Merge branch 'tc-create-project-settings' into 'master'

Introduce project_settings table

See merge request gitlab-org/gitlab!19761

app/models/project.rb

@@ -190,6 +190,7 @@ class Project < ApplicationRecord
   has_one :error_tracking_setting, inverse_of: :project, class_name: 'ErrorTracking::ProjectErrorTrackingSetting'
   has_one :metrics_setting, inverse_of: :project, class_name: 'ProjectMetricsSetting'
   has_one :grafana_integration, inverse_of: :project
+  has_one :project_setting, ->(project) { where_or_create_by(project: project) }, inverse_of: :project
 
   # Merge Requests for target project should be removed with it
   has_many :merge_requests, foreign_key: 'target_project_id', inverse_of: :target_project

app/models/project_setting.rb

+# frozen_string_literal: true
+
+class ProjectSetting < ApplicationRecord
+  belongs_to :project, inverse_of: :project_setting
+
+  self.primary_key = :project_id
+
+  def self.where_or_create_by(attrs)
+    where(primary_key => safe_find_or_create_by(attrs))
+  end
+end

app/services/projects/create_service.rb

@@ -90,6 +90,7 @@ module Projects
       end
 
       @project.track_project_repository
+      @project.create_project_setting unless @project.project_setting
 
       event_service.create_project(@project, current_user)
       system_hook_service.execute_hooks_for(@project, :create)

changelogs/unreleased/tc-create-project-settings.yml

+---
+title: Introduce project_settings table
+merge_request: 19761
+author:
+type: added

db/migrate/20191031095636_create_project_settings.rb

+# frozen_string_literal: true
+
+class CreateProjectSettings < ActiveRecord::Migration[5.2]
+  DOWNTIME = false
+
+  def change
+    create_table :project_settings, id: false do |t|
+      t.timestamps_with_timezone null: false
+      t.references :project, primary_key: true, default: nil, type: :integer, index: false, foreign_key: { on_delete: :cascade }
+    end
+  end
+end

db/post_migrate/20200122123016_backfill_project_settings.rb

+# frozen_string_literal: true
+
+class BackfillProjectSettings < ActiveRecord::Migration[5.2]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  MIGRATION = 'BackfillProjectSettings'
+  DELAY_INTERVAL = 2.minutes
+  BATCH_SIZE = 10_000
+
+  disable_ddl_transaction!
+
+  class Project < ActiveRecord::Base
+    include EachBatch
+
+    self.table_name = 'projects'
+  end
+
+  def up
+    say "Scheduling `#{MIGRATION}` jobs"
+
+    queue_background_migration_jobs_by_range_at_intervals(Project, MIGRATION, DELAY_INTERVAL, batch_size: BATCH_SIZE)
+  end
+
+  def down
+    # NOOP
+  end
+end

db/schema.rb

@@ -3296,6 +3296,11 @@ ActiveRecord::Schema.define(version: 2020_02_06_111847) do
     t.index ["project_id"], name: "index_project_repository_states_on_project_id", unique: true
   end
 
+  create_table "project_settings", primary_key: "project_id", id: :integer, default: nil, force: :cascade do |t|
+    t.datetime_with_timezone "created_at", null: false
+    t.datetime_with_timezone "updated_at", null: false
+  end
+
   create_table "project_statistics", id: :serial, force: :cascade do |t|
     t.integer "project_id", null: false
     t.integer "namespace_id", null: false
@@ -4881,6 +4886,7 @@ ActiveRecord::Schema.define(version: 2020_02_06_111847) do
   add_foreign_key "project_repositories", "projects", on_delete: :cascade
   add_foreign_key "project_repositories", "shards", on_delete: :restrict
   add_foreign_key "project_repository_states", "projects", on_delete: :cascade
+  add_foreign_key "project_settings", "projects", on_delete: :cascade
   add_foreign_key "project_statistics", "projects", on_delete: :cascade
   add_foreign_key "project_tracing_settings", "projects", on_delete: :cascade
   add_foreign_key "projects", "pool_repositories", name: "fk_6e5c14658a", on_delete: :nullify

lib/gitlab/background_migration/backfill_project_settings.rb

+# frozen_string_literal: true
+
+module Gitlab
+  module BackgroundMigration
+    # Backfill project_settings for a range of projects
+    class BackfillProjectSettings
+      def perform(start_id, end_id)
+        ActiveRecord::Base.connection.execute <<~SQL
+          INSERT INTO project_settings (project_id, created_at, updated_at)
+            SELECT projects.id, now(), now()
+            FROM projects
+            WHERE projects.id BETWEEN #{start_id} AND #{end_id}
+          ON CONFLICT (project_id) DO NOTHING;
+        SQL
+      end
+    end
+  end
+end

spec/lib/gitlab/background_migration/backfill_project_settings_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::BackgroundMigration::BackfillProjectSettings, :migration, schema: 20200114113341 do
+  let(:projects) { table(:projects) }
+  let(:project_settings) { table(:project_settings) }
+  let(:namespace) { table(:namespaces).create(name: 'user', path: 'user') }
+  let(:project) { projects.create(namespace_id: namespace.id) }
+
+  subject { described_class.new }
+
+  describe '#perform' do
+    it 'creates settings for all projects in range' do
+      projects.create(id: 5, namespace_id: namespace.id)
+      projects.create(id: 7, namespace_id: namespace.id)
+      projects.create(id: 8, namespace_id: namespace.id)
+
+      subject.perform(5, 7)
+
+      expect(project_settings.all.pluck(:project_id)).to contain_exactly(5, 7)
+    end
+  end
+end

spec/lib/gitlab/import_export/all_models.yml

@@ -452,6 +452,7 @@ project:
 - package_files
 - tracing_setting
 - alerting_setting
+- project_setting
 - webide_pipelines
 - reviews
 - incident_management_setting
@@ -613,4 +614,4 @@ epic:
 - due_date_sourcing_epic
 - events
 - resource_label_events
-- user_mentions
\ No newline at end of file
+- user_mentions

spec/migrations/20200122123016_backfill_project_settings_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+require Rails.root.join('db', 'post_migrate', '20200122123016_backfill_project_settings.rb')
+
+describe BackfillProjectSettings, :migration, :sidekiq, schema: 20200114113341 do
+  let(:projects) { table(:projects) }
+  let(:namespace) { table(:namespaces).create(name: 'user', path: 'user') }
+  let(:project) { projects.create(namespace_id: namespace.id) }
+
+  describe '#up' do
+    before do
+      stub_const("#{described_class}::BATCH_SIZE", 2)
+
+      projects.create(id: 1, namespace_id: namespace.id)
+      projects.create(id: 2, namespace_id: namespace.id)
+      projects.create(id: 3, namespace_id: namespace.id)
+    end
+
+    it 'schedules BackfillProjectSettings background jobs' do
+      Sidekiq::Testing.fake! do
+        Timecop.freeze do
+          migrate!
+
+          expect(described_class::MIGRATION).to be_scheduled_delayed_migration(2.minutes, 1, 2)
+          expect(described_class::MIGRATION).to be_scheduled_delayed_migration(4.minutes, 3, 3)
+          expect(BackgroundMigrationWorker.jobs.size).to eq(2)
+        end
+      end
+    end
+  end
+end

spec/models/project_setting_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe ProjectSetting, type: :model do
+  it { is_expected.to belong_to(:project) }
+end

spec/models/project_spec.rb

@@ -69,6 +69,7 @@ describe Project do
     it { is_expected.to have_one(:forked_from_project).through(:fork_network_member) }
     it { is_expected.to have_one(:auto_devops).class_name('ProjectAutoDevops') }
     it { is_expected.to have_one(:error_tracking_setting).class_name('ErrorTracking::ProjectErrorTrackingSetting') }
+    it { is_expected.to have_one(:project_setting) }
     it { is_expected.to have_many(:commit_statuses) }
     it { is_expected.to have_many(:ci_pipelines) }
     it { is_expected.to have_many(:builds) }
@@ -155,6 +156,11 @@ describe Project do
         expect(project.pages_metadatum).to be_an_instance_of(ProjectPagesMetadatum)
         expect(project.pages_metadatum).to be_persisted
       end
+
+      it 'automatically creates a project setting row' do
+        expect(project.project_setting).to be_an_instance_of(ProjectSetting)
+        expect(project.project_setting).to be_persisted
+      end
     end
 
     context 'updating cd_cd_settings' do

spec/services/projects/create_service_spec.rb

@@ -43,6 +43,12 @@ describe Projects::CreateService, '#execute' do
 
       create_project(user, opts)
     end
+
+    it 'creates associated project settings' do
+      project = create_project(user, opts)
+
+      expect(project.project_setting).to be_persisted
+    end
   end
 
   context "admin creates project with other user's namespace_id" do