Merge branch 'master' into ph-axios-2

.codeclimate.yml

 ---
 engines:
-  brakeman:
-    enabled: true
   bundler-audit:
     enabled: true
   duplication:

GITALY_SERVER_VERSION

-0.74.0
+0.76.0

Gemfile

@@ -132,7 +132,7 @@ gem 'asciidoctor-plantuml', '0.0.7'
 gem 'rouge', '~> 2.0'
 gem 'truncato', '~> 0.7.9'
 gem 'bootstrap_form', '~> 2.7.0'
-gem 'nokogiri', '~> 1.8.1'
+gem 'nokogiri', '~> 1.8.2'
 
 # Diffs
 gem 'diffy', '~> 3.1.0'
@@ -406,7 +406,7 @@ group :ed25519 do
 end
 
 # Gitaly GRPC client
-gem 'gitaly-proto', '~> 0.78.0', require: 'gitaly'
+gem 'gitaly-proto', '~> 0.83.0', require: 'gitaly'
 
 gem 'toml-rb', '~> 0.3.15', require: false
 

Gemfile.lock

@@ -285,7 +285,7 @@ GEM
       po_to_json (>= 1.0.0)
       rails (>= 3.2.0)
     gherkin-ruby (0.3.2)
-    gitaly-proto (0.78.0)
+    gitaly-proto (0.83.0)
       google-protobuf (~> 3.1)
       grpc (~> 1.0)
     github-linguist (4.7.6)
@@ -340,7 +340,7 @@ GEM
       mime-types (~> 3.0)
       representable (~> 3.0)
       retriable (>= 2.0, < 4.0)
-    google-protobuf (3.4.1.1)
+    google-protobuf (3.5.1.1-universal-darwin)
     googleapis-common-protos-types (1.0.1)
       google-protobuf (~> 3.0)
     googleauth (0.5.3)
@@ -369,7 +369,7 @@ GEM
       rake
     grape_logging (1.7.0)
       grape
-    grpc (1.8.3)
+    grpc (1.8.3-universal-darwin)
       google-protobuf (~> 3.1)
       googleapis-common-protos-types (~> 1.0.0)
       googleauth (>= 0.5.1, < 0.7)
@@ -513,7 +513,7 @@ GEM
     net-ldap (0.16.0)
     net-ssh (4.1.0)
     netrc (0.11.0)
-    nokogiri (1.8.1)
+    nokogiri (1.8.2)
       mini_portile2 (~> 2.3.0)
     numerizer (0.1.1)
     oauth (0.5.1)
@@ -1056,7 +1056,7 @@ DEPENDENCIES
   gettext (~> 3.2.2)
   gettext_i18n_rails (~> 1.8.0)
   gettext_i18n_rails_js (~> 1.2.0)
-  gitaly-proto (~> 0.78.0)
+  gitaly-proto (~> 0.83.0)
   github-linguist (~> 4.7.0)
   gitlab-flowdock-git-hook (~> 1.0.1)
   gitlab-markup (~> 1.6.2)
@@ -1100,7 +1100,7 @@ DEPENDENCIES
   mysql2 (~> 0.4.10)
   net-ldap
   net-ssh (~> 4.1.0)
-  nokogiri (~> 1.8.1)
+  nokogiri (~> 1.8.2)
   oauth2 (~> 1.4)
   octokit (~> 4.6.2)
   oj (~> 2.17.4)

app/assets/javascripts/api.js

-import $ from 'jquery';
+import _ from 'underscore';
 import axios from './lib/utils/axios_utils';
 
 const Api = {
   groupsPath: '/api/:version/groups.json',
-  groupPath: '/api/:version/groups/:id.json',
+  groupPath: '/api/:version/groups/:id',
   namespacesPath: '/api/:version/namespaces.json',
   groupProjectsPath: '/api/:version/groups/:id/projects.json',
   projectsPath: '/api/:version/projects.json',
@@ -23,42 +23,44 @@ const Api = {
   group(groupId, callback) {
     const url = Api.buildUrl(Api.groupPath)
       .replace(':id', groupId);
-    return $.ajax({
-      url,
-      dataType: 'json',
-    })
-      .done(group => callback(group));
+    return axios.get(url)
+      .then(({ data }) => {
+        callback(data);
+
+        return data;
+      });
   },
 
   // Return groups list. Filtered by query
   groups(query, options, callback) {
     const url = Api.buildUrl(Api.groupsPath);
-    return $.ajax({
-      url,
-      data: Object.assign({
+    return axios.get(url, {
+      params: Object.assign({
         search: query,
         per_page: 20,
       }, options),
-      dataType: 'json',
     })
-      .done(groups => callback(groups));
+      .then(({ data }) => {
+        callback(data);
+
+        return data;
+      });
   },
 
   // Return namespaces list. Filtered by query
   namespaces(query, callback) {
     const url = Api.buildUrl(Api.namespacesPath);
-    return $.ajax({
-      url,
-      data: {
+    return axios.get(url, {
+      params: {
         search: query,
         per_page: 20,
       },
-      dataType: 'json',
-    }).done(namespaces => callback(namespaces));
+    })
+      .then(({ data }) => callback(data));
   },
 
   // Return projects list. Filtered by query
-  projects(query, options, callback) {
+  projects(query, options, callback = _.noop) {
     const url = Api.buildUrl(Api.projectsPath);
     const defaults = {
       search: query,
@@ -70,12 +72,14 @@ const Api = {
       defaults.membership = true;
     }
 
-    return $.ajax({
-      url,
-      data: Object.assign(defaults, options),
-      dataType: 'json',
+    return axios.get(url, {
+      params: Object.assign(defaults, options),
     })
-      .done(projects => callback(projects));
+      .then(({ data }) => {
+        callback(data);
+
+        return data;
+      });
   },
 
   // Return single project
@@ -97,41 +101,34 @@ const Api = {
       url = Api.buildUrl(Api.groupLabelsPath).replace(':namespace_path', namespacePath);
     }
 
-    return $.ajax({
-      url,
-      type: 'POST',
-      data: { label: data },
-      dataType: 'json',
+    return axios.post(url, {
+      label: data,
     })
-      .done(label => callback(label))
-      .fail(message => callback(message.responseJSON));
+      .then(res => callback(res.data))
+      .catch(e => callback(e.response.data));
   },
 
   // Return group projects list. Filtered by query
   groupProjects(groupId, query, callback) {
     const url = Api.buildUrl(Api.groupProjectsPath)
       .replace(':id', groupId);
-    return $.ajax({
-      url,
-      data: {
+    return axios.get(url, {
+      params: {
         search: query,
         per_page: 20,
       },
-      dataType: 'json',
     })
-      .done(projects => callback(projects));
+      .then(({ data }) => callback(data));
   },
 
   commitMultiple(id, data) {
     // see https://docs.gitlab.com/ce/api/commits.html#create-a-commit-with-multiple-files-and-actions
     const url = Api.buildUrl(Api.commitPath)
       .replace(':id', encodeURIComponent(id));
-    return this.wrapAjaxCall({
-      url,
-      type: 'POST',
-      contentType: 'application/json; charset=utf-8',
-      data: JSON.stringify(data),
-      dataType: 'json',
+    return axios.post(url, JSON.stringify(data), {
+      headers: {
+        'Content-Type': 'application/json; charset=utf-8',
+      },
     });
   },
 
@@ -140,40 +137,37 @@ const Api = {
       .replace(':id', encodeURIComponent(id))
       .replace(':branch', branch);
 
-    return this.wrapAjaxCall({
-      url,
-      type: 'GET',
-      contentType: 'application/json; charset=utf-8',
-      dataType: 'json',
-    });
+    return axios.get(url);
   },
 
   // Return text for a specific license
   licenseText(key, data, callback) {
     const url = Api.buildUrl(Api.licensePath)
       .replace(':key', key);
-    return $.ajax({
-      url,
-      data,
+    return axios.get(url, {
+      params: data,
     })
-      .done(license => callback(license));
+      .then(res => callback(res.data));
   },
 
   gitignoreText(key, callback) {
     const url = Api.buildUrl(Api.gitignorePath)
       .replace(':key', key);
-    return $.get(url, gitignore => callback(gitignore));
+    return axios.get(url)
+      .then(({ data }) => callback(data));
   },
 
   gitlabCiYml(key, callback) {
     const url = Api.buildUrl(Api.gitlabCiYmlPath)
       .replace(':key', key);
-    return $.get(url, file => callback(file));
+    return axios.get(url)
+      .then(({ data }) => callback(data));
   },
 
   dockerfileYml(key, callback) {
     const url = Api.buildUrl(Api.dockerfilePath).replace(':key', key);
-    $.get(url, callback);
+    return axios.get(url)
+      .then(({ data }) => callback(data));
   },
 
   issueTemplate(namespacePath, projectPath, key, type, callback) {
@@ -182,23 +176,18 @@ const Api = {
       .replace(':type', type)
       .replace(':project_path', projectPath)
       .replace(':namespace_path', namespacePath);
-    $.ajax({
-      url,
-      dataType: 'json',
-    })
-      .done(file => callback(null, file))
-      .fail(callback);
+    return axios.get(url)
+      .then(({ data }) => callback(null, data))
+      .catch(callback);
   },
 
   users(query, options) {
     const url = Api.buildUrl(this.usersPath);
-    return Api.wrapAjaxCall({
-      url,
-      data: Object.assign({
+    return axios.get(url, {
+      params: Object.assign({
         search: query,
         per_page: 20,
       }, options),
-      dataType: 'json',
     });
   },
 
@@ -209,21 +198,6 @@ const Api = {
     }
     return urlRoot + url.replace(':version', gon.api_version);
   },
-
-  wrapAjaxCall(options) {
-    return new Promise((resolve, reject) => {
-      // jQuery 2 is not Promises/A+ compatible (missing catch)
-      $.ajax(options) // eslint-disable-line promise/catch-or-return
-      .then(data => resolve(data),
-        (jqXHR, textStatus, errorThrown) => {
-          const error = new Error(`${options.url}: ${errorThrown}`);
-          error.textStatus = textStatus;
-          if (jqXHR && jqXHR.responseJSON) error.responseJSON = jqXHR.responseJSON;
-          reject(error);
-        },
-      );
-    });
-  },
 };
 
 export default Api;

app/assets/javascripts/blob/viewer/index.js

 import Flash from '../../flash';
 import { handleLocationHash } from '../../lib/utils/common_utils';
+import axios from '../../lib/utils/axios_utils';
 
 export default class BlobViewer {
   constructor() {
@@ -127,25 +128,18 @@ export default class BlobViewer {
     const viewer = viewerParam;
     const url = viewer.getAttribute('data-url');
 
-    return new Promise((resolve, reject) => {
     if (!url || viewer.getAttribute('data-loaded') || viewer.getAttribute('data-loading')) {
-        resolve(viewer);
-        return;
+      return Promise.resolve(viewer);
     }
 
     viewer.setAttribute('data-loading', 'true');
 
-      $.ajax({
-        url,
-        dataType: 'JSON',
-      })
-      .fail(reject)
-      .done((data) => {
+    return axios.get(url)
+      .then(({ data }) => {
         viewer.innerHTML = data.html;
         viewer.setAttribute('data-loaded', 'true');
 
-        resolve(viewer);
-      });
+        return viewer;
       });
   }
 }

app/assets/javascripts/commits.js

@@ -5,6 +5,7 @@
 import { pluralize } from './lib/utils/text_utility';
 import { localTimeAgo } from './lib/utils/datetime_utility';
 import Pager from './pager';
+import axios from './lib/utils/axios_utils';
 
 export default (function () {
   const CommitsList = {};
@@ -43,28 +44,29 @@ export default (function () {
   CommitsList.filterResults = function () {
     const form = $('.commits-search-form');
     const search = CommitsList.searchField.val();
-    if (search === CommitsList.lastSearch) return;
+    if (search === CommitsList.lastSearch) return Promise.resolve();
     const commitsUrl = form.attr('action') + '?' + form.serialize();
     CommitsList.content.fadeTo('fast', 0.5);
-    return $.ajax({
-      type: 'GET',
-      url: form.attr('action'),
-      data: form.serialize(),
-      complete: function () {
-        return CommitsList.content.fadeTo('fast', 1.0);
-      },
-      success: function (data) {
+    const params = form.serializeArray().reduce((acc, obj) => Object.assign(acc, {
+      [obj.name]: obj.value,
+    }), {});
+
+    return axios.get(form.attr('action'), {
+      params,
+    })
+      .then(({ data }) => {
         CommitsList.lastSearch = search;
         CommitsList.content.html(data.html);
-        return history.replaceState({
-          page: commitsUrl,
+        CommitsList.content.fadeTo('fast', 1.0);
+
         // Change url so if user reload a page - search results are saved
+        history.replaceState({
+          page: commitsUrl,
         }, document.title, commitsUrl);
-      },
-      error: function () {
+      })
+      .catch(() => {
+        CommitsList.content.fadeTo('fast', 1.0);
         CommitsList.lastSearch = null;
-      },
-      dataType: 'json',
       });
   };
 

app/assets/javascripts/create_item_dropdown.js

@@ -12,6 +12,7 @@ export default class CreateItemDropdown {
     this.fieldName = options.fieldName;
     this.onSelect = options.onSelect || (() => {});
     this.getDataOption = options.getData;
+    this.createNewItemFromValueOption = options.createNewItemFromValue;
     this.$dropdown = options.$dropdown;
     this.$dropdownContainer = this.$dropdown.parent();
     this.$dropdownFooter = this.$dropdownContainer.find('.dropdown-footer');
@@ -30,15 +31,15 @@ export default class CreateItemDropdown {
       filterable: true,
       remote: false,
       search: {
-        fields: ['title'],
+        fields: ['text'],
       },
       selectable: true,
       toggleLabel(selected) {
-        return (selected && 'id' in selected) ? selected.title : this.defaultToggleLabel;
+        return (selected && 'id' in selected) ? _.escape(selected.title) : this.defaultToggleLabel;
       },
       fieldName: this.fieldName,
       text(item) {
-        return _.escape(item.title);
+        return _.escape(item.text);
       },
       id(item) {
         return _.escape(item.id);
@@ -51,6 +52,11 @@ export default class CreateItemDropdown {
     });
   }
 
+  clearDropdown() {
+    this.$dropdownContainer.find('.dropdown-content').html('');
+    this.$dropdownContainer.find('.dropdown-input-field').val('');
+  }
+
   bindEvents() {
     this.$createButton.on('click', this.onClickCreateWildcard.bind(this));
   }
@@ -58,9 +64,13 @@ export default class CreateItemDropdown {
   onClickCreateWildcard(e) {
     e.preventDefault();
 
+    this.refreshData();
+    this.$dropdown.data('glDropdown').selectRowAtIndex();
+  }
+
+  refreshData() {
     // Refresh the dropdown's data, which ends up calling `getData`
     this.$dropdown.data('glDropdown').remote.execute();
-    this.$dropdown.data('glDropdown').selectRowAtIndex();
   }
 
   getData(term, callback) {
@@ -79,20 +89,28 @@ export default class CreateItemDropdown {
     });
   }
 
-  toggleCreateNewButton(item) {
-    if (item) {
-      this.selectedItem = {
-        title: item,
-        id: item,
-        text: item,
+  createNewItemFromValue(newValue) {
+    if (this.createNewItemFromValueOption) {
+      return this.createNewItemFromValueOption(newValue);
+    }
+
+    return {
+      title: newValue,
+      id: newValue,
+      text: newValue,
     };
+  }
+
+  toggleCreateNewButton(newValue) {
+    if (newValue) {
+      this.selectedItem = this.createNewItemFromValue(newValue);
 
       this.$dropdownContainer
         .find('.js-dropdown-create-new-item code')
-        .text(item);
+        .text(newValue);
     }
 
-    this.toggleFooter(!item);
+    this.toggleFooter(!newValue);
   }
 
   toggleFooter(toggleState) {

app/assets/javascripts/gl_dropdown.js

@@ -2,6 +2,7 @@
 /* global fuzzaldrinPlus */
 import _ from 'underscore';
 import fuzzaldrinPlus from 'fuzzaldrin-plus';
+import axios from './lib/utils/axios_utils';
 import { visitUrl } from './lib/utils/url_utility';
 import { isObject } from './lib/utils/type_utility';
 
@@ -212,25 +213,17 @@ GitLabDropdownRemote = (function() {
   };
 
   GitLabDropdownRemote.prototype.fetchData = function() {
-    return $.ajax({
-      url: this.dataEndpoint,
-      dataType: this.options.dataType,
-      beforeSend: (function(_this) {
-        return function() {
-          if (_this.options.beforeSend) {
-            return _this.options.beforeSend();
+    if (this.options.beforeSend) {
+      this.options.beforeSend();
     }
-        };
-      })(this),
-      success: (function(_this) {
-        return function(data) {
-          if (_this.options.success) {
-            return _this.options.success(data);
+
+    // Fetch the data through ajax if the data is a string
+    return axios.get(this.dataEndpoint)
+      .then(({ data }) => {
+        if (this.options.success) {
+          return this.options.success(data);
         }
-        };
-      })(this)
       });
-  // Fetch the data through ajax if the data is a string
   };
 
   return GitLabDropdownRemote;

app/assets/javascripts/graphs/graphs_show.js

+import flash from '../flash';
+import { __ } from '../locale';
+import axios from '../lib/utils/axios_utils';
 import ContributorsStatGraph from './stat_graph_contributors';
 
 document.addEventListener('DOMContentLoaded', () => {
-  $.ajax({
-    type: 'GET',
-    url: document.querySelector('.js-graphs-show').dataset.projectGraphPath,
-    dataType: 'json',
-    success(data) {
+  const url = document.querySelector('.js-graphs-show').dataset.projectGraphPath;
+
+  axios.get(url)
+    .then(({ data }) => {
       const graph = new ContributorsStatGraph();
       graph.init(data);
 
@@ -16,6 +18,6 @@ document.addEventListener('DOMContentLoaded', () => {
 
       $('.stat-graph').fadeIn();
       $('.loading-graph').hide();
-    },
-  });
+    })
+    .catch(() => flash(__('Error fetching contributors data.')));
 });

app/assets/javascripts/group_label_subscription.js

+import axios from './lib/utils/axios_utils';
+import flash from './flash';
+import { __ } from './locale';
+
 export default class GroupLabelSubscription {
   constructor(container) {
     const $container = $(container);
@@ -13,14 +17,12 @@ export default class GroupLabelSubscription {
     event.preventDefault();
 
     const url = this.$unsubscribeButtons.attr('data-url');
-
-    $.ajax({
-      type: 'POST',
-      url,
-    }).done(() => {
+    axios.post(url)
+      .then(() => {
         this.toggleSubscriptionButtons();
         this.$unsubscribeButtons.removeAttr('data-url');
-    });
+      })
+      .catch(() => flash(__('There was an error when unsubscribing from this label.')));
   }
 
   subscribe(event) {
@@ -31,12 +33,9 @@ export default class GroupLabelSubscription {
 
     this.$unsubscribeButtons.attr('data-url', url);
 
-    $.ajax({
-      type: 'POST',
-      url,
-    }).done(() => {
-      this.toggleSubscriptionButtons();
-    });
+    axios.post(url)
+      .then(() => this.toggleSubscriptionButtons())
+      .catch(() => flash(__('There was an error when subscribing to this label.')));
   }
 
   toggleSubscriptionButtons() {

app/assets/javascripts/ide/stores/actions.js

@@ -71,7 +71,7 @@ export const setResizingStatus = ({ commit }, resizing) => {
 export const checkCommitStatus = ({ state }) =>
   service
     .getBranchData(state.currentProjectId, state.currentBranchId)
-    .then((data) => {
+    .then(({ data }) => {
       const { id } = data.commit;
       const selectedBranch =
         state.projects[state.currentProjectId].branches[state.currentBranchId];
@@ -90,7 +90,7 @@ export const commitChanges = (
 ) =>
   service
     .commit(state.currentProjectId, payload)
-    .then((data) => {
+    .then(({ data }) => {
       const { branch } = payload;
       if (!data.short_id) {
         flash(data.message, 'alert', document, null, false, true);
@@ -147,8 +147,8 @@ export const commitChanges = (
     })
     .catch((err) => {
       let errMsg = 'Error committing changes. Please try again.';
-      if (err.responseJSON && err.responseJSON.message) {
-        errMsg += ` (${stripHtml(err.responseJSON.message)})`;
+      if (err.response.data && err.response.data.message) {
+        errMsg += ` (${stripHtml(err.response.data.message)})`;
       }
       flash(errMsg, 'alert', document, null, false, true);
       window.dispatchEvent(new Event('resize'));

app/assets/javascripts/ide/stores/actions/branch.js

@@ -10,7 +10,7 @@ export const getBranchData = (
         !state.projects[`${projectId}`].branches[branchId])
         || force) {
     service.getBranchData(`${projectId}`, branchId)
-      .then((data) => {
+      .then(({ data }) => {
         const { id } = data.commit;
         commit(types.SET_BRANCH, { projectPath: `${projectId}`, branchName: branchId, branch: data });
         commit(types.SET_BRANCH_WORKING_REFERENCE, { projectId, branchId, reference: id });

app/assets/javascripts/integrations/integration_settings_form.js

-import Flash from '../flash';
+import axios from '../lib/utils/axios_utils';
+import flash from '../flash';
 
 export default class IntegrationSettingsForm {
   constructor(formSelector) {
@@ -95,14 +96,11 @@ export default class IntegrationSettingsForm {
    */
   testSettings(formData) {
     this.toggleSubmitBtnState(true);
-    $.ajax({
-      type: 'PUT',
-      url: this.testEndPoint,
-      data: formData,
-    })
-    .done((res) => {
-      if (res.error) {
-        new Flash(`${res.message} ${res.service_response}`, 'alert', document, {
+
+    return axios.put(this.testEndPoint, formData)
+      .then(({ data }) => {
+        if (data.error) {
+          flash(`${data.message} ${data.service_response}`, 'alert', document, {
             title: 'Save anyway',
             clickHandler: (e) => {
               e.preventDefault();
@@ -112,11 +110,11 @@ export default class IntegrationSettingsForm {
         } else {
           this.$form.submit();
         }
+
+        this.toggleSubmitBtnState(false);
       })
-    .fail(() => {
-      new Flash('Something went wrong on our end.');
-    })
-    .always(() => {
+      .catch(() => {
+        flash('Something went wrong on our end.');
         this.toggleSubmitBtnState(false);
       });
   }

app/assets/javascripts/issuable_bulk_update_actions.js

 /* eslint-disable comma-dangle, quotes, consistent-return, func-names, array-callback-return, space-before-function-paren, prefer-arrow-callback, max-len, no-unused-expressions, no-sequences, no-underscore-dangle, no-unused-vars, no-param-reassign */
 import _ from 'underscore';
+import axios from './lib/utils/axios_utils';
 import Flash from './flash';
 
 export default {
@@ -22,15 +23,9 @@ export default {
   },
 
   submit() {
-    const _this = this;
-    const xhr = $.ajax({
-      url: this.form.attr('action'),
-      method: this.form.attr('method'),
-      dataType: 'JSON',
-      data: this.getFormDataAsObject()
-    });
-    xhr.done(() => window.location.reload());
-    xhr.fail(() => this.onFormSubmitFailure());
+    axios[this.form.attr('method')](this.form.attr('action'), this.getFormDataAsObject())
+      .then(() => window.location.reload())
+      .catch(() => this.onFormSubmitFailure());
   },
 
   onFormSubmitFailure() {

app/assets/javascripts/issuable_index.js

+import axios from './lib/utils/axios_utils';
+import flash from './flash';
+import { __ } from './locale';
 import IssuableBulkUpdateSidebar from './issuable_bulk_update_sidebar';
 import IssuableBulkUpdateActions from './issuable_bulk_update_actions';
 
@@ -20,22 +23,23 @@ export default class IssuableIndex {
   }
 
   static resetIncomingEmailToken() {
-    $('.incoming-email-token-reset').on('click', (e) => {
+    const $resetToken = $('.incoming-email-token-reset');
+
+    $resetToken.on('click', (e) => {
       e.preventDefault();
 
-      $.ajax({
-        type: 'PUT',
-        url: $('.incoming-email-token-reset').attr('href'),
-        dataType: 'json',
-        success(response) {
-          $('#issuable_email').val(response.new_address).focus();
-        },
-        beforeSend() {
-          $('.incoming-email-token-reset').text('resetting...');
-        },
-        complete() {
-          $('.incoming-email-token-reset').text('reset it');
-        },
+      $resetToken.text('resetting...');
+
+      axios.put($resetToken.attr('href'))
+        .then(({ data }) => {
+          $('#issuable_email').val(data.new_address).focus();
+
+          $resetToken.text('reset it');
+        })
+        .catch(() => {
+          flash(__('There was an error when reseting email token.'));
+
+          $resetToken.text('reset it');
         });
     });
   }

app/assets/javascripts/lib/utils/common_utils.js

 import axios from './axios_utils';
 import { getLocationHash } from './url_utility';
+import axios from './axios_utils';
 
 export const getPagePath = (index = 0) => $('body').attr('data-page').split(':')[index];
 
@@ -380,22 +381,16 @@ export const resetFavicon = () => {
   }
 };
 
-export const setCiStatusFavicon = (pageUrl) => {
-  $.ajax({
-    url: pageUrl,
-    dataType: 'json',
-    success: (data) => {
+export const setCiStatusFavicon = pageUrl =>
+  axios.get(pageUrl)
+    .then(({ data }) => {
       if (data && data.favicon) {
         setFavicon(data.favicon);
       } else {
         resetFavicon();
       }
-    },
-    error: () => {
-      resetFavicon();
-    },
-  });
-};
+    })
+    .catch(resetFavicon);
 
 export const spriteIcon = (icon, className = '') => {
   const classAttribute = className.length > 0 ? `class="${className}"` : '';

app/assets/javascripts/lib/utils/users_cache.js

@@ -8,16 +8,16 @@ class UsersCache extends Cache {
     }
 
     return Api.users('', { username })
-      .then((users) => {
-        if (!users.length) {
+      .then(({ data }) => {
+        if (!data.length) {
           throw new Error(`User "${username}" could not be found!`);
         }
 
-        if (users.length > 1) {
+        if (data.length > 1) {
           throw new Error(`Expected username "${username}" to be unique!`);
         }
 
-        const user = users[0];
+        const user = data[0];
         this.internalStorage[username] = user;
         return user;
       });

app/assets/javascripts/users/activity_calendar.js

@@ -98,7 +98,7 @@ export default class ActivityCalendar {
     const secondLastColMonth = this.timestampsTmp[group - 2][0].date.getMonth();
 
     if (lastColMonth !== secondLastColMonth) {
-      extraWidthPadding = 3;
+      extraWidthPadding = 6;
     }
 
     return extraWidthPadding;

app/controllers/admin/gitaly_servers_controller.rb

+class Admin::GitalyServersController < Admin::ApplicationController
+  def index
+    @gitaly_servers = Gitaly::Server.all
+  end
+end

app/controllers/concerns/issuable_collections.rb

@@ -13,10 +13,8 @@ module IssuableCollections
   # rubocop:disable Gitlab/ModuleWithInstanceVariables
   def set_issuables_index
     @issuables = issuables_collection
-    @issuables          = @issuables.page(params[:page])
-    @issuable_meta_data = issuable_meta_data(@issuables, collection_type)
-    @total_pages        = issuable_page_count
 
+    set_pagination
     return if redirect_out_of_range(@total_pages)
 
     if params[:label_name].present?
@@ -35,14 +33,26 @@ module IssuableCollections
       @users.push(author) if author
     end
   end
+
+  def set_pagination
+    return if pagination_disabled?
+
+    @issuables          = @issuables.page(params[:page])
+    @issuable_meta_data = issuable_meta_data(@issuables, collection_type)
+    @total_pages        = issuable_page_count
+  end
   # rubocop:enable Gitlab/ModuleWithInstanceVariables
 
+  def pagination_disabled?
+    false
+  end
+
   def issuables_collection
     finder.execute.preload(preload_for_collection)
   end
 
   def redirect_out_of_range(total_pages)
-    return false if total_pages.zero?
+    return false if total_pages.nil? || total_pages.zero?
 
     out_of_range = @issuables.current_page > total_pages # rubocop:disable Gitlab/ModuleWithInstanceVariables
 

app/controllers/groups_controller.rb

@@ -150,7 +150,6 @@ class GroupsController < Groups::ApplicationController
     @projects = GroupProjectsFinder.new(params: params, group: group, options: options, current_user: current_user)
                   .execute
                   .includes(:namespace)
-                  .page(params[:page])
 
     @events = EventCollection
       .new(@projects, offset: params[:offset].to_i, filter: event_filter)

app/models/concerns/discussion_on_diff.rb

@@ -37,6 +37,8 @@ module DiscussionOnDiff
 
   # Returns an array of at most 16 highlighted lines above a diff note
   def truncated_diff_lines(highlight: true)
+    return [] if diff_line.nil? && first_note.is_a?(LegacyDiffNote)
+
     lines = highlight ? highlighted_diff_lines : diff_lines
 
     initial_line_index = [diff_line.index - NUMBER_OF_TRUNCATED_DIFF_LINES + 1, 0].max

app/models/merge_request.rb

@@ -618,12 +618,12 @@ class MergeRequest < ActiveRecord::Base
     can_be_merged? && !should_be_rebased?
   end
 
-  def mergeable_state?(skip_ci_check: false)
+  def mergeable_state?(skip_ci_check: false, skip_discussions_check: false)
     return false unless open?
     return false if work_in_progress?
     return false if broken?
     return false unless skip_ci_check || mergeable_ci_state?
-    return false unless mergeable_discussions_state?
+    return false unless skip_discussions_check || mergeable_discussions_state?
 
     true
   end

app/models/project_wiki.rb

@@ -124,6 +124,12 @@ class ProjectWiki
     update_project_activity
   end
 
+  def page_formatted_data(page)
+    page_title, page_dir = page_title_and_dir(page.title)
+
+    wiki.page_formatted_data(title: page_title, dir: page_dir, version: page.version)
+  end
+
   def page_title_and_dir(title)
     title_array = title.split("/")
     title = title_array.pop

app/models/repository.rb

@@ -255,6 +255,8 @@ class Repository
 
     # This will still fail if the file is corrupted (e.g. 0 bytes)
     raw_repository.write_ref(keep_around_ref_name(sha), sha, shell: false)
+  rescue Gitlab::Git::CommandError => ex
+    Rails.logger.error "Unable to create keep-around reference for repository #{path}: #{ex}"
   end
 
   def kept_around?(sha)
@@ -491,7 +493,7 @@ class Repository
       raw_repository.root_ref
     else
       # When the repo does not exist we raise this error so no data is cached.
-      raise Rugged::ReferenceError
+      raise Gitlab::Git::Repository::NoRepository
     end
   end
   cache_method :root_ref
@@ -525,11 +527,7 @@ class Repository
   def commit_count_for_ref(ref)
     return 0 unless exists?
 
-    begin
     cache.fetch(:"commit_count_#{ref}") { raw_repository.commit_count(ref) }
-    rescue Rugged::ReferenceError
-      0
-    end
   end
 
   delegate :branch_names, to: :raw_repository
@@ -653,26 +651,14 @@ class Repository
   end
 
   def last_commit_for_path(sha, path)
-    raw_repository.gitaly_migrate(:last_commit_for_path) do |is_enabled|
-      if is_enabled
-        last_commit_for_path_by_gitaly(sha, path)
-      else
-        last_commit_for_path_by_rugged(sha, path)
-      end
-    end
+    commit_by(oid: last_commit_id_for_path(sha, path))
   end
 
   def last_commit_id_for_path(sha, path)
     key = path.blank? ? "last_commit_id_for_path:#{sha}" : "last_commit_id_for_path:#{sha}:#{Digest::SHA1.hexdigest(path)}"
 
     cache.fetch(key) do
-      raw_repository.gitaly_migrate(:last_commit_for_path) do |is_enabled|
-        if is_enabled
-          last_commit_for_path_by_gitaly(sha, path).id
-        else
-          last_commit_id_for_path_by_shelling_out(sha, path)
-        end
-      end
+      raw_repository.last_commit_id_for_path(sha, path)
     end
   end
 
@@ -800,16 +786,6 @@ class Repository
     with_cache_hooks { raw.multi_action(user, **options) }
   end
 
-  def can_be_merged?(source_sha, target_branch)
-    raw_repository.gitaly_migrate(:can_be_merged) do |is_enabled|
-      if is_enabled
-        gitaly_can_be_merged?(source_sha, find_branch(target_branch).target)
-      else
-        rugged_can_be_merged?(source_sha, target_branch)
-      end
-    end
-  end
-
   def merge(user, source_sha, merge_request, message)
     with_cache_hooks do
       raw_repository.merge(user, source_sha, merge_request.target_branch, message) do |commit_id|
@@ -876,26 +852,18 @@ class Repository
     @root_ref_sha ||= commit(root_ref).sha
   end
 
-  delegate :merged_branch_names, to: :raw_repository
+  delegate :merged_branch_names, :can_be_merged?, to: :raw_repository
 
   def merge_base(first_commit_id, second_commit_id)
     first_commit_id = commit(first_commit_id).try(:id) || first_commit_id
     second_commit_id = commit(second_commit_id).try(:id) || second_commit_id
     raw_repository.merge_base(first_commit_id, second_commit_id)
-  rescue Rugged::ReferenceError
-    nil
   end
 
   def ancestor?(ancestor_id, descendant_id)
     return false if ancestor_id.nil? || descendant_id.nil?
 
-    Gitlab::GitalyClient.migrate(:is_ancestor) do |is_enabled|
-      if is_enabled
     raw_repository.ancestor?(ancestor_id, descendant_id)
-      else
-        rugged_is_ancestor?(ancestor_id, descendant_id)
-      end
-    end
   end
 
   def fetch_as_mirror(url, forced: false, refmap: :all_refs, remote_name: nil)
@@ -983,7 +951,7 @@ class Repository
           end
 
         instance_variable_set(ivar, value)
-      rescue Rugged::ReferenceError, Gitlab::Git::Repository::NoRepository
+      rescue Gitlab::Git::Repository::NoRepository
         # Even if the above `#exists?` check passes these errors might still
         # occur (for example because of a non-existing HEAD). We want to
         # gracefully handle this and not cache anything
@@ -1077,30 +1045,7 @@ class Repository
     Gitlab::Metrics.add_event(event, { path: full_path }.merge(tags))
   end
 
-  def last_commit_for_path_by_gitaly(sha, path)
-    c = raw_repository.gitaly_commit_client.last_commit_for_path(sha, path)
-    commit_by(oid: c)
-  end
-
-  def last_commit_for_path_by_rugged(sha, path)
-    sha = last_commit_id_for_path_by_shelling_out(sha, path)
-    commit_by(oid: sha)
-  end
-
-  def last_commit_id_for_path_by_shelling_out(sha, path)
-    args = %W(rev-list --max-count=1 #{sha} -- #{path})
-    raw_repository.run_git_with_timeout(args, Gitlab::Git::Popen::FAST_GIT_PROCESS_TIMEOUT).first.strip
-  end
-
   def initialize_raw_repository
     Gitlab::Git::Repository.new(project.repository_storage, disk_path + '.git', Gitlab::GlRepository.gl_repository(project, is_wiki))
   end
-
-  def gitaly_can_be_merged?(their_commit, our_commit)
-    !raw_repository.gitaly_conflicts_client(our_commit, their_commit).conflicts?
-  end
-
-  def rugged_can_be_merged?(their_commit, our_commit)
-    !rugged.merge_commits(our_commit, their_commit).conflicts?
-  end
 end

app/models/wiki_page.rb

@@ -107,7 +107,10 @@ class WikiPage
 
   # The processed/formatted content of this page.
   def formatted_content
-    @attributes[:formatted_content] ||= @page&.formatted_data
+    # Assuming @page exists, nil formatted_data means we didn't load it
+    # before hand (i.e. page was fetched by Gitaly), so we fetch it separately.
+    # If the page was fetched by Gollum, formatted_data would've been a String.
+    @attributes[:formatted_content] ||= @page&.formatted_data || @wiki.page_formatted_data(@page)
   end
 
   # The markup format for the page.

app/serializers/merge_request_widget_entity.rb

@@ -48,7 +48,18 @@ class MergeRequestWidgetEntity < IssuableEntity
   expose :merge_ongoing?, as: :merge_ongoing
   expose :work_in_progress?, as: :work_in_progress
   expose :source_branch_exists?, as: :source_branch_exists
-  expose :mergeable_discussions_state?, as: :mergeable_discussions_state
+
+  expose :mergeable_discussions_state?, as: :mergeable_discussions_state do |merge_request|
+    # This avoids calling MergeRequest#mergeable_discussions_state without
+    # considering the state of the MR first. If a MR isn't mergeable, we can
+    # safely short-circuit it.
+    if merge_request.mergeable_state?(skip_ci_check: true, skip_discussions_check: true)
+      merge_request.mergeable_discussions_state?
+    else
+      false
+    end
+  end
+
   expose :branch_missing?, as: :branch_missing
   expose :commits_count
   expose :cannot_be_merged?, as: :has_conflicts

app/views/admin/dashboard/index.html.haml

@@ -138,19 +138,11 @@
               GitLab API
               %span.pull-right
                 = API::API::version
-            %p
-              Gitaly
-              %span.pull-right
-                = Gitlab::GitalyClient.expected_server_version
             - if Gitlab.config.pages.enabled
               %p
                 GitLab Pages
                 %span.pull-right
                   = Gitlab::Pages::VERSION
-            %p
-              Git
-              %span.pull-right
-                = Gitlab::Git.version
             %p
               Ruby
               %span.pull-right
@@ -163,6 +155,8 @@
               = Gitlab::Database.adapter_name
               %span.pull-right
                 = Gitlab::Database.version
+            %p
+              = link_to "Gitaly Servers", admin_gitaly_servers_path
     .row
       .col-md-4
         .info-well

app/views/admin/gitaly_servers/index.html.haml

+- breadcrumb_title _("Gitaly Servers")
+
+%h3.page-title= _("Gitaly Servers")
+%hr
+.gitaly_servers
+  - if @gitaly_servers.any?
+    .table-holder
+      %table.table.responsive-table
+        %thead.hidden-sm.hidden-xs
+          %tr
+            %th= _("Storage")
+            %th= n_("Gitaly|Address")
+            %th= _("Server version")
+            %th= _("Git version")
+            %th= _("Up to date")
+        - @gitaly_servers.each do |server|
+          %tr
+            %td
+              = server.storage
+            %td
+              = server.address
+            %td
+              = server.server_version
+            %td
+              = server.git_binary_version
+            %td
+              = boolean_to_icon(server.up_to_date?)
+  - else
+    .empty-state
+      .text-center
+        %h4= _("No connection could be made to a Gitaly Server, please check your logs!")

app/views/layouts/header/_new_dropdown.haml

 %li.header-new.dropdown
-  = link_to new_project_path, class: "header-new-dropdown-toggle has-tooltip", title: "New...", ref: 'tooltip', aria: { label: "New..." }, data: { toggle: 'dropdown', placement: 'bottom', container: 'body' } do
+  = link_to new_project_path, class: "header-new-dropdown-toggle has-tooltip qa-new-menu-toggle", title: "New...", ref: 'tooltip', aria: { label: "New..." }, data: { toggle: 'dropdown', placement: 'bottom', container: 'body' } do
     = sprite_icon('plus-square', size: 16)
     = sprite_icon('angle-down', css_class: 'caret-down')
   .dropdown-menu-nav.dropdown-menu-align-right

changelogs/unreleased/21554-mark-new-user-as-external.yml

+---
+title: Login via OAuth now only marks new users as external
+merge_request: 16672
+author:
+type: fixed

changelogs/unreleased/41771-reduce-cardinality-of-metrics.yml

+---
+title: Reduce the number of Prometheus metrics
+merge_request: 16443
+author:
+type: performance

changelogs/unreleased/42160-error-500-loading-merge-request-undefined-method-index-for-nil-nilclass.yml

+---
+title: Fix 500 error when loading a merge request with an invalid comment
+merge_request: 16795
+author:
+type: fixed

changelogs/unreleased/42591-update-nokogiri.yml

+---
+title: Update nokogiri to 1.8.2
+merge_request: 16807
+author:
+type: security

changelogs/unreleased/contribution_calendar_label_cut_off.yml

+---
+title: Contribution calendar label was cut off
+merge_request:
+author: Branka Martinovic
+type: fixed

changelogs/unreleased/osw-short-circuit-mergeable-disccusions-state.yml

+---
+title: Stop checking if discussions are in a mergeable state if the MR isn't
+merge_request:
+author:
+type: performance

changelogs/unreleased/sh-fix-events-collection.yml

+---
+title: Fix not all events being shown in group dashboard
+merge_request:
+author:
+type: fixed

changelogs/unreleased/sh-fix-project-members-api-perf.yml

+---
+title: Remove N+1 queries with /projects/:project_id/{access_requests,members} API
+  endpoints
+merge_request:
+author:
+type: performance

changelogs/unreleased/zj-gitaly-server-info.yml

+---
+title: Add Gitaly Servers admin dashboard
+merge_request:
+author:
+type: added

config/initializers/ar5_pg_10_support.rb

 raise "Vendored ActiveRecord 5 code! Delete #{__FILE__}!" if ActiveRecord::VERSION::MAJOR >= 5
 
-require 'active_record/connection_adapters/postgresql_adapter'
-require 'active_record/connection_adapters/postgresql/schema_statements'
-
-#
-# Monkey-patch the refused Rails 4.2 patch at https://github.com/rails/rails/pull/31330
-#
-# Updates sequence logic to support PostgreSQL 10.
-#
-# rubocop:disable all
-module ActiveRecord
+if Gitlab::Database.postgresql?
+  require 'active_record/connection_adapters/postgresql_adapter'
+  require 'active_record/connection_adapters/postgresql/schema_statements'
+
+  #
+  # Monkey-patch the refused Rails 4.2 patch at https://github.com/rails/rails/pull/31330
+  #
+  # Updates sequence logic to support PostgreSQL 10.
+  #
+  # rubocop:disable all
+  module ActiveRecord
     module ConnectionAdapters
 
       # We need #postgresql_version to be public as in ActiveRecord 5 for seed_fu
@@ -53,5 +54,6 @@ module ActiveRecord
         end
       end
     end
+  end
+  # rubocop:enable all
 end
-# rubocop:enable all

config/initializers/peek.rb

@@ -7,10 +7,12 @@ if Gitlab::Database.mysql?
   require 'peek-mysql2'
   PEEK_DB_CLIENT = ::Mysql2::Client
   PEEK_DB_VIEW = Peek::Views::Mysql2
-else
+elsif Gitlab::Database.postgresql?
   require 'peek-pg'
   PEEK_DB_CLIENT = ::PG::Connection
   PEEK_DB_VIEW = Peek::Views::PG
+else
+  raise "Unsupported database adapter for peek!"
 end
 
 Peek.into PEEK_DB_VIEW

config/routes/admin.rb

@@ -24,6 +24,8 @@ namespace :admin do
   resource :impersonation, only: :destroy
 
   resources :abuse_reports, only: [:index, :destroy]
+  resources :gitaly_servers, only: [:index]
+
   resources :spam_logs, only: [:index, :destroy] do
     member do
       post :mark_as_ham

doc/api/repositories.md

@@ -114,6 +114,7 @@ Parameters:
 
 - `id` (required) - The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) owned by the authenticated user
 - `sha` (optional) - The commit SHA to download. A tag, branch reference or sha can be used. This defaults to the tip of the default branch if not specified
+- `format` (optional) - The archive format. Default is `tar.gz`. Options are `tar.gz`, `tar.bz2`, `tbz`, `tbz2`, `tb2`, `bz2`, `tar`, `zip`
 
 ## Compare branches, tags or commits
 

lib/api/access_requests.rb

@@ -24,7 +24,7 @@ module API
           access_requesters = AccessRequestsFinder.new(source).execute!(current_user)
           access_requesters = paginate(access_requesters.includes(:user))
 
-          present access_requesters.map(&:user), with: Entities::AccessRequester, source: source
+          present access_requesters, with: Entities::AccessRequester
         end
 
         desc "Requests access for the authenticated user to a #{source_type}." do
@@ -36,7 +36,7 @@ module API
           access_requester = source.request_access(current_user)
 
           if access_requester.persisted?
-            present access_requester.user, with: Entities::AccessRequester, access_requester: access_requester
+            present access_requester, with: Entities::AccessRequester
           else
             render_validation_error!(access_requester)
           end
@@ -56,7 +56,7 @@ module API
           member = ::Members::ApproveAccessRequestService.new(source, current_user, declared_params).execute
 
           status :created
-          present member.user, with: Entities::Member, member: member
+          present member, with: Entities::Member
         end
 
         desc 'Denies an access request for the given user.' do

lib/api/entities.rb

@@ -205,22 +205,15 @@ module API
       expose :build_artifacts_size, as: :job_artifacts_size
     end
 
-    class Member < UserBasic
-      expose :access_level do |user, options|
-        member = options[:member] || options[:source].members.find_by(user_id: user.id)
-        member.access_level
-      end
-      expose :expires_at do |user, options|
-        member = options[:member] || options[:source].members.find_by(user_id: user.id)
-        member.expires_at
-      end
+    class Member < Grape::Entity
+      expose :user, merge: true, using: UserBasic
+      expose :access_level
+      expose :expires_at
     end
 
-    class AccessRequester < UserBasic
-      expose :requested_at do |user, options|
-        access_requester = options[:access_requester] || options[:source].requesters.find_by(user_id: user.id)
-        access_requester.requested_at
-      end
+    class AccessRequester < Grape::Entity
+      expose :user, merge: true, using: UserBasic
+      expose :requested_at
     end
 
     class Group < Grape::Entity

lib/api/members.rb

@@ -21,10 +21,11 @@ module API
         get ":id/members" do
           source = find_source(source_type, params[:id])
 
-          users = source.users
-          users = users.merge(User.search(params[:query])) if params[:query].present?
+          members = source.members.where.not(user_id: nil).includes(:user)
+          members = members.joins(:user).merge(User.search(params[:query])) if params[:query].present?
+          members = paginate(members)
 
-          present paginate(users), with: Entities::Member, source: source
+          present members, with: Entities::Member
         end
 
         desc 'Gets a member of a group or project.' do
@@ -39,7 +40,7 @@ module API
           members = source.members
           member = members.find_by!(user_id: params[:user_id])
 
-          present member.user, with: Entities::Member, member: member
+          present member, with: Entities::Member
         end
 
         desc 'Adds a member to a group or project.' do
@@ -62,7 +63,7 @@ module API
           if !member
             not_allowed! # This currently can only be reached in EE
           elsif member.persisted? && member.valid?
-            present member.user, with: Entities::Member, member: member
+            present member, with: Entities::Member
           else
             render_validation_error!(member)
           end
@@ -83,7 +84,7 @@ module API
           member = source.members.find_by!(user_id: params.delete(:user_id))
 
           if member.update_attributes(declared_params(include_missing: false))
-            present member.user, with: Entities::Member, member: member
+            present member, with: Entities::Member
           else
             render_validation_error!(member)
           end

lib/api/v3/members.rb

@@ -22,10 +22,11 @@ module API
           get ":id/members" do
             source = find_source(source_type, params[:id])
 
-            users = source.users
-            users = users.merge(User.search(params[:query])) if params[:query].present?
+            members = source.members.where.not(user_id: nil).includes(:user)
+            members = members.joins(:user).merge(User.search(params[:query])) if params[:query].present?
+            members = paginate(members)
 
-            present paginate(users), with: ::API::Entities::Member, source: source
+            present members, with: ::API::Entities::Member
           end
 
           desc 'Gets a member of a group or project.' do
@@ -40,7 +41,7 @@ module API
             members = source.members
             member = members.find_by!(user_id: params[:user_id])
 
-            present member.user, with: ::API::Entities::Member, member: member
+            present member, with: ::API::Entities::Member
           end
 
           desc 'Adds a member to a group or project.' do
@@ -69,7 +70,7 @@ module API
             end
 
             if member.persisted? && member.valid?
-              present member.user, with: ::API::Entities::Member, member: member
+              present member, with: ::API::Entities::Member
             else
               # This is to ensure back-compatibility but 400 behavior should be used
               # for all validation errors in 9.0!
@@ -93,7 +94,7 @@ module API
             member = source.members.find_by!(user_id: params.delete(:user_id))
 
             if member.update_attributes(declared_params(include_missing: false))
-              present member.user, with: ::API::Entities::Member, member: member
+              present member, with: ::API::Entities::Member
             else
               # This is to ensure back-compatibility but 400 behavior should be used
               # for all validation errors in 9.0!
@@ -125,7 +126,7 @@ module API
             else
               ::Members::DestroyService.new(source, current_user, declared_params).execute
 
-              present member.user, with: ::API::Entities::Member, member: member
+              present member, with: ::API::Entities::Member
             end
           end
         end

lib/gitaly/server.rb

+module Gitaly
+  class Server
+    def self.all
+      Gitlab.config.repositories.storages.keys.map { |s| Gitaly::Server.new(s) }
+    end
+
+    attr_reader :storage
+
+    def initialize(storage)
+      @storage = storage
+    end
+
+    def server_version
+      info.server_version
+    end
+
+    def git_binary_version
+      info.git_version
+    end
+
+    def up_to_date?
+      server_version == Gitlab::GitalyClient.expected_server_version
+    end
+
+    def address
+      Gitlab::GitalyClient.address(@storage)
+    rescue RuntimeError => e
+      "Error getting the address: #{e.message}"
+    end
+
+    private
+
+    def info
+      @info ||=
+        begin
+          Gitlab::GitalyClient::ServerService.new(@storage).info
+        rescue GRPC::Unavailable, GRPC::GRPC::DeadlineExceeded
+          # This will show the server as being out of date
+          Gitaly::ServerInfoResponse.new(git_version: '', server_version: '')
+        end
+    end
+  end
+end

lib/gitlab/ee_compat_check.rb

@@ -5,7 +5,7 @@ module Gitlab
     DEFAULT_CE_PROJECT_URL = 'https://gitlab.com/gitlab-org/gitlab-ce'.freeze
     EE_REPO_URL = 'https://gitlab.com/gitlab-org/gitlab-ee.git'.freeze
     CHECK_DIR = Rails.root.join('ee_compat_check')
-    IGNORED_FILES_REGEX = /(VERSION|CHANGELOG\.md:\d+)/.freeze
+    IGNORED_FILES_REGEX = %r{VERSION|CHANGELOG\.md|db/schema\.rb}i.freeze
     PLEASE_READ_THIS_BANNER = %Q{
       ============================================================
       ===================== PLEASE READ THIS =====================

lib/gitlab/git/diff.rb

@@ -44,7 +44,7 @@ module Gitlab
                             # branch1...branch2) From the git documentation:
                             # "git diff A...B" is equivalent to "git diff
                             # $(git-merge-base A B) B"
-                            repo.merge_base_commit(head, base)
+                            repo.merge_base(head, base)
                           end
 
           options ||= {}

lib/gitlab/git/operation_service.rb

@@ -131,7 +131,10 @@ module Gitlab
 
         oldrev = branch.target
 
-        if oldrev == repository.merge_base(newrev, branch.target)
+        merge_base = repository.merge_base(newrev, branch.target)
+        raise Gitlab::Git::Repository::InvalidRef unless merge_base
+
+        if oldrev == merge_base
           oldrev
         else
           raise Gitlab::Git::CommitError.new('Branch diverged')

lib/gitlab/git/repository.rb

@@ -551,29 +551,34 @@ module Gitlab
       end
 
       # Returns the SHA of the most recent common ancestor of +from+ and +to+
-      def merge_base_commit(from, to)
+      def merge_base(from, to)
         gitaly_migrate(:merge_base) do |is_enabled|
           if is_enabled
             gitaly_repository_client.find_merge_base(from, to)
           else
-            rugged.merge_base(from, to)
+            rugged_merge_base(from, to)
           end
         end
       end
-      alias_method :merge_base, :merge_base_commit
 
       # Gitaly note: JV: check gitlab-ee before removing this method.
       def rugged_is_ancestor?(ancestor_id, descendant_id)
         return false if ancestor_id.nil? || descendant_id.nil?
 
-        merge_base_commit(ancestor_id, descendant_id) == ancestor_id
+        rugged_merge_base(ancestor_id, descendant_id) == ancestor_id
       rescue Rugged::OdbError
         false
       end
 
       # Returns true is +from+ is direct ancestor to +to+, otherwise false
       def ancestor?(from, to)
+        Gitlab::GitalyClient.migrate(:is_ancestor) do |is_enabled|
+          if is_enabled
             gitaly_commit_client.ancestor?(from, to)
+          else
+            rugged_is_ancestor?(from, to)
+          end
+        end
       end
 
       def merged_branch_names(branch_names = [])
@@ -680,11 +685,7 @@ module Gitlab
           if is_enabled
             gitaly_commit_client.commit_count(ref)
           else
-            walker = Rugged::Walker.new(rugged)
-            walker.sorting(Rugged::SORT_TOPO | Rugged::SORT_REVERSE)
-            oid = rugged.rev_parse_oid(ref)
-            walker.push(oid)
-            walker.count
+            rugged_commit_count(ref)
           end
         end
       end
@@ -887,16 +888,12 @@ module Gitlab
       end
 
       def delete_refs(*ref_names)
-        instructions = ref_names.map do |ref|
-          "delete #{ref}\x00\x00"
-        end
-
-        message, status = run_git(%w[update-ref --stdin -z]) do |stdin|
-          stdin.write(instructions.join)
+        gitaly_migrate(:delete_refs) do |is_enabled|
+          if is_enabled
+            gitaly_delete_refs(*ref_names)
+          else
+            git_delete_refs(*ref_names)
           end
-
-        unless status.zero?
-          raise GitError.new("Could not delete refs #{ref_names}: #{message}")
         end
       end
 
@@ -1105,10 +1102,14 @@ module Gitlab
       end
 
       def write_ref(ref_path, ref, old_ref: nil, shell: true)
-        if shell
-          shell_write_ref(ref_path, ref, old_ref)
+        ref_path = "#{Gitlab::Git::BRANCH_REF_PREFIX}#{ref_path}" unless ref_path.start_with?("refs/") || ref_path == "HEAD"
+
+        gitaly_migrate(:write_ref) do |is_enabled|
+          if is_enabled
+            gitaly_repository_client.write_ref(ref_path, ref, old_ref, shell)
           else
-          rugged_write_ref(ref_path, ref)
+            local_write_ref(ref_path, ref, old_ref: old_ref, shell: shell)
+          end
         end
       end
 
@@ -1130,13 +1131,6 @@ module Gitlab
         target_ref
       end
 
-      # Refactoring aid; allows us to copy code from app/models/repository.rb
-      def run_git_with_timeout(args, timeout, env: {})
-        circuit_breaker.perform do
-          popen_with_timeout([Gitlab.config.git.bin_path, *args], timeout, path, env)
-        end
-      end
-
       # Refactoring aid; allows us to copy code from app/models/repository.rb
       def commit(ref = 'HEAD')
         Gitlab::Git::Commit.find(self, ref)
@@ -1392,6 +1386,16 @@ module Gitlab
         run_git(args).first.scrub.split(/^--$/)
       end
 
+      def can_be_merged?(source_sha, target_branch)
+        gitaly_migrate(:can_be_merged) do |is_enabled|
+          if is_enabled
+            gitaly_can_be_merged?(source_sha, find_branch(target_branch, true).target)
+          else
+            rugged_can_be_merged?(source_sha, target_branch)
+          end
+        end
+      end
+
       def search_files_by_name(query, ref)
         safe_query = Regexp.escape(query.sub(/^\/*/, ""))
 
@@ -1417,8 +1421,36 @@ module Gitlab
         output
       end
 
+      def can_be_merged?(source_sha, target_branch)
+        gitaly_migrate(:can_be_merged) do |is_enabled|
+          if is_enabled
+            gitaly_can_be_merged?(source_sha, find_branch(target_branch).target)
+          else
+            rugged_can_be_merged?(source_sha, target_branch)
+          end
+        end
+      end
+
+      def last_commit_id_for_path(sha, path)
+        gitaly_migrate(:last_commit_for_path) do |is_enabled|
+          if is_enabled
+            last_commit_for_path_by_gitaly(sha, path).id
+          else
+            last_commit_id_for_path_by_shelling_out(sha, path)
+          end
+        end
+      end
+
       private
 
+      def local_write_ref(ref_path, ref, old_ref: nil, shell: true)
+        if shell
+          shell_write_ref(ref_path, ref, old_ref)
+        else
+          rugged_write_ref(ref_path, ref)
+        end
+      end
+
       def shell_write_ref(ref_path, ref, old_ref)
         raise ArgumentError, "invalid ref_path #{ref_path.inspect}" if ref_path.include?(' ')
         raise ArgumentError, "invalid ref #{ref.inspect}" if ref.include?("\x00")
@@ -1460,6 +1492,12 @@ module Gitlab
         output
       end
 
+      def run_git_with_timeout(args, timeout, env: {})
+        circuit_breaker.perform do
+          popen_with_timeout([Gitlab.config.git.bin_path, *args], timeout, path, env)
+        end
+      end
+
       def fresh_worktree?(path)
         File.exist?(path) && !clean_stuck_worktree(path)
       end
@@ -2160,7 +2198,7 @@ module Gitlab
 
           source_sha
         end
-      rescue Rugged::ReferenceError
+      rescue Rugged::ReferenceError, InvalidRef
         raise ArgumentError, 'Invalid merge source'
       end
 
@@ -2172,6 +2210,24 @@ module Gitlab
         remote_update(remote_name, url: url)
       end
 
+      def git_delete_refs(*ref_names)
+        instructions = ref_names.map do |ref|
+          "delete #{ref}\x00\x00"
+        end
+
+        message, status = run_git(%w[update-ref --stdin -z]) do |stdin|
+          stdin.write(instructions.join)
+        end
+
+        unless status.zero?
+          raise GitError.new("Could not delete refs #{ref_names}: #{message}")
+        end
+      end
+
+      def gitaly_delete_refs(*ref_names)
+        gitaly_ref_client.delete_refs(refs: ref_names)
+      end
+
       def rugged_remove_remote(remote_name)
         # When a remote is deleted all its remote refs are deleted too, but in
         # the case of mirrors we map its refs (that would usualy go under
@@ -2234,6 +2290,14 @@ module Gitlab
         run_git(['fetch', remote_name], env: env).last.zero?
       end
 
+      def gitaly_can_be_merged?(their_commit, our_commit)
+        !gitaly_conflicts_client(our_commit, their_commit).conflicts?
+      end
+
+      def rugged_can_be_merged?(their_commit, our_commit)
+        !rugged.merge_commits(our_commit, their_commit).conflicts?
+      end
+
       def gitlab_projects_error
         raise CommandError, @gitlab_projects.output
       end
@@ -2257,6 +2321,39 @@ module Gitlab
           .commits_by_message(query, revision: ref, path: path, limit: limit, offset: offset)
           .map { |c| commit(c) }
       end
+
+      def gitaly_can_be_merged?(their_commit, our_commit)
+        !gitaly_conflicts_client(our_commit, their_commit).conflicts?
+      end
+
+      def rugged_can_be_merged?(their_commit, our_commit)
+        !rugged.merge_commits(our_commit, their_commit).conflicts?
+      end
+
+      def last_commit_for_path_by_gitaly(sha, path)
+        gitaly_commit_client.last_commit_for_path(sha, path)
+      end
+
+      def last_commit_id_for_path_by_shelling_out(sha, path)
+        args = %W(rev-list --max-count=1 #{sha} -- #{path})
+        run_git_with_timeout(args, Gitlab::Git::Popen::FAST_GIT_PROCESS_TIMEOUT).first.strip
+      end
+
+      def rugged_merge_base(from, to)
+        rugged.merge_base(from, to)
+      rescue Rugged::ReferenceError
+        nil
+      end
+
+      def rugged_commit_count(ref)
+        walker = Rugged::Walker.new(rugged)
+        walker.sorting(Rugged::SORT_TOPO | Rugged::SORT_REVERSE)
+        oid = rugged.rev_parse_oid(ref)
+        walker.push(oid)
+        walker.count
+      rescue Rugged::ReferenceError
+        0
+      end
     end
   end
 end

lib/gitlab/git/tree.rb

@@ -83,6 +83,8 @@ module Gitlab
               commit_id: sha
             )
           end
+        rescue Rugged::ReferenceError
+          []
         end
       end
 

lib/gitlab/git/wiki.rb

@@ -117,6 +117,20 @@ module Gitlab
         page.url_path
       end
 
+      def page_formatted_data(title:, dir: nil, version: nil)
+        version = version&.id
+
+        @repository.gitaly_migrate(:wiki_page_formatted_data) do |is_enabled|
+          if is_enabled
+            gitaly_wiki_client.get_formatted_data(title: title, dir: dir, version: version)
+          else
+            # We don't use #page because if wiki_find_page feature is enabled, we would
+            # get a page without formatted_data.
+            gollum_find_page(title: title, dir: dir, version: version)&.formatted_data
+          end
+        end
+      end
+
       private
 
       # options:

lib/gitlab/gitaly_client.rb

@@ -6,6 +6,7 @@ require 'grpc/health/v1/health_services_pb'
 
 module Gitlab
   module GitalyClient
+    include Gitlab::Metrics::Methods
     module MigrationStatus
       DISABLED = 1
       OPT_IN = 2
@@ -33,8 +34,6 @@ module Gitlab
     CLIENT_NAME = (Sidekiq.server? ? 'gitlab-sidekiq' : 'gitlab-web').freeze
 
     MUTEX = Mutex.new
-    METRICS_MUTEX = Mutex.new
-    private_constant :MUTEX, :METRICS_MUTEX
 
     class << self
       attr_accessor :query_time
@@ -42,28 +41,14 @@ module Gitlab
 
     self.query_time = 0
 
-    def self.migrate_histogram
-      @migrate_histogram ||=
-        METRICS_MUTEX.synchronize do
-          # If a thread was blocked on the mutex, the value was set already
-          return @migrate_histogram if @migrate_histogram
-
-          Gitlab::Metrics.histogram(:gitaly_migrate_call_duration_seconds,
-                                    "Gitaly migration call execution timings",
-                                    gitaly_enabled: nil, feature: nil)
-        end
+    define_histogram :gitaly_migrate_call_duration_seconds do
+      docstring "Gitaly migration call execution timings"
+      base_labels gitaly_enabled: nil, feature: nil
     end
 
-    def self.gitaly_call_histogram
-      @gitaly_call_histogram ||=
-        METRICS_MUTEX.synchronize do
-          # If a thread was blocked on the mutex, the value was set already
-          return @gitaly_call_histogram if @gitaly_call_histogram
-
-          Gitlab::Metrics.histogram(:gitaly_controller_action_duration_seconds,
-                                    "Gitaly endpoint histogram by controller and action combination",
-                                    Gitlab::Metrics::Transaction::BASE_LABELS.merge(gitaly_service: nil, rpc: nil))
-        end
+    define_histogram :gitaly_controller_action_duration_seconds do
+      docstring "Gitaly endpoint histogram by controller and action combination"
+      base_labels Gitlab::Metrics::Transaction::BASE_LABELS.merge(gitaly_service: nil, rpc: nil)
     end
 
     def self.stub(name, storage)
@@ -145,7 +130,7 @@ module Gitlab
 
       # Keep track, seperately, for the performance bar
       self.query_time += duration
-      gitaly_call_histogram.observe(
+      gitaly_controller_action_duration_seconds.observe(
         current_transaction_labels.merge(gitaly_service: service.to_s, rpc: rpc.to_s),
         duration)
     end
@@ -247,7 +232,7 @@ module Gitlab
             yield is_enabled
           ensure
             total_time = Gitlab::Metrics::System.monotonic_time - start
-            migrate_histogram.observe({ gitaly_enabled: is_enabled, feature: feature }, total_time)
+            gitaly_migrate_call_duration_seconds.observe({ gitaly_enabled: is_enabled, feature: feature }, total_time)
             feature_stack.shift
             Thread.current[:gitaly_feature_stack] = nil if feature_stack.empty?
           end

lib/gitlab/gitaly_client/operation_service.rb

@@ -103,7 +103,13 @@ module Gitlab
 
         request_enum.push(Gitaly::UserMergeBranchRequest.new(apply: true))
 
-        branch_update = response_enum.next.branch_update
+        second_response = response_enum.next
+
+        if second_response.pre_receive_error.present?
+          raise Gitlab::Git::HooksService::PreReceiveError, second_response.pre_receive_error
+        end
+
+        branch_update = second_response.branch_update
         return if branch_update.nil?
         raise Gitlab::Git::CommitError.new('failed to apply merge to branch') unless branch_update.commit_id.present?
 

lib/gitlab/gitaly_client/ref_service.rb

@@ -133,13 +133,16 @@ module Gitlab
         GitalyClient.call(@repository.storage, :ref_service, :delete_branch, request)
       end
 
-      def delete_refs(except_with_prefixes:)
+      def delete_refs(refs: [], except_with_prefixes: [])
         request = Gitaly::DeleteRefsRequest.new(
           repository: @gitaly_repo,
-          except_with_prefix: except_with_prefixes
+          refs: refs.map { |r| encode_binary(r) },
+          except_with_prefix: except_with_prefixes.map { |r| encode_binary(r) }
         )
 
-        GitalyClient.call(@repository.storage, :ref_service, :delete_refs, request)
+        response = GitalyClient.call(@repository.storage, :ref_service, :delete_refs, request)
+
+        raise Gitlab::Git::Repository::GitError, response.git_error if response.git_error.present?
       end
 
       private

lib/gitlab/gitaly_client/repository_service.rb

@@ -203,6 +203,22 @@ module Gitlab
           timeout: GitalyClient.default_timeout
         )
       end
+
+      def write_ref(ref_path, ref, old_ref, shell)
+        request = Gitaly::WriteRefRequest.new(
+          repository: @gitaly_repo,
+          ref: ref_path.b,
+          revision: ref.b,
+          shell: shell
+        )
+        request.old_revision = old_ref.b unless old_ref.nil?
+
+        response = GitalyClient.call(@storage, :repository_service, :write_ref, request)
+
+        raise Gitlab::Git::CommandError, encode!(response.error) if response.error.present?
+
+        true
+      end
     end
   end
 end

lib/gitlab/gitaly_client/server_service.rb

+module Gitlab
+  module GitalyClient
+    # Meant for extraction of server data, and later maybe to perform misc task
+    #
+    # Not meant for connection logic, look in Gitlab::GitalyClient
+    class ServerService
+      def initialize(storage)
+        @storage = storage
+      end
+
+      def info
+        GitalyClient.call(@storage, :server_service, :server_info, Gitaly::ServerInfoRequest.new)
+      end
+    end
+  end
+end

lib/gitlab/gitaly_client/wiki_service.rb

@@ -127,6 +127,18 @@ module Gitlab
         wiki_file
       end
 
+      def get_formatted_data(title:, dir: nil, version: nil)
+        request = Gitaly::WikiGetFormattedDataRequest.new(
+          repository: @gitaly_repo,
+          title: encode_binary(title),
+          revision: encode_binary(version),
+          directory: encode_binary(dir)
+        )
+
+        response = GitalyClient.call(@repository.storage, :wiki_service, :wiki_get_formatted_data, request)
+        response.reduce("") { |memo, msg| memo << msg.data }
+      end
+
       private
 
       # If a block is given and the yielded value is true, iteration will be

lib/gitlab/metrics.rb

 module Gitlab
   module Metrics
-    extend Gitlab::Metrics::InfluxDb
-    extend Gitlab::Metrics::Prometheus
+    include Gitlab::Metrics::InfluxDb
+    include Gitlab::Metrics::Prometheus
 
     def self.enabled?
       influx_metrics_enabled? || prometheus_metrics_enabled?

lib/gitlab/metrics/influx_db.rb

 module Gitlab
   module Metrics
     module InfluxDb
-      include Gitlab::CurrentSettings
-      extend self
+      extend ActiveSupport::Concern
+      include Gitlab::Metrics::Methods
+
+      EXECUTION_MEASUREMENT_BUCKETS = [0.001, 0.01, 0.1, 1].freeze
 
       MUTEX = Mutex.new
       private_constant :MUTEX
 
+      class_methods do
         def influx_metrics_enabled?
           settings[:enabled] || false
         end
 
         # Prometheus histogram buckets used for arbitrary code measurements
-      EXECUTION_MEASUREMENT_BUCKETS = [0.001, 0.002, 0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1].freeze
-      RAILS_ROOT = Rails.root.to_s
-      METRICS_ROOT = Rails.root.join('lib', 'gitlab', 'metrics').to_s
-      PATH_REGEX = /^#{RAILS_ROOT}\/?/
 
         def settings
-        @settings ||= {
-          enabled: current_application_settings[:metrics_enabled],
-          pool_size: current_application_settings[:metrics_pool_size],
-          timeout: current_application_settings[:metrics_timeout],
-          method_call_threshold: current_application_settings[:metrics_method_call_threshold],
-          host: current_application_settings[:metrics_host],
-          port: current_application_settings[:metrics_port],
-          sample_interval: current_application_settings[:metrics_sample_interval] || 15,
-          packet_size: current_application_settings[:metrics_packet_size] || 1
+          @settings ||= begin
+            current_settings = Gitlab::CurrentSettings.current_application_settings
+
+            {
+              enabled: current_settings[:metrics_enabled],
+              pool_size: current_settings[:metrics_pool_size],
+              timeout: current_settings[:metrics_timeout],
+              method_call_threshold: current_settings[:metrics_method_call_threshold],
+              host: current_settings[:metrics_host],
+              port: current_settings[:metrics_port],
+              sample_interval: current_settings[:metrics_sample_interval] || 15,
+              packet_size: current_settings[:metrics_packet_size] || 1
           }
           end
+        end
 
         def mri?
           RUBY_ENGINE == 'ruby'
@@ -105,21 +108,25 @@ module Gitlab
           real_time = (real_stop - real_start)
           cpu_time = cpu_stop - cpu_start
 
-        Gitlab::Metrics.histogram("gitlab_#{name}_real_duration_seconds".to_sym,
-                                  "Measure #{name}",
-                                  Transaction::BASE_LABELS,
-                                  EXECUTION_MEASUREMENT_BUCKETS)
-          .observe(trans.labels, real_time)
-
-        Gitlab::Metrics.histogram("gitlab_#{name}_cpu_duration_seconds".to_sym,
-                                  "Measure #{name}",
-                                  Transaction::BASE_LABELS,
-                                  EXECUTION_MEASUREMENT_BUCKETS)
-          .observe(trans.labels, cpu_time / 1000.0)
-
-        # InfluxDB stores the _real_time time values as milliseconds
-        trans.increment("#{name}_real_time", real_time * 1000, false)
-        trans.increment("#{name}_cpu_time", cpu_time, false)
+          real_duration_seconds = fetch_histogram("gitlab_#{name}_real_duration_seconds".to_sym) do
+            docstring "Measure #{name}"
+            base_labels Transaction::BASE_LABELS
+            buckets EXECUTION_MEASUREMENT_BUCKETS
+          end
+
+          real_duration_seconds.observe(trans.labels, real_time)
+
+          cpu_duration_seconds = fetch_histogram("gitlab_#{name}_cpu_duration_seconds".to_sym) do
+            docstring "Measure #{name}"
+            base_labels Transaction::BASE_LABELS
+            buckets EXECUTION_MEASUREMENT_BUCKETS
+            with_feature "prometheus_metrics_measure_#{name}_cpu_duration"
+          end
+          cpu_duration_seconds.observe(trans.labels, cpu_time)
+
+          # InfluxDB stores the _real_time and _cpu_time time values as milliseconds
+          trans.increment("#{name}_real_time", real_time.in_milliseconds, false)
+          trans.increment("#{name}_cpu_time", cpu_time.in_milliseconds, false)
           trans.increment("#{name}_call_count", 1, false)
 
           retval
@@ -176,4 +183,5 @@ module Gitlab
         # rubocop:enable Gitlab/ModuleWithInstanceVariables
       end
     end
+  end
 end

lib/gitlab/metrics/method_call.rb

@@ -4,26 +4,15 @@ module Gitlab
   module Metrics
     # Class for tracking timing information about method calls
     class MethodCall
-      @@measurement_enabled_cache = Concurrent::AtomicBoolean.new(false)
-      @@measurement_enabled_cache_expires_at = Concurrent::AtomicReference.new(Time.now.to_i)
-      MUTEX = Mutex.new
+      include Gitlab::Metrics::Methods
       BASE_LABELS = { module: nil, method: nil }.freeze
       attr_reader :real_time, :cpu_time, :call_count, :labels
 
-      def self.call_duration_histogram
-        return @call_duration_histogram if @call_duration_histogram
-
-        MUTEX.synchronize do
-          @call_duration_histogram ||= Gitlab::Metrics.histogram(
-            :gitlab_method_call_duration_seconds,
-            'Method calls real duration',
-            Transaction::BASE_LABELS.merge(BASE_LABELS),
-            [0.01, 0.05, 0.1, 0.5, 1])
-        end
-      end
-
-      def self.measurement_enabled_cache_expires_at
-        @@measurement_enabled_cache_expires_at
+      define_histogram :gitlab_method_call_duration_seconds do
+        docstring 'Method calls real duration'
+        base_labels Transaction::BASE_LABELS.merge(BASE_LABELS)
+        buckets [0.01, 0.05, 0.1, 0.5, 1]
+        with_feature :prometheus_metrics_method_instrumentation
       end
 
       # name - The full name of the method (including namespace) such as
@@ -53,8 +42,8 @@ module Gitlab
         @cpu_time += cpu_time
         @call_count += 1
 
-        if call_measurement_enabled? && above_threshold?
-          self.class.call_duration_histogram.observe(@transaction.labels.merge(labels), real_time)
+        if above_threshold?
+          self.class.gitlab_method_call_duration_seconds.observe(@transaction.labels.merge(labels), real_time)
         end
 
         retval
@@ -78,17 +67,6 @@ module Gitlab
       def above_threshold?
         real_time.in_milliseconds >= Metrics.method_call_threshold
       end
-
-      def call_measurement_enabled?
-        expires_at = @@measurement_enabled_cache_expires_at.value
-        if expires_at < Time.now.to_i
-          if @@measurement_enabled_cache_expires_at.compare_and_set(expires_at, 1.minute.from_now.to_i)
-            @@measurement_enabled_cache.value = Feature.get(:prometheus_metrics_method_instrumentation).enabled?
-          end
-        end
-
-        @@measurement_enabled_cache.value
-      end
     end
   end
 end

lib/gitlab/metrics/methods.rb

+# rubocop:disable Style/ClassVars
+
+module Gitlab
+  module Metrics
+    module Methods
+      extend ActiveSupport::Concern
+
+      included do
+        @@_metric_provider_mutex ||= Mutex.new
+        @@_metrics_provider_cache = {}
+      end
+
+      class_methods do
+        def reload_metric!(name)
+          @@_metrics_provider_cache.delete(name)
+        end
+
+        private
+
+        def define_metric(type, name, opts = {}, &block)
+          if respond_to?(name)
+            raise ArgumentError, "method #{name} already exists"
+          end
+
+          define_singleton_method(name) do
+            # inlining fetch_metric method to avoid method call overhead when instrumenting hot spots
+            @@_metrics_provider_cache[name] || init_metric(type, name, opts, &block)
+          end
+        end
+
+        def fetch_metric(type, name, opts = {}, &block)
+          @@_metrics_provider_cache[name] || init_metric(type, name, opts, &block)
+        end
+
+        def init_metric(type, name, opts = {}, &block)
+          options = MetricOptions.new(opts)
+          options.evaluate(&block)
+
+          if disabled_by_feature(options)
+            synchronized_cache_fill(name) { NullMetric.instance }
+          else
+            synchronized_cache_fill(name) { build_metric!(type, name, options) }
+          end
+        end
+
+        def synchronized_cache_fill(key)
+          @@_metric_provider_mutex.synchronize do
+            @@_metrics_provider_cache[key] ||= yield
+          end
+        end
+
+        def disabled_by_feature(options)
+          options.with_feature && !Feature.get(options.with_feature).enabled?
+        end
+
+        def build_metric!(type, name, options)
+          case type
+          when :gauge
+            Gitlab::Metrics.gauge(name, options.docstring, options.base_labels, options.multiprocess_mode)
+          when :counter
+            Gitlab::Metrics.counter(name, options.docstring, options.base_labels)
+          when :histogram
+            Gitlab::Metrics.histogram(name, options.docstring, options.base_labels, options.buckets)
+          when :summary
+            raise NotImplementedError, "summary metrics are not currently supported"
+          else
+            raise ArgumentError, "uknown metric type #{type}"
+          end
+        end
+
+        # Fetch and/or initialize counter metric
+        # @param [Symbol] name
+        # @param [Hash] opts
+        def fetch_counter(name, opts = {}, &block)
+          fetch_metric(:counter, name, opts, &block)
+        end
+
+        # Fetch and/or initialize gauge metric
+        # @param [Symbol] name
+        # @param [Hash] opts
+        def fetch_gauge(name, opts = {}, &block)
+          fetch_metric(:gauge, name, opts, &block)
+        end
+
+        # Fetch and/or initialize histogram metric
+        # @param [Symbol] name
+        # @param [Hash] opts
+        def fetch_histogram(name, opts = {}, &block)
+          fetch_metric(:histogram, name, opts, &block)
+        end
+
+        # Fetch and/or initialize summary metric
+        # @param [Symbol] name
+        # @param [Hash] opts
+        def fetch_summary(name, opts = {}, &block)
+          fetch_metric(:summary, name, opts, &block)
+        end
+
+        # Define metric accessor method for a Counter
+        # @param [Symbol] name
+        # @param [Hash] opts
+        def define_counter(name, opts = {}, &block)
+          define_metric(:counter, name, opts, &block)
+        end
+
+        # Define metric accessor method for a Gauge
+        # @param [Symbol] name
+        # @param [Hash] opts
+        def define_gauge(name, opts = {}, &block)
+          define_metric(:gauge, name, opts, &block)
+        end
+
+        # Define metric accessor method for a Histogram
+        # @param [Symbol] name
+        # @param [Hash] opts
+        def define_histogram(name, opts = {}, &block)
+          define_metric(:histogram, name, opts, &block)
+        end
+
+        # Define metric accessor method for a Summary
+        # @param [Symbol] name
+        # @param [Hash] opts
+        def define_summary(name, opts = {}, &block)
+          define_metric(:summary, name, opts, &block)
+        end
+      end
+    end
+  end
+end

lib/gitlab/metrics/methods/metric_options.rb

+module Gitlab
+  module Metrics
+    module Methods
+      class MetricOptions
+        SMALL_NETWORK_BUCKETS = [0.005, 0.01, 0.1, 1, 10].freeze
+
+        def initialize(options = {})
+          @multiprocess_mode = options[:multiprocess_mode] || :all
+          @buckets = options[:buckets] || SMALL_NETWORK_BUCKETS
+          @base_labels = options[:base_labels] || {}
+          @docstring = options[:docstring]
+          @with_feature = options[:with_feature]
+        end
+
+        # Documentation describing metric in metrics endpoint '/-/metrics'
+        def docstring(docstring = nil)
+          @docstring = docstring unless docstring.nil?
+
+          @docstring
+        end
+
+        # Gauge aggregation mode for multiprocess metrics
+        # - :all (default) returns each gauge for every process
+        # - :livesum all process'es gauges summed up
+        # - :max maximum value of per process gauges
+        # - :min minimum value of per process gauges
+        def multiprocess_mode(mode = nil)
+          @multiprocess_mode = mode unless mode.nil?
+
+          @multiprocess_mode
+        end
+
+        # Measurement buckets for histograms
+        def buckets(buckets = nil)
+          @buckets = buckets unless buckets.nil?
+
+          @buckets
+        end
+
+        # Base labels are merged with per metric labels
+        def base_labels(base_labels = nil)
+          @base_labels = base_labels unless base_labels.nil?
+
+          @base_labels
+        end
+
+        # Use feature toggle to control whether certain metric is enabled/disabled
+        def with_feature(name = nil)
+          @with_feature = name unless name.nil?
+
+          @with_feature
+        end
+
+        def evaluate(&block)
+          instance_eval(&block) if block_given?
+          self
+        end
+      end
+    end
+  end
+end

lib/gitlab/metrics/null_metric.rb

@@ -2,6 +2,8 @@ module Gitlab
   module Metrics
     # Mocks ::Prometheus::Client::Metric and all derived metrics
     class NullMetric
+      include Singleton
+
       def method_missing(name, *args, &block)
         nil
       end

lib/gitlab/metrics/prometheus.rb

@@ -3,12 +3,14 @@ require 'prometheus/client'
 module Gitlab
   module Metrics
     module Prometheus
-      include Gitlab::CurrentSettings
-      include Gitlab::Utils::StrongMemoize
+      extend ActiveSupport::Concern
 
       REGISTRY_MUTEX = Mutex.new
       PROVIDER_MUTEX = Mutex.new
 
+      class_methods do
+        include Gitlab::Utils::StrongMemoize
+
         def metrics_folder_present?
           multiprocess_files_dir = ::Prometheus::Client.configuration.multiprocess_files_dir
 
@@ -64,12 +66,14 @@ module Gitlab
           if prometheus_metrics_enabled?
             registry.get(name)
           else
-          NullMetric.new
+            NullMetric.instance
           end
         end
 
         def prometheus_metrics_enabled_unmemoized
-        metrics_folder_present? && current_application_settings[:prometheus_metrics_enabled] || false
+          metrics_folder_present? &&
+            Gitlab::CurrentSettings.current_application_settings[:prometheus_metrics_enabled] || false
+        end
       end
     end
   end

lib/gitlab/metrics/subscribers/action_view.rb

@@ -3,6 +3,14 @@ module Gitlab
     module Subscribers
       # Class for tracking the rendering timings of views.
       class ActionView < ActiveSupport::Subscriber
+        include Gitlab::Metrics::Methods
+        define_histogram :gitlab_view_rendering_duration_seconds do
+          docstring 'View rendering time'
+          base_labels Transaction::BASE_LABELS.merge({ path: nil })
+          buckets [0.001, 0.01, 0.1, 1, 10.0]
+          with_feature :prometheus_metrics_view_instrumentation
+        end
+
         attach_to :action_view
 
         SERIES = 'views'.freeze
@@ -15,23 +23,11 @@ module Gitlab
 
         private
 
-        def metric_view_rendering_duration_seconds
-          @metric_view_rendering_duration_seconds ||= Gitlab::Metrics.histogram(
-            :gitlab_view_rendering_duration_seconds,
-            'View rendering time',
-            Transaction::BASE_LABELS.merge({ path: nil }),
-            [0.001, 0.002, 0.005, 0.01, 0.02, 0.05, 0.1, 0.500, 2.0, 10.0]
-          )
-        end
-
         def track(event)
           values = values_for(event)
           tags   = tags_for(event)
 
-          metric_view_rendering_duration_seconds.observe(
-            current_transaction.labels.merge(tags),
-            event.duration
-          )
+          self.class.gitlab_view_rendering_duration_seconds.observe(current_transaction.labels.merge(tags), event.duration)
 
           current_transaction.increment(:view_duration, event.duration)
           current_transaction.add_metric(SERIES, values, tags)

lib/gitlab/metrics/subscribers/active_record.rb

@@ -3,12 +3,13 @@ module Gitlab
     module Subscribers
       # Class for tracking the total query duration of a transaction.
       class ActiveRecord < ActiveSupport::Subscriber
+        include Gitlab::Metrics::Methods
         attach_to :active_record
 
         def sql(event)
           return unless current_transaction
 
-          metric_sql_duration_seconds.observe(current_transaction.labels, event.duration / 1000.0)
+          self.class.gitlab_sql_duration_seconds.observe(current_transaction.labels, event.duration / 1000.0)
 
           current_transaction.increment(:sql_duration, event.duration, false)
           current_transaction.increment(:sql_count, 1, false)
@@ -16,17 +17,14 @@ module Gitlab
 
         private
 
-        def current_transaction
-          Transaction.current
+        define_histogram :gitlab_sql_duration_seconds do
+          docstring 'SQL time'
+          base_labels Transaction::BASE_LABELS
+          buckets [0.001, 0.01, 0.1, 1.0, 10.0]
         end
 
-        def metric_sql_duration_seconds
-          @metric_sql_duration_seconds ||= Gitlab::Metrics.histogram(
-            :gitlab_sql_duration_seconds,
-            'SQL time',
-            Transaction::BASE_LABELS,
-            [0.001, 0.002, 0.005, 0.01, 0.02, 0.05, 0.1, 0.500, 2.0, 10.0]
-          )
+        def current_transaction
+          Transaction.current
         end
       end
     end

lib/gitlab/metrics/transaction.rb

@@ -2,11 +2,12 @@ module Gitlab
   module Metrics
     # Class for storing metrics information of a single transaction.
     class Transaction
+      include Gitlab::Metrics::Methods
+
       # base labels shared among all transactions
       BASE_LABELS = { controller: nil, action: nil }.freeze
 
       THREAD_KEY = :_gitlab_metrics_transaction
-      METRICS_MUTEX = Mutex.new
 
       # The series to store events (e.g. Git pushes) in.
       EVENT_SERIES = 'events'.freeze
@@ -54,8 +55,8 @@ module Gitlab
         @memory_after = System.memory_usage
         @finished_at = System.monotonic_time
 
-        self.class.metric_transaction_duration_seconds.observe(labels, duration)
-        self.class.metric_transaction_allocated_memory_bytes.observe(labels, allocated_memory * 1024.0)
+        self.class.gitlab_transaction_duration_seconds.observe(labels, duration)
+        self.class.gitlab_transaction_allocated_memory_bytes.observe(labels, allocated_memory * 1024.0)
 
         Thread.current[THREAD_KEY] = nil
       end
@@ -72,7 +73,7 @@ module Gitlab
       # event_name - The name of the event (e.g. "git_push").
       # tags - A set of tags to attach to the event.
       def add_event(event_name, tags = {})
-        self.class.metric_event_counter(event_name, tags).increment(tags.merge(labels))
+        self.class.transaction_metric(event_name, :counter, prefix: 'event_', tags: tags).increment(tags.merge(labels))
         @metrics << Metric.new(EVENT_SERIES, { count: 1 }, tags.merge(event: event_name), :event)
       end
 
@@ -86,12 +87,12 @@ module Gitlab
       end
 
       def increment(name, value, use_prometheus = true)
-        self.class.metric_transaction_counter(name).increment(labels, value) if use_prometheus
+        self.class.transaction_metric(name, :counter).increment(labels, value) if use_prometheus
         @values[name] += value
       end
 
       def set(name, value, use_prometheus = true)
-        self.class.metric_transaction_gauge(name).set(labels, value) if use_prometheus
+        self.class.transaction_metric(name, :gauge).set(labels, value) if use_prometheus
         @values[name] = value
       end
 
@@ -136,65 +137,29 @@ module Gitlab
         "#{labels[:controller]}##{labels[:action]}" if labels && !labels.empty?
       end
 
-      def self.metric_transaction_duration_seconds
-        return @metric_transaction_duration_seconds if @metric_transaction_duration_seconds
-
-        METRICS_MUTEX.synchronize do
-          @metric_transaction_duration_seconds ||= Gitlab::Metrics.histogram(
-            :gitlab_transaction_duration_seconds,
-            'Transaction duration',
-            BASE_LABELS,
-            [0.001, 0.002, 0.005, 0.01, 0.02, 0.05, 0.1, 0.500, 2.0, 10.0]
-          )
-        end
-      end
-
-      def self.metric_transaction_allocated_memory_bytes
-        return @metric_transaction_allocated_memory_bytes if @metric_transaction_allocated_memory_bytes
-
-        METRICS_MUTEX.synchronize do
-          @metric_transaction_allocated_memory_bytes ||= Gitlab::Metrics.histogram(
-            :gitlab_transaction_allocated_memory_bytes,
-            'Transaction allocated memory bytes',
-            BASE_LABELS,
-            [1000, 10000, 20000, 500000, 1000000, 2000000, 5000000, 10000000, 20000000, 100000000]
-          )
+      define_histogram :gitlab_transaction_duration_seconds do
+        docstring 'Transaction duration'
+        base_labels BASE_LABELS
+        buckets [0.001, 0.01, 0.1, 1.0, 10.0]
       end
-      end
-
-      def self.metric_event_counter(event_name, tags)
-        return @metric_event_counters[event_name] if @metric_event_counters&.has_key?(event_name)
 
-        METRICS_MUTEX.synchronize do
-          @metric_event_counters ||= {}
-          @metric_event_counters[event_name] ||= Gitlab::Metrics.counter(
-            "gitlab_transaction_event_#{event_name}_total".to_sym,
-            "Transaction event #{event_name} counter",
-            tags.merge(BASE_LABELS)
-          )
-        end
+      define_histogram :gitlab_transaction_allocated_memory_bytes do
+        docstring 'Transaction allocated memory bytes'
+        base_labels BASE_LABELS
+        buckets [100, 1000, 10000, 100000, 1000000, 10000000]
+        with_feature :prometheus_metrics_transaction_allocated_memory
       end
 
-      def self.metric_transaction_counter(name)
-        return @metric_transaction_counters[name] if @metric_transaction_counters&.has_key?(name)
+      def self.transaction_metric(name, type, prefix: nil, tags: {})
+        metric_name = "gitlab_transaction_#{prefix}#{name}_total".to_sym
+        fetch_metric(type, metric_name) do
+          docstring "Transaction #{prefix}#{name} #{type}"
+          base_labels tags.merge(BASE_LABELS)
 
-        METRICS_MUTEX.synchronize do
-          @metric_transaction_counters ||= {}
-          @metric_transaction_counters[name] ||= Gitlab::Metrics.counter(
-            "gitlab_transaction_#{name}_total".to_sym, "Transaction #{name} counter", BASE_LABELS
-          )
+          if type == :gauge
+            multiprocess_mode :livesum
           end
         end
-
-      def self.metric_transaction_gauge(name)
-        return @metric_transaction_gauges[name] if @metric_transaction_gauges&.has_key?(name)
-
-        METRICS_MUTEX.synchronize do
-          @metric_transaction_gauges ||= {}
-          @metric_transaction_gauges[name] ||= Gitlab::Metrics.gauge(
-            "gitlab_transaction_#{name}".to_sym, "Transaction gauge #{name}", BASE_LABELS, :livesum
-          )
-        end
       end
     end
   end

lib/gitlab/o_auth/user.rb

@@ -55,7 +55,7 @@ module Gitlab
         user ||= find_or_build_ldap_user if auto_link_ldap_user?
         user ||= build_new_user if signup_enabled?
 
-        user.external = true if external_provider? && user
+        user.external = true if external_provider? && user&.new_record?
 
         user
       end

qa/README.md

@@ -34,6 +34,9 @@ You can use GitLab QA to exercise tests on any live instance! For example, the
 following call would login to a local [GDK] instance and run all specs in
 `qa/specs/features`:
 
+First, `cd` into the `$gdk/gitlab/qa` directory.
+The `bin/qa` script expects you to be in the `qa` folder of the app.
+
 ```
 bin/qa Test::Instance http://localhost:3000
 ```

qa/qa.rb

@@ -27,6 +27,7 @@ module QA
     module Resource
       autoload :Sandbox, 'qa/factory/resource/sandbox'
       autoload :Group, 'qa/factory/resource/group'
+      autoload :Issue, 'qa/factory/resource/issue'
       autoload :Project, 'qa/factory/resource/project'
       autoload :MergeRequest, 'qa/factory/resource/merge_request'
       autoload :DeployKey, 'qa/factory/resource/deploy_key'
@@ -125,6 +126,12 @@ module QA
         autoload :SecretVariables, 'qa/page/project/settings/secret_variables'
         autoload :Runners, 'qa/page/project/settings/runners'
       end
+
+      module Issue
+        autoload :New, 'qa/page/project/issue/new'
+        autoload :Show, 'qa/page/project/issue/show'
+        autoload :Index, 'qa/page/project/issue/index'
+      end
     end
 
     module Profile
@@ -143,6 +150,13 @@ module QA
       autoload :Main, 'qa/page/mattermost/main'
       autoload :Login, 'qa/page/mattermost/login'
     end
+
+    ##
+    # Classes describing components that are used by several pages.
+    #
+    module Component
+      autoload :Dropzone, 'qa/page/component/dropzone'
+    end
   end
 
   ##

qa/qa/factory/resource/issue.rb

+require 'securerandom'
+
+module QA
+  module Factory
+    module Resource
+      class Issue < Factory::Base
+        attr_writer :title, :description, :project
+
+        dependency Factory::Resource::Project, as: :project do |project|
+          project.name = 'project-for-issues'
+          project.description = 'project for adding issues'
+        end
+
+        product :title do
+          Page::Project::Issue::Show.act { issue_title }
+        end
+
+        def fabricate!
+          project.visit!
+
+          Page::Project::Show.act do
+            go_to_new_issue
+          end
+
+          Page::Project::Issue::New.perform do |page|
+            page.add_title(@title)
+            page.add_description(@description)
+            page.create_new_issue
+          end
+        end
+      end
+    end
+  end
+end

qa/qa/page/admin/settings.rb

@@ -2,12 +2,13 @@ module QA
   module Page
     module Admin
       class Settings < Page::Base
-        ##
-        # TODO, define all selectors required by this page object
-        #
-        # See gitlab-org/gitlab-qa#154
-        #
-        view 'app/views/admin/application_settings/show.html.haml'
+        view 'app/views/admin/application_settings/_form.html.haml' do
+          element :form_actions, '.form-actions'
+          element :submit, "submit 'Save'"
+          element :repository_storage, '%legend Repository Storage'
+          element :hashed_storage,
+            'Create new projects using hashed storage paths'
+        end
 
         def enable_hashed_storage
           scroll_to 'legend', text: 'Repository Storage'

qa/qa/page/base.rb

@@ -42,6 +42,23 @@ module QA
         page.within(selector) { yield } if block_given?
       end
 
+      # Returns true if successfully GETs the given URL
+      # Useful because `page.status_code` is unsupported by our driver, and
+      # we don't have access to the `response` to use `have_http_status`.
+      def asset_exists?(url)
+        page.execute_script <<~JS
+          xhr = new XMLHttpRequest();
+          xhr.open('GET', '#{url}', true);
+          xhr.send();
+        JS
+
+        return false unless wait(time: 0.5, max: 60, reload: false) do
+          page.evaluate_script('xhr.readyState == XMLHttpRequest.DONE')
+        end
+
+        page.evaluate_script('xhr.status') == 200
+      end
+
       def find_element(name)
         find(element_selector_css(name))
       end

qa/qa/page/component/dropzone.rb

+module QA
+  module Page
+    module Component
+      class Dropzone
+        attr_reader :page, :container
+
+        def initialize(page, container)
+          @page = page
+          @container = container
+        end
+
+        # Not tested and not expected to work with multiple dropzones
+        # instantiated on one page because there is no distinguishing
+        # attribute per dropzone file field.
+        def attach_file(attachment)
+          filename = File.basename(attachment)
+
+          field_style = { visibility: 'visible', height: '', width: '' }
+          page.attach_file(attachment, class: 'dz-hidden-input', make_visible: field_style)
+
+          # Wait for link to be appended to dropzone text
+          page.wait(reload: false) do
+            page.find("#{container} textarea").value.match(filename)
+          end
+        end
+      end
+    end
+  end
+end

qa/qa/page/group/show.rb

@@ -2,12 +2,20 @@ module QA
   module Page
     module Group
       class Show < Page::Base
-        ##
-        # TODO, define all selectors required by this page object
-        #
-        # See gitlab-org/gitlab-qa#154
-        #
-        view 'app/views/groups/show.html.haml'
+        view 'app/views/groups/show.html.haml' do
+          element :new_project_or_subgroup_dropdown, '.new-project-subgroup'
+          element :new_project_or_subgroup_dropdown_toggle, '.dropdown-toggle'
+          element :new_project_option, /%li.*data:.*value: "new-project"/
+          element :new_project_button, /%input.*data:.*action: "new-project"/
+          element :new_subgroup_option, /%li.*data:.*value: "new-subgroup"/
+
+          # data-value and data-action get modified by JS for subgroup
+          element :new_subgroup_button, /%input.*\.js-new-group-child/
+        end
+
+        view 'app/assets/javascripts/groups/constants.js' do
+          element :no_result_text, 'Sorry, no groups or projects matched your search'
+        end
 
         def go_to_subgroup(name)
           click_link name
@@ -20,35 +28,40 @@ module QA
         def has_subgroup?(name)
           filter_by_name(name)
 
-          page.has_link?(name)
-        end
-
-        def go_to_new_subgroup
-          within '.new-project-subgroup' do
-            # May need to click again because it is possible to click the button quicker than the JS is bound
           wait(reload: false) do
-              find('.dropdown-toggle').click
+            return false if page.has_content?('Sorry, no groups or projects matched your search')
 
-              page.has_css?("li[data-value='new-subgroup']")
+            page.has_link?(name)
           end
-            find("li[data-value='new-subgroup']").click
         end
 
+        def go_to_new_subgroup
+          click_new('subgroup')
+
           find("input[data-action='new-subgroup']").click
         end
 
         def go_to_new_project
+          click_new('project')
+
+          find("input[data-action='new-project']").click
+        end
+
+        private
+
+        def click_new(kind)
           within '.new-project-subgroup' do
+            css = "li[data-value='new-#{kind}']"
+
             # May need to click again because it is possible to click the button quicker than the JS is bound
             wait(reload: false) do
               find('.dropdown-toggle').click
 
-              page.has_css?("li[data-value='new-project']")
-            end
-            find("li[data-value='new-project']").click
+              page.has_css?(css)
             end
 
-          find("input[data-action='new-project']").click
+            find(css).click
+          end
         end
       end
     end

qa/qa/page/menu/admin.rb

@@ -2,15 +2,8 @@ module QA
   module Page
     module Menu
       class Admin < Page::Base
-        ##
-        # TODO, define all selectors required by this page object
-        #
-        # See gitlab-org/gitlab-qa#154
-        #
-        view 'app/views/admin/dashboard/index.html.haml'
-
-        def go_to_license
-          click_link 'License'
+        view 'app/views/layouts/nav/sidebar/_admin.html.haml' do
+          element :settings, "_('Settings')"
         end
 
         def go_to_settings

qa/qa/page/menu/side.rb

@@ -7,6 +7,8 @@ module QA
           element :settings_link, 'link_to edit_project_path'
           element :repository_link, "title: 'Repository'"
           element :pipelines_settings_link, "title: 'CI / CD'"
+          element :issues_link, %r{link_to.*shortcuts-issues}
+          element :issues_link_text, "Issues"
           element :top_level_items, '.sidebar-top-level-items'
           element :activity_link, "title: 'Activity'"
         end
@@ -43,6 +45,12 @@ module QA
           end
         end
 
+        def click_issues
+          within_sidebar do
+            click_link('Issues')
+          end
+        end
+
         private
 
         def hover_settings

qa/qa/page/project/issue/index.rb

+module QA
+  module Page
+    module Project
+      module Issue
+        class Index < Page::Base
+          view 'app/views/projects/issues/_issue.html.haml' do
+            element :issue_link, 'link_to issue.title'
+          end
+
+          def go_to_issue(title)
+            click_link(title)
+          end
+        end
+      end
+    end
+  end
+end

qa/qa/page/project/issue/new.rb

+module QA
+  module Page
+    module Project
+      module Issue
+        class New < Page::Base
+          view 'app/views/shared/issuable/_form.html.haml' do
+            element :submit_issue_button, 'form.submit "Submit'
+          end
+
+          view 'app/views/shared/issuable/form/_title.html.haml' do
+            element :issue_title_textbox, 'form.text_field :title'
+          end
+
+          view 'app/views/shared/form_elements/_description.html.haml' do
+            element :issue_description_textarea, "render 'projects/zen', f: form, attr: :description"
+          end
+
+          def add_title(title)
+            fill_in 'issue_title', with: title
+          end
+
+          def add_description(description)
+            fill_in 'issue_description', with: description
+          end
+
+          def create_new_issue
+            click_on 'Submit issue'
+          end
+        end
+      end
+    end
+  end
+end

qa/qa/page/project/issue/show.rb

+module QA
+  module Page
+    module Project
+      module Issue
+        class Show < Page::Base
+          view 'app/views/projects/issues/show.html.haml' do
+            element :issue_details, '.issue-details'
+            element :title, '.title'
+          end
+
+          view 'app/views/shared/notes/_form.html.haml' do
+            element :new_note_form, 'new-note'
+            element :new_note_form, 'attr: :note'
+          end
+
+          view 'app/views/shared/notes/_comment_button.html.haml' do
+            element :comment_button, '%strong Comment'
+          end
+
+          def issue_title
+            find('.issue-details .title').text
+          end
+
+          # Adds a comment to an issue
+          # attachment option should be an absolute path
+          def comment(text, attachment: nil)
+            fill_in(with: text, name: 'note[note]')
+
+            unless attachment.nil?
+              QA::Page::Component::Dropzone.new(page, '.new-note')
+                .attach_file(attachment)
+            end
+
+            click_on 'Comment'
+          end
+        end
+      end
+    end
+  end
+end

qa/qa/page/project/show.rb

@@ -17,6 +17,11 @@ module QA
           element :project_name
         end
 
+        view 'app/views/layouts/header/_new_dropdown.haml' do
+          element :new_menu_toggle
+          element :new_issue_link, "link_to 'New issue', new_project_issue_path(@project)"
+        end
+
         def choose_repository_clone_http
           wait(reload: false) do
             click_element :clone_dropdown
@@ -46,6 +51,12 @@ module QA
           sleep 5
           refresh
         end
+
+        def go_to_new_issue
+          click_element :new_menu_toggle
+
+          click_link 'New issue'
+        end
       end
     end
   end

scripts/lint-rugged

@@ -21,6 +21,7 @@ ALLOWED = [
 ].freeze
 
 rugged_lines = IO.popen(%w[git grep -i -n rugged -- app config lib], &:read).lines
+rugged_lines = rugged_lines.select { |l| /^[^:]*\.rb:/ =~ l }
 rugged_lines = rugged_lines.reject { |l| l.start_with?(*ALLOWED) }
 rugged_lines = rugged_lines.reject do |line|
   code, _comment = line.split('# ', 2)

scripts/static-analysis

@@ -35,7 +35,6 @@ tasks = [
   %w[bundle exec rubocop --parallel],
   %w[bundle exec rake gettext:lint],
   %w[bundle exec rake lint:static_verification],
-  %w[scripts/lint-changelog-yaml],
   %w[scripts/lint-conflicts.sh],
   %w[scripts/lint-rugged]
 ]

spec/controllers/admin/gitaly_servers_controller_spec.rb

+require 'spec_helper'
+
+describe Admin::GitalyServersController do
+  describe '#index' do
+    before do
+      sign_in(create(:admin))
+    end
+
+    it 'shows the gitaly servers page' do
+      get :index
+
+      expect(response).to have_gitlab_http_status(200)
+    end
+  end
+end

spec/controllers/groups_controller_spec.rb

@@ -85,6 +85,30 @@ describe GroupsController do
     end
   end
 
+  describe 'GET #activity' do
+    render_views
+
+    before do
+      sign_in(user)
+      project
+    end
+
+    context 'as json' do
+      it 'includes all projects in event feed' do
+        3.times do
+          project = create(:project, group: group)
+          create(:event, project: project)
+        end
+
+        get :activity, id: group.to_param, format: :json
+
+        expect(response).to have_gitlab_http_status(200)
+        expect(json_response['count']).to eq(3)
+        expect(assigns(:projects).limit_value).to be_nil
+      end
+    end
+  end
+
   describe 'POST #create' do
     context 'when creating subgroups', :nested_groups do
       [true, false].each do |can_create_group_status|

spec/controllers/projects/issues_controller_spec.rb

@@ -102,6 +102,18 @@ describe Projects::IssuesController do
 
         expect(response).to redirect_to(namespace_project_issues_path(page: last_page, state: controller.params[:state], scope: controller.params[:scope]))
       end
+
+      it 'does not use pagination if disabled' do
+        allow(controller).to receive(:pagination_disabled?).and_return(true)
+
+        get :index,
+          namespace_id: project.namespace.to_param,
+          project_id: project,
+          page: (last_page + 1).to_param
+
+        expect(response).to have_gitlab_http_status(200)
+        expect(assigns(:issues).size).to eq(2)
+      end
     end
   end
 

spec/features/projects/members/share_with_group_spec.rb

@@ -122,7 +122,7 @@ feature 'Project > Members > Share with Group', :js do
       select2 group.id, from: '#link_group_id'
 
       fill_in 'expires_at_groups', with: (Time.now + 4.5.days).strftime('%Y-%m-%d')
-      page.find('body').click
+      click_on 'share-with-group-tab'
       find('.btn-create').click
     end
 

spec/javascripts/blob/viewer/index_spec.js

 /* eslint-disable no-new */
+import MockAdapter from 'axios-mock-adapter';
 import BlobViewer from '~/blob/viewer/index';
+import axios from '~/lib/utils/axios_utils';
 
 describe('Blob viewer', () => {
   let blob;
+  let mock;
+
   preloadFixtures('snippets/show.html.raw');
 
   beforeEach(() => {
+    mock = new MockAdapter(axios);
+
     loadFixtures('snippets/show.html.raw');
     $('#modal-upload-blob').remove();
 
     blob = new BlobViewer();
 
-    spyOn($, 'ajax').and.callFake(() => {
-      const d = $.Deferred();
-
-      d.resolve({
+    mock.onGet('http://test.host/snippets/1.json?viewer=rich').reply(200, {
       html: '<div>testing</div>',
     });
 
-      return d.promise();
+    mock.onGet('http://test.host/snippets/1.json?viewer=simple').reply(200, {
+      html: '<div>testing</div>',
     });
+
+    spyOn(axios, 'get').and.callThrough();
   });
 
   afterEach(() => {
+    mock.restore();
     location.hash = '';
   });
 
@@ -30,7 +37,6 @@ describe('Blob viewer', () => {
     document.querySelector('.js-blob-viewer-switch-btn[data-viewer="simple"]').click();
 
     setTimeout(() => {
-      expect($.ajax).toHaveBeenCalled();
       expect(
         document.querySelector('.js-blob-viewer-switch-btn[data-viewer="simple"]')
           .classList.contains('hidden'),
@@ -46,7 +52,6 @@ describe('Blob viewer', () => {
     new BlobViewer();
 
     setTimeout(() => {
-      expect($.ajax).toHaveBeenCalled();
       expect(
         document.querySelector('.js-blob-viewer-switch-btn[data-viewer="simple"]')
           .classList.contains('hidden'),
@@ -64,12 +69,8 @@ describe('Blob viewer', () => {
     });
 
     asyncClick()
+      .then(() => asyncClick())
       .then(() => {
-        expect($.ajax).toHaveBeenCalled();
-        return asyncClick();
-      })
-      .then(() => {
-        expect($.ajax.calls.count()).toBe(1);
         expect(
           document.querySelector('.blob-viewer[data-type="simple"]').getAttribute('data-loaded'),
         ).toBe('true');
@@ -122,7 +123,6 @@ describe('Blob viewer', () => {
       document.querySelector('.js-blob-viewer-switch-btn[data-viewer="simple"]').click();
 
       setTimeout(() => {
-        expect($.ajax).toHaveBeenCalled();
         expect(
           copyButton.classList.contains('disabled'),
         ).toBeFalsy();
@@ -135,8 +135,6 @@ describe('Blob viewer', () => {
       document.querySelector('.js-blob-viewer-switch-btn[data-viewer="simple"]').click();
 
       setTimeout(() => {
-        expect($.ajax).toHaveBeenCalled();
-
         expect(
           copyButton.getAttribute('data-original-title'),
         ).toBe('Copy source to clipboard');
@@ -171,14 +169,14 @@ describe('Blob viewer', () => {
     it('sends AJAX request when switching to simple view', () => {
       blob.switchToViewer('simple');
 
-      expect($.ajax).toHaveBeenCalled();
+      expect(axios.get).toHaveBeenCalled();
     });
 
     it('does not send AJAX request when switching to rich view', () => {
       blob.switchToViewer('simple');
       blob.switchToViewer('rich');
 
-      expect($.ajax.calls.count()).toBe(1);
+      expect(axios.get.calls.count()).toBe(1);
     });
   });
 });

spec/javascripts/commits_spec.js

 import 'vendor/jquery.endless-scroll';
+import MockAdapter from 'axios-mock-adapter';
+import axios from '~/lib/utils/axios_utils';
 import CommitsList from '~/commits';
 
 describe('Commits List', () => {
@@ -43,30 +45,47 @@ describe('Commits List', () => {
 
   describe('on entering input', () => {
     let ajaxSpy;
+    let mock;
 
     beforeEach(() => {
       CommitsList.init(25);
       CommitsList.searchField.val('');
 
       spyOn(history, 'replaceState').and.stub();
-      ajaxSpy = spyOn(jQuery, 'ajax').and.callFake((req) => {
-        req.success({
-          data: '<li>Result</li>',
+      mock = new MockAdapter(axios);
+
+      mock.onGet('/h5bp/html5-boilerplate/commits/master').reply(200, {
+        html: '<li>Result</li>',
       });
+
+      ajaxSpy = spyOn(axios, 'get').and.callThrough();
     });
+
+    afterEach(() => {
+      mock.restore();
     });
 
-    it('should save the last search string', () => {
+    it('should save the last search string', (done) => {
       CommitsList.searchField.val('GitLab');
-      CommitsList.filterResults();
+      CommitsList.filterResults()
+        .then(() => {
           expect(ajaxSpy).toHaveBeenCalled();
           expect(CommitsList.lastSearch).toEqual('GitLab');
+
+          done();
+        })
+        .catch(done.fail);
     });
 
-    it('should not make ajax call if the input does not change', () => {
-      CommitsList.filterResults();
+    it('should not make ajax call if the input does not change', (done) => {
+      CommitsList.filterResults()
+        .then(() => {
           expect(ajaxSpy).not.toHaveBeenCalled();
           expect(CommitsList.lastSearch).toEqual('');
+
+          done();
+        })
+        .catch(done.fail);
     });
   });
 });

spec/javascripts/create_item_dropdown_spec.js

@@ -18,13 +18,36 @@ describe('CreateItemDropdown', () => {
   preloadFixtures('static/create_item_dropdown.html.raw');
 
   let $wrapperEl;
+  let createItemDropdown;
+
+  function createItemAndClearInput(text) {
+    // Filter for the new item
+    $wrapperEl.find('.dropdown-input-field')
+      .val(text)
+      .trigger('input');
+
+    // Create the new item
+    const $createButton = $wrapperEl.find('.js-dropdown-create-new-item');
+    $createButton.click();
+
+    // Clear out the filter
+    $wrapperEl.find('.dropdown-input-field')
+      .val('')
+      .trigger('input');
+  }
 
   beforeEach(() => {
     loadFixtures('static/create_item_dropdown.html.raw');
     $wrapperEl = $('.js-create-item-dropdown-fixture-root');
+  });
 
-    // eslint-disable-next-line no-new
-    new CreateItemDropdown({
+  afterEach(() => {
+    $wrapperEl.remove();
+  });
+
+  describe('items', () => {
+    beforeEach(() => {
+      createItemDropdown = new CreateItemDropdown({
         $dropdown: $wrapperEl.find('.js-dropdown-menu-toggle'),
         defaultToggleLabel: 'All variables',
         fieldName: 'variable[environment]',
@@ -34,10 +57,6 @@ describe('CreateItemDropdown', () => {
       });
     });
 
-  afterEach(() => {
-    $wrapperEl.remove();
-  });
-
     it('should have a dropdown item for each piece of data', () => {
       // Get the data in the dropdown
       $('.js-dropdown-menu-toggle').click();
@@ -45,27 +64,21 @@ describe('CreateItemDropdown', () => {
       const $itemEls = $wrapperEl.find('.js-dropdown-content a');
       expect($itemEls.length).toEqual(DROPDOWN_ITEM_DATA.length);
     });
+  });
 
   describe('created items', () => {
     const NEW_ITEM_TEXT = 'foobarbaz';
 
-    function createItemAndClearInput(text) {
-      // Filter for the new item
-      $wrapperEl.find('.dropdown-input-field')
-        .val(text)
-        .trigger('input');
-
-      // Create the new item
-      const $createButton = $wrapperEl.find('.js-dropdown-create-new-item');
-      $createButton.click();
-
-      // Clear out the filter
-      $wrapperEl.find('.dropdown-input-field')
-        .val('')
-        .trigger('input');
-    }
-
     beforeEach(() => {
+      createItemDropdown = new CreateItemDropdown({
+        $dropdown: $wrapperEl.find('.js-dropdown-menu-toggle'),
+        defaultToggleLabel: 'All variables',
+        fieldName: 'variable[environment]',
+        getData: (term, callback) => {
+          callback(DROPDOWN_ITEM_DATA);
+        },
+      });
+
       // Open the dropdown
       $('.js-dropdown-menu-toggle').click();
 
@@ -103,4 +116,68 @@ describe('CreateItemDropdown', () => {
       expect($itemEls.length).toEqual(DROPDOWN_ITEM_DATA.length);
     });
   });
+
+  describe('clearDropdown()', () => {
+    beforeEach(() => {
+      createItemDropdown = new CreateItemDropdown({
+        $dropdown: $wrapperEl.find('.js-dropdown-menu-toggle'),
+        defaultToggleLabel: 'All variables',
+        fieldName: 'variable[environment]',
+        getData: (term, callback) => {
+          callback(DROPDOWN_ITEM_DATA);
+        },
+      });
+    });
+
+    it('should clear all data and filter input', () => {
+      const filterInput = $wrapperEl.find('.dropdown-input-field');
+
+      // Get the data in the dropdown
+      $('.js-dropdown-menu-toggle').click();
+
+      // Filter for an item
+      filterInput
+        .val('one')
+        .trigger('input');
+
+      const $itemElsAfterFilter = $wrapperEl.find('.js-dropdown-content a');
+      expect($itemElsAfterFilter.length).toEqual(1);
+
+      createItemDropdown.clearDropdown();
+
+      const $itemElsAfterClear = $wrapperEl.find('.js-dropdown-content a');
+      expect($itemElsAfterClear.length).toEqual(0);
+      expect(filterInput.val()).toEqual('');
+    });
+  });
+
+  describe('createNewItemFromValue option', () => {
+    beforeEach(() => {
+      createItemDropdown = new CreateItemDropdown({
+        $dropdown: $wrapperEl.find('.js-dropdown-menu-toggle'),
+        defaultToggleLabel: 'All variables',
+        fieldName: 'variable[environment]',
+        getData: (term, callback) => {
+          callback(DROPDOWN_ITEM_DATA);
+        },
+        createNewItemFromValue: newValue => ({
+          title: `${newValue}-title`,
+          id: `${newValue}-id`,
+          text: `${newValue}-text`,
+        }),
+      });
+    });
+
+    it('all items go through createNewItemFromValue', () => {
+      // Get the data in the dropdown
+      $('.js-dropdown-menu-toggle').click();
+
+      createItemAndClearInput('new-item');
+
+      const $itemEls = $wrapperEl.find('.js-dropdown-content a');
+      expect($itemEls.length).toEqual(1 + DROPDOWN_ITEM_DATA.length);
+      expect($($itemEls[3]).text()).toEqual('new-item-text');
+      expect($wrapperEl.find('.dropdown-toggle-text').text()).toEqual('new-item-title');
+    });
+  });
 });

spec/javascripts/integrations/integration_settings_form_spec.js

+import MockAdaptor from 'axios-mock-adapter';
+import axios from '~/lib/utils/axios_utils';
 import IntegrationSettingsForm from '~/integrations/integration_settings_form';
 
 describe('IntegrationSettingsForm', () => {
@@ -109,91 +111,117 @@ describe('IntegrationSettingsForm', () => {
   describe('testSettings', () => {
     let integrationSettingsForm;
     let formData;
+    let mock;
 
     beforeEach(() => {
+      mock = new MockAdaptor(axios);
+
+      spyOn(axios, 'put').and.callThrough();
+
       integrationSettingsForm = new IntegrationSettingsForm('.js-integration-settings-form');
       formData = integrationSettingsForm.$form.serialize();
     });
 
-    it('should make an ajax request with provided `formData`', () => {
-      const deferred = $.Deferred();
-      spyOn($, 'ajax').and.returnValue(deferred.promise());
+    afterEach(() => {
+      mock.restore();
+    });
 
-      integrationSettingsForm.testSettings(formData);
+    it('should make an ajax request with provided `formData`', (done) => {
+      integrationSettingsForm.testSettings(formData)
+        .then(() => {
+          expect(axios.put).toHaveBeenCalledWith(integrationSettingsForm.testEndPoint, formData);
 
-      expect($.ajax).toHaveBeenCalledWith({
-        type: 'PUT',
-        url: integrationSettingsForm.testEndPoint,
-        data: formData,
-      });
+          done();
+        })
+        .catch(done.fail);
     });
 
-    it('should show error Flash with `Save anyway` action if ajax request responds with error in test', () => {
+    it('should show error Flash with `Save anyway` action if ajax request responds with error in test', (done) => {
       const errorMessage = 'Test failed.';
-      const deferred = $.Deferred();
-      spyOn($, 'ajax').and.returnValue(deferred.promise());
-
-      integrationSettingsForm.testSettings(formData);
-
-      deferred.resolve({ error: true, message: errorMessage, service_response: 'some error' });
+      mock.onPut(integrationSettingsForm.testEndPoint).reply(200, {
+        error: true,
+        message: errorMessage,
+        service_response: 'some error',
+      });
 
+      integrationSettingsForm.testSettings(formData)
+        .then(() => {
           const $flashContainer = $('.flash-container');
           expect($flashContainer.find('.flash-text').text().trim()).toEqual('Test failed. some error');
           expect($flashContainer.find('.flash-action')).toBeDefined();
           expect($flashContainer.find('.flash-action').text().trim()).toEqual('Save anyway');
-    });
-
-    it('should submit form if ajax request responds without any error in test', () => {
-      const deferred = $.Deferred();
-      spyOn($, 'ajax').and.returnValue(deferred.promise());
 
-      integrationSettingsForm.testSettings(formData);
+          done();
+        })
+        .catch(done.fail);
+    });
 
+    it('should submit form if ajax request responds without any error in test', (done) => {
       spyOn(integrationSettingsForm.$form, 'submit');
-      deferred.resolve({ error: false });
 
-      expect(integrationSettingsForm.$form.submit).toHaveBeenCalled();
+      mock.onPut(integrationSettingsForm.testEndPoint).reply(200, {
+        error: false,
       });
 
-    it('should submit form when clicked on `Save anyway` action of error Flash', () => {
-      const errorMessage = 'Test failed.';
-      const deferred = $.Deferred();
-      spyOn($, 'ajax').and.returnValue(deferred.promise());
+      integrationSettingsForm.testSettings(formData)
+        .then(() => {
+          expect(integrationSettingsForm.$form.submit).toHaveBeenCalled();
+
+          done();
+        })
+        .catch(done.fail);
+    });
 
-      integrationSettingsForm.testSettings(formData);
+    it('should submit form when clicked on `Save anyway` action of error Flash', (done) => {
+      spyOn(integrationSettingsForm.$form, 'submit');
 
-      deferred.resolve({ error: true, message: errorMessage });
+      const errorMessage = 'Test failed.';
+      mock.onPut(integrationSettingsForm.testEndPoint).reply(200, {
+        error: true,
+        message: errorMessage,
+      });
 
+      integrationSettingsForm.testSettings(formData)
+        .then(() => {
           const $flashAction = $('.flash-container .flash-action');
           expect($flashAction).toBeDefined();
 
-      spyOn(integrationSettingsForm.$form, 'submit');
           $flashAction.get(0).click();
+        })
+        .then(() => {
           expect(integrationSettingsForm.$form.submit).toHaveBeenCalled();
+
+          done();
+        })
+        .catch(done.fail);
     });
 
-    it('should show error Flash if ajax request failed', () => {
+    it('should show error Flash if ajax request failed', (done) => {
       const errorMessage = 'Something went wrong on our end.';
-      const deferred = $.Deferred();
-      spyOn($, 'ajax').and.returnValue(deferred.promise());
-
-      integrationSettingsForm.testSettings(formData);
 
-      deferred.reject();
+      mock.onPut(integrationSettingsForm.testEndPoint).networkError();
 
+      integrationSettingsForm.testSettings(formData)
+        .then(() => {
           expect($('.flash-container .flash-text').text().trim()).toEqual(errorMessage);
-    });
 
-    it('should always call `toggleSubmitBtnState` with `false` once request is completed', () => {
-      const deferred = $.Deferred();
-      spyOn($, 'ajax').and.returnValue(deferred.promise());
+          done();
+        })
+        .catch(done.fail);
+    });
 
-      integrationSettingsForm.testSettings(formData);
+    it('should always call `toggleSubmitBtnState` with `false` once request is completed', (done) => {
+      mock.onPut(integrationSettingsForm.testEndPoint).networkError();
 
       spyOn(integrationSettingsForm, 'toggleSubmitBtnState');
-      deferred.reject();
 
+      integrationSettingsForm.testSettings(formData)
+        .then(() => {
           expect(integrationSettingsForm.toggleSubmitBtnState).toHaveBeenCalledWith(false);
+
+          done();
+        })
+        .catch(done.fail);
     });
   });
 });

spec/javascripts/issuable_spec.js

+import MockAdaptor from 'axios-mock-adapter';
+import axios from '~/lib/utils/axios_utils';
 import IssuableIndex from '~/issuable_index';
 
 describe('Issuable', () => {
@@ -19,6 +21,8 @@ describe('Issuable', () => {
   });
 
   describe('resetIncomingEmailToken', () => {
+    let mock;
+
     beforeEach(() => {
       const element = document.createElement('a');
       element.classList.add('incoming-email-token-reset');
@@ -30,14 +34,28 @@ describe('Issuable', () => {
       document.body.appendChild(input);
 
       Issuable = new IssuableIndex('issue_');
+
+      mock = new MockAdaptor(axios);
+
+      mock.onPut('foo').reply(200, {
+        new_address: 'testing123',
+      });
     });
 
-    it('should send request to reset email token', () => {
-      spyOn(jQuery, 'ajax').and.callThrough();
+    afterEach(() => {
+      mock.restore();
+    });
+
+    it('should send request to reset email token', (done) => {
+      spyOn(axios, 'put').and.callThrough();
       document.querySelector('.incoming-email-token-reset').click();
 
-      expect(jQuery.ajax).toHaveBeenCalled();
-      expect(jQuery.ajax.calls.argsFor(0)[0].url).toEqual('foo');
+      setTimeout(() => {
+        expect(axios.put).toHaveBeenCalledWith('foo');
+        expect($('#issuable_email').val()).toBe('testing123');
+
+        done();
+      });
     });
   });
 });

spec/javascripts/lib/utils/common_utils_spec.js

 /* eslint-disable promise/catch-or-return */
 import axios from '~/lib/utils/axios_utils';
 import * as commonUtils from '~/lib/utils/common_utils';
+import axios from '~/lib/utils/axios_utils';
+import MockAdapter from 'axios-mock-adapter';
 
 describe('common_utils', () => {
   describe('parseUrl', () => {
@@ -413,37 +415,48 @@ describe('common_utils', () => {
 
   describe('setCiStatusFavicon', () => {
     const BUILD_URL = `${gl.TEST_HOST}/frontend-fixtures/builds-project/-/jobs/1/status.json`;
+    let mock;
 
     beforeEach(() => {
       const favicon = document.createElement('link');
       favicon.setAttribute('id', 'favicon');
       document.body.appendChild(favicon);
+      mock = new MockAdapter(axios);
     });
 
     afterEach(() => {
+      mock.restore();
       document.body.removeChild(document.getElementById('favicon'));
     });
 
-    it('should reset favicon in case of error', () => {
+    it('should reset favicon in case of error', (done) => {
+      mock.onGet(BUILD_URL).networkError();
+
+      commonUtils.setCiStatusFavicon(BUILD_URL)
+        .then(() => {
           const favicon = document.getElementById('favicon');
-      spyOn($, 'ajax').and.callFake(function (options) {
-        options.error();
           expect(favicon.getAttribute('href')).toEqual('null');
+          done();
+        })
+        // Error is already caught in catch() block of setCiStatusFavicon,
+        // It won't throw another error for us to catch
+        .catch(done.fail);
     });
 
-      commonUtils.setCiStatusFavicon(BUILD_URL);
-    });
-
-    it('should set page favicon to CI status favicon based on provided status', () => {
+    it('should set page favicon to CI status favicon based on provided status', (done) => {
       const FAVICON_PATH = '//icon_status_success';
-      const favicon = document.getElementById('favicon');
 
-      spyOn($, 'ajax').and.callFake(function (options) {
-        options.success({ favicon: FAVICON_PATH });
-        expect(favicon.getAttribute('href')).toEqual(FAVICON_PATH);
+      mock.onGet(BUILD_URL).reply(200, {
+        favicon: FAVICON_PATH,
       });
 
-      commonUtils.setCiStatusFavicon(BUILD_URL);
+      commonUtils.setCiStatusFavicon(BUILD_URL)
+        .then(() => {
+          const favicon = document.getElementById('favicon');
+          expect(favicon.getAttribute('href')).toEqual(FAVICON_PATH);
+          done();
+        })
+        .catch(done.fail);
     });
   });