Add filepath column to release_links

Part of https://gitlab.com/gitlab-org/gitlab/issues/27300

app/models/releases/link.rb

@@ -6,8 +6,11 @@ module Releases
 
     belongs_to :release
 
+    FILEPATH_REGEX = /\A\/([\-\.\w]+\/?)*[\da-zA-Z]+\z/.freeze
+
     validates :url, presence: true, addressable_url: { schemes: %w(http https ftp) }, uniqueness: { scope: :release }
     validates :name, presence: true, uniqueness: { scope: :release }
+    validates :filepath, uniqueness: { scope: :release }, format: { with: FILEPATH_REGEX }, allow_blank: true, length: { maximum: 128 }
 
     scope :sorted, -> { order(created_at: :desc) }
 

changelogs/unreleased/27300-enable-a-direct-link-to-a-release-and-release-assets-2.yml

+---
+title: Add filepath to ReleaseLink
+merge_request: 25512
+author:
+type: added

db/migrate/20200219105209_add_filepath_to_release_links.rb

+# frozen_string_literal: true
+class AddFilepathToReleaseLinks < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :release_links, :filepath, :string, limit: 128
+  end
+end

db/schema.rb

@@ -3648,6 +3648,7 @@ ActiveRecord::Schema.define(version: 2020_02_21_105436) do
     t.string "name", null: false
     t.datetime_with_timezone "created_at", null: false
     t.datetime_with_timezone "updated_at", null: false
+    t.string "filepath", limit: 128
     t.index ["release_id", "name"], name: "index_release_links_on_release_id_and_name", unique: true
     t.index ["release_id", "url"], name: "index_release_links_on_release_id_and_url", unique: true
   end

spec/factories/releases/link.rb

@@ -5,5 +5,6 @@ FactoryBot.define do
     release
     sequence(:name) { |n| "release-18.#{n}.dmg" }
     sequence(:url) { |n| "https://example.com/scrambled-url/app-#{n}.zip" }
+    sequence(:filepath) { |n| "/binaries/awesome-app-#{n}" }
   end
 end

spec/lib/gitlab/import_export/safe_model_attributes.yml

@@ -133,6 +133,7 @@ Releases::Link:
 - id
 - url
 - name
+- filepath
 - created_at
 - updated_at
 ProjectMember:

spec/models/releases/link_spec.rb

@@ -13,6 +13,7 @@ describe Releases::Link do
   describe 'validation' do
     it { is_expected.to validate_presence_of(:url) }
     it { is_expected.to validate_presence_of(:name) }
+    it { is_expected.to validate_length_of(:filepath).is_at_most(128) }
 
     context 'when url is invalid' do
       let(:link) { build(:release_link, url: 'hoge') }
@@ -43,6 +44,16 @@ describe Releases::Link do
     end
   end
 
+  context 'when duplicate filepath is added to a release' do
+    let!(:link) { create(:release_link, filepath: '/binaries/gitlab-runner-linux-amd64', release: release) }
+
+    it 'raises an error' do
+      expect do
+        create(:release_link, filepath: '/binaries/gitlab-runner-linux-amd64', release: release)
+      end.to raise_error(ActiveRecord::RecordInvalid)
+    end
+  end
+
   describe '.sorted' do
     subject { described_class.sorted }
 
@@ -101,4 +112,38 @@ describe Releases::Link do
       end
     end
   end
+
+  describe 'FILEPATH_REGEX with table' do
+    using RSpec::Parameterized::TableSyntax
+
+    let(:link) { build(:release_link)}
+
+    where(:reason, :filepath, :result) do
+      'cannot contain `//`'         | '/https//www.example.com'     | be_invalid
+      'cannot start with `//`'      | '//www.example.com'           | be_invalid
+      'cannot contain a `?`'        | '/example.com/?stuff=true'    | be_invalid
+      'cannot contain a `:`'        | '/example:5000'               | be_invalid
+      'cannot end in a `-`'         | '/binaries/awesome-app.dmg-'  | be_invalid
+      'cannot end in a `.`'         | '/binaries/awesome-app.dmg.'  | be_invalid
+      'cannot end in a `_`'         | '/binaries/awesome-app.dmg_'  | be_invalid
+      'cannot start with a `.`'     | '.binaries/awesome-app.dmg'   | be_invalid
+      'cannot start with a `-`'     | '-binaries/awesome-app.dmg'   | be_invalid
+      'cannot start with a `_`'     | '_binaries/awesome-app.dmg'   | be_invalid
+      'cannot start with a number'  | '3binaries/awesome-app.dmg'   | be_invalid
+      'cannot start with a letter'  | 'binaries/awesome-app.dmg'    | be_invalid
+      'cannot contain accents'      | '/binarïes/âwésome-app.dmg'   | be_invalid
+      'can end in a character'      | '/binaries/awesome-app.dmg'   | be_valid
+      'can end in a number'         | '/binaries/awesome-app-1'     | be_valid
+      'can contain one or more dots, dashes or underscores' | '/sub_tr__ee.ex..ample-2--1/v99.com' | be_valid
+      'can contain multiple non-sequential slashes' | '/example.com/path/to/file.exe' | be_valid
+      'can be nil' | nil | be_valid
+    end
+
+    with_them do
+      specify do
+        link.filepath = filepath
+        expect(link).to result
+      end
+    end
+  end
 end