Add runner setup controllers

Add runner setup controllers

app/controllers/admin/runners_controller.rb

 # frozen_string_literal: true
 
 class Admin::RunnersController < Admin::ApplicationController
-  before_action :runner, except: [:index, :tag_list]
+  include RunnerSetupScripts
+
+  before_action :runner, except: [:index, :tag_list, :runner_setup_scripts]
 
   def index
     finder = Ci::RunnersFinder.new(current_user: current_user, params: params)
@@ -53,6 +55,10 @@ class Admin::RunnersController < Admin::ApplicationController
     render json: ActsAsTaggableOn::TagSerializer.new.represent(tags)
   end
 
+  def runner_setup_scripts
+    private_runner_setup_scripts
+  end
+
   private
 
   def runner

app/controllers/concerns/runner_setup_scripts.rb

+# frozen_string_literal: true
+
+module RunnerSetupScripts
+  extend ActiveSupport::Concern
+
+  private
+
+  def private_runner_setup_scripts(**kwargs)
+    instructions = Gitlab::Ci::RunnerInstructions.new(current_user: current_user, os: script_params[:os], arch: script_params[:arch], **kwargs)
+    output = {
+      install: instructions.install_script,
+      register: instructions.register_command
+    }
+
+    if instructions.errors.any?
+      render json: { errors: instructions.errors }, status: :bad_request
+    else
+      render json: output
+    end
+  end
+
+  def script_params
+    params.permit(:os, :arch)
+  end
+end

app/controllers/groups/settings/ci_cd_controller.rb

@@ -3,6 +3,8 @@
 module Groups
   module Settings
     class CiCdController < Groups::ApplicationController
+      include RunnerSetupScripts
+
       skip_cross_project_access_check :show
       before_action :authorize_admin_group!
       before_action :authorize_update_max_artifacts_size!, only: [:update]
@@ -49,6 +51,10 @@ module Groups
         redirect_to group_settings_ci_cd_path
       end
 
+      def runner_setup_scripts
+        private_runner_setup_scripts(group: group)
+      end
+
       private
 
       def define_variables

app/controllers/projects/settings/ci_cd_controller.rb

@@ -3,6 +3,8 @@
 module Projects
   module Settings
     class CiCdController < Projects::ApplicationController
+      include RunnerSetupScripts
+
       before_action :authorize_admin_pipeline!
       before_action :define_variables
       before_action do
@@ -52,6 +54,10 @@ module Projects
         redirect_to namespace_project_settings_ci_cd_path
       end
 
+      def runner_setup_scripts
+        private_runner_setup_scripts(project: @project)
+      end
+
       private
 
       def update_params

app/controllers/runner_setup_controller.rb

+# frozen_string_literal: true
+
+class RunnerSetupController < ApplicationController
+  def platforms
+    render json: Gitlab::Ci::RunnerInstructions::OS.merge(Gitlab::Ci::RunnerInstructions::OTHER_ENVIRONMENTS)
+  end
+end

changelogs/unreleased/jivanvl-runner-guided-install-backend.yml

+---
+title: Add runner setup methods
+merge_request: 42878
+author:
+type: added

config/routes.rb

@@ -89,6 +89,8 @@ Rails.application.routes.draw do
     resources :metrics, only: [:index]
     mount Peek::Railtie => '/peek', as: 'peek_routes'
 
+    get 'runner_setup/platforms' => 'runner_setup#platforms'
+
     # Boards resources shared between group and projects
     resources :boards, only: [] do
       resources :lists, module: :boards, only: [:index, :create, :update, :destroy] do

config/routes/admin.rb

@@ -151,6 +151,7 @@ namespace :admin do
 
     collection do
       get :tag_list, format: :json
+      get :runner_setup_scripts, format: :json
     end
   end
 

config/routes/group.rb

@@ -35,6 +35,7 @@ constraints(::Constraints::GroupUrlConstrainer.new) do
         put :reset_registration_token
         patch :update_auto_devops
         post :create_deploy_token, path: 'deploy_token/create', to: 'repository#create_deploy_token'
+        get :runner_setup_scripts, format: :json
       end
 
       resource :repository, only: [:show], controller: 'repository' do

config/routes/project.rb

@@ -93,6 +93,7 @@ constraints(::Constraints::ProjectUrlConstrainer.new) do
             post :reset_cache
             put :reset_registration_token
             post :create_deploy_token, path: 'deploy_token/create', to: 'repository#create_deploy_token'
+            get :runner_setup_scripts, format: :json
           end
 
           resource :operations, only: [:show, :update] do

spec/controllers/admin/runners_controller_spec.rb

@@ -151,4 +151,21 @@ RSpec.describe Admin::RunnersController do
       expect(runner.active).to eq(false)
     end
   end
+
+  describe 'GET #runner_setup_scripts' do
+    it 'renders the setup scripts' do
+      get :runner_setup_scripts, params: { os: 'linux', arch: 'amd64' }
+
+      expect(response).to have_gitlab_http_status(:ok)
+      expect(json_response).to have_key("install")
+      expect(json_response).to have_key("register")
+    end
+
+    it 'renders errors if they occur' do
+      get :runner_setup_scripts, params: { os: 'foo', arch: 'bar' }
+
+      expect(response).to have_gitlab_http_status(:bad_request)
+      expect(json_response).to have_key("errors")
+    end
+  end
 end

spec/controllers/groups/settings/ci_cd_controller_spec.rb

@@ -225,4 +225,25 @@ RSpec.describe Groups::Settings::CiCdController do
       end
     end
   end
+
+  describe 'GET #runner_setup_scripts' do
+    before do
+      group.add_owner(user)
+    end
+
+    it 'renders the setup scripts' do
+      get :runner_setup_scripts, params: { os: 'linux', arch: 'amd64', group_id: group }
+
+      expect(response).to have_gitlab_http_status(:ok)
+      expect(json_response).to have_key("install")
+      expect(json_response).to have_key("register")
+    end
+
+    it 'renders errors if they occur' do
+      get :runner_setup_scripts, params: { os: 'foo', arch: 'bar', group_id: group }
+
+      expect(response).to have_gitlab_http_status(:bad_request)
+      expect(json_response).to have_key("errors")
+    end
+  end
 end

spec/controllers/projects/settings/ci_cd_controller_spec.rb

@@ -266,4 +266,21 @@ RSpec.describe Projects::Settings::CiCdController do
       end
     end
   end
+
+  describe 'GET #runner_setup_scripts' do
+    it 'renders the setup scripts' do
+      get :runner_setup_scripts, params: { os: 'linux', arch: 'amd64', namespace_id: project.namespace, project_id: project }
+
+      expect(response).to have_gitlab_http_status(:ok)
+      expect(json_response).to have_key("install")
+      expect(json_response).to have_key("register")
+    end
+
+    it 'renders errors if they occur' do
+      get :runner_setup_scripts, params: { os: 'foo', arch: 'bar', namespace_id: project.namespace, project_id: project }
+
+      expect(response).to have_gitlab_http_status(:bad_request)
+      expect(json_response).to have_key("errors")
+    end
+  end
 end

spec/controllers/runner_setup_controller_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe RunnerSetupController do
+  let(:user) { create(:user) }
+
+  before do
+    sign_in(user)
+  end
+
+  describe 'GET #platforms' do
+    it 'renders the platforms' do
+      get :platforms
+
+      expect(response).to have_gitlab_http_status(:ok)
+      expect(json_response).to have_key("windows")
+      expect(json_response).to have_key("kubernetes")
+    end
+  end
+end

spec/routing/admin_routing_spec.rb

@@ -184,3 +184,9 @@ RSpec.describe Admin::PlanLimitsController, "routing" do
     expect(post("/admin/plan_limits")).to route_to('admin/plan_limits#create')
   end
 end
+
+RSpec.describe Admin::RunnersController, "routing" do
+  it "to #runner_setup_scripts" do
+    expect(get("/admin/runners/runner_setup_scripts")).to route_to('admin/runners#runner_setup_scripts')
+  end
+end

spec/routing/group_routing_spec.rb

@@ -43,6 +43,10 @@ RSpec.shared_examples 'groups routing' do
     expect(get("/groups/#{group_path}/-/milestones")).to route_to('groups/milestones#index', group_id: group_path)
   end
 
+  it "to #runner_setup_scripts" do
+    expect(get("/groups/#{group_path}/-/settings/ci_cd/runner_setup_scripts")).to route_to('groups/settings/ci_cd#runner_setup_scripts', group_id: group_path)
+  end
+
   it 'routes to the avatars controller' do
     expect(delete("/groups/#{group_path}/-/avatar"))
       .to route_to(group_id: group_path,

spec/routing/project_routing_spec.rb

@@ -731,6 +731,12 @@ RSpec.describe 'project routing' do
     end
   end
 
+  describe Projects::Settings::CiCdController, 'routing' do
+    it "to #runner_setup_scripts" do
+      expect(get("/gitlab/gitlabhq/-/settings/ci_cd/runner_setup_scripts")).to route_to('projects/settings/ci_cd#runner_setup_scripts', namespace_id: 'gitlab', project_id: 'gitlabhq')
+    end
+  end
+
   describe Projects::TemplatesController, 'routing' do
     describe '#show' do
       def show_with_template_type(template_type)

spec/routing/routing_spec.rb

@@ -374,3 +374,9 @@ RSpec.describe Snippets::BlobsController, "routing" do
       .to route_to('snippets/blobs#raw', snippet_id: '1', ref: 'master', path: 'lib/version.rb')
   end
 end
+
+RSpec.describe RunnerSetupController, 'routing' do
+  it 'to #platforms' do
+    expect(get("/-/runner_setup/platforms")).to route_to('runner_setup#platforms')
+  end
+end