Introduce required_code_owners_sections table

It's required to implement section based approval rules

changelogs/unreleased/id-required-sections.yml

+---
+title: Introduce required_code_owners_sections table
+merge_request: 43573
+author:
+type: added

db/migrate/20200928131934_create_required_code_owners_sections.rb

+# frozen_string_literal: true
+
+class CreateRequiredCodeOwnersSections < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    with_lock_retries do
+      create_table :required_code_owners_sections, if_not_exists: true do |t|
+        t.references :protected_branch, null: false, foreign_key: { on_delete: :cascade }
+        t.text :name, null: false
+      end
+    end
+
+    add_text_limit :required_code_owners_sections, :name, 1024
+  end
+
+  def down
+    with_lock_retries do
+      drop_table :required_code_owners_sections, if_exists: true
+    end
+  end
+end

db/schema_migrations/20200928131934

+106757b0f30d3c89fcafa13be92271090fa107831fd538ee087d7ce212842492
\ No newline at end of file

db/structure.sql

@@ -15448,6 +15448,22 @@ CREATE TABLE repository_languages (
     share double precision NOT NULL
 );
 
+CREATE TABLE required_code_owners_sections (
+    id bigint NOT NULL,
+    protected_branch_id bigint NOT NULL,
+    name text NOT NULL,
+    CONSTRAINT check_e58d53741e CHECK ((char_length(name) <= 1024))
+);
+
+CREATE SEQUENCE required_code_owners_sections_id_seq
+    START WITH 1
+    INCREMENT BY 1
+    NO MINVALUE
+    NO MAXVALUE
+    CACHE 1;
+
+ALTER SEQUENCE required_code_owners_sections_id_seq OWNED BY required_code_owners_sections.id;
+
 CREATE TABLE requirements (
     id bigint NOT NULL,
     created_at timestamp with time zone NOT NULL,
@@ -17746,6 +17762,8 @@ ALTER TABLE ONLY releases ALTER COLUMN id SET DEFAULT nextval('releases_id_seq':
 
 ALTER TABLE ONLY remote_mirrors ALTER COLUMN id SET DEFAULT nextval('remote_mirrors_id_seq'::regclass);
 
+ALTER TABLE ONLY required_code_owners_sections ALTER COLUMN id SET DEFAULT nextval('required_code_owners_sections_id_seq'::regclass);
+
 ALTER TABLE ONLY requirements ALTER COLUMN id SET DEFAULT nextval('requirements_id_seq'::regclass);
 
 ALTER TABLE ONLY requirements_management_test_reports ALTER COLUMN id SET DEFAULT nextval('requirements_management_test_reports_id_seq'::regclass);
@@ -19027,6 +19045,9 @@ ALTER TABLE ONLY releases
 ALTER TABLE ONLY remote_mirrors
     ADD CONSTRAINT remote_mirrors_pkey PRIMARY KEY (id);
 
+ALTER TABLE ONLY required_code_owners_sections
+    ADD CONSTRAINT required_code_owners_sections_pkey PRIMARY KEY (id);
+
 ALTER TABLE ONLY requirements_management_test_reports
     ADD CONSTRAINT requirements_management_test_reports_pkey PRIMARY KEY (id);
 
@@ -21202,6 +21223,8 @@ CREATE INDEX index_remote_mirrors_on_project_id ON remote_mirrors USING btree (p
 
 CREATE UNIQUE INDEX index_repository_languages_on_project_and_languages_id ON repository_languages USING btree (project_id, programming_language_id);
 
+CREATE INDEX index_required_code_owners_sections_on_protected_branch_id ON required_code_owners_sections USING btree (protected_branch_id);
+
 CREATE INDEX index_requirements_management_test_reports_on_author_id ON requirements_management_test_reports USING btree (author_id);
 
 CREATE INDEX index_requirements_management_test_reports_on_build_id ON requirements_management_test_reports USING btree (build_id);
@@ -23299,6 +23322,9 @@ ALTER TABLE ONLY clusters_kubernetes_namespaces
 ALTER TABLE ONLY approval_merge_request_rules_users
     ADD CONSTRAINT fk_rails_80e6801803 FOREIGN KEY (approval_merge_request_rule_id) REFERENCES approval_merge_request_rules(id) ON DELETE CASCADE;
 
+ALTER TABLE ONLY required_code_owners_sections
+    ADD CONSTRAINT fk_rails_817708cf2d FOREIGN KEY (protected_branch_id) REFERENCES protected_branches(id) ON DELETE CASCADE;
+
 ALTER TABLE ONLY dast_site_profiles
     ADD CONSTRAINT fk_rails_83e309d69e FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE;
 

ee/app/models/concerns/ee/protected_branch.rb

@@ -7,6 +7,8 @@ module EE
     prepended do
       has_and_belongs_to_many :approval_project_rules
 
+      has_many :required_code_owners_sections, class_name: "ProtectedBranch::RequiredCodeOwnersSection"
+
       protected_ref_access_levels :unprotect
     end
 

ee/app/models/protected_branch/required_code_owners_section.rb

+# frozen_string_literal: true
+
+class ProtectedBranch::RequiredCodeOwnersSection < ApplicationRecord
+  self.table_name = 'required_code_owners_sections'
+
+  belongs_to :protected_branch
+end

ee/spec/models/ee/protected_branch_spec.rb

@@ -8,6 +8,10 @@ RSpec.describe ProtectedBranch do
   let(:project) { subject.project }
   let(:user) { create(:user) }
 
+  describe 'associations' do
+    it { is_expected.to have_many(:required_code_owners_sections).class_name('ProtectedBranch::RequiredCodeOwnersSection') }
+  end
+
   shared_examples 'uniqueness validation' do |access_level_class|
     let(:factory_name) { access_level_class.to_s.underscore.sub('/', '_').to_sym }
     let(:association_name) { access_level_class.to_s.underscore.sub('protected_branch/', '').pluralize.to_sym }

ee/spec/models/protected_branch/required_code_owners_section_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe ProtectedBranch::RequiredCodeOwnersSection do
+  describe 'associations' do
+    it { is_expected.to belong_to(:protected_branch) }
+  end
+end

spec/lib/gitlab/import_export/all_models.yml

@@ -304,6 +304,7 @@ protected_branches:
 - push_access_levels
 - unprotect_access_levels
 - approval_project_rules
+- required_code_owners_sections
 protected_tags:
 - project
 - create_access_levels