "returns json with all needed elements" do

spec/models/concerns/elastic/project_spec.rb

 require 'spec_helper'
 
-describe "Projects", elastic: true do
+describe Project, elastic: true do
   before do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(true)
-    Project.__elasticsearch__.create_index!
+    stub_application_setting(elasticsearch_search: true, elasticsearch_indexing: true)
+    described_class.__elasticsearch__.create_index!
   end
 
   after do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(false)
-    Project.__elasticsearch__.delete_index!
+    described_class.__elasticsearch__.delete_index!
+    stub_application_setting(elasticsearch_search: false, elasticsearch_indexing: false)
   end
 
   it "searches projects" do
@@ -18,11 +18,11 @@ describe "Projects", elastic: true do
     create :empty_project, path: 'someone_elses_project'
     project_ids = [project.id, project1.id, project2.id]
 
-    Project.__elasticsearch__.refresh_index!
+    described_class.__elasticsearch__.refresh_index!
 
-    expect(Project.elastic_search('test', options: { pids: project_ids }).total_count).to eq(1)
-    expect(Project.elastic_search('test1', options: { pids: project_ids }).total_count).to eq(1)
-    expect(Project.elastic_search('someone_elses_project', options: { pids: project_ids }).total_count).to eq(0)
+    expect(described_class.elastic_search('test', options: { pids: project_ids }).total_count).to eq(1)
+    expect(described_class.elastic_search('test1', options: { pids: project_ids }).total_count).to eq(1)
+    expect(described_class.elastic_search('someone_elses_project', options: { pids: project_ids }).total_count).to eq(0)
   end
 
   it "returns json with all needed elements" do

spec/models/concerns/elastic/repositories_spec.rb

 require 'spec_helper'
 
-describe "Repository", elastic: true do
+describe Repository, elastic: true do
   before do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(true)
-    Repository.__elasticsearch__.create_index!
+    stub_application_setting(elasticsearch_search: true, elasticsearch_indexing: true)
+    described_class.__elasticsearch__.create_index!
   end
 
   after do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(false)
-    Repository.__elasticsearch__.delete_index!
+    described_class.__elasticsearch__.delete_index!
+    stub_application_setting(elasticsearch_search: false, elasticsearch_indexing: false)
   end
 
   it "searches blobs and commits" do
@@ -17,7 +17,7 @@ describe "Repository", elastic: true do
     project.repository.index_blobs
     project.repository.index_commits
 
-    Repository.__elasticsearch__.refresh_index!
+    described_class.__elasticsearch__.refresh_index!
 
     expect(project.repository.search('def popen')[:blobs][:total_count]).to eq(1)
     expect(project.repository.search('initial')[:commits][:total_count]).to eq(1)

spec/models/concerns/elastic/snippet_spec.rb

 require 'spec_helper'
 
-describe "Snippet", elastic: true do
+describe Snippet, elastic: true do
   before do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(true)
-    Snippet.__elasticsearch__.create_index!
+    stub_application_setting(elasticsearch_search: true, elasticsearch_indexing: true)
+    described_class.__elasticsearch__.create_index!
   end
 
   after do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(false)
-    Snippet.__elasticsearch__.delete_index!
+    described_class.__elasticsearch__.delete_index!
+    stub_application_setting(elasticsearch_search: false, elasticsearch_indexing: false)
   end
 
   it "searches snippets by code" do
@@ -20,11 +20,11 @@ describe "Snippet", elastic: true do
 
     snippet3 = create :personal_snippet, :public, content: 'genius code'
 
-    Snippet.__elasticsearch__.refresh_index!
+    described_class.__elasticsearch__.refresh_index!
 
     options = { author_id: user.id }
 
-    result = Snippet.elastic_search_code('genius code', options: options)
+    result = described_class.elastic_search_code('genius code', options: options)
 
     expect(result.total_count).to eq(2)
     expect(result.records.map(&:id)).to include(snippet.id, snippet3.id)
@@ -38,12 +38,12 @@ describe "Snippet", elastic: true do
     create :snippet, :public, file_name: 'index.php'
     create :snippet
 
-    Snippet.__elasticsearch__.refresh_index!
+    described_class.__elasticsearch__.refresh_index!
 
     options = { author_id: user.id }
 
-    expect(Snippet.elastic_search('home', options: options).total_count).to eq(1)
-    expect(Snippet.elastic_search('index.php', options:  options).total_count).to eq(1)
+    expect(described_class.elastic_search('home', options: options).total_count).to eq(1)
+    expect(described_class.elastic_search('index.php', options:  options).total_count).to eq(1)
   end
 
   it "returns json with all needed elements" do

spec/models/concerns/elastic/wiki_reposotories_spec.rb

 require 'spec_helper'
 
-describe "ProjectWiki", elastic: true do
+describe ProjectWiki, elastic: true do
   before do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(true)
-    ProjectWiki.__elasticsearch__.create_index!
+    stub_application_setting(elasticsearch_search: true, elasticsearch_indexing: true)
+    described_class.__elasticsearch__.create_index!
   end
 
   after do
-    allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(false)
-    ProjectWiki.__elasticsearch__.delete_index!
+    described_class.__elasticsearch__.delete_index!
+    stub_application_setting(elasticsearch_search: false, elasticsearch_indexing: false)
   end
 
   it "searches wiki page" do
@@ -18,7 +18,7 @@ describe "ProjectWiki", elastic: true do
 
     project.wiki.index_blobs
 
-    ProjectWiki.__elasticsearch__.refresh_index!
+    described_class.__elasticsearch__.refresh_index!
 
     expect(project.wiki.search('bla', type: :blob)[:blobs][:total_count]).to eq(1)
   end

spec/models/repository_spec.rb

@@ -800,11 +800,13 @@ describe Repository, models: true do
 
   describe "Elastic search", elastic: true do
     before do
+      stub_application_setting(elasticsearch_search: true, elasticsearch_indexing: true)
       Repository.__elasticsearch__.create_index!
     end
 
     after do
       Repository.__elasticsearch__.delete_index!
+      stub_application_setting(elasticsearch_search: false, elasticsearch_indexing: false)
     end
 
     describe :find_commits_by_message_with_elastic do

spec/services/git_push_service_spec.rb

@@ -139,11 +139,11 @@ describe GitPushService, services: true do
 
   describe "ES indexing" do
     before do
-      allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(true)
+      stub_application_setting(elasticsearch_search: true, elasticsearch_indexing: true)
     end
 
     after do
-      allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(false)
+      stub_application_setting(elasticsearch_search: false, elasticsearch_indexing: false)
     end
 
     it "triggers indexer" do

spec/workers/post_receive_spec.rb

@@ -75,7 +75,7 @@ describe PostReceive do
     it "triggers wiki index update" do
       expect(Project).to receive(:find_with_namespace).with("#{project.path_with_namespace}.wiki").and_return(nil)
       expect(Project).to receive(:find_with_namespace).with(project.path_with_namespace).and_return(project)
-      allow(Gitlab.config.elasticsearch).to receive(:enabled).and_return(true)
+      stub_application_setting(elasticsearch_search: true, elasticsearch_indexing: true)
       expect_any_instance_of(ProjectWiki).to receive(:index_blobs)
 
       repo_path = "#{pwd(project)}.wiki"