Support integration with Koding (online IDE)

Koding: #index: landing page for Koding integration

If enabled it will provide a link to open remote Koding instance url
for now we are also providing the sneak preview video for how
integration works in detail.

Repository: check whether .koding.yml file exists on repository

Projects: landing page: show Run in IDE (Koding) button if repo has stack file

Projects: MR: show Run in IDE Koding button if repo has stack file on active branch

ProjectHelpers: add_koding_stack: stack generator for provided project

With this helper we will auto-generate the required stack template
for a given project. For the feature we can request this base template
from the running Koding instance on integration.

Currently this will provide users to create a t2.nano instance on aws
and it'll automatically configures the instance for basic requirements.

Projects: empty state and landing page provide shortcuts to create stack

projects_helper: use branch on checkout and provide an entry point

This ${var.koding_queryString_branch} will be replaced with the branch
provided in query string which will allow us to use same stack template
for different branches of the same repository.

ref: https://github.com/koding/koding/pull/8597/commits/b8c0e43c4c24bf132670aa8a3cfb0d634acfd09b

projects_helper: provide sha info in query string to use existing vms

With this change we'll be able to query existing vms on Koding side
based on the commit id that they've created.

ref: https://github.com/koding/koding/pull/8597/commits/1d630fadf31963fa6ccd3bed92e526761a30a343

Integration: Docs: Koding documentation added

Disable /koding route if integration is disabled

Use application settings to enable Koding

Projects_helper: better indentation with strip_heredoc usage

Projects_helper: return koding_url as is if there is no project provided

current_settings: set koding_enabled: false by default

Koding_Controller: to render not_found once integration is disabled

Dashboard_specs: update spec for Koding enabled case

Projects_Helper: make repo dynamic

ref: https://github.com/koding/koding/pull/8597/commits/4d615242f45aaea4c4986be84ecc612b0bb1514c

Updated documentation to have right format

CHANGELOG

@@ -4,6 +4,7 @@ v 8.11.0 (unreleased)
   - Use test coverage value from the latest successful pipeline in badge. !5862
   - Add test coverage report badge. !5708
   - Remove the http_parser.rb dependency by removing the tinder gem. !5758 (tbalthazar)
+  - Add Koding (online IDE) integration
   - Ability to specify branches for Pivotal Tracker integration (Egor Lynko)
   - Fix don't pass a local variable called `i` to a partial. !20510 (herminiotorres)
   - Add delimiter to project stars and forks count (ClemMakesApps)

app/assets/images/koding-logo.svg

+<?xml version="1.0" encoding="utf-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 12 14">
+    <g fill="#d6d7d9">
+        <path d="M8.7 0L5.3.3l3.2 6.8-3.2 6.6 3.5.3L12 6.9z"/>
+        <ellipse cx="1.7" cy="11.1" rx="1.7" ry="1.7"/>
+        <ellipse cx="1.7" cy="5.6" rx="1.7" ry="1.7"/>
+    </g>
+</svg>
\ No newline at end of file

app/controllers/admin/application_settings_controller.rb

@@ -109,6 +109,8 @@ class Admin::ApplicationSettingsController < Admin::ApplicationController
       :sentry_dsn,
       :akismet_enabled,
       :akismet_api_key,
+      :koding_enabled,
+      :koding_url,
       :email_author_in_body,
       :repository_checks_enabled,
       :metrics_packet_size,

app/controllers/koding_controller.rb

+class KodingController < ApplicationController
+  before_action :check_integration!, :authenticate_user!, :reject_blocked!
+  layout 'koding'
+
+  def index
+    path = File.join(Rails.root, 'doc/integration/koding-usage.md')
+    @markdown = File.read(path)
+  end
+
+  private
+
+  def check_integration!
+    render_404 unless current_application_settings.koding_enabled?
+  end
+end

app/helpers/application_settings_helper.rb

@@ -31,6 +31,10 @@ module ApplicationSettingsHelper
     current_application_settings.akismet_enabled?
   end
 
+  def koding_enabled?
+    current_application_settings.koding_enabled?
+  end
+
   def allowed_protocols_present?
     current_application_settings.enabled_git_access_protocol.present?
   end

app/helpers/projects_helper.rb

@@ -236,6 +236,60 @@ module ProjectsHelper
     )
   end
 
+  def add_koding_stack_path(project)
+    namespace_project_new_blob_path(
+      project.namespace,
+      project,
+      project.default_branch || 'master',
+      file_name:      '.koding.yml',
+      commit_message: "Add Koding stack script",
+      content: <<-CONTENT.strip_heredoc
+        provider:
+          aws:
+            access_key: '${var.aws_access_key}'
+            secret_key: '${var.aws_secret_key}'
+        resource:
+          aws_instance:
+            #{project.path}-vm:
+              instance_type: t2.nano
+              user_data: |-
+
+                # Created by GitLab UI for :>
+
+                echo _KD_NOTIFY_@Installing Base packages...@
+
+                apt-get update -y
+                apt-get install git -y
+
+                echo _KD_NOTIFY_@Cloning #{project.name}...@
+
+                export KODING_USER=${var.koding_user_username}
+                export REPO_URL=#{root_url}${var.koding_queryString_repo}.git
+                export BRANCH=${var.koding_queryString_branch}
+
+                sudo -i -u $KODING_USER git clone $REPO_URL -b $BRANCH
+
+                echo _KD_NOTIFY_@#{project.name} cloned.@
+      CONTENT
+    )
+  end
+
+  def koding_project_url(project = nil, branch = nil, sha = nil)
+    if project
+      import_path = "/Home/Stacks/import"
+
+      repo = project.path_with_namespace
+      branch ||= project.default_branch
+      sha ||= project.commit.short_id
+
+      path = "#{import_path}?repo=#{repo}&branch=#{branch}&sha=#{sha}"
+
+      return URI.join(current_application_settings.koding_url, path).to_s
+    end
+
+    current_application_settings.koding_url
+  end
+
   def contribution_guide_path(project)
     if project && contribution_guide = project.repository.contribution_guide
       namespace_project_blob_path(

app/models/application_setting.rb

@@ -55,6 +55,10 @@ class ApplicationSetting < ActiveRecord::Base
             presence: true,
             if: :akismet_enabled
 
+  validates :koding_url,
+            presence: true,
+            if: :koding_enabled
+
   validates :max_attachment_size,
             presence: true,
             numericality: { only_integer: true, greater_than: 0 }
@@ -149,6 +153,8 @@ class ApplicationSetting < ActiveRecord::Base
       two_factor_grace_period: 48,
       recaptcha_enabled: false,
       akismet_enabled: false,
+      koding_enabled: false,
+      koding_url: nil,
       repository_checks_enabled: true,
       disabled_oauth_sign_in_sources: [],
       send_user_confirmation_email: false,

app/models/repository.rb

@@ -277,7 +277,7 @@ class Repository
   def cache_keys
     %i(size commit_count
        readme version contribution_guide changelog
-       license_blob license_key gitignore)
+       license_blob license_key gitignore koding_yml)
   end
 
   # Keys for data on branch/tag operations.
@@ -553,6 +553,14 @@ class Repository
     end
   end
 
+  def koding_yml
+    return nil unless head_exists?
+
+    cache.fetch(:koding_yml) do
+      file_on_head(/\A\.koding\.yml\z/)
+    end
+  end
+
   def gitlab_ci_yml
     return nil unless head_exists?
 

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

@@ -388,6 +388,25 @@
         .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 Koding
+    .form-group
+      .col-sm-offset-2.col-sm-10
+        .checkbox
+          = f.label :koding_enabled do
+            = f.check_box :koding_enabled
+            Enable Koding
+    .form-group
+      = f.label :koding_url, 'Koding URL', class: 'control-label col-sm-2'
+      .col-sm-10
+        = f.text_field :koding_url, class: 'form-control', placeholder: 'http://gitlab.your-koding-instance.com:8090'
+        .help-block
+          Koding has integration enabled out of the box for the
+          %strong gitlab
+          team, and you need to provide that team's URL here. Learn more in the
+          = succeed "." do
+            = link_to "Koding integration documentation", help_page_path("integration/koding")
+
 
   .form-actions
     = f.submit 'Save', class: 'btn btn-save'

app/views/koding/index.html.haml

+.row-content-block.second-block.center
+  %p
+    = icon('circle', class: 'cgreen')
+    Integration is active for
+    = link_to koding_project_url, target: '_blank' do
+      #{current_application_settings.koding_url}
+
+.documentation.wiki
+  = markdown @markdown

app/views/layouts/koding.html.haml

+- page_title        "Koding"
+- page_description  "Koding Dashboard"
+- header_title      "Koding", koding_path
+
+= render template: "layouts/application"

app/views/layouts/nav/_dashboard.html.haml

@@ -12,6 +12,11 @@
     = link_to activity_dashboard_path, class: 'dashboard-shortcuts-activity', title: 'Activity' do
       %span
         Activity
+  - if koding_enabled?
+    = nav_link(controller: :koding) do
+      = link_to koding_path, title: 'Koding' do
+        %span
+          Koding
   = nav_link(controller: [:groups, 'groups/milestones', 'groups/group_members']) do
     = link_to dashboard_groups_path, title: 'Groups' do
       %span

app/views/projects/buttons/_koding.html.haml

+- if koding_enabled? && current_user && can_push_branch?(@project, @project.default_branch)
+  - if @repository.koding_yml
+    = link_to koding_project_url(@project), class: 'btn', target: '_blank' do
+      Run in IDE (Koding)
+  - else
+    = link_to add_koding_stack_path(@project), class: 'btn' do
+      Set Up Koding

app/views/projects/merge_requests/_show.html.haml

@@ -16,6 +16,9 @@
       - if @merge_request.open?
         .pull-right
           - if @merge_request.source_branch_exists?
+            - if koding_enabled? && @repository.koding_yml
+              = link_to koding_project_url(@merge_request.source_project, @merge_request.source_branch, @merge_request.commits.first.short_id), class: "btn inline btn-grouped btn-sm", target: '_blank' do
+                Run in IDE (Koding)
             = link_to "#modal_merge_info", class: "btn inline btn-grouped btn-sm", "data-toggle" => "modal" do
               Check out branch
 

app/views/projects/show.html.haml

@@ -64,10 +64,12 @@
         %li.missing
           = link_to add_special_file_path(@project, file_name: '.gitlab-ci.yml') do
             Set Up CI
+
     %li.project-repo-buttons-right
       .project-repo-buttons.project-right-buttons
         - if current_user
           = render 'shared/members/access_request_buttons', source: @project
+          = render "projects/buttons/koding"
 
         .btn-group.project-repo-btn-group
           = render "projects/buttons/download"
@@ -86,4 +88,4 @@
         Archived project! Repository is read-only
 
   %div{class: "project-show-#{default_project_view}"}
-    = render default_project_view
\ No newline at end of file
+    = render default_project_view

config/routes.rb

@@ -90,6 +90,11 @@ Rails.application.routes.draw do
   get 'help/ui'        => 'help#ui'
   get 'help/*path'     => 'help#show', as: :help_page
 
+  #
+  # Koding route
+  #
+  get 'koding' => 'koding#index'
+
   #
   # Global snippets
   #

db/migrate/20160817133006_add_koding_to_application_settings.rb

+class AddKodingToApplicationSettings < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def change
+    add_column :application_settings, :koding_enabled, :boolean
+    add_column :application_settings, :koding_url, :string
+  end
+end

db/schema.rb

@@ -90,6 +90,8 @@ ActiveRecord::Schema.define(version: 20160818205718) do
     t.string   "enabled_git_access_protocol"
     t.boolean  "domain_blacklist_enabled",              default: false
     t.text     "domain_blacklist"
+    t.boolean  "koding_enabled"
+    t.string   "koding_url"
   end
 
   create_table "audit_events", force: :cascade do |t|

doc/integration/README.md

@@ -15,6 +15,7 @@ See the documentation below for details on how to configure these services.
 - [Gmail actions buttons](gmail_action_buttons_for_gitlab.md) Adds GitLab actions to messages
 - [reCAPTCHA](recaptcha.md) Configure GitLab to use Google reCAPTCHA for new users
 - [Akismet](akismet.md) Configure Akismet to stop spam
+- [Koding](koding.md) Configure Koding to use IDE integration
 
 GitLab Enterprise Edition contains [advanced Jenkins support][jenkins].
 

doc/integration/koding-usage.md

+# Koding & GitLab
+
+This document will guide you through using Koding integration on GitLab in
+detail. For configuring and installing please follow [this](koding.md) guide.
+
+You can use Koding integration to run and develop your projects on GitLab. This
+will allow you and the users to test your project without leaving the browser.
+Koding handles projects as stacks which are basic recipes to define your
+environment for your project. With this integration you can automatically
+create a proper stack template for your projects. Currently auto-generated
+stack templates are designed to work with AWS which requires a valid AWS
+credential to be able to use these stacks. You can find more information about
+stacks and the other providers that you can use on Koding from
+[here](https://www.koding.com/docs).
+
+
+# Enable Integration
+
+You can enable Koding integration by providing the running Koding instance URL
+in Application Settings;
+
+ - Open **Admin area > Settings** (`/admin/application_settings`).
+
+![Enable Koding](help/integration/img/koding_enable-koding.png)
+
+Once enabled you will see `Koding` link on your sidebar which leads you to
+Koding Landing page
+
+![Koding Landing](help/integration/img/koding_landing.png)
+
+You can navigate to running Koding instance from here. For more information and
+details about configuring integration please follow [this](koding.md) guide.
+
+
+# Set up Koding on Projects
+
+Once it's enabled, you will see some integration buttons on Project pages,
+Merge Requests etc. To get started working on a specific project you first need
+to create a `.koding.yml` file under your project root. You can easily do that
+by using `Set Up Koding` button which will be visible on every project's
+landing page;
+
+![Set Up Koding](help/integration/img/koding_set-up-ide.png)
+
+Once you click this will open a New File page on GitLab with auto-generated
+`.koding.yml` content based on your server and repository configuration.
+
+![Commit .koding.yml](help/integration/img/koding_commit-koding.yml.png)
+
+
+# Run a project on Koding
+
+If there is `.koding.yml` exists in your project root, you will see
+`Run in IDE (Koding)` button in your project landing page. You can initiate the
+process from here.
+
+![Run on Koding](help/integration/img/koding_run-in-ide.png)
+
+This will open Koding defined in the settings in a new window and will start
+importing the project's stack file;
+
+![Import Stack](help/integration/img/koding_stack-import.png)
+
+You should see the details of your repository imported into your Koding
+instance. Once it's completed it will lead you to the Stack Editor and from
+there you can start using your new stack integrated with your project on your
+GitLab instance. For details about what's next you can follow
+[this](https://www.koding.com/docs/creating-an-aws-stack) guide from 8. step.
+
+Once stack initialized you will see the `README.md` content from your project
+in `Stack Build` wizard, this wizard will let you to build the stack and import
+your project into it. **Once it's completed it will automatically open the
+related vm instead of importing from scratch**
+
+![Stack Building](help/integration/img/koding_start-build.png)
+
+This will take time depending on the required environment.
+
+![Stack Building in Progress](help/integration/img/koding_build-in-progress.png)
+
+It usually takes ~4 min. to make it ready with a `t2.nano` instance on given
+AWS region. (`t2.nano` is default vm type on auto-generated stack template
+which can be manually changed)
+
+![Stack Building Success](help/integration/img/koding_build-success.png)
+
+You can check out the `Build Logs` from this success modal as well;
+
+![Stack Build Logs](help/integration/img/koding_build-logs.png)
+
+You can now `Start Coding`!
+
+![Edit On IDE](help/integration/img/koding_edit-on-ide.png)
+
+
+# Try a Merge Request on IDE
+
+It's also possible to try a change on IDE before merging it. This flow only
+enabled if the target project has `.koding.yml` in it's target branch. You
+should see the alternative version of `Run in IDE (Koding)` button in merge
+request pages as well;
+
+![Run in IDE on MR](help/integration/img/koding_run-mr-in-ide.png)
+
+This will again take you to Koding with proper arguments passed, which will
+allow Koding to modify the stack template provided by target branch. You can
+see the difference;
+
+![Different Branch for MR](help/integration/img/koding_different-stack-on-mr-try.png)
+
+The flow for the branch stack is also same with the regular project flow.
+
+
+# Open GitLab from Koding
+
+Since stacks generated with import flow defined in previous steps, they have
+information about the repository they are belonging to. By using this
+information you can access to related GitLab page from stacks on your sidebar
+on Koding.
+
+![Open GitLab from Koding](help/integration/img/koding_open-gitlab-from-koding.png)
+

doc/integration/koding.md

+# Koding & GitLab
+
+This document will guide you through installing and configuring Koding with
+GitLab.
+
+First of all, to be able to use Koding and GitLab together you will need public
+access to your server. This allows you to use single sign-on from GitLab to
+Koding and using vms from cloud providers like AWS. Koding has a registry for
+VMs, called Kontrol and it runs on the same server as Koding itself, VMs from
+cloud providers register themselves to Kontrol via the agent that we put into
+provisioned VMs. This agent is called Klient and it provides Koding to access
+and manage the target machine.
+
+Kontrol and Klient are based on another technology called
+[Kite](github.com/koding/kite), that we have written at Koding. Which is a
+microservice framework that allows you to develop microservices easily.
+
+
+## Requirements
+
+### Hardware
+
+Minimum requirements are;
+
+  - 2 cores CPU
+  - 3G RAM
+  - 10G Storage
+
+If you plan to use AWS to install Koding it is recommended that you use at
+least a `c3.xlarge` instance.
+
+### Software
+
+  - [git](https://git-scm.com)
+  - [docker](https://www.docker.com)
+  - [docker-compose](https://www.docker.com/products/docker-compose)
+
+Koding can run on most of the UNIX based operating systems, since it's shipped
+as containerized with Docker support, it can work on any operating system that
+supports Docker.
+
+Required services are;
+
+  - PostgreSQL # Kontrol and Service DB provider
+  - MongoDB    # Main DB provider the application
+  - Redis      # In memory DB used by both application and services
+  - RabbitMQ   # Message Queue for both application and services
+
+which are also provided as a Docker container by Koding.
+
+
+## Getting Started with Development Versions
+
+
+### Koding
+
+You can run `docker-compose` environment for developing koding by
+executing commands in the following snippet.
+
+```bash
+git clone https://github.com/koding/koding.git
+cd koding
+docker-compose up
+```
+
+This should start koding on `localhost:8090`.
+
+By default there is no team exists in Koding DB. You'll need to create a team
+called `gitlab` which is the default team name for GitLab integration in the
+configuration. To make things in order it's recommended to create the `gitlab`
+team first thing after setting up Koding.
+
+
+### GitLab
+
+To install GitLab to your environment for development purposes it's recommended
+to use GitLab Development Kit which you can get it from
+[here](https://gitlab.com/gitlab-org/gitlab-development-kit).
+
+After all those steps, gitlab should be running on `localhost:3000`
+
+
+## Integration
+
+Integration includes following components;
+
+  - Single Sign On with OAuth from GitLab to Koding
+  - System Hook integration for handling GitLab events on Koding
+    (`project_created`, `user_joined` etc.)
+  - Service endpoints for importing/executing stacks from GitLab to Koding
+    (`Run/Try on IDE (Koding)` buttons on GitLab Projects, Issues, MRs)
+
+As it's pointed out before, you will need public access to this machine that
+you've installed Koding and GitLab on. Better to use a domain but a static IP
+is also fine.
+
+For IP based installation you can use [xip.io](https://xip.io) service which is
+free and provides DNS resolution to IP based requests like following;
+
+  - 127.0.0.1.xip.io              -> resolves to 127.0.0.1
+  - foo.bar.baz.127.0.0.1.xip.io  -> resolves to 127.0.0.1
+  - and so on...
+
+As Koding needs subdomains for team names; `foo.127.0.0.1.xip.io` requests for
+a running koding instance on `127.0.0.1` server will be handled as `foo` team
+requests.
+
+
+### GitLab Side
+
+You need to enable Koding integration from Settings under Admin Area. To do
+that login with an Admin account and do followings;
+
+ - open [http://127.0.0.1:3000/admin/application_settings](http://127.0.0.1:3000/admin/application_settings)
+ - scroll to bottom of the page until Koding section
+ - check `Enable Koding` checkbox
+ - provide GitLab team page for running Koding instance as `Koding URL`*
+
+* For `Koding URL` you need to provide the gitlab integration enabled team on
+your Koding installation. Team called `gitlab` has integration on Koding out
+of the box, so if you didn't change anything your team on Koding should be
+`gitlab`.
+
+So, if your Koding is running on `http://1.2.3.4.xip.io:8090` your URL needs
+to be `http://gitlab.1.2.3.4.xip.io:8090`. You need to provide the same host
+with your Koding installation here.
+
+
+#### Registering Koding for OAuth integration
+
+We need `Application ID` and `Secret` to enable login to Koding via GitLab
+feature and to do that you need to register running Koding as a new application
+to your running GitLab application. Follow
+[these](http://docs.gitlab.com/ce/integration/oauth_provider.html) steps to
+enable this integration.
+
+Redirect URI should be `http://gitlab.127.0.0.1:8090/-/oauth/gitlab/callback`
+which again you need to _replace `127.0.0.1` with your instance public IP._
+
+Take a copy of `Application ID` and `Secret` that is generated by the GitLab
+application, we will need those on _Koding Part_ of this guide.
+
+
+#### Registering system hooks to Koding (optional)
+
+Koding can take actions based on the events generated by GitLab application.
+This feature is still in progress and only following events are processed by
+Koding at the moment;
+
+  - user_create
+  - user_destroy
+
+All system events are handled but not implemented on Koding side.
+
+To enable this feature you need to provide a `URL` and a `Secret Token` to your
+GitLab application. Open your admin area on your GitLab app from
+[http://127.0.0.1:3000/admin/hooks](http://127.0.0.1:3000/admin/hooks)
+and provide `URL` as `http://gitlab.127.0.0.1:8090/-/api/gitlab` which is the
+endpoint to handle GitLab events on Koding side. Provide a `Secret Token` and
+keep a copy of it, we will need it on _Koding Part_ of this guide.
+
+_(replace `127.0.0.1` with your instance public IP)_
+
+
+### Koding Part
+
+If you followed the steps in GitLab part we should have followings to enable
+Koding part integrations;
+
+  - `Application ID` and `Secret` for OAuth integration
+  - `Secret Token` for system hook integration
+  - Public address of running GitLab instance
+
+
+#### Start Koding with GitLab URL
+
+Now we need to configure Koding with all this information to get things ready.
+If it's already running please stop koding first.
+
+##### From command-line
+
+Replace followings with the ones you got from GitLab part of this guide;
+
+```bash
+cd koding
+docker-compose run                              \
+  --service-ports backend                       \
+  /opt/koding/scripts/bootstrap-container build \
+  --host=**YOUR_IP**.xip.io                     \
+  --gitlabHost=**GITLAB_IP**                    \
+  --gitlabPort=**GITLAB_PORT**                  \
+  --gitlabToken=**SECRET_TOKEN**                \
+  --gitlabAppId=**APPLICATION_ID**              \
+  --gitlabAppSecret=**SECRET**
+```
+
+##### By updating configuration
+
+Alternatively you can update `gitlab` section on
+`config/credentials.default.coffee` like following;
+
+```
+gitlab =
+  host: '**GITLAB_IP**'
+  port: '**GITLAB_PORT**'
+  applicationId: '**APPLICATION_ID**'
+  applicationSecret: '**SECRET**'
+  team: 'gitlab'
+  redirectUri: ''
+  systemHookToken: '**SECRET_TOKEN**'
+  hooksEnabled: yes
+```
+
+and start by only providing the `host`;
+
+```bash
+cd koding
+docker-compose run                              \
+  --service-ports backend                       \
+  /opt/koding/scripts/bootstrap-container build \
+  --host=**YOUR_IP**.xip.io                     \
+```
+
+#### Enable Single Sign On
+
+Once you restarted your Koding and logged in with your username and password
+you need to activate oauth authentication for your user. To do that
+
+ - Navigate to Dashboard on Koding from;
+   `http://gitlab.**YOUR_IP**.xip.io:8090/Home/my-account`
+ - Scroll down to Integrations section
+ - Click on toggle to turn On integration in GitLab integration section
+
+This will redirect you to your GitLab instance and will ask your permission (
+if you are not logged in to GitLab at this point you will be redirected after
+login) once you accept you will be redirected to your Koding instance.
+
+From now on you can login by using `SIGN IN WITH GITLAB` button on your Login
+screen in your Koding instance.

lib/gitlab/current_settings.rb

@@ -30,6 +30,7 @@ module Gitlab
         signup_enabled: Settings.gitlab['signup_enabled'],
         signin_enabled: Settings.gitlab['signin_enabled'],
         gravatar_enabled: Settings.gravatar['enabled'],
+        koding_enabled: false,
         sign_in_text: nil,
         after_sign_up_text: nil,
         help_page_text: nil,

spec/features/security/dashboard_access_spec.rb

@@ -43,6 +43,20 @@ describe "Dashboard access", feature: true  do
     it { is_expected.to be_allowed_for :visitor }
   end
 
+  describe "GET /koding" do
+    subject { koding_path }
+
+    context 'with Koding enabled' do
+      before do
+        stub_application_setting(koding_enabled?: true)
+      end
+
+      it { is_expected.to be_allowed_for :admin }
+      it { is_expected.to be_allowed_for :user }
+      it { is_expected.to be_denied_for :visitor }
+    end
+  end
+
   describe "GET /projects/new" do
     it { expect(new_project_path).to be_allowed_for :admin }
     it { expect(new_project_path).to be_allowed_for :user }

spec/routing/routing_spec.rb

@@ -116,12 +116,19 @@ describe HelpController, "routing" do
     expect(get(path)).to route_to('help#show',
                                   path: 'workflow/protected_branches/protected_branches1',
                                   format: 'png')
-    
+
     path = '/help/ui'
     expect(get(path)).to route_to('help#ui')
   end
 end
 
+#                      koding GET    /koding(.:format)                      koding#index
+describe KodingController, "routing" do
+  it "to #index" do
+    expect(get("/koding")).to route_to('koding#index')
+  end
+end
+
 #             profile_account GET    /profile/account(.:format)             profile#account
 #             profile_history GET    /profile/history(.:format)             profile#history
 #            profile_password PUT    /profile/password(.:format)            profile#password_update