Merge remote-tracking branch 'ce/master'

app/assets/javascripts/labels_select.js

@@ -311,7 +311,8 @@ export default class LabelsSelect {
 
           // We need to identify which items are actually labels
           if (label.id) {
-            selectedClass.push('label-item');
+            const selectedLayoutClasses = ['d-flex', 'flex-row', 'text-break-word'];
+            selectedClass.push('label-item', ...selectedLayoutClasses);
             linkEl.dataset.labelId = label.id;
           }
 

app/assets/javascripts/repository/components/table/index.vue

@@ -137,6 +137,7 @@ export default {
               :path="entry.flatPath"
               :type="entry.type"
               :url="entry.webUrl"
+              :submodule-tree-url="entry.treeUrl"
               :lfs-oid="entry.lfsOid"
             />
           </template>

app/assets/javascripts/repository/components/table/row.vue

@@ -62,6 +62,11 @@ export default {
       required: false,
       default: null,
     },
+    submoduleTreeUrl: {
+      type: String,
+      required: false,
+      default: null,
+    },
   },
   data() {
     return {
@@ -112,7 +117,7 @@ export default {
       </component>
       <gl-badge v-if="lfsOid" variant="default" class="label-lfs ml-1">LFS</gl-badge>
       <template v-if="isSubmodule">
-        @ <gl-link href="#" class="commit-sha">{{ shortSha }}</gl-link>
+        @ <gl-link :href="submoduleTreeUrl" class="commit-sha">{{ shortSha }}</gl-link>
       </template>
     </td>
     <td class="d-none d-sm-table-cell tree-commit">

app/assets/javascripts/repository/queries/getFiles.query.graphql

@@ -35,6 +35,8 @@ query getFiles(
           edges {
             node {
               ...TreeEntry
+              webUrl
+              treeUrl
             }
           }
           pageInfo {

app/assets/stylesheets/pages/labels.scss

@@ -30,6 +30,10 @@
   .dropdown-content {
     max-height: 135px;
   }
+
+  .dropdown-label-box {
+    flex: 0 0 auto;
+  }
 }
 
 .dropdown-new-label {

app/graphql/types/tree/submodule_type.rb

@@ -7,6 +7,9 @@ module Types
       implements Types::Tree::EntryType
 
       graphql_name 'Submodule'
+
+      field :web_url, type: GraphQL::STRING_TYPE, null: true
+      field :tree_url, type: GraphQL::STRING_TYPE, null: true
     end
     # rubocop: enable Graphql/AuthorizeTypes
   end

app/graphql/types/tree/tree_type.rb

@@ -15,7 +15,9 @@ module Types
         Gitlab::Graphql::Representation::TreeEntry.decorate(obj.trees, obj.repository)
       end
 
-      field :submodules, Types::Tree::SubmoduleType.connection_type, null: false, calls_gitaly: true
+      field :submodules, Types::Tree::SubmoduleType.connection_type, null: false, calls_gitaly: true, resolve: -> (obj, args, ctx) do
+        Gitlab::Graphql::Representation::SubmoduleTreeEntry.decorate(obj.submodules, obj)
+      end
 
       field :blobs, Types::Tree::BlobType.connection_type, null: false, calls_gitaly: true, resolve: -> (obj, args, ctx) do
         Gitlab::Graphql::Representation::TreeEntry.decorate(obj.blobs, obj.repository)

app/helpers/submodule_helper.rb

@@ -9,6 +9,10 @@ module SubmoduleHelper
   def submodule_links(submodule_item, ref = nil, repository = @repository)
     url = repository.submodule_url_for(ref, submodule_item.path)
 
+    submodule_links_for_url(submodule_item.id, url, repository)
+  end
+
+  def submodule_links_for_url(submodule_item_id, url, repository)
     if url == '.' || url == './'
       url = File.join(Gitlab.config.gitlab.url, repository.project.full_path)
     end
@@ -31,13 +35,13 @@ module SubmoduleHelper
 
       if self_url?(url, namespace, project)
         [namespace_project_path(namespace, project),
-         namespace_project_tree_path(namespace, project, submodule_item.id)]
+         namespace_project_tree_path(namespace, project, submodule_item_id)]
       elsif relative_self_url?(url)
-        relative_self_links(url, submodule_item.id, repository.project)
+        relative_self_links(url, submodule_item_id, repository.project)
       elsif github_dot_com_url?(url)
-        standard_links('github.com', namespace, project, submodule_item.id)
+        standard_links('github.com', namespace, project, submodule_item_id)
       elsif gitlab_dot_com_url?(url)
-        standard_links('gitlab.com', namespace, project, submodule_item.id)
+        standard_links('gitlab.com', namespace, project, submodule_item_id)
       else
         [sanitize_submodule_url(url), nil]
       end

app/models/project_feature.rb

@@ -86,6 +86,8 @@ class ProjectFeature < ApplicationRecord
   default_value_for :wiki_access_level,           value: ENABLED, allows_nil: false
   default_value_for :repository_access_level,     value: ENABLED, allows_nil: false
 
+  default_value_for(:pages_access_level, allows_nil: false) { |feature| feature.project&.public? ? ENABLED : PRIVATE }
+
   def feature_available?(feature, user)
     # This feature might not be behind a feature flag at all, so default to true
     return false unless ::Feature.enabled?(feature, user, default_enabled: true)

app/serializers/diff_file_base_entity.rb

@@ -3,7 +3,6 @@
 class DiffFileBaseEntity < Grape::Entity
   include RequestAwareEntity
   include BlobHelper
-  include SubmoduleHelper
   include DiffHelper
   include TreeHelper
   include ChecksCollaboration
@@ -12,12 +11,12 @@ class DiffFileBaseEntity < Grape::Entity
   expose :content_sha
   expose :submodule?, as: :submodule
 
-  expose :submodule_link do |diff_file|
-    memoized_submodule_links(diff_file).first
+  expose :submodule_link do |diff_file, options|
+    memoized_submodule_links(diff_file, options).first
   end
 
   expose :submodule_tree_url do |diff_file|
-    memoized_submodule_links(diff_file).last
+    memoized_submodule_links(diff_file, options).last
   end
 
   expose :edit_path, if: -> (_, options) { options[:merge_request] } do |diff_file|
@@ -92,10 +91,10 @@ class DiffFileBaseEntity < Grape::Entity
 
   private
 
-  def memoized_submodule_links(diff_file)
+  def memoized_submodule_links(diff_file, options)
     strong_memoize(:submodule_links) do
       if diff_file.submodule?
-        submodule_links(diff_file.blob, diff_file.content_sha, diff_file.repository)
+        options[:submodule_links].for(diff_file.blob, diff_file.content_sha)
       else
         []
       end

app/serializers/diffs_entity.rb

@@ -64,7 +64,10 @@ class DiffsEntity < Grape::Entity
     merge_request_path(merge_request, format: :diff)
   end
 
-  expose :diff_files, using: DiffFileEntity
+  expose :diff_files do |diffs, options|
+    submodule_links = Gitlab::SubmoduleLinks.new(merge_request.project.repository)
+    DiffFileEntity.represent(diffs.diff_files, options.merge(submodule_links: submodule_links))
+  end
 
   expose :merge_request_diffs, using: MergeRequestDiffEntity, if: -> (_, options) { options[:merge_request_diffs]&.any? } do |diffs|
     options[:merge_request_diffs]

app/serializers/discussion_serializer.rb

@@ -2,4 +2,18 @@
 
 class DiscussionSerializer < BaseSerializer
   entity DiscussionEntity
+
+  def represent(resource, opts = {}, entity_class = nil)
+    super(resource, with_additional_opts(opts), entity_class)
+  end
+
+  private
+
+  def with_additional_opts(opts)
+    additional_opts = {
+      submodule_links: Gitlab::SubmoduleLinks.new(@request.project.repository)
+    }
+
+    opts.merge(additional_opts)
+  end
 end

app/serializers/submodule_entity.rb

-# frozen_string_literal: true
-
-class SubmoduleEntity < Grape::Entity
-  include RequestAwareEntity
-
-  expose :id, :path, :name, :mode
-
-  expose :icon do |blob|
-    'archive'
-  end
-
-  expose :url do |blob|
-    submodule_links(blob, request).first
-  end
-
-  expose :tree_url do |blob|
-    submodule_links(blob, request).last
-  end
-
-  private
-
-  def submodule_links(blob, request)
-    @submodule_links ||= SubmoduleHelper.submodule_links(blob, request.ref, request.repository)
-  end
-end

app/views/projects/pages_domains/_form.html.haml

@@ -33,7 +33,7 @@
             = sprite_icon("status_success_borderless", size: 16, css_class: "toggle-icon-svg toggle-status-checked")
             = sprite_icon("status_failed_borderless", size: 16, css_class: "toggle-icon-svg toggle-status-unchecked")
         %p.text-secondary.mt-3
-          - docs_link_url = help_page_path("user/project/pages/lets_encrypt_for_gitlab_pages.md", anchor: "lets-encrypt-for-gitlab-pages")
+          - docs_link_url = help_page_path("user/project/pages/custom_domains_ssl_tls_certification/lets_encrypt_integration.md")
           - docs_link_start = "<a href=\"%{docs_link_url}\" target=\"_blank\" rel=\"noopener noreferrer\" class=\"text-nowrap\">".html_safe % { docs_link_url: docs_link_url }
           - docs_link_end = "</a>".html_safe
           = _("Let's Encrypt is a free, automated, and open certificate authority (CA) that gives digital certificates in order to enable HTTPS (SSL/TLS) for websites. Learn more about Let's Encrypt configuration by following the %{docs_link_start}documentation on GitLab Pages%{docs_link_end}.").html_safe % { docs_link_url: docs_link_url, docs_link_start: docs_link_start, docs_link_end: docs_link_end }

changelogs/unreleased/48771-label-picker-line-break-on-long-label-titles.yml

+---
+title: 'Resolve Label picker: Line break on long label titles'
+merge_request: 30610
+author: 
+type: fixed

changelogs/unreleased/64645-asciidoctor-preserve-footnote-link-ids.yml

+---
+title: "Preserve footnote link ids in Asciidoctor"
+merge_request: 30790
+author: Guillaume Grossetie
+type: added
\ No newline at end of file

danger/metadata/Dangerfile

 # rubocop:disable Style/SignalException
 
+THROUGHPUT_LABELS = [
+  'Community contribution',
+  'security',
+  'bug',
+  'feature',
+  'backstage'
+].freeze
+
 if gitlab.mr_body.size < 5
   fail "Please provide a proper merge request description."
 end
@@ -8,6 +16,10 @@ if gitlab.mr_labels.empty?
   fail "Please add labels to this merge request."
 end
 
+if (THROUGHPUT_LABELS & gitlab.mr_labels).empty?
+  warn 'Please add a [throughput label](https://about.gitlab.com/handbook/engineering/management/throughput/#implementation) to this merge request.'
+end
+
 unless gitlab.mr_json["assignee"]
   warn "This merge request does not have any assignee yet. Setting an assignee clarifies who needs to take action on the merge request at any given time."
 end

db/post_migrate/20190703185326_fix_wrong_pages_access_level.rb

+# frozen_string_literal: true
+
+class FixWrongPagesAccessLevel < ActiveRecord::Migration[5.1]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  MIGRATION = 'FixPagesAccessLevel'
+  BATCH_SIZE = 20_000
+  BATCH_TIME = 2.minutes
+
+  disable_ddl_transaction!
+
+  class ProjectFeature < ActiveRecord::Base
+    include ::EachBatch
+
+    self.table_name = 'project_features'
+    self.inheritance_column = :_type_disabled
+  end
+
+  def up
+    queue_background_migration_jobs_by_range_at_intervals(
+      ProjectFeature,
+      MIGRATION,
+      BATCH_TIME,
+      batch_size: BATCH_SIZE)
+  end
+end

db/post_migrate/20190715114644_drop_project_features_pages_access_level_default.rb

+# frozen_string_literal: true
+
+class DropProjectFeaturesPagesAccessLevelDefault < ActiveRecord::Migration[5.1]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  ENABLED_VALUE = 20
+
+  def change
+    change_column_default :project_features, :pages_access_level, from: ENABLED_VALUE, to: nil
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2019_07_03_130053) do
+ActiveRecord::Schema.define(version: 2019_07_15_114644) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_trgm"
@@ -2507,7 +2507,7 @@ ActiveRecord::Schema.define(version: 2019_07_03_130053) do
     t.datetime "created_at"
     t.datetime "updated_at"
     t.integer "repository_access_level", default: 20, null: false
-    t.integer "pages_access_level", default: 20, null: false
+    t.integer "pages_access_level", null: false
     t.index ["project_id"], name: "index_project_features_on_project_id", unique: true, using: :btree
   end
 

doc/administration/pages/index.md

@@ -265,6 +265,23 @@ verification requirement. Navigate to `Admin area ➔ Settings` and uncheck
 **Require users to prove ownership of custom domains** in the Pages section.
 This setting is enabled by default.
 
+### Let's Encrypt integration
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-ce/issues/28996) in GitLab 12.1.
+
+[GitLab Pages' Let's Encrypt integration](../../user/project/pages/custom_domains_ssl_tls_certification/lets_encrypt_integration.md)
+allows users to add Let's Encrypt SSL certificates for GitLab Pages
+sites served under a custom domain.
+
+To enable it, you'll need to:
+
+1. Choose an email on which you will recieve notifications about expiring domains.
+1. Navigate to your instance's **Admin Area > Settings > Preferences** and expand **Pages** settings.
+1. Enter the email for receiving notifications and accept Let's Encrypt's Terms of Service as shown below.
+1. Click **Save changes**.
+
+![Let's Encrypt settings](img/lets_encrypt_integration_v12_1.png)
+
 ### Access control
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab-ce/issues/33422) in GitLab 11.5.

doc/user/project/pages/custom_domains_ssl_tls_certification/index.md

@@ -204,6 +204,14 @@ can use the following setup:
 
 Read this document for an [overview on SSL/TLS certification](ssl_tls_concepts.md).
 
+To secure your custom domain with GitLab Pages you can opt by:
+
+- Using the [Let's Encrypt integration with GitLab Pages](lets_encrypt_integration.md),
+  which automatically obtains and renews SSL certificates
+  for your Pages domains.
+- Manually adding SSL/TLS certificates to GitLab Pages websites
+  by following the steps below.
+
 ### Requirements
 
 - A GitLab Pages website up and running accessible via a custom domain.
@@ -255,6 +263,7 @@ To enable this setting:
 1. Navigate to your project's **Settings > Pages**.
 1. Tick the checkbox **Force HTTPS (requires valid certificates)**.
 
+
 <!-- ## Troubleshooting
 
 Include any troubleshooting steps that you can foresee. If you know beforehand what issues
@@ -265,4 +274,4 @@ questions that you know someone might ask.
 
 Each scenario can be a third-level heading, e.g. `### Getting error message X`.
 If you have none to add when creating a doc, leave this section in place
-but commented out to help encourage others to add to it in the future. -->
\ No newline at end of file
+but commented out to help encourage others to add to it in the future. -->

doc/user/project/pages/custom_domains_ssl_tls_certification/lets_encrypt_integration.md

+---
+type: reference
+description: "Automatic Let's Encrypt SSL certificates for GitLab Pages."
+---
+
+# GitLab Pages integration with Let's Encrypt
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-ce/issues/28996) in GitLab 12.1.
+
+The GitLab Pages integration with Let's Encrypt (LE) allows you
+to use LE certificates for your Pages website with custom domains
+without the hassle of having to issue and update them yourself;
+GitLab does it for you, out-of-the-box.
+
+[Let's Encrypt](https://letsencrypt.org) is a free, automated, and
+open source Certificate Authority.
+
+## Requirements
+
+Before you can enable automatic provisioning of a SSL certificate for your domain, make sure you have:
+
+- Created a [project](../getting_started_part_two.md) in GitLab
+  containing your website's source code.
+- Acquired a domain (`example.com`) and added a [DNS entry](index.md)
+  pointing it to your Pages website.
+- [Added your domain to your Pages project](index.md#1-add-a-custom-domain-to-pages)
+  and verified your ownership.
+- Have your website up and running, accessible through your custom domain.
+
+NOTE: **Note:**
+GitLab's Let's Encrypt integration is enabled and available on GitLab.com.
+For **self-managed** GitLab instances, make sure your administrator has
+[enabled it](../../../../administration/pages/index.md#lets-encrypt-integration).
+
+## Enabling Let's Encrypt integration for your custom domain
+
+Once you've met the requirements, to enable Let's Encrypt integration:
+
+1. Navigate to your project's **Settings > Pages**.
+1. Find your domain and click **Details**.
+1. Click **Edit** in the top-right corner.
+1. Enable Let's Encrypt integration by switching **Automatic certificate management using Let's Encrypt**:
+
+    ![Enable Let's Encrypt](img/lets_encrypt_integration_v12_1.png)
+
+1. Click **Save changes**.
+
+Once enabled, GitLab will obtain a LE certificate and add it to the
+associated Pages domain. It will be also renewed automatically by GitLab.
+
+> **Notes:**
+>
+> - Issuing the certificate and updating Pages configuration
+>   **can take up to an hour**.
+> - If you already have SSL certificate in domain settings it
+>   will continue to work until it will be replaced by Let's Encrypt's certificate.
+
+<!-- ## Troubleshooting
+
+Include any troubleshooting steps that you can foresee. If you know beforehand what issues
+one might have when setting this up, or when something is changed, or on upgrading, it's
+important to describe those, too. Think of things that may go wrong and include them here.
+This is important to minimize requests for support, and to avoid doc comments with
+questions that you know someone might ask.
+
+Each scenario can be a third-level heading, e.g. `### Getting error message X`.
+If you have none to add when creating a doc, leave this section in place
+but commented out to help encourage others to add to it in the future. -->

doc/user/project/pages/index.md

@@ -143,8 +143,8 @@ To learn more about configuration options for GitLab Pages, read the following:
 | [Exploring GitLab Pages](introduction.md) | Requirements, technical aspects, specific GitLab CI's configuration options, Access Control, custom 404 pages, limitations, FAQ. |
 |---+---|
 | [Custom domains and SSL/TLS Certificates](custom_domains_ssl_tls_certification/index.md) | How to add custom domains and subdomains to your website, configure DNS records and SSL/TLS certificates. |
+| [Let's Encrypt integration](custom_domains_ssl_tls_certification/lets_encrypt_integration.md) | Secure your Pages sites with Let's Encrypt certificates automatically obtained and renewed by GitLab. |
 | [CloudFlare certificates](https://about.gitlab.com/2017/02/07/setting-up-gitlab-pages-with-cloudflare-certificates/) | Secure your Pages site with CloudFlare certificates. |
-| [Let's Encrypt certificates](lets_encrypt_for_gitlab_pages.md) | Secure your Pages site with Let's Encrypt certificates. |
 |---+---|
 | [Static vs dynamic websites](https://about.gitlab.com/2016/06/03/ssg-overview-gitlab-pages-part-1-dynamic-x-static/) | A conceptual overview on static versus dynamic sites. |
 | [Modern static site generators](https://about.gitlab.com/2016/06/10/ssg-overview-gitlab-pages-part-2/) | A conceptual overview on SSGs. |

doc/user/project/pages/lets_encrypt_for_gitlab_pages.md

 ---
-description: "How to secure GitLab Pages websites with Let's Encrypt."
+description: "How to secure GitLab Pages websites with Let's Encrypt (manual process, deprecated)."
 type: howto
-last_updated: 2019-06-04
+last_updated: 2019-07-15
 ---
 
-# Let's Encrypt for GitLab Pages
+# Let's Encrypt for GitLab Pages (manual process, deprecated)
+
+CAUTION: **Warning:**
+This method is still valid but was **deprecated** in favor of the
+[Let's Encrypt integration](custom_domains_ssl_tls_certification/lets_encrypt_integration.md)
+introduced in GitLab 12.1.
 
 If you have a GitLab Pages website served under your own domain,
 you might want to secure it with a SSL/TSL certificate.

lib/banzai/filter/ascii_doc_sanitization_filter.rb

@@ -8,12 +8,18 @@ module Banzai
     class AsciiDocSanitizationFilter < Banzai::Filter::BaseSanitizationFilter
       # Section anchor link pattern
       SECTION_LINK_REF_PATTERN = /\A#{Gitlab::Asciidoc::DEFAULT_ADOC_ATTRS['idprefix']}(:?[[:alnum:]]|-|_)+\z/.freeze
+      SECTION_HEADINGS = %w(h2 h3 h4 h5 h6).freeze
+
+      # Footnote link patterns
+      FOOTNOTE_LINK_ID_PATTERNS = {
+        a: /\A_footnoteref_\d+\z/,
+        div: /\A_footnotedef_\d+\z/
+      }.freeze
 
       # Classes used by Asciidoctor to style components
       ADMONITION_CLASSES = %w(fa icon-note icon-tip icon-warning icon-caution icon-important).freeze
       CALLOUT_CLASSES = ['conum'].freeze
       CHECKLIST_CLASSES = %w(fa fa-check-square-o fa-square-o).freeze
-
       LIST_CLASSES = %w(checklist none no-bullet unnumbered unstyled).freeze
 
       ELEMENT_CLASSES_WHITELIST = {
@@ -26,8 +32,6 @@ module Banzai
         a: ['anchor'].freeze
       }.freeze
 
-      ALLOWED_HEADERS = %w(h2 h3 h4 h5 h6).freeze
-
       def customize_whitelist(whitelist)
         # Allow marks
         whitelist[:elements].push('mark')
@@ -44,20 +48,39 @@ module Banzai
         whitelist[:transformers].push(self.class.remove_element_classes)
 
         # Allow `id` in heading elements for section anchors
-        ALLOWED_HEADERS.each do |header|
+        SECTION_HEADINGS.each do |header|
           whitelist[:attributes][header] = %w(id)
         end
         whitelist[:transformers].push(self.class.remove_non_heading_ids)
 
+        # Allow `id` in footnote elements
+        FOOTNOTE_LINK_ID_PATTERNS.keys.each do |element|
+          whitelist[:attributes][element.to_s].push('id')
+        end
+        whitelist[:transformers].push(self.class.remove_non_footnote_ids)
+
         whitelist
       end
 
       class << self
+        def remove_non_footnote_ids
+          lambda do |env|
+            node = env[:node]
+
+            return unless (pattern = FOOTNOTE_LINK_ID_PATTERNS[node.name.to_sym])
+            return unless node.has_attribute?('id')
+
+            return if node['id'] =~ pattern
+
+            node.remove_attribute('id')
+          end
+        end
+
         def remove_non_heading_ids
           lambda do |env|
             node = env[:node]
 
-            return unless ALLOWED_HEADERS.any?(node.name)
+            return unless SECTION_HEADINGS.any?(node.name)
             return unless node.has_attribute?('id')
 
             return if node['id'] =~ SECTION_LINK_REF_PATTERN

lib/gitlab/background_migration/fix_pages_access_level.rb

+# frozen_string_literal: true
+
+module Gitlab
+  module BackgroundMigration
+    # corrects stored pages access level on db depending on project visibility
+    class FixPagesAccessLevel
+      # Copy routable here to avoid relying on application logic
+      module Routable
+        def build_full_path
+          if parent && path
+            parent.build_full_path + '/' + path
+          else
+            path
+          end
+        end
+      end
+
+      # Namespace
+      class Namespace < ApplicationRecord
+        self.table_name = 'namespaces'
+        self.inheritance_column = :_type_disabled
+
+        include Routable
+
+        belongs_to :parent, class_name: "Namespace"
+      end
+
+      # Project
+      class Project < ActiveRecord::Base
+        self.table_name = 'projects'
+        self.inheritance_column = :_type_disabled
+
+        include Routable
+
+        belongs_to :namespace
+        alias_method :parent, :namespace
+        alias_attribute :parent_id, :namespace_id
+
+        PRIVATE = 0
+        INTERNAL = 10
+        PUBLIC = 20
+
+        def pages_deployed?
+          Dir.exist?(public_pages_path)
+        end
+
+        def public_pages_path
+          File.join(pages_path, 'public')
+        end
+
+        def pages_path
+          # TODO: when we migrate Pages to work with new storage types, change here to use disk_path
+          File.join(Settings.pages.path, build_full_path)
+        end
+      end
+
+      # ProjectFeature
+      class ProjectFeature < ActiveRecord::Base
+        include ::EachBatch
+
+        self.table_name = 'project_features'
+
+        belongs_to :project
+
+        PRIVATE = 10
+        ENABLED = 20
+        PUBLIC  = 30
+      end
+
+      def perform(start_id, stop_id)
+        fix_public_access_level(start_id, stop_id)
+
+        make_internal_projects_public(start_id, stop_id)
+
+        fix_private_access_level(start_id, stop_id)
+      end
+
+      private
+
+      def access_control_is_enabled
+        @access_control_is_enabled = Gitlab.config.pages.access_control
+      end
+
+      # Public projects are allowed to have only enabled pages_access_level
+      # which is equivalent to public
+      def fix_public_access_level(start_id, stop_id)
+        project_features(start_id, stop_id, ProjectFeature::PUBLIC, Project::PUBLIC).each_batch do |features|
+          features.update_all(pages_access_level: ProjectFeature::ENABLED)
+        end
+      end
+
+      # If access control is disabled and project has pages deployed
+      # project will become unavailable when access control will become enabled
+      # we make these projects public to avoid negative surprise to user
+      def make_internal_projects_public(start_id, stop_id)
+        return if access_control_is_enabled
+
+        project_features(start_id, stop_id, ProjectFeature::ENABLED, Project::INTERNAL).find_each do |project_feature|
+          next unless project_feature.project.pages_deployed?
+
+          project_feature.update(pages_access_level: ProjectFeature::PUBLIC)
+        end
+      end
+
+      # Private projects are not allowed to have enabled access level, only `private` and `public`
+      # If access control is enabled, these projects currently behave as if the have `private` pages_access_level
+      # if access control is disabled, these projects currently behave as if the have `public` pages_access_level
+      # so we preserve this behaviour for projects with pages already deployed
+      # for project without pages we always set `private` access_level
+      def fix_private_access_level(start_id, stop_id)
+        project_features(start_id, stop_id, ProjectFeature::ENABLED, Project::PRIVATE).find_each do |project_feature|
+          if access_control_is_enabled
+            project_feature.update!(pages_access_level: ProjectFeature::PRIVATE)
+          else
+            fixed_access_level = project_feature.project.pages_deployed? ? ProjectFeature::PUBLIC : ProjectFeature::PRIVATE
+            project_feature.update!(pages_access_level: fixed_access_level)
+          end
+        end
+      end
+
+      def project_features(start_id, stop_id, pages_access_level, project_visibility_level)
+        ProjectFeature.where(id: start_id..stop_id).joins(:project)
+          .where(pages_access_level: pages_access_level)
+          .where(projects: { visibility_level: project_visibility_level })
+      end
+    end
+  end
+end

lib/gitlab/git/repository.rb

@@ -464,6 +464,18 @@ module Gitlab
         end
       end
 
+      # Returns path to url mappings for submodules
+      #
+      # Ex.
+      #   @repository.submodule_urls_for('master')
+      #   # => { 'rack' => 'git@localhost:rack.git' }
+      #
+      def submodule_urls_for(ref)
+        wrapped_gitaly_errors do
+          gitaly_submodule_urls_for(ref)
+        end
+      end
+
       # Return total commits count accessible from passed ref
       def commit_count(ref)
         wrapped_gitaly_errors do
@@ -1059,12 +1071,16 @@ module Gitlab
 
         return unless commit_object && commit_object.type == :COMMIT
 
+        urls = gitaly_submodule_urls_for(ref)
+        urls && urls[path]
+      end
+
+      def gitaly_submodule_urls_for(ref)
         gitmodules = gitaly_commit_client.tree_entry(ref, '.gitmodules', Gitlab::Git::Blob::MAX_DATA_DISPLAY_SIZE)
         return unless gitmodules
 
-        found_module = GitmodulesParser.new(gitmodules.data).parse[path]
-
-        found_module && found_module['url']
+        submodules = GitmodulesParser.new(gitmodules.data).parse
+        submodules.transform_values { |submodule| submodule['url'] }
       end
 
       # Returns true if the given ref name exists

lib/gitlab/graphql/representation/submodule_tree_entry.rb

+# frozen_string_literal: true
+
+module Gitlab
+  module Graphql
+    module Representation
+      class SubmoduleTreeEntry < SimpleDelegator
+        class << self
+          def decorate(submodules, tree)
+            repository = tree.repository
+            submodule_links = Gitlab::SubmoduleLinks.new(repository)
+
+            submodules.map do |submodule|
+              self.new(submodule, submodule_links.for(submodule, tree.sha))
+            end
+          end
+        end
+
+        def initialize(submodule, submodule_links)
+          @submodule_links = submodule_links
+
+          super(submodule)
+        end
+
+        def web_url
+          @submodule_links.first
+        end
+
+        def tree_url
+          @submodule_links.last
+        end
+      end
+    end
+  end
+end

lib/gitlab/submodule_links.rb

+# frozen_string_literal: true
+
+module Gitlab
+  class SubmoduleLinks
+    include Gitlab::Utils::StrongMemoize
+
+    def initialize(repository)
+      @repository = repository
+    end
+
+    def for(submodule, sha)
+      submodule_url = submodule_url_for(sha)[submodule.path]
+      SubmoduleHelper.submodule_links_for_url(submodule.id, submodule_url, repository)
+    end
+
+    private
+
+    attr_reader :repository
+
+    def submodule_url_for(sha)
+      strong_memoize(:"submodule_links_for_#{sha}") do
+        repository.submodule_urls_for(sha)
+      end
+    end
+  end
+end

spec/features/issues/bulk_assignment_labels_spec.rb

@@ -381,7 +381,7 @@ describe 'Issues > Labels bulk assignment' do
       if unmark
         items.map do |item|
           # Make sure we are unmarking the item no matter the state it has currently
-          click_link item until find('a', text: item)[:class] == 'label-item'
+          click_link item until find('a', text: item)[:class].include? 'label-item'
         end
       end
     end

spec/frontend/repository/components/table/row_spec.js

 import { shallowMount, RouterLinkStub } from '@vue/test-utils';
-import { GlBadge } from '@gitlab/ui';
+import { GlBadge, GlLink } from '@gitlab/ui';
 import { visitUrl } from '~/lib/utils/url_utility';
 import TableRow from '~/repository/components/table/row.vue';
 
@@ -142,4 +142,18 @@ describe('Repository table row component', () => {
 
     expect(vm.find(GlBadge).exists()).toBe(true);
   });
+
+  it('renders commit and web links with href for submodule', () => {
+    factory({
+      id: '1',
+      path: 'test',
+      type: 'commit',
+      url: 'https://test.com',
+      submoduleTreeUrl: 'https://test.com/commit',
+      currentPath: '/',
+    });
+
+    expect(vm.find('a').attributes('href')).toEqual('https://test.com');
+    expect(vm.find(GlLink).attributes('href')).toEqual('https://test.com/commit');
+  });
 });

spec/graphql/types/tree/submodule_type_spec.rb

@@ -5,5 +5,5 @@ require 'spec_helper'
 describe Types::Tree::SubmoduleType do
   it { expect(described_class.graphql_name).to eq('Submodule') }
 
-  it { expect(described_class).to have_graphql_fields(:id, :name, :type, :path, :flat_path) }
+  it { expect(described_class).to have_graphql_fields(:id, :name, :type, :path, :flat_path, :web_url, :tree_url) }
 end

spec/lib/gitlab/asciidoc_spec.rb

@@ -110,6 +110,56 @@ module Gitlab
 
           expect(render(input, context)).to include(output.strip)
         end
+
+        it 'removes non footnote def ids' do
+          input = <<~ADOC
+            ++++
+            <div id="def">Footnote definition</div>
+            ++++
+          ADOC
+
+          output = <<~HTML
+            <div>Footnote definition</div>
+          HTML
+
+          expect(render(input, context)).to include(output.strip)
+        end
+
+        it 'removes non footnote ref ids' do
+          input = <<~ADOC
+            ++++
+            <a id="ref">Footnote reference</a>
+            ++++
+          ADOC
+
+          output = <<~HTML
+            <a>Footnote reference</a>
+          HTML
+
+          expect(render(input, context)).to include(output.strip)
+        end
+      end
+
+      context 'with footnotes' do
+        it 'preserves ids and links' do
+          input = <<~ADOC
+            This paragraph has a footnote.footnote:[This is the text of the footnote.]
+          ADOC
+
+          output = <<~HTML
+           <div>
+           <p>This paragraph has a footnote.<sup>[<a id="_footnoteref_1" href="#_footnotedef_1" title="View footnote.">1</a>]</sup></p>
+           </div>
+           <div>
+           <hr>
+           <div id="_footnotedef_1">
+           <a href="#_footnoteref_1">1</a>. This is the text of the footnote.
+           </div>
+           </div>
+          HTML
+
+          expect(render(input, context)).to include(output.strip)
+        end
       end
 
       context 'with section anchors' do

spec/lib/gitlab/git/repository_spec.rb

@@ -256,6 +256,22 @@ describe Gitlab::Git::Repository, :seed_helper do
     end
   end
 
+  describe '#submodule_urls_for' do
+    let(:ref) { 'master' }
+
+    it 'returns url mappings for submodules' do
+      urls = repository.submodule_urls_for(ref)
+
+      expect(urls).to eq({
+        "deeper/nested/six" => "git://github.com/randx/six.git",
+               "gitlab-grack" => "https://gitlab.com/gitlab-org/gitlab-grack.git",
+       "gitlab-shell" => "https://github.com/gitlabhq/gitlab-shell.git",
+        "nested/six" => "git://github.com/randx/six.git",
+        "six" => "git://github.com/randx/six.git"
+      })
+    end
+  end
+
   describe '#commit_count' do
     it { expect(repository.commit_count("master")).to eq(25) }
     it { expect(repository.commit_count("feature")).to eq(9) }

spec/lib/gitlab/graphql/representation/submodule_tree_entry_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::Graphql::Representation::SubmoduleTreeEntry do
+  let(:project) { create(:project, :repository) }
+  let(:repository) { project.repository }
+
+  describe '.decorate' do
+    let(:submodules) { repository.tree.submodules }
+
+    it 'returns array of SubmoduleTreeEntry' do
+      entries = described_class.decorate(submodules, repository.tree)
+
+      expect(entries.first).to be_a(described_class)
+
+      expect(entries.map(&:web_url)).to contain_exactly(
+        "https://gitlab.com/gitlab-org/gitlab-grack",
+        "https://github.com/gitlabhq/gitlab-shell",
+        "https://github.com/randx/six"
+      )
+
+      expect(entries.map(&:tree_url)).to contain_exactly(
+        "https://gitlab.com/gitlab-org/gitlab-grack/tree/645f6c4c82fd3f5e06f67134450a570b795e55a6",
+        "https://github.com/gitlabhq/gitlab-shell/tree/79bceae69cb5750d6567b223597999bfa91cb3b9",
+        "https://github.com/randx/six/tree/409f37c4f05865e4fb208c771485f211a22c4c2d"
+      )
+    end
+  end
+end

spec/migrations/fix_wrong_pages_access_level_spec.rb

+require 'spec_helper'
+require Rails.root.join('db', 'post_migrate', '20190703185326_fix_wrong_pages_access_level.rb')
+
+describe FixWrongPagesAccessLevel, :migration, :sidekiq, schema: 20190628185004 do
+  using RSpec::Parameterized::TableSyntax
+
+  let(:migration_class) { described_class::MIGRATION }
+  let(:migration_name)  { migration_class.to_s.demodulize }
+
+  project_class = ::Gitlab::BackgroundMigration::FixPagesAccessLevel::Project
+  feature_class = ::Gitlab::BackgroundMigration::FixPagesAccessLevel::ProjectFeature
+
+  let(:namespaces_table) { table(:namespaces) }
+  let(:projects_table) { table(:projects) }
+  let(:features_table) { table(:project_features) }
+
+  let(:subgroup) do
+    root_group = namespaces_table.create(path: "group", name: "group")
+    namespaces_table.create!(path: "subgroup", name: "group", parent_id: root_group.id)
+  end
+
+  def create_project_feature(path, project_visibility, pages_access_level)
+    project = projects_table.create!(path: path, visibility_level: project_visibility,
+                                     namespace_id: subgroup.id)
+    features_table.create!(project_id: project.id, pages_access_level: pages_access_level)
+  end
+
+  it 'correctly schedules background migrations' do
+    Sidekiq::Testing.fake! do
+      Timecop.freeze do
+        first_id = create_project_feature("project1", project_class::PRIVATE, feature_class::PRIVATE).id
+        last_id = create_project_feature("project2", project_class::PRIVATE, feature_class::PUBLIC).id
+
+        migrate!
+
+        expect(migration_name).to be_scheduled_delayed_migration(2.minutes, first_id, last_id)
+        expect(BackgroundMigrationWorker.jobs.size).to eq(1)
+      end
+    end
+  end
+
+  def expect_migration
+    expect do
+      perform_enqueued_jobs do
+        migrate!
+      end
+    end
+  end
+
+  where(:project_visibility, :pages_access_level, :access_control_is_enabled,
+        :pages_deployed, :resulting_pages_access_level) do
+    # update settings for public projects regardless of access_control being enabled
+    project_class::PUBLIC | feature_class::PUBLIC | true | true  | feature_class::ENABLED
+    project_class::PUBLIC | feature_class::PUBLIC | false | true | feature_class::ENABLED
+    # don't update public level for private and internal projects
+    project_class::PRIVATE | feature_class::PUBLIC  | true | true | feature_class::PUBLIC
+    project_class::INTERNAL | feature_class::PUBLIC | true | true | feature_class::PUBLIC
+
+    # if access control is disabled but pages are deployed we make them public
+    project_class::INTERNAL | feature_class::ENABLED | false | true  | feature_class::PUBLIC
+    # don't change anything if one of the conditions is not satisfied
+    project_class::INTERNAL | feature_class::ENABLED | true  | true  | feature_class::ENABLED
+    project_class::INTERNAL | feature_class::ENABLED | true  | false | feature_class::ENABLED
+
+    # private projects
+    # if access control is enabled update pages_access_level to private regardless of deployment
+    project_class::PRIVATE | feature_class::ENABLED | true  | true  | feature_class::PRIVATE
+    project_class::PRIVATE | feature_class::ENABLED | true  | false | feature_class::PRIVATE
+    # if access control is disabled and pages are deployed update pages_access_level to public
+    project_class::PRIVATE | feature_class::ENABLED | false | true  | feature_class::PUBLIC
+    # if access control is disabled but pages aren't deployed update pages_access_level to private
+    project_class::PRIVATE | feature_class::ENABLED | false | false | feature_class::PRIVATE
+  end
+
+  with_them do
+    let!(:project_feature) do
+      create_project_feature("projectpath", project_visibility, pages_access_level)
+    end
+
+    before do
+      tested_path = File.join(Settings.pages.path, "group/subgroup/projectpath", "public")
+      allow(Dir).to receive(:exist?).with(tested_path).and_return(pages_deployed)
+
+      stub_pages_setting(access_control: access_control_is_enabled)
+    end
+
+    it "sets proper pages_access_level" do
+      expect(project_feature.reload.pages_access_level).to eq(pages_access_level)
+
+      perform_enqueued_jobs do
+        migrate!
+      end
+
+      expect(project_feature.reload.pages_access_level).to eq(resulting_pages_access_level)
+    end
+  end
+end

spec/models/project_feature_spec.rb

@@ -150,4 +150,32 @@ describe ProjectFeature do
       end
     end
   end
+
+  describe 'default pages access level' do
+    subject { project.project_feature.pages_access_level }
+
+    before do
+      # project factory overrides all values in project_feature after creation
+      project.project_feature.destroy!
+      project.build_project_feature.save!
+    end
+
+    context 'when new project is private' do
+      let(:project) { create(:project, :private) }
+
+      it { is_expected.to eq(ProjectFeature::PRIVATE) }
+    end
+
+    context 'when new project is internal' do
+      let(:project) { create(:project, :internal) }
+
+      it { is_expected.to eq(ProjectFeature::PRIVATE) }
+    end
+
+    context 'when new project is public' do
+      let(:project) { create(:project, :public) }
+
+      it { is_expected.to eq(ProjectFeature::ENABLED) }
+    end
+  end
 end

spec/serializers/diff_file_base_entity_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe DiffFileBaseEntity do
+  let(:project) { create(:project, :repository) }
+  let(:repository) { project.repository }
+
+  context 'diff for a changed submodule' do
+    let(:commit_sha_with_changed_submodule) do
+      "cfe32cf61b73a0d5e9f13e774abde7ff789b1660"
+    end
+    let(:commit) { project.commit(commit_sha_with_changed_submodule) }
+    let(:diff_file) { commit.diffs.diff_files.to_a.last }
+    let(:options) { { request: {}, submodule_links: Gitlab::SubmoduleLinks.new(repository) } }
+    let(:entity) { described_class.new(diff_file, options).as_json }
+
+    it do
+      expect(entity[:submodule]).to eq(true)
+      expect(entity[:submodule_link]).to eq("https://github.com/randx/six")
+      expect(entity[:submodule_tree_url]).to eq(
+        "https://github.com/randx/six/tree/409f37c4f05865e4fb208c771485f211a22c4c2d"
+      )
+    end
+  end
+end

spec/support/helpers/stub_configuration.rb

@@ -65,6 +65,10 @@ module StubConfiguration
     allow(Gitlab.config.artifacts).to receive_messages(to_settings(messages))
   end
 
+  def stub_pages_setting(messages)
+    allow(Gitlab.config.pages).to receive_messages(to_settings(messages))
+  end
+
   def stub_storage_settings(messages)
     messages.deep_stringify_keys!