Merge remote-tracking branch 'origin/master' into 35616-move-k8-to-cluster-page

app/assets/javascripts/boards/models/issue.js

@@ -20,6 +20,7 @@ class ListIssue {
     this.isFetching = {
       subscriptions: true,
     };
+    this.isLoading = {};
     this.sidebarInfoEndpoint = obj.issue_sidebar_endpoint;
     this.toggleSubscriptionEndpoint = obj.toggle_subscription_endpoint;
 
@@ -86,6 +87,10 @@ class ListIssue {
     this.isFetching[key] = value;
   }
 
+  setLoadingState(key, value) {
+    this.isLoading[key] = value;
+  }
+
   update (url) {
     const data = {
       issue: {

app/assets/javascripts/gl_dropdown.js

@@ -514,10 +514,11 @@ GitLabDropdown = (function() {
 
     const dropdownToggle = this.dropdown.find('.dropdown-menu-toggle');
     const hasFilterBulkUpdate = dropdownToggle.hasClass('js-filter-bulk-update');
+    const shouldRefreshOnOpen = dropdownToggle.hasClass('js-gl-dropdown-refresh-on-open');
     const hasMultiSelect = dropdownToggle.hasClass('js-multiselect');
 
     // Makes indeterminate items effective
-    if (this.fullData && hasFilterBulkUpdate) {
+    if (this.fullData && (shouldRefreshOnOpen || hasFilterBulkUpdate)) {
       this.parseData(this.fullData);
     }
 

app/assets/javascripts/right_sidebar.js

@@ -15,7 +15,7 @@ import Cookies from 'js-cookie';
 
     Sidebar.prototype.removeListeners = function () {
       this.sidebar.off('click', '.sidebar-collapsed-icon');
-      $('.dropdown').off('hidden.gl.dropdown');
+      this.sidebar.off('hidden.gl.dropdown');
       $('.dropdown').off('loading.gl.dropdown');
       $('.dropdown').off('loaded.gl.dropdown');
       $(document).off('click', '.js-sidebar-toggle');
@@ -25,7 +25,7 @@ import Cookies from 'js-cookie';
       const $document = $(document);
 
       this.sidebar.on('click', '.sidebar-collapsed-icon', this, this.sidebarCollapseClicked);
-      $('.dropdown').on('hidden.gl.dropdown', this, this.onSidebarDropdownHidden);
+      this.sidebar.on('hidden.gl.dropdown', this, this.onSidebarDropdownHidden);
       $('.dropdown').on('loading.gl.dropdown', this.sidebarDropdownLoading);
       $('.dropdown').on('loaded.gl.dropdown', this.sidebarDropdownLoaded);
 
@@ -180,7 +180,7 @@ import Cookies from 'js-cookie';
       var $block, sidebar;
       sidebar = e.data;
       e.preventDefault();
-      $block = $(this).closest('.block');
+      $block = $(e.target).closest('.block');
       return sidebar.sidebarDropdownHidden($block);
     };
 

app/assets/javascripts/sidebar/mount_sidebar.js

+import Vue from 'vue';
+import SidebarTimeTracking from './components/time_tracking/sidebar_time_tracking';
+import SidebarAssignees from './components/assignees/sidebar_assignees';
+import ConfidentialIssueSidebar from './components/confidential/confidential_issue_sidebar.vue';
+import SidebarMoveIssue from './lib/sidebar_move_issue';
+import LockIssueSidebar from './components/lock/lock_issue_sidebar.vue';
+import sidebarParticipants from './components/participants/sidebar_participants.vue';
+import sidebarSubscriptions from './components/subscriptions/sidebar_subscriptions.vue';
+import Translate from '../vue_shared/translate';
+
+Vue.use(Translate);
+
+function mountConfidentialComponent(mediator) {
+  const el = document.getElementById('js-confidential-entry-point');
+
+  if (!el) return;
+
+  const dataNode = document.getElementById('js-confidential-issue-data');
+  const initialData = JSON.parse(dataNode.innerHTML);
+
+  const ConfidentialComp = Vue.extend(ConfidentialIssueSidebar);
+
+  new ConfidentialComp({
+    propsData: {
+      isConfidential: initialData.is_confidential,
+      isEditable: initialData.is_editable,
+      service: mediator.service,
+    },
+  }).$mount(el);
+}
+
+function mountLockComponent(mediator) {
+  const el = document.getElementById('js-lock-entry-point');
+
+  if (!el) return;
+
+  const dataNode = document.getElementById('js-lock-issue-data');
+  const initialData = JSON.parse(dataNode.innerHTML);
+
+  const LockComp = Vue.extend(LockIssueSidebar);
+
+  new LockComp({
+    propsData: {
+      isLocked: initialData.is_locked,
+      isEditable: initialData.is_editable,
+      mediator,
+      issuableType: gl.utils.isInIssuePage() ? 'issue' : 'merge_request',
+    },
+  }).$mount(el);
+}
+
+function mountParticipantsComponent() {
+  const el = document.querySelector('.js-sidebar-participants-entry-point');
+
+  if (!el) return;
+
+  // eslint-disable-next-line no-new
+  new Vue({
+    el,
+    components: {
+      sidebarParticipants,
+    },
+    render: createElement => createElement('sidebar-participants', {}),
+  });
+}
+
+function mountSubscriptionsComponent() {
+  const el = document.querySelector('.js-sidebar-subscriptions-entry-point');
+
+  if (!el) return;
+
+  // eslint-disable-next-line no-new
+  new Vue({
+    el,
+    components: {
+      sidebarSubscriptions,
+    },
+    render: createElement => createElement('sidebar-subscriptions', {}),
+  });
+}
+
+function mount(mediator) {
+  const sidebarAssigneesEl = document.getElementById('js-vue-sidebar-assignees');
+  // Only create the sidebarAssignees vue app if it is found in the DOM
+  // We currently do not use sidebarAssignees for the MR page
+  if (sidebarAssigneesEl) {
+    new Vue(SidebarAssignees).$mount(sidebarAssigneesEl);
+  }
+
+  mountConfidentialComponent(mediator);
+  mountLockComponent(mediator);
+  mountParticipantsComponent();
+  mountSubscriptionsComponent();
+
+  new SidebarMoveIssue(
+    mediator,
+    $('.js-move-issue'),
+    $('.js-move-issue-confirmation-button'),
+  ).init();
+
+  new Vue(SidebarTimeTracking).$mount('#issuable-time-tracker');
+}
+
+export default mount;

app/assets/javascripts/sidebar/sidebar_bundle.js

-import Vue from 'vue';
-import SidebarTimeTracking from './components/time_tracking/sidebar_time_tracking';
-import SidebarAssignees from './components/assignees/sidebar_assignees';
-import ConfidentialIssueSidebar from './components/confidential/confidential_issue_sidebar.vue';
-import SidebarMoveIssue from './lib/sidebar_move_issue';
-import LockIssueSidebar from './components/lock/lock_issue_sidebar.vue';
-import sidebarParticipants from './components/participants/sidebar_participants.vue';
-import sidebarSubscriptions from './components/subscriptions/sidebar_subscriptions.vue';
-import Translate from '../vue_shared/translate';
-
 import Mediator from './sidebar_mediator';
-
-Vue.use(Translate);
-
-function mountConfidentialComponent(mediator) {
-  const el = document.getElementById('js-confidential-entry-point');
-
-  if (!el) return;
-
-  const dataNode = document.getElementById('js-confidential-issue-data');
-  const initialData = JSON.parse(dataNode.innerHTML);
-
-  const ConfidentialComp = Vue.extend(ConfidentialIssueSidebar);
-
-  new ConfidentialComp({
-    propsData: {
-      isConfidential: initialData.is_confidential,
-      isEditable: initialData.is_editable,
-      service: mediator.service,
-    },
-  }).$mount(el);
-}
-
-function mountLockComponent(mediator) {
-  const el = document.getElementById('js-lock-entry-point');
-
-  if (!el) return;
-
-  const dataNode = document.getElementById('js-lock-issue-data');
-  const initialData = JSON.parse(dataNode.innerHTML);
-
-  const LockComp = Vue.extend(LockIssueSidebar);
-
-  new LockComp({
-    propsData: {
-      isLocked: initialData.is_locked,
-      isEditable: initialData.is_editable,
-      mediator,
-      issuableType: gl.utils.isInIssuePage() ? 'issue' : 'merge_request',
-    },
-  }).$mount(el);
-}
-
-function mountParticipantsComponent() {
-  const el = document.querySelector('.js-sidebar-participants-entry-point');
-
-  if (!el) return;
-
-  // eslint-disable-next-line no-new
-  new Vue({
-    el,
-    components: {
-      sidebarParticipants,
-    },
-    render: createElement => createElement('sidebar-participants', {}),
-  });
-}
-
-function mountSubscriptionsComponent() {
-  const el = document.querySelector('.js-sidebar-subscriptions-entry-point');
-
-  if (!el) return;
-
-  // eslint-disable-next-line no-new
-  new Vue({
-    el,
-    components: {
-      sidebarSubscriptions,
-    },
-    render: createElement => createElement('sidebar-subscriptions', {}),
-  });
-}
+import mountSidebar from './mount_sidebar';
 
 function domContentLoaded() {
   const sidebarOptions = JSON.parse(document.querySelector('.js-sidebar-options').innerHTML);
   const mediator = new Mediator(sidebarOptions);
   mediator.fetch();
 
-  const sidebarAssigneesEl = document.getElementById('js-vue-sidebar-assignees');
-  // Only create the sidebarAssignees vue app if it is found in the DOM
-  // We currently do not use sidebarAssignees for the MR page
-  if (sidebarAssigneesEl) {
-    new Vue(SidebarAssignees).$mount(sidebarAssigneesEl);
-  }
-
-  mountConfidentialComponent(mediator);
-  mountLockComponent(mediator);
-  mountParticipantsComponent();
-  mountSubscriptionsComponent();
-
-  new SidebarMoveIssue(
-    mediator,
-    $('.js-move-issue'),
-    $('.js-move-issue-confirmation-button'),
-  ).init();
-
-  new Vue(SidebarTimeTracking).$mount('#issuable-time-tracker');
+  mountSidebar(mediator);
 }
 
 document.addEventListener('DOMContentLoaded', domContentLoaded);

app/assets/javascripts/sidebar/sidebar_mediator.js

@@ -5,6 +5,13 @@ import Store from './stores/sidebar_store';
 export default class SidebarMediator {
   constructor(options) {
     if (!SidebarMediator.singleton) {
+      this.initSingleton(options);
+    }
+
+    return SidebarMediator.singleton;
+  }
+
+  initSingleton(options) {
     this.store = new Store(options);
     this.service = new Service({
       endpoint: options.endpoint,
@@ -15,9 +22,6 @@ export default class SidebarMediator {
     SidebarMediator.singleton = this;
   }
 
-    return SidebarMediator.singleton;
-  }
-
   assignYourself() {
     this.store.addAssignee(this.store.currentUser);
   }
@@ -35,15 +39,19 @@ export default class SidebarMediator {
   }
 
   fetch() {
-    this.service.get()
+    return this.service.get()
       .then(response => response.json())
       .then((data) => {
+        this.processFetchedData(data);
+      })
+      .catch(() => new Flash('Error occurred when fetching sidebar data'));
+  }
+
+  processFetchedData(data) {
     this.store.setAssigneeData(data);
     this.store.setTimeTrackingData(data);
     this.store.setParticipantsData(data);
     this.store.setSubscriptionsData(data);
-      })
-      .catch(() => new Flash('Error occurred when fetching sidebar data'));
   }
 
   toggleSubscription() {

app/assets/javascripts/sidebar/stores/sidebar_store.js

@@ -15,6 +15,7 @@ export default class SidebarStore {
         participants: true,
         subscriptions: true,
       };
+      this.isLoading = {};
       this.autocompleteProjects = [];
       this.moveToProjectId = 0;
       this.isLockDialogOpen = false;
@@ -55,6 +56,10 @@ export default class SidebarStore {
     this.isFetching[key] = value;
   }
 
+  setLoadingState(key, value) {
+    this.isLoading[key] = value;
+  }
+
   addAssignee(assignee) {
     if (!this.findAssignee(assignee)) {
       this.assignees.push(assignee);

app/models/namespace.rb

@@ -139,8 +139,18 @@ class Namespace < ActiveRecord::Base
   def find_fork_of(project)
     return nil unless project.fork_network
 
+    if RequestStore.active?
+      forks_in_namespace = RequestStore.fetch("namespaces:#{id}:forked_projects") do
+        Hash.new do |found_forks, project|
+          found_forks[project] = project.fork_network.find_forks_in(projects).first
+        end
+      end
+
+      forks_in_namespace[project]
+    else
       project.fork_network.find_forks_in(projects).first
     end
+  end
 
   def lfs_enabled?
     # User namespace will always default to the global setting

app/views/devise/passwords/edit.html.haml

 = render 'devise/shared/tab_single', tab_title:'Change your password'
 .login-box
   .login-body
-    = form_for(resource, as: resource_name, url: password_path(resource_name), html: { method: :put, class: 'gl-show-field-errors' }) do |f|
+    = form_for(resource, as: resource_name, url: password_path(:user), html: { method: :put, class: 'gl-show-field-errors' }) do |f|
       .devise-errors
         = devise_error_messages!
       = f.hidden_field :reset_password_token
@@ -17,5 +17,5 @@
 .clearfix.prepend-top-20
   %p
     %span.light Didn't receive a confirmation email?
-    = link_to "Request a new one", new_confirmation_path(resource_name)
+    = link_to "Request a new one", new_confirmation_path(:user)
 = render 'devise/shared/sign_in_link'

app/views/devise/sessions/_new_base.html.haml

@@ -11,6 +11,6 @@
         = f.check_box :remember_me, class: 'remember-me-checkbox'
         %span Remember me
       .pull-right.forgot-password
-        = link_to "Forgot your password?", new_password_path(resource_name)
+        = link_to "Forgot your password?", new_password_path(:user)
   .submit-container.move-submit-down
     = f.submit "Sign in", class: "btn btn-save"

app/views/devise/shared/_links.erb

 <%- if controller_name != 'sessions' %>
-  <%= link_to "Sign in", new_session_path(resource_name), class: "btn" %><br />
+  <%= link_to "Sign in", new_session_path(:user, redirect_to_referer: 'yes'), class: "btn" %><br />
 <% end -%>
 
 <%- if devise_mapping.registerable? && controller_name != 'registrations' && allow_signup? %>
-  <%= link_to "Sign up", new_registration_path(resource_name) %><br />
+  <%= link_to "Sign up", new_registration_path(:user) %><br />
 <% end -%>
 
 <%- if devise_mapping.recoverable? && controller_name != 'passwords' %>
-<%= link_to "Forgot your password?", new_password_path(resource_name), class: "btn" %><br />
+<%= link_to "Forgot your password?", new_password_path(:user), class: "btn" %><br />
 <% end -%>
 
 <%- if devise_mapping.confirmable? && controller_name != 'confirmations' %>
-  <%= link_to "Didn't receive confirmation instructions?", new_confirmation_path(resource_name) %><br />
+  <%= link_to "Didn't receive confirmation instructions?", new_confirmation_path(:user) %><br />
 <% end -%>
 
 <%- if devise_mapping.lockable? && resource_class.unlock_strategy_enabled?(:email) && controller_name != 'unlocks' %>
-  <%= link_to "Didn't receive unlock instructions?", new_unlock_path(resource_name) %><br />
+  <%= link_to "Didn't receive unlock instructions?", new_unlock_path(:user) %><br />
 <% end -%>

app/views/devise/shared/_sign_in_link.html.haml

 %p
   %span.light
     Already have login and password?
-    = link_to "Sign in", new_session_path(resource_name)
+    = link_to "Sign in", new_session_path(:user, redirect_to_referer: 'yes')

app/views/devise/shared/_signup_box.html.haml

@@ -31,4 +31,4 @@
   %p
     %span.light Didn't receive a confirmation email?
     = succeed '.' do
-      = link_to "Request a new one", new_confirmation_path(resource_name)
+      = link_to "Request a new one", new_confirmation_path(:user)

app/views/errors/omniauth_error.html.haml

@@ -9,7 +9,7 @@
   %p Try logging in using your username or email. If you have forgotten your password, try recovering it
 
   = link_to "Sign in", new_session_path(:user), class: 'btn primary'
-  = link_to "Recover password", new_password_path(resource_name), class: 'btn secondary'
+  = link_to "Recover password", new_password_path(:user), class: 'btn secondary'
 
   %hr
   %p.light If none of the options work, try contacting a GitLab administrator.

app/views/shared/issuable/_nav.html.haml

 - type = local_assigns.fetch(:type, :issues)
 - page_context_word = type.to_s.humanize(capitalize: false)
-- issuables = @issues || @merge_requests
 
 %ul.nav-links.issues-state-filters
   %li{ class: active_when(params[:state] == 'opened') }>
@@ -20,6 +19,4 @@
       = link_to page_filter_path(state: 'closed', label: true), id: 'state-closed', title: 'Filter by issues that are currently closed.', data: { state: 'closed' } do
         #{issuables_state_counter_text(type, :closed)}
 
-  %li{ class: active_when(params[:state] == 'all') }>
-    = link_to page_filter_path(state: 'all', label: true), id: 'state-all', title: "Show all #{page_context_word}.", data: { state: 'all' } do
-      #{issuables_state_counter_text(type, :all)}
+  = render 'shared/issuable/nav_links/all', page_context_word: page_context_word, counter: issuables_state_counter_text(type, :all)

app/views/shared/issuable/nav_links/_all.html.haml

+- page_context_word = local_assigns.fetch(:page_context_word)
+- counter = local_assigns.fetch(:counter)
+
+%li{ class: active_when(params[:state] == 'all') }>
+  = link_to page_filter_path(state: 'all', label: true), id: 'state-all', title: "Show all #{page_context_word}.", data: { state: 'all' } do
+    #{counter}

changelogs/unreleased/39367-fix-new-email-session-path.yml

+---
+title: Confirming email with invalid token should no longer generate an error
+merge_request: 15726
+author:
+type: fixed

changelogs/unreleased/bvl-limit-fork-queries-on-project-show.yml

+---
+title: Reduce requests for project forks on show page of projects that have forks
+merge_request: 15663
+author:
+type: performance

doc/development/writing_documentation.md

@@ -152,12 +152,23 @@ CE and EE.
 ## Previewing the changes live
 
 If you want to preview the doc changes of your merge request live, you can use
-the manual `review-docs-deploy` job in your merge request.
+the manual `review-docs-deploy` job in your merge request. You will need at
+least Master permissions to be able to run it and is currently enabled for the
+following projects:
+
+- https://gitlab.com/gitlab-org/gitlab-ce
+- https://gitlab.com/gitlab-org/gitlab-ee
+
+NOTE: **Note:**
+You will need to push a branch to those repositories, it doesn't work for forks.
 
 TIP: **Tip:**
 If your branch contains only documentation changes, you can use
 [special branch names](#testing) to avoid long running pipelines.
 
+In the mini pipeline graph, you should see an `>>` icon. Clicking on it will
+reveal the `review-docs-deploy` job. Hit the play button for the job to start.
+
 ![Manual trigger a docs build](img/manual_build_docs.png)
 
 This job will:

lib/gitlab/git/conflict/file.rb

@@ -2,7 +2,7 @@ module Gitlab
   module Git
     module Conflict
       class File
-        attr_reader :content, :their_path, :our_path, :our_mode, :repository
+        attr_reader :content, :their_path, :our_path, :our_mode, :repository, :commit_oid
 
         def initialize(repository, commit_oid, conflict, content)
           @repository = repository

lib/gitlab/git/conflict/resolver.rb

@@ -75,7 +75,7 @@ module Gitlab
             resolved_lines = file.resolve_lines(params[:sections])
             new_file = resolved_lines.map { |line| line[:full_line] }.join("\n")
 
-            new_file << "\n" if file.our_blob.data.ends_with?("\n")
+            new_file << "\n" if file.our_blob.data.end_with?("\n")
           elsif params[:content]
             new_file = file.resolve_content(params[:content])
           end

lib/gitlab/git/repository.rb

@@ -18,6 +18,8 @@ module Gitlab
         GIT_ALTERNATE_OBJECT_DIRECTORIES_RELATIVE
       ].freeze
       SEARCH_CONTEXT_LINES = 3
+      REBASE_WORKTREE_PREFIX = 'rebase'.freeze
+      SQUASH_WORKTREE_PREFIX = 'squash'.freeze
 
       NoRepository = Class.new(StandardError)
       InvalidBlobName = Class.new(StandardError)
@@ -1070,13 +1072,8 @@ module Gitlab
         raise ArgumentError, "invalid ref_path #{ref_path.inspect}" if ref_path.include?(' ')
         raise ArgumentError, "invalid ref #{ref.inspect}" if ref.include?("\x00")
 
-        command = [Gitlab.config.git.bin_path] + %w[update-ref --stdin -z]
         input = "update #{ref_path}\x00#{ref}\x00\x00"
-        output, status = circuit_breaker.perform do
-          popen(command, path) { |stdin| stdin.write(input) }
-        end
-
-        raise GitError, output unless status.zero?
+        run_git!(%w[update-ref --stdin -z]) { |stdin| stdin.write(input) }
       end
 
       def fetch_ref(source_repository, source_ref:, target_ref:)
@@ -1098,12 +1095,20 @@ module Gitlab
       end
 
       # Refactoring aid; allows us to copy code from app/models/repository.rb
-      def run_git(args, env: {}, nice: false)
+      def run_git(args, chdir: path, env: {}, nice: false, &block)
         cmd = [Gitlab.config.git.bin_path, *args]
         cmd.unshift("nice") if nice
         circuit_breaker.perform do
-          popen(cmd, path, env)
+          popen(cmd, chdir, env, &block)
+        end
       end
+
+      def run_git!(args, chdir: path, env: {}, nice: false, &block)
+        output, status = run_git(args, chdir: chdir, env: env, nice: nice, &block)
+
+        raise GitError, output unless status.zero?
+
+        output
       end
 
       # Refactoring aid; allows us to copy code from app/models/repository.rb
@@ -1175,6 +1180,64 @@ module Gitlab
         raise GitError.new("Could not fsck repository:\n#{output}") unless status.zero?
       end
 
+      def rebase(user, rebase_id, branch:, branch_sha:, remote_repository:, remote_branch:)
+        rebase_path = worktree_path(REBASE_WORKTREE_PREFIX, rebase_id)
+        env = git_env_for_user(user)
+
+        with_worktree(rebase_path, branch, env: env) do
+          run_git!(
+            %W(pull --rebase #{remote_repository.path} #{remote_branch}),
+            chdir: rebase_path, env: env
+          )
+
+          rebase_sha = run_git!(%w(rev-parse HEAD), chdir: rebase_path, env: env).strip
+
+          Gitlab::Git::OperationService.new(user, self)
+            .update_branch(branch, rebase_sha, branch_sha)
+
+          rebase_sha
+        end
+      end
+
+      def rebase_in_progress?(rebase_id)
+        fresh_worktree?(worktree_path(REBASE_WORKTREE_PREFIX, rebase_id))
+      end
+
+      def squash(user, squash_id, branch:, start_sha:, end_sha:, author:, message:)
+        squash_path = worktree_path(SQUASH_WORKTREE_PREFIX, squash_id)
+        env = git_env_for_user(user).merge(
+          'GIT_AUTHOR_NAME' => author.name,
+          'GIT_AUTHOR_EMAIL' => author.email
+        )
+        diff_range = "#{start_sha}...#{end_sha}"
+        diff_files = run_git!(
+          %W(diff --name-only --diff-filter=a --binary #{diff_range})
+        ).chomp
+
+        with_worktree(squash_path, branch, sparse_checkout_files: diff_files, env: env) do
+          # Apply diff of the `diff_range` to the worktree
+          diff = run_git!(%W(diff --binary #{diff_range}))
+          run_git!(%w(apply --index), chdir: squash_path, env: env) do |stdin|
+            stdin.write(diff)
+          end
+
+          # Commit the `diff_range` diff
+          run_git!(%W(commit --no-verify --message #{message}), chdir: squash_path, env: env)
+
+          # Return the squash sha. May print a warning for ambiguous refs, but
+          # we can ignore that with `--quiet` and just take the SHA, if present.
+          # HEAD here always refers to the current HEAD commit, even if there is
+          # another ref called HEAD.
+          run_git!(
+            %w(rev-parse --quiet --verify HEAD), chdir: squash_path, env: env
+          ).chomp
+        end
+      end
+
+      def squash_in_progress?(squash_id)
+        fresh_worktree?(worktree_path(SQUASH_WORKTREE_PREFIX, squash_id))
+      end
+
       def gitaly_repository
         Gitlab::GitalyClient::Util.repository(@storage, @relative_path, @gl_repository)
       end
@@ -1211,6 +1274,57 @@ module Gitlab
 
       private
 
+      def fresh_worktree?(path)
+        File.exist?(path) && !clean_stuck_worktree(path)
+      end
+
+      def with_worktree(worktree_path, branch, sparse_checkout_files: nil, env:)
+        base_args = %w(worktree add --detach)
+
+        # Note that we _don't_ want to test for `.present?` here: If the caller
+        # passes an non nil empty value it means it still wants sparse checkout
+        # but just isn't interested in any file, perhaps because it wants to
+        # checkout files in by a changeset but that changeset only adds files.
+        if sparse_checkout_files
+          # Create worktree without checking out
+          run_git!(base_args + ['--no-checkout', worktree_path], env: env)
+          worktree_git_path = run_git!(%w(rev-parse --git-dir), chdir: worktree_path)
+
+          configure_sparse_checkout(worktree_git_path, sparse_checkout_files)
+
+          # After sparse checkout configuration, checkout `branch` in worktree
+          run_git!(%W(checkout --detach #{branch}), chdir: worktree_path, env: env)
+        else
+          # Create worktree and checkout `branch` in it
+          run_git!(base_args + [worktree_path, branch], env: env)
+        end
+
+        yield
+      ensure
+        FileUtils.rm_rf(worktree_path) if File.exist?(worktree_path)
+        FileUtils.rm_rf(worktree_git_path) if worktree_git_path && File.exist?(worktree_git_path)
+      end
+
+      def clean_stuck_worktree(path)
+        return false unless File.mtime(path) < 15.minutes.ago
+
+        FileUtils.rm_rf(path)
+        true
+      end
+
+      # Adding a worktree means checking out the repository. For large repos,
+      # this can be very expensive, so set up sparse checkout for the worktree
+      # to only check out the files we're interested in.
+      def configure_sparse_checkout(worktree_git_path, files)
+        run_git!(%w(config core.sparseCheckout true))
+
+        return if files.empty?
+
+        worktree_info_path = File.join(worktree_git_path, 'info')
+        FileUtils.mkdir_p(worktree_info_path)
+        File.write(File.join(worktree_info_path, 'sparse-checkout'), files)
+      end
+
       def rugged_fetch_source_branch(source_repository, source_branch, local_ref)
         with_repo_branch_commit(source_repository, source_branch) do |commit|
           if commit
@@ -1222,6 +1336,24 @@ module Gitlab
         end
       end
 
+      def worktree_path(prefix, id)
+        id = id.to_s
+        raise ArgumentError, "worktree id can't be empty" unless id.present?
+        raise ArgumentError, "worktree id can't contain slashes " if id.include?("/")
+
+        File.join(path, 'gitlab-worktree', "#{prefix}-#{id}")
+      end
+
+      def git_env_for_user(user)
+        {
+          'GIT_COMMITTER_NAME' => user.name,
+          'GIT_COMMITTER_EMAIL' => user.email,
+          'GL_ID' => Gitlab::GlId.gl_id(user),
+          'GL_PROTOCOL' => Gitlab::Git::Hook::GL_PROTOCOL,
+          'GL_REPOSITORY' => gl_repository
+        }
+      end
+
       # Gitaly note: JV: Trying to get rid of the 'filter' option so we can implement this with 'git'.
       def branches_filter(filter: nil, sort_by: nil)
         # n+1: https://gitlab.com/gitlab-org/gitlab-ce/issues/37464

spec/controllers/projects_controller_spec.rb

@@ -261,6 +261,27 @@ describe ProjectsController do
         expect(response).to redirect_to(namespace_project_path)
       end
     end
+
+    context 'when the project is forked and has a repository', :request_store do
+      let(:public_project) { create(:project, :public, :repository) }
+      let(:other_user) { create(:user) }
+
+      render_views
+
+      before do
+        # View the project as a user that does not have any rights
+        sign_in(other_user)
+
+        fork_project(public_project)
+      end
+
+      it 'does not increase the number of queries when the project is forked' do
+        expected_query = /#{public_project.fork_network.find_forks_in(other_user.namespace).to_sql}/
+
+        expect { get(:show, namespace_id: public_project.namespace, id: public_project) }
+          .not_to exceed_query_limit(1).for_query(expected_query)
+      end
+    end
   end
 
   describe "#update" do

spec/javascripts/boards/issue_spec.js

@@ -146,6 +146,12 @@ describe('Issue model', () => {
     expect(issue.isFetching.subscriptions).toBe(false);
   });
 
+  it('sets loading state', () => {
+    issue.setLoadingState('foo', true);
+
+    expect(issue.isLoading.foo).toBe(true);
+  });
+
   describe('update', () => {
     it('passes assignee ids when there are assignees', (done) => {
       spyOn(Vue.http, 'patch').and.callFake((url, data) => {

spec/javascripts/sidebar/mock_data.js

 /* eslint-disable quote-props*/
 
-const sidebarMockData = {
+const RESPONSE_MAP = {
   'GET': {
     '/gitlab-org/gitlab-shell/issues/5.json': {
       id: 45,
@@ -66,6 +66,65 @@ const sidebarMockData = {
       },
       labels: [],
     },
+    '/gitlab-org/gitlab-shell/issues/5.json?serializer=sidebar': {
+      assignees: [
+        {
+          name: 'User 0',
+          username: 'user0',
+          id: 22,
+          state: 'active',
+          avatar_url: 'http: //www.gravatar.com/avatar/52e4ce24a915fb7e51e1ad3b57f4b00a?s=80\u0026d=identicon',
+          web_url: 'http: //localhost:3001/user0',
+        },
+        {
+          name: 'Marguerite Bartell',
+          username: 'tajuana',
+          id: 18,
+          state: 'active',
+          avatar_url: 'http: //www.gravatar.com/avatar/4852a41fb41616bf8f140d3701673f53?s=80\u0026d=identicon',
+          web_url: 'http: //localhost:3001/tajuana',
+        },
+        {
+          name: 'Laureen Ritchie',
+          username: 'michaele.will',
+          id: 16,
+          state: 'active',
+          avatar_url: 'http: //www.gravatar.com/avatar/e301827eb03be955c9c172cb9a8e4e8a?s=80\u0026d=identicon',
+          web_url: 'http: //localhost:3001/michaele.will',
+        },
+      ],
+      human_time_estimate: null,
+      human_total_time_spent: null,
+      participants: [
+        {
+          name: 'User 0',
+          username: 'user0',
+          id: 22,
+          state: 'active',
+          avatar_url: 'http: //www.gravatar.com/avatar/52e4ce24a915fb7e51e1ad3b57f4b00a?s=80\u0026d=identicon',
+          web_url: 'http: //localhost:3001/user0',
+        },
+        {
+          name: 'Marguerite Bartell',
+          username: 'tajuana',
+          id: 18,
+          state: 'active',
+          avatar_url: 'http: //www.gravatar.com/avatar/4852a41fb41616bf8f140d3701673f53?s=80\u0026d=identicon',
+          web_url: 'http: //localhost:3001/tajuana',
+        },
+        {
+          name: 'Laureen Ritchie',
+          username: 'michaele.will',
+          id: 16,
+          state: 'active',
+          avatar_url: 'http: //www.gravatar.com/avatar/e301827eb03be955c9c172cb9a8e4e8a?s=80\u0026d=identicon',
+          web_url: 'http: //localhost:3001/michaele.will',
+        },
+      ],
+      subscribed: true,
+      time_estimate: 0,
+      total_time_spent: 0,
+    },
     '/autocomplete/projects?project_id=15': [
       {
         'id': 0,
@@ -113,9 +172,10 @@ const sidebarMockData = {
   },
 };
 
-export default {
+const mockData = {
+  responseMap: RESPONSE_MAP,
   mediator: {
-    endpoint: '/gitlab-org/gitlab-shell/issues/5.json',
+    endpoint: '/gitlab-org/gitlab-shell/issues/5.json?serializer=sidebar',
     toggleSubscriptionEndpoint: '/gitlab-org/gitlab-shell/issues/5/toggle_subscription',
     moveIssueEndpoint: '/gitlab-org/gitlab-shell/issues/5/move',
     projectsAutocompleteEndpoint: '/autocomplete/projects?project_id=15',
@@ -141,12 +201,14 @@ export default {
     name: 'Administrator',
     username: 'root',
   },
+};
 
-  sidebarMockInterceptor(request, next) {
-    const body = sidebarMockData[request.method.toUpperCase()][request.url];
+mockData.sidebarMockInterceptor = function (request, next) {
+  const body = this.responseMap[request.method.toUpperCase()][request.url];
 
   next(request.respondWith(JSON.stringify(body), {
     status: 200,
   }));
-  },
-};
+}.bind(mockData);
+
+export default mockData;

spec/javascripts/sidebar/sidebar_mediator_spec.js

@@ -33,10 +33,29 @@ describe('Sidebar mediator', () => {
       .catch(done.fail);
   });
 
-  it('fetches the data', () => {
-    spyOn(this.mediator.service, 'get').and.callThrough();
-    this.mediator.fetch();
-    expect(this.mediator.service.get).toHaveBeenCalled();
+  it('fetches the data', (done) => {
+    const mockData = Mock.responseMap.GET['/gitlab-org/gitlab-shell/issues/5.json?serializer=sidebar'];
+    spyOn(this.mediator, 'processFetchedData').and.callThrough();
+
+    this.mediator.fetch()
+      .then(() => {
+        expect(this.mediator.processFetchedData).toHaveBeenCalledWith(mockData);
+      })
+      .then(done)
+      .catch(done.fail);
+  });
+
+  it('processes fetched data', () => {
+    const mockData = Mock.responseMap.GET['/gitlab-org/gitlab-shell/issues/5.json?serializer=sidebar'];
+    this.mediator.processFetchedData(mockData);
+
+    expect(this.mediator.store.assignees).toEqual(mockData.assignees);
+    expect(this.mediator.store.humanTimeEstimate).toEqual(mockData.human_time_estimate);
+    expect(this.mediator.store.humanTotalTimeSpent).toEqual(mockData.human_total_time_spent);
+    expect(this.mediator.store.participants).toEqual(mockData.participants);
+    expect(this.mediator.store.subscribed).toEqual(mockData.subscribed);
+    expect(this.mediator.store.timeEstimate).toEqual(mockData.time_estimate);
+    expect(this.mediator.store.totalTimeSpent).toEqual(mockData.total_time_spent);
   });
 
   it('sets moveToProjectId', () => {

spec/javascripts/sidebar/sidebar_store_spec.js

@@ -120,6 +120,12 @@ describe('Sidebar store', () => {
     expect(this.store.isFetching.participants).toEqual(false);
   });
 
+  it('sets loading state', () => {
+    this.store.setLoadingState('assignees', true);
+
+    expect(this.store.isLoading.assignees).toEqual(true);
+  });
+
   it('set time tracking data', () => {
     this.store.setTimeTrackingData(Mock.time);
     expect(this.store.timeEstimate).toEqual(Mock.time.time_estimate);

spec/models/namespace_spec.rb

@@ -531,7 +531,7 @@ describe Namespace do
     end
   end
 
-  describe '#has_forks_of?' do
+  describe '#find_fork_of?' do
     let(:project) { create(:project, :public) }
     let!(:forked_project) { fork_project(project, namespace.owner, namespace: namespace) }
 
@@ -550,5 +550,13 @@ describe Namespace do
 
       expect(other_namespace.find_fork_of(project)).to eq(other_fork)
     end
+
+    context 'with request store enabled', :request_store do
+      it 'only queries once' do
+        expect(project.fork_network).to receive(:find_forks_in).once.and_call_original
+
+        2.times { namespace.find_fork_of(project) }
+      end
+    end
   end
 end

spec/support/query_recorder.rb

@@ -41,7 +41,8 @@ RSpec::Matchers.define :exceed_query_limit do |expected|
   supports_block_expectations
 
   match do |block|
-    query_count(&block) > expected_count + threshold
+    @subject_block = block
+    actual_count > expected_count + threshold
   end
 
   failure_message_when_negated do |actual|
@@ -55,6 +56,11 @@ RSpec::Matchers.define :exceed_query_limit do |expected|
     self
   end
 
+  def for_query(query)
+    @query = query
+    self
+  end
+
   def threshold
     @threshold.to_i
   end
@@ -68,12 +74,15 @@ RSpec::Matchers.define :exceed_query_limit do |expected|
   end
 
   def actual_count
-    @recorder.count
+    @actual_count ||= if @query
+                        recorder.log.select { |recorded| recorded =~ @query }.size
+                      else
+                        recorder.count
+                      end
   end
 
-  def query_count(&block)
-    @recorder = ActiveRecord::QueryRecorder.new(&block)
-    @recorder.count
+  def recorder
+    @recorder ||= ActiveRecord::QueryRecorder.new(&@subject_block)
   end
 
   def count_queries(queries)