Merge branch 'master' into 34312-eslint-vue-plugin

* master: (33 commits) Include integration tests in CE/EE testing documentation 41054-Disallow creation of new Kubernetes integrations Resolve "Resizable file list and commit panel" Make tooltip placement bottom by default as per design guidelines Fix groups list icon, timestamp alignment and row height Avoid leaving a push event empty if payload cannot be created Use heredoc for long strings so it's easier to read Simplify metrics fetching for closed/merged MRs Better English Fix method lookup Use a background migration for issues.closed_at Handle Gitaly aborted merge due to branch update Fix API endpoints to edit wiki pages where project belongs to a group Fixes spec failures due to not returning metrics for MRs other than closed/merged Cache merged and closed events data in merge_request_metrics table Update test to remove carent icon check Update styles to fix SVG caret alignment Update selector to test SVG icon name Use SVG sprite icons Add support for max_count option to Git::Repository#count_commits ...

Merge branch 'master' into 34312-eslint-vue-plugin
* master: (33 commits) Include integration tests in CE/EE testing documentation 41054-Disallow creation of new Kubernetes integrations Resolve "Resizable file list and commit panel" Make tooltip placement bottom by default as per design guidelines Fix groups list icon, timestamp alignment and row height Avoid leaving a push event empty if payload cannot be created Use heredoc for long strings so it's easier to read Simplify metrics fetching for closed/merged MRs Better English Fix method lookup Use a background migration for issues.closed_at Handle Gitaly aborted merge due to branch update Fix API endpoints to edit wiki pages where project belongs to a group Fixes spec failures due to not returning metrics for MRs other than closed/merged Cache merged and closed events data in merge_request_metrics table Update test to remove carent icon check Update styles to fix SVG caret alignment Update selector to test SVG icon name Use SVG sprite icons Add support for max_count option to Git::Repository#count_commits ...
41cc4cf5 · Filipa Lacerda · bb7e04a1 · 1e950e31 · 41cc4cf5 · 41cc4cf5
Commit 41cc4cf5 authored Jan 04, 2018 by Filipa Lacerda
107 changed files
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -553,7 +553,7 @@ the feature you contribute through all of these steps.

 1. Description explaining the relevancy (see following item)
 1. Working and clean code that is commented where needed
-1. [Unit and system tests][testing] that pass on the CI server
+1. [Unit, integration, and system tests][testing] that pass on the CI server
 1. Performance/scalability implications have been considered, addressed, and tested
 1. [Documented][doc-styleguide] in the `/doc` directory
 1. [Changelog entry added][changelog], if necessary

--- a/app/assets/javascripts/groups/components/group_item.vue
+++ b/app/assets/javascripts/groups/components/group_item.vue
@@ -77,7 +77,8 @@ export default {
    class="group-row"
    >
    <div
-      class="group-row-contents">
+      class="group-row-contents"
+      :class="{ 'project-row-contents': !isGroup }">
      <item-actions
        v-if="isGroup"
        :group="group"
@@ -97,7 +98,7 @@ export default {
        />
      </div>
      <div
-        class="avatar-container s40 hidden-xs"
+        class="avatar-container prepend-top-8 prepend-left-5 s24 hidden-xs"
        :class="{ 'content-loading': group.isChildrenLoading }"
      >
        <a
@@ -106,11 +107,12 @@ export default {
        >
          <img
            v-if="hasAvatar"
-            class="avatar s40"
+            class="avatar s24"
            :src="group.avatarUrl"
          />
          <identicon
            v-else
+            size-class="s24"
            :entity-id=group.id
            :entity-name="group.name"
          />
@@ -123,7 +125,7 @@ export default {
          :href="group.relativePath"
          :title="group.fullName"
          class="no-expand"
-          data-placement="top"
+          data-placement="bottom"
        >{{
          // ending bracket must be by closing tag to prevent
          // link hover text-decoration from over-extending

--- a/app/assets/javascripts/groups/components/item_actions.vue
+++ b/app/assets/javascripts/groups/components/item_actions.vue
 <script>
-import { s__ } from '../../locale';
-import tooltip from '../../vue_shared/directives/tooltip';
-import modal from '../../vue_shared/components/modal.vue';
+import { s__ } from '~/locale';
+import tooltip from '~/vue_shared/directives/tooltip';
+import icon from '~/vue_shared/components/icon.vue';
+import modal from '~/vue_shared/components/modal.vue';
 import eventHub from '../event_hub';
 import { COMMON_STR } from '../constants';
-import Icon from '../../vue_shared/components/icon.vue';

 export default {
  components: {
-    Icon,
+    icon,
    modal,
  },
  directives: {
@@ -64,10 +64,9 @@ export default {
      :title="editBtnTitle"
      :aria-label="editBtnTitle"
      data-container="body"
+      data-placement="bottom"
      class="edit-group btn no-expand">
-      <icon
-        name="settings">
-      </icon>
+      <icon name="settings"/>
    </a>
    <a
      v-tooltip
@@ -77,10 +76,9 @@ export default {
      :title="leaveBtnTitle"
      :aria-label="leaveBtnTitle"
      data-container="body"
+      data-placement="bottom"
      class="leave-group btn no-expand">
-      <i
-        class="fa fa-sign-out"
-        aria-hidden="true"/>
+      <icon name="leave"/>
    </a>
    <modal
      v-show="modalStatus"

--- a/app/assets/javascripts/groups/components/item_caret.vue
+++ b/app/assets/javascripts/groups/components/item_caret.vue
 <script>
+import icon from '~/vue_shared/components/icon.vue';
+
 export default {
  props: {
    isGroupOpen: {
@@ -7,9 +9,12 @@ export default {
      default: false,
    },
  },
+  components: {
+    icon,
+  },
  computed: {
    iconClass() {
-      return this.isGroupOpen ? 'fa-caret-down' : 'fa-caret-right';
+      return this.isGroupOpen ? 'angle-down' : 'angle-right';
    },
  },
 };
@@ -17,9 +22,9 @@ export default {

 <template>
  <span class="folder-caret">
-    <i
-      :class="iconClass"
-      class="fa"
-      aria-hidden="true"/>
+    <icon
+      :size="12"
+      :name="iconClass"
+    />
  </span>
 </template>
--- a/app/assets/javascripts/groups/components/item_stats.vue
+++ b/app/assets/javascripts/groups/components/item_stats.vue
 <script>
-import tooltip from '../../vue_shared/directives/tooltip';
+import icon from '~/vue_shared/components/icon.vue';
+import timeAgoTooltip from '~/vue_shared/components/time_ago_tooltip.vue';
 import {
  ITEM_TYPE,
  VISIBILITY_TYPE_ICON,
  GROUP_VISIBILITY_TYPE,
-  PROJECT_VISIBILITY_TYPE,
+  PROJECT_VISIBILITY_TYPE
 } from '../constants';
+import itemStatsValue from './item_stats_value.vue';

 export default {
-  directives: {
-    tooltip,
+  components: {
+    icon,
+    timeAgoTooltip,
+    itemStatsValue,
  },
  props: {
    item: {
@@ -39,65 +43,47 @@ export default {

 <template>
  <div class="stats">
-    <span
-      v-tooltip
+    <item-stats-value
      v-if="isGroup"
+      css-class="number-subgroups"
+      icon-name="folder"
      :title="s__('Subgroups')"
-      class="number-subgroups"
-      data-placement="top"
-      data-container="body">
-      <i
-        class="fa fa-folder"
-        aria-hidden="true"
+      :value=item.subgroupCount
    />
-      {{item.subgroupCount}}
-    </span>
-    <span
-      v-tooltip
+    <item-stats-value
      v-if="isGroup"
+      css-class="number-projects"
+      icon-name="bookmark"
      :title="s__('Projects')"
-      class="number-projects"
-      data-placement="top"
-      data-container="body">
-      <i
-        class="fa fa-bookmark"
-        aria-hidden="true"
+      :value=item.projectCount
    />
-      {{item.projectCount}}
-    </span>
-    <span
-      v-tooltip
+    <item-stats-value
      v-if="isGroup"
+      css-class="number-users"
+      icon-name="users"
      :title="s__('Members')"
-      class="number-users"
-      data-placement="top"
-      data-container="body">
-      <i
-        class="fa fa-users"
-        aria-hidden="true"
+      :value=item.memberCount
    />
-      {{item.memberCount}}
-    </span>
-    <span
+    <item-stats-value
      v-if="isProject"
-      class="project-stars">
-      <i
-        class="fa fa-star"
-        aria-hidden="true"
+      css-class="project-stars"
+      icon-name="star"
+      :value=item.starCount
    />
-      {{item.starCount}}
-    </span>
-    <span
-      v-tooltip
+    <item-stats-value
+      css-class="item-visibility"
+      tooltip-placement="left"
+      :icon-name="visibilityIcon"
      :title="visibilityTooltip"
-      data-placement="left"
-      data-container="body"
-      class="item-visibility">
-      <i
-        :class="visibilityIcon"
-        class="fa"
-        aria-hidden="true"
    />
-    </span>
+    <div
+      class="last-updated"
+      v-if="isProject"
+    >
+      <time-ago-tooltip
+        tooltip-placement="bottom"
+        :time="item.updatedAt"
+      />
+    </div>
  </div>
 </template>
--- a/app/assets/javascripts/groups/components/item_stats_value.vue
+++ b/app/assets/javascripts/groups/components/item_stats_value.vue
+<script>
+import tooltip from '~/vue_shared/directives/tooltip';
+import icon from '~/vue_shared/components/icon.vue';
+
+export default {
+  props: {
+    title: {
+      type: String,
+      required: false,
+      default: '',
+    },
+    cssClass: {
+      type: String,
+      required: false,
+      default: '',
+    },
+    iconName: {
+      type: String,
+      required: true,
+    },
+    tooltipPlacement: {
+      type: String,
+      required: false,
+      default: 'bottom',
+    },
+    /**
+     * value could either be number or string
+     * as `memberCount` is always passed as string
+     * while `subgroupCount` & `projectCount`
+     * are always number
+     */
+    value: {
+      type: [Number, String],
+      required: false,
+      default: '',
+    },
+  },
+  directives: {
+    tooltip,
+  },
+  components: {
+    icon,
+  },
+  computed: {
+    isValuePresent() {
+      return this.value !== '';
+    },
+  },
+};
+</script>
+
+<template>
+  <span
+    v-tooltip
+    data-container="body"
+    :data-placement="tooltipPlacement"
+    :class="cssClass"
+    :title="title"
+  >
+    <icon :name="iconName"/>
+    <span
+      v-if="isValuePresent"
+      class="stat-value"
+    >
+      {{value}}
+    </span>
+  </span>
+</template>
--- a/app/assets/javascripts/groups/components/item_type_icon.vue
+++ b/app/assets/javascripts/groups/components/item_type_icon.vue
 <script>
+import icon from '~/vue_shared/components/icon.vue';
 import { ITEM_TYPE } from '../constants';

 export default {
+  components: {
+    icon,
+  },
  props: {
    itemType: {
      type: String,
@@ -16,9 +20,9 @@ export default {
  computed: {
    iconClass() {
      if (this.itemType === ITEM_TYPE.GROUP) {
-        return this.isGroupOpen ? 'fa-folder-open' : 'fa-folder';
+        return this.isGroupOpen ? 'folder-open' : 'folder';
      }
-      return 'fa-bookmark';
+      return 'bookmark';
    },
  },
 };
@@ -26,9 +30,6 @@ export default {

 <template>
  <span class="item-type-icon">
-    <i
-      :class="iconClass"
-      class="fa"
-      aria-hidden="true"/>
+    <icon :name="iconClass"/>
  </span>
 </template>
--- a/app/assets/javascripts/groups/constants.js
+++ b/app/assets/javascripts/groups/constants.js
@@ -29,7 +29,7 @@ export const PROJECT_VISIBILITY_TYPE = {
 };

 export const VISIBILITY_TYPE_ICON = {
-  public: 'fa-globe',
-  internal: 'fa-shield',
-  private: 'fa-lock',
+  public: 'earth',
+  internal: 'shield',
+  private: 'lock',
 };
--- a/app/assets/javascripts/groups/store/groups_store.js
+++ b/app/assets/javascripts/groups/store/groups_store.js
@@ -91,6 +91,7 @@ export default class GroupsStore {
      subgroupCount: rawGroupItem.subgroup_count,
      memberCount: rawGroupItem.number_users_with_delimiter,
      starCount: rawGroupItem.star_count,
+      updatedAt: rawGroupItem.updated_at,
    };
  }


--- a/app/assets/javascripts/ide/components/ide_context_bar.vue
+++ b/app/assets/javascripts/ide/components/ide_context_bar.vue
@@ -2,11 +2,18 @@
 import { mapGetters, mapState, mapActions } from 'vuex';
 import repoCommitSection from './repo_commit_section.vue';
 import icon from '../../vue_shared/components/icon.vue';
+import panelResizer from '../../vue_shared/components/panel_resizer.vue';

 export default {
+  data() {
+    return {
+      width: 290,
+    };
+  },
  components: {
    repoCommitSection,
    icon,
+    panelResizer,
  },
  computed: {
    ...mapState([
@@ -18,10 +25,20 @@ export default {
    currentIcon() {
      return this.rightPanelCollapsed ? 'angle-double-left' : 'angle-double-right';
    },
+    maxSize() {
+      return window.innerWidth / 2;
+    },
+    panelStyle() {
+      if (!this.rightPanelCollapsed) {
+        return { width: `${this.width}px` };
+      }
+      return {};
+    },
  },
  methods: {
    ...mapActions([
      'setPanelCollapsedStatus',
+      'setResizingStatus',
    ]),
    toggleCollapsed() {
      this.setPanelCollapsedStatus({
@@ -29,6 +46,12 @@ export default {
        collapsed: !this.rightPanelCollapsed,
      });
    },
+    resizingStarted() {
+      this.setResizingStatus(true);
+    },
+    resizingEnded() {
+      this.setResizingStatus(false);
+    },
  },
 };
 </script>
@@ -39,6 +62,7 @@ export default {
    :class="{
      'is-collapsed': rightPanelCollapsed,
    }"
+    :style="panelStyle"
  >
    <div 
      class="multi-file-commit-panel-section">
@@ -71,5 +95,14 @@ export default {
      <repo-commit-section 
        class=""/>
    </div>
+    <panel-resizer
+      :size.sync="width"
+      :enabled="!rightPanelCollapsed"
+      :start-size="290"
+      :min-size="200"
+      :max-size="maxSize"
+      @resize-start="resizingStarted"
+      @resize-end="resizingEnded"
+      side="left"/>
  </div>
 </template>
--- a/app/assets/javascripts/ide/components/ide_side_bar.vue
+++ b/app/assets/javascripts/ide/components/ide_side_bar.vue
@@ -2,11 +2,18 @@
 import { mapState, mapActions } from 'vuex';
 import projectTree from './ide_project_tree.vue';
 import icon from '../../vue_shared/components/icon.vue';
+import panelResizer from '../../vue_shared/components/panel_resizer.vue';

 export default {
+  data() {
+    return {
+      width: 290,
+    };
+  },
  components: {
    projectTree,
    icon,
+    panelResizer,
  },
  computed: {
    ...mapState([
@@ -16,10 +23,20 @@ export default {
    currentIcon() {
      return this.leftPanelCollapsed ? 'angle-double-right' : 'angle-double-left';
    },
+    maxSize() {
+      return window.innerWidth / 2;
+    },
+    panelStyle() {
+      if (!this.leftPanelCollapsed) {
+        return { width: `${this.width}px` };
+      }
+      return {};
+    },
  },
  methods: {
    ...mapActions([
      'setPanelCollapsedStatus',
+      'setResizingStatus',
    ]),
    toggleCollapsed() {
      this.setPanelCollapsedStatus({
@@ -27,6 +44,12 @@ export default {
        collapsed: !this.leftPanelCollapsed,
      });
    },
+    resizingStarted() {
+      this.setResizingStatus(true);
+    },
+    resizingEnded() {
+      this.setResizingStatus(false);
+    },
  },
 };
 </script>
@@ -37,6 +60,7 @@ export default {
      :class="{
        'is-collapsed': leftPanelCollapsed,
      }"
+      :style="panelStyle"
    >
    <div class="multi-file-commit-panel-inner">
      <project-tree
@@ -58,5 +82,14 @@ export default {
        class="collapse-text"
      >Collapse sidebar</span>
    </button>
+    <panel-resizer
+      :size.sync="width"
+      :enabled="!leftPanelCollapsed"
+      :start-size="290"
+      :min-size="200"
+      :max-size="maxSize"
+      @resize-start="resizingStarted"
+      @resize-end="resizingEnded"
+      side="right"/>
  </div>
 </template>
--- a/app/assets/javascripts/ide/components/repo_editor.vue
+++ b/app/assets/javascripts/ide/components/repo_editor.vue
@@ -90,6 +90,11 @@ export default {
    rightPanelCollapsed() {
      this.editor.updateDimensions();
    },
+    panelResizing(isResizing) {
+      if (isResizing === false) {
+        this.editor.updateDimensions();
+      }
+    },
  },
  computed: {
    ...mapGetters([
@@ -99,6 +104,7 @@ export default {
    ...mapState([
      'leftPanelCollapsed',
      'rightPanelCollapsed',
+      'panelResizing',
    ]),
    shouldHideEditor() {
      return this.activeFile.binary && !this.activeFile.raw;

--- a/app/assets/javascripts/ide/stores/actions.js
+++ b/app/assets/javascripts/ide/stores/actions.js
@@ -63,6 +63,10 @@ export const setPanelCollapsedStatus = ({ commit }, { side, collapsed }) => {
  }
 };

+export const setResizingStatus = ({ commit }, resizing) => {
+  commit(types.SET_RESIZING_STATUS, resizing);
+};
+
 export const checkCommitStatus = ({ state }) =>
  service
    .getBranchData(state.currentProjectId, state.currentBranchId)

--- a/app/assets/javascripts/ide/stores/mutation_types.js
+++ b/app/assets/javascripts/ide/stores/mutation_types.js
@@ -5,6 +5,7 @@ export const SET_ROOT = 'SET_ROOT';
 export const SET_LAST_COMMIT_DATA = 'SET_LAST_COMMIT_DATA';
 export const SET_LEFT_PANEL_COLLAPSED = 'SET_LEFT_PANEL_COLLAPSED';
 export const SET_RIGHT_PANEL_COLLAPSED = 'SET_RIGHT_PANEL_COLLAPSED';
+export const SET_RESIZING_STATUS = 'SET_RESIZING_STATUS';

 // Project Mutation Types
 export const SET_PROJECT = 'SET_PROJECT';

--- a/app/assets/javascripts/ide/stores/mutations.js
+++ b/app/assets/javascripts/ide/stores/mutations.js
@@ -49,6 +49,11 @@ export default {
      rightPanelCollapsed: collapsed,
    });
  },
+  [types.SET_RESIZING_STATUS](state, resizing) {
+    Object.assign(state, {
+      panelResizing: resizing,
+    });
+  },
  [types.SET_LAST_COMMIT_DATA](state, { entry, lastCommit }) {
    Object.assign(entry.lastCommit, {
      id: lastCommit.commit.id,

--- a/app/assets/javascripts/ide/stores/state.js
+++ b/app/assets/javascripts/ide/stores/state.js
@@ -19,4 +19,5 @@ export default () => ({
  projects: {},
  leftPanelCollapsed: false,
  rightPanelCollapsed: true,
+  panelResizing: false,
 });
--- a/app/assets/javascripts/vue_merge_request_widget/components/states/mr_widget_closed.js
+++ b/app/assets/javascripts/vue_merge_request_widget/components/states/mr_widget_closed.js
@@ -16,9 +16,9 @@ export default {
      <div class="media-body">
        <mr-widget-author-and-time
          actionText="Closed by"
-          :author="mr.closedEvent.author"
-          :dateTitle="mr.closedEvent.updatedAt"
-          :dateReadable="mr.closedEvent.formattedUpdatedAt"
+          :author="mr.metrics.closedBy"
+          :dateTitle="mr.metrics.closedAt"
+          :dateReadable="mr.metrics.readableClosedAt"
        />
        <section class="mr-info-list">
          <p>

--- a/app/assets/javascripts/vue_merge_request_widget/components/states/mr_widget_merged.js
+++ b/app/assets/javascripts/vue_merge_request_widget/components/states/mr_widget_merged.js
@@ -68,9 +68,9 @@ export default {
        <div class="space-children">
          <mr-widget-author-and-time
            actionText="Merged by"
-            :author="mr.mergedEvent.author"
-            :date-title="mr.mergedEvent.updatedAt"
-            :date-readable="mr.mergedEvent.formattedUpdatedAt" />
+            :author="mr.metrics.mergedBy"
+            :date-title="mr.metrics.mergedAt"
+            :date-readable="mr.metrics.readableMergedAt" />
          <a
            v-if="mr.canRevertInCurrentMR"
            v-tooltip

--- a/app/assets/javascripts/vue_merge_request_widget/stores/mr_widget_store.js
+++ b/app/assets/javascripts/vue_merge_request_widget/stores/mr_widget_store.js
@@ -39,9 +39,8 @@ export default class MergeRequestStore {
    }

    this.updatedAt = data.updated_at;
-    this.mergedEvent = MergeRequestStore.getEventObject(data.merge_event);
-    this.closedEvent = MergeRequestStore.getEventObject(data.closed_event);
-    this.setToMWPSBy = MergeRequestStore.getAuthorObject({ author: data.merge_user || {} });
+    this.metrics = MergeRequestStore.buildMetrics(data.metrics);
+    this.setToMWPSBy = MergeRequestStore.formatUserObject(data.merge_user || {});
    this.mergeUserId = data.merge_user_id;
    this.currentUserId = gon.current_user_id;
    this.sourceBranchPath = data.source_branch_path;
@@ -125,43 +124,42 @@ export default class MergeRequestStore {
    return this.state === stateKey.nothingToMerge;
  }

-  static getEventObject(event) {
+  static buildMetrics(metrics) {
+    if (!metrics) {
+      return {};
+    }
+
    return {
-      author: MergeRequestStore.getAuthorObject(event),
-      updatedAt: formatDate(MergeRequestStore.getEventUpdatedAtDate(event)),
-      formattedUpdatedAt: MergeRequestStore.getEventDate(event),
+      mergedBy: MergeRequestStore.formatUserObject(metrics.merged_by),
+      closedBy: MergeRequestStore.formatUserObject(metrics.closed_by),
+      mergedAt: formatDate(metrics.merged_at),
+      closedAt: formatDate(metrics.closed_at),
+      readableMergedAt: MergeRequestStore.getReadableDate(metrics.merged_at),
+      readableClosedAt: MergeRequestStore.getReadableDate(metrics.closed_at),
    };
  }

-  static getAuthorObject(event) {
-    if (!event) {
+  static formatUserObject(user) {
+    if (!user) {
      return {};
    }

    return {
-      name: event.author.name || '',
-      username: event.author.username || '',
-      webUrl: event.author.web_url || '',
-      avatarUrl: event.author.avatar_url || '',
+      name: user.name || '',
+      username: user.username || '',
+      webUrl: user.web_url || '',
+      avatarUrl: user.avatar_url || '',
    };
  }

-  static getEventUpdatedAtDate(event) {
-    if (!event) {
+  static getReadableDate(date) {
+    if (!date) {
      return '';
    }

-    return event.updated_at;
-  }
-
-  static getEventDate(event) {
    const timeagoInstance = new Timeago();

-    if (!event) {
-      return '';
-    }
-
-    return timeagoInstance.format(MergeRequestStore.getEventUpdatedAtDate(event));
+    return timeagoInstance.format(date);
  }

 }
--- a/app/assets/javascripts/vue_shared/components/panel_resizer.vue
+++ b/app/assets/javascripts/vue_shared/components/panel_resizer.vue
+<script>
+export default {
+  props: {
+    startSize: {
+      type: Number,
+      required: true,
+    },
+    side: {
+      type: String,
+      required: true,
+    },
+    minSize: {
+      type: Number,
+      required: false,
+      default: 0,
+    },
+    maxSize: {
+      type: Number,
+      required: false,
+      default: Number.MAX_VALUE,
+    },
+    enabled: {
+      type: Boolean,
+      required: false,
+      default: true,
+    },
+  },
+  data() {
+    return {
+      size: this.startSize,
+    };
+  },
+  computed: {
+    className() {
+      return `drag${this.side}`;
+    },
+    cursorStyle() {
+      if (this.enabled) {
+        return { cursor: 'ew-resize' };
+      }
+      return {};
+    },
+  },
+  methods: {
+    resetSize(e) {
+      e.preventDefault();
+      this.size = this.startSize;
+      this.$emit('update:size', this.size);
+    },
+    startDrag(e) {
+      if (this.enabled) {
+        e.preventDefault();
+        this.startPos = e.clientX;
+        this.currentStartSize = this.size;
+        document.addEventListener('mousemove', this.drag);
+        document.addEventListener('mouseup', this.endDrag, { once: true });
+        this.$emit('resize-start', this.size);
+      }
+    },
+    drag(e) {
+      e.preventDefault();
+      let moved = e.clientX - this.startPos;
+      if (this.side === 'left') moved = -moved;
+      let newSize = this.currentStartSize + moved;
+      if (newSize < this.minSize) {
+        newSize = this.minSize;
+      } else if (newSize > this.maxSize) {
+        newSize = this.maxSize;
+      }
+      this.size = newSize;
+
+      this.$emit('update:size', newSize);
+    },
+    endDrag(e) {
+      e.preventDefault();
+      document.removeEventListener('mousemove', this.drag);
+      this.$emit('resize-end', this.size);
+    },
+  },
+};
+</script>
+
+<template>
+  <div 
+    class="dragHandle"
+    :class="className"
+    :style="cursorStyle"
+    @mousedown="startDrag"
+    @dblclick="resetSize"
+  ></div>
+</template>
--- a/app/assets/stylesheets/framework/avatar.scss
+++ b/app/assets/stylesheets/framework/avatar.scss
@@ -71,7 +71,7 @@
  vertical-align: top;

  &.s16 { font-size: 12px; line-height: 1.33; }
-  &.s24 { font-size: 14px; line-height: 1.8; }
+  &.s24 { font-size: 13px; line-height: 1.8; }
  &.s26 { font-size: 20px; line-height: 1.33; }
  &.s32 { font-size: 20px; line-height: 30px; }
  &.s40 { font-size: 16px; line-height: 38px; }

--- a/app/assets/stylesheets/framework/lists.scss
+++ b/app/assets/stylesheets/framework/lists.scss
@@ -126,10 +126,8 @@ ul.content-list {
    }

    .description {
-      p {
      @include str-truncated;
-        margin-bottom: 0;
-      }
+      color: $gl-text-color-secondary;
    }

    .controls {
@@ -315,7 +313,7 @@ ul.indent-list {
        border: 2px solid $white-normal;

        &.identicon {
-          line-height: 30px;
+          line-height: 15px;
        }
      }
    }
@@ -349,14 +347,19 @@ ul.indent-list {

  .folder-caret {
    width: 15px;
+
+    svg {
+      margin-bottom: 2px;
+    }
  }

  .item-type-icon {
+    margin-top: 2px;
    width: 20px;
  }

  > .group-row:not(.has-children) {
-    .folder-caret .fa {
+    .folder-caret {
      opacity: 0;
    }
  }
@@ -439,12 +442,61 @@ ul.indent-list {

    .avatar-container > a {
      width: 100%;
+      text-decoration: none;
    }

    &.has-more-items {
      display: block;
      padding: 20px 10px;
    }
+
+    .stats {
+      position: relative;
+      line-height: 46px;
+
+      > span {
+        display: inline-flex;
+        align-items: center;
+        height: 16px;
+        min-width: 30px;
+      }
+
+      > span:last-child {
+        margin-right: 0;
+      }
+
+      .stat-value {
+        margin: 2px 0 0 5px;
+      }
+    }
+
+    .controls {
+      margin-left: 5px;
+
+      > .btn {
+        margin-right: $btn-xs-side-margin;
+      }
+    }
+  }
+
+  .project-row-contents .stats {
+    line-height: inherit;
+
+    > span:first-child {
+      margin-left: 25px;
+    }
+
+    .item-visibility {
+      margin-right: 0;
+    }
+
+    .last-updated {
+      position: absolute;
+      right: 12px;
+      min-width: 250px;
+      text-align: right;
+      color: $gl-text-color-secondary;
+    }
  }
 }

@@ -456,12 +508,12 @@ ul.indent-list {

 ul.group-list-tree {
  li.group-row {
-    &.has-description .title {
-      line-height: inherit;
+    > .group-row-contents .title {
+      line-height: $list-text-height;
    }

-    &:not(.has-description) .title {
-      line-height: $list-text-height;
+    &.has-description > .group-row-contents .title {
+      line-height: inherit;
    }
  }
 }

--- a/app/assets/stylesheets/pages/repo.scss
+++ b/app/assets/stylesheets/pages/repo.scss
@@ -36,10 +36,6 @@
  }
 }

-.with-performance-bar .ide-view {
-  height: calc(100vh - #{$header-height});
-}
-
 .ide-file-list {
  flex: 1;

@@ -242,12 +238,13 @@ table.table tr td.multi-file-table-name {

 .multi-file-commit-panel {
  display: flex;
+  position: relative;
  flex-direction: column;
  height: 100%;
  width: 290px;
  padding: 0;
  background-color: $gray-light;
-  border-left: 1px solid $white-dark;
+  padding-right: 3px;

  .projects-sidebar {
    display: flex;
@@ -496,3 +493,30 @@ table.table tr td.multi-file-table-name {
  margin-top: $header-height;
  margin-bottom: 0;
 }
+
+.with-performance-bar {
+  .ide-flash-container.flash-container {
+    margin-top: $header-height + $performance-bar-height;
+  }
+
+  .ide-view {
+    height: calc(100vh - #{$header-height + $performance-bar-height});
+  }
+}
+
+
+.dragHandle {
+  position: absolute;
+  top: 0;
+  bottom: 0;
+  width: 3px;
+  background-color: $white-dark;
+
+  &.dragright {
+    right: 0;
+  }
+
+  &.dragleft {
+    left: 0;
+  }
+}
--- a/app/assets/stylesheets/pages/settings.scss
+++ b/app/assets/stylesheets/pages/settings.scss
@@ -268,3 +268,7 @@
    margin: 0 0 5px 17px;
  }
 }
+
+.deprecated-service {
+  cursor: default;
+}
--- a/app/helpers/services_helper.rb
+++ b/app/helpers/services_helper.rb
@@ -27,5 +27,16 @@ module ServicesHelper
    "#{event}_events"
  end

+  def service_save_button(service)
+    button_tag(class: 'btn btn-save', type: 'submit', disabled: service.deprecated?) do
+      icon('spinner spin', class: 'hidden js-btn-spinner') +
+        content_tag(:span, 'Save changes', class: 'js-btn-label')
+    end
+  end
+
+  def disable_fields_service?(service)
+    !current_controller?("admin/services") && service.deprecated?
+  end
+
  extend self
 end
--- a/app/models/concerns/issuable.rb
+++ b/app/models/concerns/issuable.rb
@@ -96,7 +96,7 @@ module Issuable

    strip_attributes :title

-    after_save :record_metrics, unless: :imported?
+    after_save :ensure_metrics, unless: :imported?

    # We want to use optimistic lock for cases when only title or description are involved
    # http://api.rubyonrails.org/classes/ActiveRecord/Locking/Optimistic.html
@@ -335,11 +335,6 @@ module Issuable
    false
  end

-  def record_metrics
-    metrics = self.metrics || create_metrics
-    metrics.record!
-  end
-
  ##
  # Override in issuable specialization
  #
@@ -347,6 +342,10 @@ module Issuable
    false
  end

+  def ensure_metrics
+    self.metrics || create_metrics
+  end
+
  ##
  # Overriden in MergeRequest
  #

--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -276,6 +276,11 @@ class Issue < ActiveRecord::Base

  private

+  def ensure_metrics
+    super
+    metrics.record!
+  end
+
  # Returns `true` if the given User can read the current Issue.
  #
  # This method duplicates the same check of issue_policy.rb

--- a/app/models/merge_request/metrics.rb
+++ b/app/models/merge_request/metrics.rb
 class MergeRequest::Metrics < ActiveRecord::Base
  belongs_to :merge_request
  belongs_to :pipeline, class_name: 'Ci::Pipeline', foreign_key: :pipeline_id
-
-  def record!
-    if merge_request.merged? && self.merged_at.blank?
-      self.merged_at = Time.now
-    end
-
-    self.save
-  end
+  belongs_to :latest_closed_by, class_name: 'User'
+  belongs_to :merged_by, class_name: 'User'
 end
--- a/app/models/project_services/kubernetes_service.rb
+++ b/app/models/project_services/kubernetes_service.rb
@@ -31,6 +31,7 @@ class KubernetesService < DeploymentService

  before_validation :enforce_namespace_to_lower_case

+  validate :deprecation_validation, unless: :template?
  validates :namespace,
    allow_blank: true,
    length: 1..63,
@@ -145,6 +146,17 @@ class KubernetesService < DeploymentService
    @kubeclient ||= build_kubeclient!
  end

+  def deprecated?
+    !active
+  end
+
+  def deprecation_message
+    content = <<-MESSAGE.strip_heredoc
+    Kubernetes service integration has been deprecated. #{deprecated_message_content} your clusters using the new <a href=\'#{Gitlab::Routing.url_helpers.project_clusters_path(project)}'/>Clusters</a> page
+      MESSAGE
+    content.html_safe
+  end
+
  TEMPLATE_PLACEHOLDER = 'Kubernetes namespace'.freeze

  private
@@ -226,4 +238,20 @@ class KubernetesService < DeploymentService
  def enforce_namespace_to_lower_case
    self.namespace = self.namespace&.downcase
  end
+
+  def deprecation_validation
+    return if active_changed?(from: true, to: false)
+
+    if deprecated?
+      errors[:base] << deprecation_message
+    end
+  end
+
+  def deprecated_message_content
+    if active?
+      "Your cluster information on this page is still editable, but you are advised to disable and reconfigure"
+    else
+      "Fields on this page are now uneditable, you can configure"
+    end
+  end
 end
--- a/app/models/service.rb
+++ b/app/models/service.rb
@@ -263,6 +263,14 @@ class Service < ActiveRecord::Base
    service
  end

+  def deprecated?
+    false
+  end
+
+  def deprecation_message
+    nil
+  end
+
  private

  def cache_project_has_external_issue_tracker

--- a/app/serializers/event_entity.rb
+++ b/app/serializers/event_entity.rb
-class EventEntity < Grape::Entity
-  expose :author, using: UserEntity
-  expose :updated_at
-end
--- a/app/serializers/merge_request_metrics_entity.rb
+++ b/app/serializers/merge_request_metrics_entity.rb
+class MergeRequestMetricsEntity < Grape::Entity
+  expose :latest_closed_at, as: :closed_at
+  expose :merged_at
+  expose :latest_closed_by, as: :closed_by, using: UserEntity
+  expose :merged_by, using: UserEntity
+end
--- a/app/serializers/merge_request_widget_entity.rb
+++ b/app/serializers/merge_request_widget_entity.rb
@@ -17,9 +17,11 @@ class MergeRequestWidgetEntity < IssuableEntity
    merge_request.project.merge_requests_ff_only_enabled
  end

-  # Events
-  expose :merge_event, using: EventEntity
-  expose :closed_event, using: EventEntity
+  expose :metrics do |merge_request|
+    metrics = build_metrics(merge_request)
+
+    MergeRequestMetricsEntity.new(metrics).as_json
+  end

  # User entities
  expose :merge_user, using: UserEntity
@@ -178,4 +180,27 @@ class MergeRequestWidgetEntity < IssuableEntity
    @presenters ||= {}
    @presenters[merge_request] ||= MergeRequestPresenter.new(merge_request, current_user: current_user)
  end
+
+  # Once SchedulePopulateMergeRequestMetricsWithEventsData fully runs,
+  # we can remove this method and just serialize MergeRequest#metrics
+  # instead. See https://gitlab.com/gitlab-org/gitlab-ce/issues/41587
+  def build_metrics(merge_request)
+    # There's no need to query and serialize metrics data for merge requests that are not
+    # merged or closed.
+    return unless merge_request.merged? || merge_request.closed?
+    return merge_request.metrics if merge_request.merged? && merge_request.metrics&.merged_by_id
+    return merge_request.metrics if merge_request.closed? && merge_request.metrics&.latest_closed_by_id
+
+    build_metrics_from_events(merge_request)
+  end
+
+  def build_metrics_from_events(merge_request)
+    closed_event = merge_request.closed_event
+    merge_event = merge_request.merge_event
+
+    MergeRequest::Metrics.new(latest_closed_at: closed_event&.updated_at,
+                              latest_closed_by: closed_event&.author,
+                              merged_at: merge_event&.updated_at,
+                              merged_by: merge_event&.author)
+  end
 end
--- a/app/services/event_create_service.rb
+++ b/app/services/event_create_service.rb
@@ -103,6 +103,6 @@ class EventCreateService
      author_id: current_user.id
    )

-    Event.create(attributes)
+    Event.create!(attributes)
  end
 end
--- a/app/services/merge_request_metrics_service.rb
+++ b/app/services/merge_request_metrics_service.rb
+class MergeRequestMetricsService
+  delegate :update!, to: :@merge_request_metrics
+
+  def initialize(merge_request_metrics)
+    @merge_request_metrics = merge_request_metrics
+  end
+
+  def merge(event)
+    update!(merged_by_id: event.author_id, merged_at: event.created_at)
+  end
+
+  def close(event)
+    update!(latest_closed_by_id: event.author_id, latest_closed_at: event.created_at)
+  end
+
+  def reopen
+    update!(latest_closed_by_id: nil, latest_closed_at: nil)
+  end
+end
--- a/app/services/merge_requests/base_service.rb
+++ b/app/services/merge_requests/base_service.rb
@@ -24,6 +24,10 @@ module MergeRequests

    private

+    def merge_request_metrics_service(merge_request)
+      MergeRequestMetricsService.new(merge_request.metrics)
+    end
+
    def create_assignee_note(merge_request)
      SystemNoteService.change_assignee(
        merge_request, merge_request.project, current_user, merge_request.assignee)

--- a/app/services/merge_requests/close_service.rb
+++ b/app/services/merge_requests/close_service.rb
@@ -8,7 +8,7 @@ module MergeRequests
      merge_request.allow_broken = true

      if merge_request.close
-        event_service.close_mr(merge_request, current_user)
+        create_event(merge_request)
        create_note(merge_request)
        notification_service.close_mr(merge_request, current_user)
        todo_service.close_merge_request(merge_request, current_user)
@@ -19,5 +19,16 @@ module MergeRequests

      merge_request
    end
+
+    private
+
+    def create_event(merge_request)
+      # Making sure MergeRequest::Metrics updates are in sync with
+      # Event creation.
+      Event.transaction do
+        close_event = event_service.close_mr(merge_request, current_user)
+        merge_request_metrics_service(merge_request).close(close_event)
+      end
+    end
  end
 end
--- a/app/services/merge_requests/post_merge_service.rb
+++ b/app/services/merge_requests/post_merge_service.rb
@@ -9,7 +9,7 @@ module MergeRequests
      close_issues(merge_request)
      todo_service.merge_merge_request(merge_request, current_user)
      merge_request.mark_as_merged
-      create_merge_event(merge_request, current_user)
+      create_event(merge_request)
      create_note(merge_request)
      notification_service.merge_mr(merge_request, current_user)
      execute_hooks(merge_request, 'merge')
@@ -34,5 +34,14 @@ module MergeRequests
    def create_merge_event(merge_request, current_user)
      EventCreateService.new.merge_mr(merge_request, current_user)
    end
+
+    def create_event(merge_request)
+      # Making sure MergeRequest::Metrics updates are in sync with
+      # Event creation.
+      Event.transaction do
+        merge_event = create_merge_event(merge_request, current_user)
+        merge_request_metrics_service(merge_request).merge(merge_event)
+      end
+    end
  end
 end
--- a/app/services/merge_requests/reopen_service.rb
+++ b/app/services/merge_requests/reopen_service.rb
@@ -4,7 +4,7 @@ module MergeRequests
      return merge_request unless can?(current_user, :update_merge_request, merge_request)

      if merge_request.reopen
-        event_service.reopen_mr(merge_request, current_user)
+        create_event(merge_request)
        create_note(merge_request, 'reopened')
        notification_service.reopen_mr(merge_request, current_user)
        execute_hooks(merge_request, 'reopen')
@@ -16,5 +16,16 @@ module MergeRequests

      merge_request
    end
+
+    private
+
+    def create_event(merge_request)
+      # Making sure MergeRequest::Metrics updates are in sync with
+      # Event creation.
+      Event.transaction do
+        event_service.reopen_mr(merge_request, current_user)
+        merge_request_metrics_service(merge_request).reopen
+      end
+    end
  end
 end
--- a/app/views/projects/services/_deprecated_message.html.haml
+++ b/app/views/projects/services/_deprecated_message.html.haml
+.flash-container.flash-container-page
+  .flash-alert.deprecated-service
+    %span= @service.deprecation_message
--- a/app/views/projects/services/_form.html.haml
+++ b/app/views/projects/services/_form.html.haml
@@ -13,10 +13,7 @@
      = render 'shared/service_settings', form: form, subject: @service
      - if @service.editable?
        .footer-block.row-content-block
-          %button.btn.btn-save{ type: 'submit' }
-            = icon('spinner spin', class: 'hidden js-btn-spinner')
-            %span.js-btn-label
-              Save changes
+          = service_save_button(@service)
          &nbsp;
          - if @service.valid? && @service.activated?
            - unless @service.can_test?

--- a/app/views/projects/services/edit.html.haml
+++ b/app/views/projects/services/edit.html.haml
@@ -2,4 +2,6 @@
 - page_title @service.title, "Services"
 - add_to_breadcrumbs("Settings", edit_project_path(@project))

+= render 'deprecated_message' if @service.deprecation_message
+
 = render 'form'
--- a/app/views/shared/_field.html.haml
+++ b/app/views/shared/_field.html.haml
@@ -7,6 +7,7 @@
 - choices = field[:choices]
 - default_choice = field[:default_choice]
 - help = field[:help]
+- disabled = disable_fields_service?(@service)

 .form-group
  - if type == "password" && value.present?
@@ -15,14 +16,14 @@
    = form.label name, title, class: "control-label"
  .col-sm-10
    - if type == 'text'
-      = form.text_field name, class: "form-control", placeholder: placeholder, required: required
+      = form.text_field name, class: "form-control", placeholder: placeholder, required: required, disabled: disabled
    - elsif type == 'textarea'
-      = form.text_area name, rows: 5, class: "form-control", placeholder: placeholder, required: required
+      = form.text_area name, rows: 5, class: "form-control", placeholder: placeholder, required: required, disabled: disabled
    - elsif type == 'checkbox'
-      = form.check_box name
+      = form.check_box name, disabled: disabled
    - elsif type == 'select'
-      = form.select name, options_for_select(choices, value ? value : default_choice), {}, { class: "form-control" }
+      = form.select name, options_for_select(choices, value ? value : default_choice), {}, { class: "form-control", disabled: disabled}
    - elsif type == 'password'
-      = form.password_field name, autocomplete: "new-password", class: "form-control", required: value.blank? && :required
+      = form.password_field name, autocomplete: "new-password", class: "form-control", required: value.blank? && required, disabled: disabled
    - if help
      %span.help-block= help
--- a/app/views/shared/_service_settings.html.haml
+++ b/app/views/shared/_service_settings.html.haml
@@ -11,7 +11,7 @@
    .form-group
      = form.label :active, "Active", class: "control-label"
      .col-sm-10
-        = form.check_box :active
+        = form.check_box :active, disabled: disable_fields_service?(@service)

  - if @service.supported_events.present?
    .form-group

--- a/changelogs/unreleased/40453-fix-api-endpoints-to-edit-wiki-pages-where-project-belongs-to-a-group.yml
+++ b/changelogs/unreleased/40453-fix-api-endpoints-to-edit-wiki-pages-where-project-belongs-to-a-group.yml
+---
+title: Fix API endpoints to edit wiki pages where project belongs to a group
+merge_request: 16170
+author:
+type: fixed
--- a/changelogs/unreleased/40533-groups-tree-updates.yml
+++ b/changelogs/unreleased/40533-groups-tree-updates.yml
+---
+title: Update groups tree to use GitLab SVG icons, add last updated at information
+  for projects
+merge_request: 15980
+author:
+type: changed
--- a/changelogs/unreleased/41054-disable-creation-of-new-kubernetes-integrations.yml
+++ b/changelogs/unreleased/41054-disable-creation-of-new-kubernetes-integrations.yml
+---
+title: Disable creation of new Kubernetes Integrations unless they're active or created
+  from template
+merge_request: 41054
+author:
+type: added
--- a/changelogs/unreleased/change-issues-closed-at-background-migration.yml
+++ b/changelogs/unreleased/change-issues-closed-at-background-migration.yml
+---
+title: Use a background migration for issues.closed_at
+merge_request:
+author:
+type: other
--- a/changelogs/unreleased/osw-introduce-merge-request-statistics.yml
+++ b/changelogs/unreleased/osw-introduce-merge-request-statistics.yml
+---
+title: Cache merged and closed events data in merge_request_metrics table
+merge_request:
+author:
+type: performance
--- a/changelogs/unreleased/sh-validate-path-project-import.yml
+++ b/changelogs/unreleased/sh-validate-path-project-import.yml
+---
+title: Avoid leaving a push event empty if payload cannot be created
+merge_request:
+author:
+type: fixed
--- a/db/migrate/20171127151038_add_events_related_columns_to_merge_request_metrics.rb
+++ b/db/migrate/20171127151038_add_events_related_columns_to_merge_request_metrics.rb
+class AddEventsRelatedColumnsToMergeRequestMetrics < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    change_table :merge_request_metrics do |t|
+      t.references :merged_by, references: :users
+      t.references :latest_closed_by, references: :users
+    end
+
+    add_column :merge_request_metrics, :latest_closed_at, :datetime_with_timezone
+
+    add_concurrent_foreign_key :merge_request_metrics, :users,
+                               column: :merged_by_id,
+                               on_delete: :nullify
+
+    add_concurrent_foreign_key :merge_request_metrics, :users,
+                               column: :latest_closed_by_id,
+                               on_delete: :nullify
+  end
+
+  def down
+    if foreign_keys_for(:merge_request_metrics, :merged_by_id).any?
+      remove_foreign_key :merge_request_metrics, column: :merged_by_id
+    end
+
+    if foreign_keys_for(:merge_request_metrics, :latest_closed_by_id).any?
+      remove_foreign_key :merge_request_metrics, column: :latest_closed_by_id
+    end
+
+    remove_columns :merge_request_metrics,
+      :merged_by_id, :latest_closed_by_id, :latest_closed_at
+  end
+end
--- a/db/post_migrate/20171128214150_schedule_populate_merge_request_metrics_with_events_data.rb
+++ b/db/post_migrate/20171128214150_schedule_populate_merge_request_metrics_with_events_data.rb
+# frozen_string_literal: true
+# rubocop:disable GitlabSecurity/SqlInjection
+
+class SchedulePopulateMergeRequestMetricsWithEventsData < ActiveRecord::Migration
+  DOWNTIME = false
+  BATCH_SIZE = 10_000
+  MIGRATION = 'PopulateMergeRequestMetricsWithEventsData'
+
+  disable_ddl_transaction!
+
+  class MergeRequest < ActiveRecord::Base
+    self.table_name = 'merge_requests'
+
+    include ::EachBatch
+  end
+
+  def up
+    merge_requests = MergeRequest.where("id IN (#{updatable_merge_requests_union_sql})").reorder(:id)
+
+    say 'Scheduling `PopulateMergeRequestMetricsWithEventsData` jobs'
+    # It will update around 4_000_000 records in batches of 10_000 merge
+    # requests (running between 10 minutes) and should take around 66 hours to complete.
+    # Apparently, production PostgreSQL is able to vacuum 10k-20k dead_tuples by
+    # minute, and at maximum, each of these jobs should UPDATE 20k records.
+    #
+    # More information about the updates in `PopulateMergeRequestMetricsWithEventsData` class.
+    #
+    merge_requests.each_batch(of: BATCH_SIZE) do |relation, index|
+      range = relation.pluck('MIN(id)', 'MAX(id)').first
+
+      BackgroundMigrationWorker.perform_in(index * 10.minutes, MIGRATION, range)
+    end
+  end
+
+  def down
+    execute "update merge_request_metrics set latest_closed_at = null"
+    execute "update merge_request_metrics set latest_closed_by_id = null"
+    execute "update merge_request_metrics set merged_by_id = null"
+  end
+
+  private
+
+  # On staging:
+  # Planning time: 0.682 ms
+  # Execution time: 22033.158 ms
+  #
+  def updatable_merge_requests_union_sql
+    metrics_not_exists_clause =
+      'NOT EXISTS (SELECT 1 FROM merge_request_metrics WHERE merge_request_metrics.merge_request_id = merge_requests.id)'
+
+    without_metrics_data = <<-SQL.strip_heredoc
+      merge_request_metrics.merged_by_id IS NULL OR
+      merge_request_metrics.latest_closed_by_id IS NULL OR
+      merge_request_metrics.latest_closed_at IS NULL
+    SQL
+
+    mrs_without_metrics_record = MergeRequest
+      .where(metrics_not_exists_clause)
+      .select(:id)
+
+    mrs_without_events_data = MergeRequest
+      .joins('INNER JOIN merge_request_metrics ON merge_requests.id = merge_request_metrics.merge_request_id')
+      .where(without_metrics_data)
+      .select(:id)
+
+    Gitlab::SQL::Union.new([mrs_without_metrics_record, mrs_without_events_data]).to_sql
+  end
+end
--- a/db/post_migrate/20171221140220_schedule_issues_closed_at_type_change.rb
+++ b/db/post_migrate/20171221140220_schedule_issues_closed_at_type_change.rb
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class ScheduleIssuesClosedAtTypeChange < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  class Issue < ActiveRecord::Base
+    self.table_name = 'issues'
+    include EachBatch
+
+    def self.to_migrate
+      where('closed_at IS NOT NULL')
+    end
+  end
+
+  def up
+    return unless migrate_column_type?
+
+    change_column_type_using_background_migration(
+      Issue.to_migrate,
+      :closed_at,
+      :datetime_with_timezone
+    )
+  end
+
+  def down
+    return if migrate_column_type?
+
+    change_column_type_using_background_migration(
+      Issue.to_migrate,
+      :closed_at,
+      :datetime
+    )
+  end
+
+  def migrate_column_type?
+    # Some environments may have already executed the previous version of this
+    # migration, thus we don't need to migrate those environments again.
+    column_for('issues', 'closed_at').type == :datetime
+  end
+end
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.

-ActiveRecord::Schema.define(version: 20171220191323) do
+ActiveRecord::Schema.define(version: 20171221140220) do

  # These are extensions that must be enabled in order to support this database
  enable_extension "plpgsql"
@@ -1056,6 +1056,9 @@ ActiveRecord::Schema.define(version: 20171220191323) do
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.integer "pipeline_id"
+    t.integer "merged_by_id"
+    t.integer "latest_closed_by_id"
+    t.datetime_with_timezone "latest_closed_at"
  end

  add_index "merge_request_metrics", ["first_deployed_to_production_at"], name: "index_merge_request_metrics_on_first_deployed_to_production_at", using: :btree
@@ -1995,6 +1998,8 @@ ActiveRecord::Schema.define(version: 20171220191323) do
  add_foreign_key "merge_request_diffs", "merge_requests", name: "fk_8483f3258f", on_delete: :cascade
  add_foreign_key "merge_request_metrics", "ci_pipelines", column: "pipeline_id", on_delete: :cascade
  add_foreign_key "merge_request_metrics", "merge_requests", on_delete: :cascade
+  add_foreign_key "merge_request_metrics", "users", column: "latest_closed_by_id", name: "fk_ae440388cc", on_delete: :nullify
+  add_foreign_key "merge_request_metrics", "users", column: "merged_by_id", name: "fk_7f28d925f3", on_delete: :nullify
  add_foreign_key "merge_requests", "ci_pipelines", column: "head_pipeline_id", name: "fk_fd82eae0b9", on_delete: :nullify
  add_foreign_key "merge_requests", "merge_request_diffs", column: "latest_merge_request_diff_id", name: "fk_06067f5644", on_delete: :nullify
  add_foreign_key "merge_requests", "milestones", name: "fk_6a5165a692", on_delete: :nullify

--- a/doc/development/what_requires_downtime.md
+++ b/doc/development/what_requires_downtime.md
@@ -195,6 +195,63 @@ end

 And that's it, we're done!

+## Changing Column Types For Large Tables
+
+While `change_column_type_concurrently` can be used for changing the type of a
+column without downtime it doesn't work very well for large tables. Because all
+of the work happens in sequence the migration can take a very long time to
+complete, preventing a deployment from proceeding.
+`change_column_type_concurrently` can also produce a lot of pressure on the
+database due to it rapidly updating many rows in sequence.
+
+To reduce database pressure you should instead use
+`change_column_type_using_background_migration` when migrating a column in a
+large table (e.g. `issues`). This method works similar to
+`change_column_type_concurrently` but uses background migration to spread the
+work / load over a longer time period, without slowing down deployments.
+
+Usage of this method is fairly simple:
+
+```ruby
+class ExampleMigration < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  disable_ddl_transaction!
+
+  class Issue < ActiveRecord::Base
+    self.table_name = 'issues'
+
+    include EachBatch
+
+    def self.to_migrate
+      where('closed_at IS NOT NULL')
+    end
+  end
+
+  def up
+    change_column_type_using_background_migration(
+      Issue.to_migrate,
+      :closed_at,
+      :datetime_with_timezone
+    )
+  end
+
+  def down
+    change_column_type_using_background_migration(
+      Issue.to_migrate,
+      :closed_at,
+      :datetime
+    )
+  end
+end
+```
+
+This would change the type of `issues.closed_at` to `timestamp with time zone`.
+
+Keep in mind that the relation passed to
+`change_column_type_using_background_migration` _must_ include `EachBatch`,
+otherwise it will raise a `TypeError`.
+
 ## Adding Indexes

 Adding indexes is an expensive process that blocks INSERT and UPDATE queries for

--- a/lib/api/helpers.rb
+++ b/lib/api/helpers.rb
@@ -69,7 +69,7 @@ module API
    end

    def wiki_page
-      page = user_project.wiki.find_page(params[:slug])
+      page = ProjectWiki.new(user_project, current_user).find_page(params[:slug])

      page || not_found!('Wiki Page')
    end

--- a/lib/gitlab/background_migration/cleanup_concurrent_type_change.rb
+++ b/lib/gitlab/background_migration/cleanup_concurrent_type_change.rb
+# frozen_string_literal: true
+
+module Gitlab
+  module BackgroundMigration
+    # Background migration for cleaning up a concurrent column rename.
+    class CleanupConcurrentTypeChange
+      include Database::MigrationHelpers
+
+      RESCHEDULE_DELAY = 10.minutes
+
+      # table - The name of the table the migration is performed for.
+      # old_column - The name of the old (to drop) column.
+      # new_column - The name of the new column.
+      def perform(table, old_column, new_column)
+        return unless column_exists?(:issues, new_column)
+
+        rows_to_migrate = define_model_for(table)
+          .where(new_column => nil)
+          .where
+          .not(old_column => nil)
+
+        if rows_to_migrate.any?
+          BackgroundMigrationWorker.perform_in(
+            RESCHEDULE_DELAY,
+            'CleanupConcurrentTypeChange',
+            [table, old_column, new_column]
+          )
+        else
+          cleanup_concurrent_column_type_change(table, old_column)
+        end
+      end
+
+      # These methods are necessary so we can re-use the migration helpers in
+      # this class.
+      def connection
+        ActiveRecord::Base.connection
+      end
+
+      def method_missing(name, *args, &block)
+        connection.__send__(name, *args, &block) # rubocop: disable GitlabSecurity/PublicSend
+      end
+
+      def respond_to_missing?(*args)
+        connection.respond_to?(*args) || super
+      end
+
+      def define_model_for(table)
+        Class.new(ActiveRecord::Base) do
+          self.table_name = table
+        end
+      end
+    end
+  end
+end
--- a/lib/gitlab/background_migration/copy_column.rb
+++ b/lib/gitlab/background_migration/copy_column.rb
+# frozen_string_literal: true
+
+module Gitlab
+  module BackgroundMigration
+    # CopyColumn is a simple (reusable) background migration that can be used to
+    # update the value of a column based on the value of another column in the
+    # same table.
+    #
+    # For this background migration to work the table that is migrated _has_ to
+    # have an `id` column as the primary key.
+    class CopyColumn
+      # table - The name of the table that contains the columns.
+      # copy_from - The column containing the data to copy.
+      # copy_to - The column to copy the data to.
+      # start_id - The start ID of the range of rows to update.
+      # end_id - The end ID of the range of rows to update.
+      def perform(table, copy_from, copy_to, start_id, end_id)
+        return unless connection.column_exists?(table, copy_to)
+
+        quoted_table = connection.quote_table_name(table)
+        quoted_copy_from = connection.quote_column_name(copy_from)
+        quoted_copy_to = connection.quote_column_name(copy_to)
+
+        # We're using raw SQL here since this job may be frequently executed. As
+        # a result dynamically defining models would lead to many unnecessary
+        # schema information queries.
+        connection.execute <<-SQL.strip_heredoc
+        UPDATE #{quoted_table}
+        SET #{quoted_copy_to} = #{quoted_copy_from}
+        WHERE id BETWEEN #{start_id} AND #{end_id}
+        SQL
+      end
+
+      def connection
+        ActiveRecord::Base.connection
+      end
+    end
+  end
+end
--- a/lib/gitlab/background_migration/migrate_events_to_push_event_payloads.rb
+++ b/lib/gitlab/background_migration/migrate_events_to_push_event_payloads.rb
@@ -128,18 +128,21 @@ module Gitlab
      end

      def process_event(event)
+        ActiveRecord::Base.transaction do
          replicate_event(event)
          create_push_event_payload(event) if event.push_event?
        end
+      rescue ActiveRecord::InvalidForeignKey => e
+        # A foreign key error means the associated event was removed. In this
+        # case we'll just skip migrating the event.
+        Rails.logger.error("Unable to migrate event #{event.id}: #{e}")
+      end

      def replicate_event(event)
        new_attributes = event.attributes
          .with_indifferent_access.except(:title, :data)

        EventForMigration.create!(new_attributes)
-      rescue ActiveRecord::InvalidForeignKey
-        # A foreign key error means the associated event was removed. In this
-        # case we'll just skip migrating the event.
      end

      def create_push_event_payload(event)
@@ -156,9 +159,6 @@ module Gitlab
          ref: event.trimmed_ref_name,
          commit_title: event.commit_title
        )
-      rescue ActiveRecord::InvalidForeignKey
-        # A foreign key error means the associated event was removed. In this
-        # case we'll just skip migrating the event.
      end

      def find_events(start_id, end_id)

--- a/lib/gitlab/background_migration/populate_merge_request_metrics_with_events_data.rb
+++ b/lib/gitlab/background_migration/populate_merge_request_metrics_with_events_data.rb
+# frozen_string_literal: true
+# rubocop:disable Metrics/LineLength
+# rubocop:disable Metrics/MethodLength
+# rubocop:disable Metrics/ClassLength
+# rubocop:disable Style/Documentation
+
+module Gitlab
+  module BackgroundMigration
+    class PopulateMergeRequestMetricsWithEventsData
+      def perform(min_merge_request_id, max_merge_request_id)
+        insert_metrics_for_range(min_merge_request_id, max_merge_request_id)
+        update_metrics_with_events_data(min_merge_request_id, max_merge_request_id)
+      end
+
+      # Inserts merge_request_metrics records for merge_requests without it for
+      # a given merge request batch.
+      def insert_metrics_for_range(min, max)
+        metrics_not_exists_clause =
+          <<-SQL.strip_heredoc
+            NOT EXISTS (SELECT 1 FROM merge_request_metrics
+                        WHERE merge_request_metrics.merge_request_id = merge_requests.id)
+          SQL
+
+        MergeRequest.where(metrics_not_exists_clause).where(id: min..max).each_batch do |batch|
+          select_sql = batch.select(:id, :created_at, :updated_at).to_sql
+
+          execute("INSERT INTO merge_request_metrics (merge_request_id, created_at, updated_at) #{select_sql}")
+        end
+      end
+
+      def update_metrics_with_events_data(min, max)
+        if Gitlab::Database.postgresql?
+          # Uses WITH syntax in order to update merged and closed events with a single UPDATE.
+          # WITH is not supported by MySQL.
+          update_events_for_range(min, max)
+        else
+          update_merged_events_for_range(min, max)
+          update_closed_events_for_range(min, max)
+        end
+      end
+
+      private
+
+      # Updates merge_request_metrics latest_closed_at, latest_closed_by_id and merged_by_id
+      # based on the latest event records on events table for a given merge request batch.
+      def update_events_for_range(min, max)
+        sql = <<-SQL.strip_heredoc
+          WITH events_for_update AS (
+            SELECT DISTINCT ON (target_id, action) target_id, action, author_id, updated_at
+             FROM events
+            WHERE target_id BETWEEN #{min} AND #{max}
+              AND target_type = 'MergeRequest'
+              AND action IN (#{Event::CLOSED},#{Event::MERGED})
+            ORDER BY target_id, action, id DESC
+          )
+          UPDATE merge_request_metrics met
+            SET latest_closed_at = latest_closed.updated_at,
+                latest_closed_by_id = latest_closed.author_id,
+                merged_by_id = latest_merged.author_id
+           FROM (SELECT * FROM events_for_update WHERE action = #{Event::CLOSED}) AS latest_closed
+           FULL OUTER JOIN
+                (SELECT * FROM events_for_update WHERE action = #{Event::MERGED}) AS latest_merged
+          USING (target_id)
+          WHERE target_id = merge_request_id;
+        SQL
+
+        execute(sql)
+      end
+
+      # Updates merge_request_metrics latest_closed_at, latest_closed_by_id based on the latest closed
+      # records on events table for a given merge request batch.
+      def update_closed_events_for_range(min, max)
+        sql =
+          <<-SQL.strip_heredoc
+            UPDATE merge_request_metrics metrics,
+              (#{select_events(min, max, Event::CLOSED)}) closed_events
+            SET metrics.latest_closed_by_id = closed_events.author_id,
+                metrics.latest_closed_at = closed_events.updated_at #{where_matches_closed_events};
+          SQL
+
+        execute(sql)
+      end
+
+      # Updates merge_request_metrics merged_by_id based on the latest merged
+      # records on events table for a given merge request batch.
+      def update_merged_events_for_range(min, max)
+        sql =
+          <<-SQL.strip_heredoc
+            UPDATE merge_request_metrics metrics,
+              (#{select_events(min, max, Event::MERGED)}) merged_events
+            SET metrics.merged_by_id = merged_events.author_id #{where_matches_merged_events};
+          SQL
+
+        execute(sql)
+      end
+
+      def execute(sql)
+        @connection ||= ActiveRecord::Base.connection
+        @connection.execute(sql)
+      end
+
+      def select_events(min, max, action)
+        select_max_event_id = <<-SQL.strip_heredoc
+          SELECT max(id)
+          FROM events
+          WHERE action = #{action}
+          AND target_type = 'MergeRequest'
+          AND target_id BETWEEN #{min} AND #{max}
+          GROUP BY target_id
+        SQL
+
+        <<-SQL.strip_heredoc
+          SELECT author_id, updated_at, target_id
+          FROM events
+          WHERE id IN(#{select_max_event_id})
+        SQL
+      end
+
+      def where_matches_closed_events
+        <<-SQL.strip_heredoc
+          WHERE metrics.merge_request_id = closed_events.target_id
+          AND metrics.latest_closed_at IS NULL
+          AND metrics.latest_closed_by_id IS NULL
+        SQL
+      end
+
+      def where_matches_merged_events
+        <<-SQL.strip_heredoc
+          WHERE metrics.merge_request_id = merged_events.target_id
+          AND metrics.merged_by_id IS NULL
+        SQL
+      end
+    end
+  end
+end
--- a/lib/gitlab/database/migration_helpers.rb
+++ b/lib/gitlab/database/migration_helpers.rb
@@ -385,10 +385,27 @@ module Gitlab
        # necessary since we copy over old values further down.
        change_column_default(table, new, old_col.default) if old_col.default

-        trigger_name = rename_trigger_name(table, old, new)
+        install_rename_triggers(table, old, new)
+
+        update_column_in_batches(table, new, Arel::Table.new(table)[old])
+
+        change_column_null(table, new, false) unless old_col.null
+
+        copy_indexes(table, old, new)
+        copy_foreign_keys(table, old, new)
+      end
+
+      # Installs triggers in a table that keep a new column in sync with an old
+      # one.
+      #
+      # table - The name of the table to install the trigger in.
+      # old_column - The name of the old column.
+      # new_column - The name of the new column.
+      def install_rename_triggers(table, old_column, new_column)
+        trigger_name = rename_trigger_name(table, old_column, new_column)
        quoted_table = quote_table_name(table)
-        quoted_old = quote_column_name(old)
-        quoted_new = quote_column_name(new)
+        quoted_old = quote_column_name(old_column)
+        quoted_new = quote_column_name(new_column)

        if Database.postgresql?
          install_rename_triggers_for_postgresql(trigger_name, quoted_table,
@@ -397,13 +414,6 @@ module Gitlab
          install_rename_triggers_for_mysql(trigger_name, quoted_table,
                                            quoted_old, quoted_new)
        end
-
-        update_column_in_batches(table, new, Arel::Table.new(table)[old])
-
-        change_column_null(table, new, false) unless old_col.null
-
-        copy_indexes(table, old, new)
-        copy_foreign_keys(table, old, new)
      end

      # Changes the type of a column concurrently.
@@ -455,6 +465,97 @@ module Gitlab
        remove_column(table, old)
      end

+      # Changes the column type of a table using a background migration.
+      #
+      # Because this method uses a background migration it's more suitable for
+      # large tables. For small tables it's better to use
+      # `change_column_type_concurrently` since it can complete its work in a
+      # much shorter amount of time and doesn't rely on Sidekiq.
+      #
+      # Example usage:
+      #
+      #     class Issue < ActiveRecord::Base
+      #       self.table_name = 'issues'
+      #
+      #       include EachBatch
+      #
+      #       def self.to_migrate
+      #         where('closed_at IS NOT NULL')
+      #       end
+      #     end
+      #
+      #     change_column_type_using_background_migration(
+      #       Issue.to_migrate,
+      #       :closed_at,
+      #       :datetime_with_timezone
+      #     )
+      #
+      # Reverting a migration like this is done exactly the same way, just with
+      # a different type to migrate to (e.g. `:datetime` in the above example).
+      #
+      # relation - An ActiveRecord relation to use for scheduling jobs and
+      #            figuring out what table we're modifying. This relation _must_
+      #            have the EachBatch module included.
+      #
+      # column - The name of the column for which the type will be changed.
+      #
+      # new_type - The new type of the column.
+      #
+      # batch_size - The number of rows to schedule in a single background
+      #              migration.
+      #
+      # interval - The time interval between every background migration.
+      def change_column_type_using_background_migration(
+        relation,
+        column,
+        new_type,
+        batch_size: 10_000,
+        interval: 10.minutes
+      )
+        unless relation.model < EachBatch
+          raise TypeError, 'The relation must include the EachBatch module'
+        end
+
+        temp_column = "#{column}_for_type_change"
+        table = relation.table_name
+        max_index = 0
+
+        add_column(table, temp_column, new_type)
+        install_rename_triggers(table, column, temp_column)
+
+        # Schedule the jobs that will copy the data from the old column to the
+        # new one.
+        relation.each_batch(of: batch_size) do |batch, index|
+          start_id, end_id = batch.pluck('MIN(id), MAX(id)').first
+          max_index = index
+
+          BackgroundMigrationWorker.perform_in(
+            index * interval,
+            'CopyColumn',
+            [table, column, temp_column, start_id, end_id]
+          )
+        end
+
+        # Schedule the renaming of the column to happen (initially) 1 hour after
+        # the last batch finished.
+        BackgroundMigrationWorker.perform_in(
+          (max_index * interval) + 1.hour,
+          'CleanupConcurrentTypeChange',
+          [table, column, temp_column]
+        )
+
+        if perform_background_migration_inline?
+          # To ensure the schema is up to date immediately we perform the
+          # migration inline in dev / test environments.
+          Gitlab::BackgroundMigration.steal('CopyColumn')
+          Gitlab::BackgroundMigration.steal('CleanupConcurrentTypeChange')
+        end
+      end
+
+      def perform_background_migration_inline?
+        Rails.env.test? || Rails.env.development?
+      end
+
      # Performs a concurrent column rename when using PostgreSQL.
      def install_rename_triggers_for_postgresql(trigger, table, old, new)
        execute <<-EOF.strip_heredoc

--- a/lib/gitlab/git/repository.rb
+++ b/lib/gitlab/git/repository.rb
@@ -1665,6 +1665,7 @@ module Gitlab
        cmd = %W[#{Gitlab.config.git.bin_path} --git-dir=#{path} rev-list]
        cmd << "--after=#{options[:after].iso8601}" if options[:after]
        cmd << "--before=#{options[:before].iso8601}" if options[:before]
+        cmd << "--max-count=#{options[:max_count]}" if options[:max_count]
        cmd += %W[--count #{options[:ref]}]
        cmd += %W[-- #{options[:path]}] if options[:path].present?


--- a/lib/gitlab/gitaly_client/commit_service.rb
+++ b/lib/gitlab/gitaly_client/commit_service.rb
@@ -130,6 +130,7 @@ module Gitlab
        request.after = Google::Protobuf::Timestamp.new(seconds: options[:after].to_i) if options[:after].present?
        request.before = Google::Protobuf::Timestamp.new(seconds: options[:before].to_i) if options[:before].present?
        request.path = options[:path] if options[:path].present?
+        request.max_count = options[:max_count] if options[:max_count].present?

        GitalyClient.call(@repository.storage, :commit_service, :count_commits, request, timeout: GitalyClient.medium_timeout).count
      end

--- a/lib/gitlab/gitaly_client/operation_service.rb
+++ b/lib/gitlab/gitaly_client/operation_service.rb
@@ -101,6 +101,7 @@ module Gitlab
        request_enum.push(Gitaly::UserMergeBranchRequest.new(apply: true))

        branch_update = response_enum.next.branch_update
+        return if branch_update.nil?
        raise Gitlab::Git::CommitError.new('failed to apply merge to branch') unless branch_update.commit_id.present?

        Gitlab::Git::OperationService::BranchUpdate.from_gitaly(branch_update)

--- a/qa/qa/runtime/user.rb
+++ b/qa/qa/runtime/user.rb
@@ -12,7 +12,7 @@ module QA
      end

      def ssh_key
-        <<~KEY.tr("\n", '')
+        <<~KEY.delete("\n")
          ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDFf6RYK3qu/RKF/3ndJmL5xgMLp3O9
          6x8lTay+QGZ0+9FnnAXMdUqBq/ZU6d/gyMB4IaW3nHzM1w049++yAB6UPCzMB8Uo27K5
          /jyZCtj7Vm9PFNjF/8am1kp46c/SeYicQgQaSBdzIW3UDEa1Ef68qroOlvpi9PYZ/tA7

--- a/spec/controllers/projects/services_controller_spec.rb
+++ b/spec/controllers/projects/services_controller_spec.rb
@@ -114,5 +114,41 @@ describe Projects::ServicesController do
        expect(flash[:notice]).to eq 'HipChat settings saved, but not activated.'
      end
    end
+
+    context 'with a deprecated service' do
+      let(:service) { create(:kubernetes_service, project: project) }
+
+      before do
+        put :update,
+          namespace_id: project.namespace, project_id: project, id: service.to_param, service: { namespace: 'updated_namespace' }
+      end
+
+      it 'should not update the service' do
+        service.reload
+        expect(service.namespace).not_to eq('updated_namespace')
+      end
+    end
+  end
+
+  describe "GET #edit" do
+    before do
+      get :edit, namespace_id: project.namespace, project_id: project, id: service_id
+    end
+
+    context 'with approved services' do
+      let(:service_id) { 'jira' }
+
+      it 'should render edit page' do
+        expect(response).to be_success
+      end
+    end
+
+    context 'with a deprecated service' do
+      let(:service_id) { 'kubernetes' }
+
+      it 'should render edit page' do
+        expect(response).to be_success
+      end
+    end
  end
 end
--- a/spec/factories/keys.rb
+++ b/spec/factories/keys.rb
@@ -21,12 +21,14 @@ FactoryBot.define do

    factory :rsa_key_2048 do
      key do
-        'ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDFf6RYK3qu/RKF/3ndJmL5xgMLp3O9' \
-        '6x8lTay+QGZ0+9FnnAXMdUqBq/ZU6d/gyMB4IaW3nHzM1w049++yAB6UPCzMB8Uo27K5' \
-        '/jyZCtj7Vm9PFNjF/8am1kp46c/SeYicQgQaSBdzIW3UDEa1Ef68qroOlvpi9PYZ/tA7' \
-        'M0YP0K5PXX+E36zaIRnJVMPT3f2k+GnrxtjafZrwFdpOP/Fol5BQLBgcsyiU+LM1SuaC' \
-        'rzd8c9vyaTA1CxrkxaZh+buAi0PmdDtaDrHd42gqZkXCKavyvgM5o2CkQ5LJHCgzpXy0' \
-        '5qNFzmThBSkb+XtoxbyagBiGbVZtSVow6Xa7qewz= dummy@gitlab.com'
+        <<~KEY.delete("\n")
+          ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDFf6RYK3qu/RKF/3ndJmL5xgMLp3O9
+          6x8lTay+QGZ0+9FnnAXMdUqBq/ZU6d/gyMB4IaW3nHzM1w049++yAB6UPCzMB8Uo27K5
+          /jyZCtj7Vm9PFNjF/8am1kp46c/SeYicQgQaSBdzIW3UDEa1Ef68qroOlvpi9PYZ/tA7
+          M0YP0K5PXX+E36zaIRnJVMPT3f2k+GnrxtjafZrwFdpOP/Fol5BQLBgcsyiU+LM1SuaC
+          rzd8c9vyaTA1CxrkxaZh+buAi0PmdDtaDrHd42gqZkXCKavyvgM5o2CkQ5LJHCgzpXy0
+          5qNFzmThBSkb+XtoxbyagBiGbVZtSVow6Xa7qewz= dummy@gitlab.com
+        KEY
      end

      factory :rsa_deploy_key_2048, class: 'DeployKey'
@@ -34,37 +36,44 @@ FactoryBot.define do

    factory :dsa_key_2048 do
      key do
-        'ssh-dss AAAAB3NzaC1kc3MAAAEBAO/3/NPLA/zSFkMOCaTtGo+uos1flfQ5f038Uk+G' \
-        'Y9AeLGzX+Srhw59GdVXmOQLYBrOt5HdGwqYcmLnE2VurUGmhtfeO5H+3p5pGJbkS0Gxp' \
-        'YH1HRO9lWsncF3Hh1w4lYsDjkclDiSTdfTuN8F4Kb3DXNnVSCieeonp+B25F/CXagyTQ' \
-        '/pvNmHFeYgGCVdnBtFdi+xfxaZ8NKdPrGggzokbKHElDZQ4Xo5EpdcyLajgM7nB2r2Rz' \
-        'OrmeaevKi5lV68ehRa9Yyrb7vxvwiwBwOgqR/mnN7Gnaq1jUdmJY+ct04Qwx37f5jvhv' \
-        '5gA4U40SGMoiHM8RFIN7Ksz0jsyX73MAAAAVALRWOfjfzHpK7KLz4iqDvvTUAevJAAAB' \
-        'AEa9NZ+6y9iQ5erGsdfLTXFrhSefTG0NhghoO/5IFkSGfd8V7kzTvCHaFrcfpEA5kP8t' \
-        'poeOG0TASB6tgGOxm1Bq4Wncry5RORBPJlAVpDGRcvZ931ddH7IgltEInS6za2uH6F/1' \
-        'M1QfKePSLr6xJ1ZLYfP0Og5KTp1x6yMQvfwV0a+XdA+EPgaJWLWp/pWwKWa0oLUgjsIH' \
-        'MYzuOGh5c708uZrmkzqvgtW2NgXhcIroRgynT3IfI2lP2rqqb3uuuE/qH5UCUFO+Dc3H' \
-        'nAFNeQDT/M25AERdPYBAY5a+iPjIgO+jT7BfmfByT+AZTqZySrCyc7nNZL3YgGLK0l6A' \
-        '1GgAAAEBAN9FpFOdIXE+YEZhKl1vPmbcn+b1y5zOl6N4x1B7Q8pD/pLMziWROIS8uLzb' \
-        'aZ0sMIWezHIkxuo1iROMeT+jtCubn7ragaN6AX7nMpxYUH9+mYZZs/fyElt6wCviVhTI' \
-        'zM+u7VdQsnZttOOlQfogHdL+SpeAft0DsfJjlcgQnsLlHQKv6aPqCPYUST2nE7RyW/Ex' \
-        'PrMxLtOWt0/j8RYHbwwqvyeZqBz3ESBgrS9c5tBdBfauwYUV/E7gPLOU3OZFw9ue7o+z' \
-        'wzoTZqW6Xouy5wtWvSLQSLT5XwOslmQz8QMBxD0AQyDfEFGsBCWzmbTgKv9uqrBjubsS' \
-        'Taja+Cf9kMo== dummy@gitlab.com'
+        <<~KEY.delete("\n")
+          ssh-dss AAAAB3NzaC1kc3MAAAEBAO/3/NPLA/zSFkMOCaTtGo+uos1flfQ5f038Uk+G
+          Y9AeLGzX+Srhw59GdVXmOQLYBrOt5HdGwqYcmLnE2VurUGmhtfeO5H+3p5pGJbkS0Gxp
+          YH1HRO9lWsncF3Hh1w4lYsDjkclDiSTdfTuN8F4Kb3DXNnVSCieeonp+B25F/CXagyTQ
+          /pvNmHFeYgGCVdnBtFdi+xfxaZ8NKdPrGggzokbKHElDZQ4Xo5EpdcyLajgM7nB2r2Rz
+          OrmeaevKi5lV68ehRa9Yyrb7vxvwiwBwOgqR/mnN7Gnaq1jUdmJY+ct04Qwx37f5jvhv
+          5gA4U40SGMoiHM8RFIN7Ksz0jsyX73MAAAAVALRWOfjfzHpK7KLz4iqDvvTUAevJAAAB
+          AEa9NZ+6y9iQ5erGsdfLTXFrhSefTG0NhghoO/5IFkSGfd8V7kzTvCHaFrcfpEA5kP8t
+          poeOG0TASB6tgGOxm1Bq4Wncry5RORBPJlAVpDGRcvZ931ddH7IgltEInS6za2uH6F/1
+          M1QfKePSLr6xJ1ZLYfP0Og5KTp1x6yMQvfwV0a+XdA+EPgaJWLWp/pWwKWa0oLUgjsIH
+          MYzuOGh5c708uZrmkzqvgtW2NgXhcIroRgynT3IfI2lP2rqqb3uuuE/qH5UCUFO+Dc3H
+          nAFNeQDT/M25AERdPYBAY5a+iPjIgO+jT7BfmfByT+AZTqZySrCyc7nNZL3YgGLK0l6A
+          1GgAAAEBAN9FpFOdIXE+YEZhKl1vPmbcn+b1y5zOl6N4x1B7Q8pD/pLMziWROIS8uLzb
+          aZ0sMIWezHIkxuo1iROMeT+jtCubn7ragaN6AX7nMpxYUH9+mYZZs/fyElt6wCviVhTI
+          zM+u7VdQsnZttOOlQfogHdL+SpeAft0DsfJjlcgQnsLlHQKv6aPqCPYUST2nE7RyW/Ex
+          PrMxLtOWt0/j8RYHbwwqvyeZqBz3ESBgrS9c5tBdBfauwYUV/E7gPLOU3OZFw9ue7o+z
+          wzoTZqW6Xouy5wtWvSLQSLT5XwOslmQz8QMBxD0AQyDfEFGsBCWzmbTgKv9uqrBjubsS
+          Taja+Cf9kMo== dummy@gitlab.com
+        KEY
      end
    end

    factory :ecdsa_key_256 do
      key do
-        'ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYA' \
-        'AABBBJZmkzTgY0fiCQ+DVReyH/fFwTFz0XoR3RUO0u+199H19KFw7mNPxRSMOVS7tEtO' \
-        'Nj3Q7FcZXfqthHvgAzDiHsc= dummy@gitlab.com'
+        <<~KEY.delete("\n")
+          ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYA
+          AABBBJZmkzTgY0fiCQ+DVReyH/fFwTFz0XoR3RUO0u+199H19KFw7mNPxRSMOVS7tEtO
+          Nj3Q7FcZXfqthHvgAzDiHsc= dummy@gitlab.com
+        KEY
      end
    end

    factory :ed25519_key_256 do
      key do
-        'ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIETnVTgzqC1gatgSlC4zH6aYt2CAQzgJOhDRvf59ohL6 dummy@gitlab.com'
+        <<~KEY.delete("\n")
+          ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIETnVTgzqC1gatgSlC4zH6aYt2CAQzgJ
+          OhDRvf59ohL6 dummy@gitlab.com
+        KEY
      end
    end
  end

--- a/spec/factories/services.rb
+++ b/spec/factories/services.rb
@@ -18,6 +18,7 @@ FactoryBot.define do

  factory :kubernetes_service do
    project
+    type 'KubernetesService'
    active true
    properties({
      api_url: 'https://kubernetes.example.com',

--- a/spec/features/dashboard/groups_list_spec.rb
+++ b/spec/features/dashboard/groups_list_spec.rb
@@ -94,22 +94,14 @@ feature 'Dashboard Groups page', :js do
    end

    it 'can toggle parent group' do
-      # Collapsed by default
-      expect(page).not_to have_selector("#group-#{group.id} .fa-caret-down", count: 1)
-      expect(page).to have_selector("#group-#{group.id} .fa-caret-right")
-
      # expand
      click_group_caret(group)

-      expect(page).to have_selector("#group-#{group.id} .fa-caret-down")
-      expect(page).not_to have_selector("#group-#{group.id} .fa-caret-right", count: 1)
      expect(page).to have_selector("#group-#{group.id} #group-#{subgroup.id}")

      # collapse
      click_group_caret(group)

-      expect(page).not_to have_selector("#group-#{group.id} .fa-caret-down", count: 1)
-      expect(page).to have_selector("#group-#{group.id} .fa-caret-right")
      expect(page).not_to have_selector("#group-#{group.id} #group-#{subgroup.id}")
    end
  end

--- a/spec/features/projects/clusters/interchangeability_spec.rb
+++ b/spec/features/projects/clusters/interchangeability_spec.rb
 require 'spec_helper'

 feature 'Interchangeability between KubernetesService and Platform::Kubernetes' do
-  EXCEPT_METHODS = %i[test title description help fields initialize_properties namespace namespace= api_url api_url=].freeze
+  EXCEPT_METHODS = %i[test title description help fields initialize_properties namespace namespace= api_url api_url= deprecated? deprecation_message].freeze
  EXCEPT_METHODS_GREP_V = %w[_touched? _changed? _was].freeze

  it 'Clusters::Platform::Kubernetes covers core interfaces in KubernetesService' do

--- a/spec/fixtures/api/schemas/entities/merge_request_metrics.json
+++ b/spec/fixtures/api/schemas/entities/merge_request_metrics.json
+{
+  "type": "object",
+  "required": ["closed_at", "merged_at", "closed_by", "merged_by"],
+  "properties" : {
+    "closed_at": { "type": ["datetime", "null"] },
+    "merged_at": { "type": ["datetime", "null"] },
+    "closed_by": {
+      "oneOf": [
+        { "type": "null" },
+        { "$ref": "user.json" }
+      ]
+    },
+    "merged_by": {
+      "oneOf": [
+        { "type": "null" },
+        { "$ref": "user.json" }
+      ]
+    }
+  },
+  "additionalProperties": false
+}
--- a/spec/fixtures/api/schemas/entities/merge_request_widget.json
+++ b/spec/fixtures/api/schemas/entities/merge_request_widget.json
@@ -31,8 +31,12 @@
    "source_project_id": { "type": "integer" },
    "target_branch": { "type": "string" },
    "target_project_id": { "type": "integer" },
-    "merge_event": { "type": ["object", "null"] },
-    "closed_event": { "type": ["object", "null"] },
+    "metrics": {
+      "oneOf": [
+        { "type": "null" },
+        { "$ref": "merge_request_metrics.json" }
+      ]
+    },
    "author": { "type": ["object", "null"] },
    "merge_user": { "type": ["object", "null"] },
    "diff_head_sha": { "type": ["string", "null"] },

--- a/spec/fixtures/api/schemas/entities/user.json
+++ b/spec/fixtures/api/schemas/entities/user.json
+{
+  "type": "object",
+  "required": [
+    "id",
+    "state",
+    "avatar_url",
+    "web_url",
+    "path"
+  ],
+  "properties": {
+    "id": { "type": "integer" },
+    "state": { "type": "string" },
+    "avatar_url": { "type": "string" },
+    "web_url": { "type": "string" },
+    "path": { "type": "string" }
+  }
+}
--- a/spec/javascripts/groups/components/item_caret_spec.js
+++ b/spec/javascripts/groups/components/item_caret_spec.js
@@ -16,24 +16,20 @@ describe('ItemCaretComponent', () => {
  describe('template', () => {
    it('should render component template correctly', () => {
      const vm = createComponent();
-      vm.$mount();
      expect(vm.$el.classList.contains('folder-caret')).toBeTruthy();
+      expect(vm.$el.querySelectorAll('svg').length).toBe(1);
      vm.$destroy();
    });

    it('should render caret down icon if `isGroupOpen` prop is `true`', () => {
      const vm = createComponent(true);
-      vm.$mount();
-      expect(vm.$el.querySelectorAll('i.fa.fa-caret-down').length).toBe(1);
-      expect(vm.$el.querySelectorAll('i.fa.fa-caret-right').length).toBe(0);
+      expect(vm.$el.querySelector('svg use').getAttribute('xlink:href')).toContain('angle-down');
      vm.$destroy();
    });

    it('should render caret right icon if `isGroupOpen` prop is `false`', () => {
      const vm = createComponent();
-      vm.$mount();
-      expect(vm.$el.querySelectorAll('i.fa.fa-caret-down').length).toBe(0);
-      expect(vm.$el.querySelectorAll('i.fa.fa-caret-right').length).toBe(1);
+      expect(vm.$el.querySelector('svg use').getAttribute('xlink:href')).toContain('angle-right');
      vm.$destroy();
    });
  });

--- a/spec/javascripts/groups/components/item_stats_spec.js
+++ b/spec/javascripts/groups/components/item_stats_spec.js
@@ -26,7 +26,6 @@ describe('ItemStatsComponent', () => {
        Object.keys(VISIBILITY_TYPE_ICON).forEach((visibility) => {
          const item = Object.assign({}, mockParentGroupItem, { visibility });
          const vm = createComponent(item);
-          vm.$mount();
          expect(vm.visibilityIcon).toBe(VISIBILITY_TYPE_ICON[visibility]);
          vm.$destroy();
        });
@@ -41,7 +40,6 @@ describe('ItemStatsComponent', () => {
            type: ITEM_TYPE.GROUP,
          });
          const vm = createComponent(item);
-          vm.$mount();
          expect(vm.visibilityTooltip).toBe(GROUP_VISIBILITY_TYPE[visibility]);
          vm.$destroy();
        });
@@ -54,7 +52,6 @@ describe('ItemStatsComponent', () => {
            type: ITEM_TYPE.PROJECT,
          });
          const vm = createComponent(item);
-          vm.$mount();
          expect(vm.visibilityTooltip).toBe(PROJECT_VISIBILITY_TYPE[visibility]);
          vm.$destroy();
        });
@@ -68,13 +65,11 @@ describe('ItemStatsComponent', () => {

        item = Object.assign({}, mockParentGroupItem, { type: ITEM_TYPE.PROJECT });
        vm = createComponent(item);
-        vm.$mount();
        expect(vm.isProject).toBeTruthy();
        vm.$destroy();

        item = Object.assign({}, mockParentGroupItem, { type: ITEM_TYPE.GROUP });
        vm = createComponent(item);
-        vm.$mount();
        expect(vm.isProject).toBeFalsy();
        vm.$destroy();
      });
@@ -87,13 +82,11 @@ describe('ItemStatsComponent', () => {

        item = Object.assign({}, mockParentGroupItem, { type: ITEM_TYPE.GROUP });
        vm = createComponent(item);
-        vm.$mount();
        expect(vm.isGroup).toBeTruthy();
        vm.$destroy();

        item = Object.assign({}, mockParentGroupItem, { type: ITEM_TYPE.PROJECT });
        vm = createComponent(item);
-        vm.$mount();
        expect(vm.isGroup).toBeFalsy();
        vm.$destroy();
      });
@@ -101,57 +94,37 @@ describe('ItemStatsComponent', () => {
  });

  describe('template', () => {
-    it('should render component template correctly', () => {
+    it('renders component container element correctly', () => {
      const vm = createComponent();
-      vm.$mount();

-      const visibilityIconEl = vm.$el.querySelector('.item-visibility');
-      expect(vm.$el.classList.contains('.stats')).toBeDefined();
-      expect(visibilityIconEl).toBeDefined();
-      expect(visibilityIconEl.dataset.originalTitle).toBe(vm.visibilityTooltip);
-      expect(visibilityIconEl.querySelector('i.fa')).toBeDefined();
+      expect(vm.$el.classList.contains('stats')).toBeTruthy();

      vm.$destroy();
    });

-    it('should render stat icons if `item.type` is Group', () => {
-      const item = Object.assign({}, mockParentGroupItem, { type: ITEM_TYPE.GROUP });
-      const vm = createComponent(item);
-      vm.$mount();
-
-      const subgroupIconEl = vm.$el.querySelector('span.number-subgroups');
-      expect(subgroupIconEl).toBeDefined();
-      expect(subgroupIconEl.dataset.originalTitle).toBe('Subgroups');
-      expect(subgroupIconEl.querySelector('i.fa.fa-folder')).toBeDefined();
-      expect(subgroupIconEl.innerText.trim()).toBe(`${vm.item.subgroupCount}`);
-
-      const projectsIconEl = vm.$el.querySelector('span.number-projects');
-      expect(projectsIconEl).toBeDefined();
-      expect(projectsIconEl.dataset.originalTitle).toBe('Projects');
-      expect(projectsIconEl.querySelector('i.fa.fa-bookmark')).toBeDefined();
-      expect(projectsIconEl.innerText.trim()).toBe(`${vm.item.projectCount}`);
-
-      const membersIconEl = vm.$el.querySelector('span.number-users');
-      expect(membersIconEl).toBeDefined();
-      expect(membersIconEl.dataset.originalTitle).toBe('Members');
-      expect(membersIconEl.querySelector('i.fa.fa-users')).toBeDefined();
-      expect(membersIconEl.innerText.trim()).toBe(`${vm.item.memberCount}`);
+    it('renders item visibility icon and tooltip correctly', () => {
+      const vm = createComponent();
+
+      const visibilityIconEl = vm.$el.querySelector('.item-visibility');
+      expect(visibilityIconEl).not.toBe(null);
+      expect(visibilityIconEl.dataset.originalTitle).toBe(vm.visibilityTooltip);
+      expect(visibilityIconEl.querySelectorAll('svg').length > 0).toBeTruthy();

      vm.$destroy();
    });

-    it('should render stat icons if `item.type` is Project', () => {
+    it('renders start count and last updated information for project item correctly', () => {
      const item = Object.assign({}, mockParentGroupItem, {
        type: ITEM_TYPE.PROJECT,
        starCount: 4,
      });
      const vm = createComponent(item);
-      vm.$mount();

      const projectStarIconEl = vm.$el.querySelector('.project-stars');
-      expect(projectStarIconEl).toBeDefined();
-      expect(projectStarIconEl.querySelector('i.fa.fa-star')).toBeDefined();
-      expect(projectStarIconEl.innerText.trim()).toBe(`${vm.item.starCount}`);
+      expect(projectStarIconEl).not.toBe(null);
+      expect(projectStarIconEl.querySelectorAll('svg').length > 0).toBeTruthy();
+      expect(projectStarIconEl.querySelectorAll('.stat-value').length > 0).toBeTruthy();
+      expect(vm.$el.querySelectorAll('.last-updated').length > 0).toBeTruthy();

      vm.$destroy();
    });

--- a/spec/javascripts/groups/components/item_stats_value_spec.js
+++ b/spec/javascripts/groups/components/item_stats_value_spec.js
+import Vue from 'vue';
+
+import itemStatsValueComponent from '~/groups/components/item_stats_value.vue';
+
+import mountComponent from '../../helpers/vue_mount_component_helper';
+
+const createComponent = ({ title, cssClass, iconName, tooltipPlacement, value }) => {
+  const Component = Vue.extend(itemStatsValueComponent);
+
+  return mountComponent(Component, {
+    title,
+    cssClass,
+    iconName,
+    tooltipPlacement,
+    value,
+  });
+};
+
+describe('ItemStatsValueComponent', () => {
+  describe('computed', () => {
+    let vm;
+    const itemConfig = {
+      title: 'Subgroups',
+      cssClass: 'number-subgroups',
+      iconName: 'folder',
+      tooltipPlacement: 'left',
+    };
+
+    describe('isValuePresent', () => {
+      it('returns true if non-empty `value` is present', () => {
+        vm = createComponent(Object.assign({}, itemConfig, { value: 10 }));
+        expect(vm.isValuePresent).toBeTruthy();
+      });
+
+      it('returns false if empty `value` is present', () => {
+        vm = createComponent(itemConfig);
+        expect(vm.isValuePresent).toBeFalsy();
+      });
+
+      afterEach(() => {
+        vm.$destroy();
+      });
+    });
+  });
+
+  describe('template', () => {
+    let vm;
+    beforeEach(() => {
+      vm = createComponent({
+        title: 'Subgroups',
+        cssClass: 'number-subgroups',
+        iconName: 'folder',
+        tooltipPlacement: 'left',
+        value: 10,
+      });
+    });
+
+    it('renders component element correctly', () => {
+      expect(vm.$el.classList.contains('number-subgroups')).toBeTruthy();
+      expect(vm.$el.querySelectorAll('svg').length > 0).toBeTruthy();
+      expect(vm.$el.querySelectorAll('.stat-value').length > 0).toBeTruthy();
+    });
+
+    it('renders element tooltip correctly', () => {
+      expect(vm.$el.dataset.originalTitle).toBe('Subgroups');
+      expect(vm.$el.dataset.placement).toBe('left');
+    });
+
+    it('renders element icon correctly', () => {
+      expect(vm.$el.querySelector('svg use').getAttribute('xlink:href')).toContain('folder');
+    });
+
+    it('renders value count correctly', () => {
+      expect(vm.$el.querySelector('.stat-value').innerText.trim()).toContain('10');
+    });
+
+    afterEach(() => {
+      vm.$destroy();
+    });
+  });
+});
--- a/spec/javascripts/groups/components/item_type_icon_spec.js
+++ b/spec/javascripts/groups/components/item_type_icon_spec.js
@@ -28,12 +28,12 @@ describe('ItemTypeIconComponent', () => {

      vm = createComponent(ITEM_TYPE.GROUP, true);
      vm.$mount();
-      expect(vm.$el.querySelector('i.fa.fa-folder-open')).toBeDefined();
+      expect(vm.$el.querySelector('use').getAttribute('xlink:href')).toContain('folder-open');
      vm.$destroy();

      vm = createComponent(ITEM_TYPE.GROUP);
      vm.$mount();
-      expect(vm.$el.querySelector('i.fa.fa-folder')).toBeDefined();
+      expect(vm.$el.querySelector('use').getAttribute('xlink:href')).toContain('folder');
      vm.$destroy();
    });

@@ -42,12 +42,12 @@ describe('ItemTypeIconComponent', () => {

      vm = createComponent(ITEM_TYPE.PROJECT);
      vm.$mount();
-      expect(vm.$el.querySelectorAll('i.fa.fa-bookmark').length).toBe(1);
+      expect(vm.$el.querySelector('use').getAttribute('xlink:href')).toContain('bookmark');
      vm.$destroy();

      vm = createComponent(ITEM_TYPE.GROUP);
      vm.$mount();
-      expect(vm.$el.querySelectorAll('i.fa.fa-bookmark').length).toBe(0);
+      expect(vm.$el.querySelector('use').getAttribute('xlink:href')).not.toContain('bookmark');
      vm.$destroy();
    });
  });

--- a/spec/javascripts/groups/mock_data.js
+++ b/spec/javascripts/groups/mock_data.js
@@ -18,9 +18,9 @@ export const PROJECT_VISIBILITY_TYPE = {
 };

 export const VISIBILITY_TYPE_ICON = {
-  public: 'fa-globe',
-  internal: 'fa-shield',
-  private: 'fa-lock',
+  public: 'earth',
+  internal: 'shield',
+  private: 'lock',
 };

 export const mockParentGroupItem = {
@@ -46,6 +46,7 @@ export const mockParentGroupItem = {
  isOpen: true,
  isChildrenLoading: false,
  isBeingRemoved: false,
+  updatedAt: '2017-04-09T18:40:39.101Z',
 };

 export const mockRawChildren = [
@@ -69,6 +70,7 @@ export const mockRawChildren = [
    subgroup_count: 2,
    can_leave: false,
    children: [],
+    updated_at: '2017-04-09T18:40:39.101Z',
  },
 ];

@@ -96,6 +98,7 @@ export const mockChildren = [
    isOpen: true,
    isChildrenLoading: false,
    isBeingRemoved: false,
+    updatedAt: '2017-04-09T18:40:39.101Z',
  },
 ];

@@ -119,6 +122,7 @@ export const mockGroups = [
    project_count: 2,
    subgroup_count: 0,
    can_leave: false,
+    updated_at: '2017-04-09T18:40:39.101Z',
  },
  {
    id: 67,
@@ -139,6 +143,7 @@ export const mockGroups = [
    project_count: 0,
    subgroup_count: 0,
    can_leave: false,
+    updated_at: '2017-04-09T18:40:39.101Z',
  },
  {
    id: 54,
@@ -159,6 +164,7 @@ export const mockGroups = [
    project_count: 0,
    subgroup_count: 1,
    can_leave: false,
+    updated_at: '2017-04-09T18:40:39.101Z',
  },
  {
    id: 5,
@@ -179,6 +185,7 @@ export const mockGroups = [
    project_count: 1,
    subgroup_count: 0,
    can_leave: false,
+    updated_at: '2017-04-09T18:40:39.101Z',
  },
  {
    id: 4,
@@ -199,6 +206,7 @@ export const mockGroups = [
    project_count: 2,
    subgroup_count: 0,
    can_leave: false,
+    updated_at: '2017-04-09T18:40:39.101Z',
  },
  {
    id: 3,
@@ -219,6 +227,7 @@ export const mockGroups = [
    project_count: 1,
    subgroup_count: 0,
    can_leave: false,
+    updated_at: '2017-04-09T18:40:39.101Z',
  },
  {
    id: 2,
@@ -239,6 +248,7 @@ export const mockGroups = [
    project_count: 4,
    subgroup_count: 0,
    can_leave: false,
+    updated_at: '2017-04-09T18:40:39.101Z',
  },
 ];

@@ -262,6 +272,7 @@ export const mockSearchedGroups = [
    project_count: 1,
    subgroup_count: 2,
    can_leave: false,
+    updated_at: '2017-04-09T18:40:39.101Z',
    children: [
      {
        id: 57,
@@ -282,6 +293,7 @@ export const mockSearchedGroups = [
        project_count: 4,
        subgroup_count: 2,
        can_leave: false,
+        updated_at: '2017-04-09T18:40:39.101Z',
        children: [
          {
            id: 60,
@@ -302,6 +314,7 @@ export const mockSearchedGroups = [
            project_count: 0,
            subgroup_count: 1,
            can_leave: false,
+            updated_at: '2017-04-09T18:40:39.101Z',
            children: [
              {
                id: 61,
@@ -322,6 +335,7 @@ export const mockSearchedGroups = [
                project_count: 2,
                subgroup_count: 0,
                can_leave: false,
+                updated_at: '2017-04-09T18:40:39.101Z',
                children: [
                  {
                    id: 17,
@@ -336,6 +350,7 @@ export const mockSearchedGroups = [
                    permission: null,
                    edit_path: '/platform/hardware/bsp/kernel/common/v4.4/edit',
                    star_count: 0,
+                    updated_at: '2017-09-12T06:37:04.925Z',
                  },
                  {
                    id: 16,
@@ -350,6 +365,7 @@ export const mockSearchedGroups = [
                    permission: null,
                    edit_path: '/platform/hardware/bsp/kernel/common/v4.1/edit',
                    star_count: 0,
+                    updated_at: '2017-04-09T18:41:03.112Z',
                  },
                ],
              },

--- a/spec/javascripts/vue_mr_widget/components/states/mr_widget_closed_spec.js
+++ b/spec/javascripts/vue_mr_widget/components/states/mr_widget_closed_spec.js
@@ -4,13 +4,16 @@ import closedComponent from '~/vue_merge_request_widget/components/states/mr_wid
 const mr = {
  targetBranch: 'good-branch',
  targetBranchPath: '/good-branch',
-  closedEvent: {
-    author: {
+  metrics: {
+    mergedBy: {},
+    mergedAt: 'mergedUpdatedAt',
+    closedBy: {
      name: 'Fatih Acet',
      username: 'fatihacet',
    },
-    updatedAt: 'closedEventUpdatedAt',
-    formattedUpdatedAt: '',
+    closedAt: 'closedEventUpdatedAt',
+    readableMergedAt: '',
+    readableClosedAt: '',
  },
  updatedAt: 'mrUpdatedAt',
  closedAt: '1 day ago',
@@ -56,7 +59,7 @@ describe('MRWidgetClosed', () => {

    it('should have correct elements', () => {
      expect(el.querySelector('h4').textContent).toContain('Closed by');
-      expect(el.querySelector('h4').textContent).toContain(mr.closedEvent.author.name);
+      expect(el.querySelector('h4').textContent).toContain(mr.metrics.closedBy.name);
      expect(el.textContent).toContain('The changes were not merged into');
      expect(el.querySelector('.label-branch').getAttribute('href')).toEqual(mr.targetBranchPath);
      expect(el.querySelector('.label-branch').textContent).toContain(mr.targetBranch);

--- a/spec/javascripts/vue_mr_widget/components/states/mr_widget_merged_spec.js
+++ b/spec/javascripts/vue_mr_widget/components/states/mr_widget_merged_spec.js
@@ -14,10 +14,13 @@ const createComponent = () => {
    canRevertInCurrentMR: true,
    canRemoveSourceBranch: true,
    sourceBranchRemoved: true,
-    mergedEvent: {
-      author: {},
-      updatedAt: 'mergedUpdatedAt',
-      formattedUpdatedAt: '',
+    metrics: {
+      mergedBy: {},
+      mergedAt: 'mergedUpdatedAt',
+      readableMergedAt: '',
+      closedBy: {},
+      closedAt: 'mergedUpdatedAt',
+      readableClosedAt: '',
    },
    updatedAt: 'mrUpdatedAt',
    targetBranch,

--- a/spec/javascripts/vue_mr_widget/mock_data.js
+++ b/spec/javascripts/vue_mr_widget/mock_data.js
@@ -33,8 +33,8 @@ export default {
  "source_project_id": 19,
  "target_branch": "master",
  "target_project_id": 19,
-  "merge_event": {
-    "author": {
+  "metrics": {
+    "merged_by": {
      "name": "Administrator",
      "username": "root",
      "id": 1,
@@ -42,9 +42,10 @@ export default {
      "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
      "web_url": "http://localhost:3000/root"
    },
-    "updated_at": "2017-04-07T15:39:25.696Z"
+    "merged_at": "2017-04-07T15:39:25.696Z",
+    "closed_by": null,
+    "closed_at": null
  },
-  "closed_event": null,
  "author": {
    "name": "Administrator",
    "username": "root",

--- a/spec/javascripts/vue_shared/components/panel_resizer_spec.js
+++ b/spec/javascripts/vue_shared/components/panel_resizer_spec.js
+import Vue from 'vue';
+import panelResizer from '~/vue_shared/components/panel_resizer.vue';
+import mountComponent from '../../helpers/vue_mount_component_helper';
+
+describe('Panel Resizer component', () => {
+  let vm;
+  let PanelResizer;
+
+  const triggerEvent = (eventName, el = vm.$el, clientX = 0) => {
+    const event = document.createEvent('MouseEvents');
+    event.initMouseEvent(eventName, true, true, window, 1, clientX, 0, clientX, 0, false, false,
+                         false, false, 0, null);
+
+    el.dispatchEvent(event);
+  };
+
+  beforeEach(() => {
+    PanelResizer = Vue.extend(panelResizer);
+  });
+
+  afterEach(() => {
+    vm.$destroy();
+  });
+
+  it('should render a div element with the correct classes and styles', () => {
+    vm = mountComponent(PanelResizer, {
+      startSize: 100,
+      side: 'left',
+    });
+
+    expect(vm.$el.tagName).toEqual('DIV');
+    expect(vm.$el.getAttribute('class')).toBe('dragHandle dragleft');
+    expect(vm.$el.getAttribute('style')).toBe('cursor: ew-resize;');
+  });
+
+  it('should render a div element with the correct classes for a right side panel', () => {
+    vm = mountComponent(PanelResizer, {
+      startSize: 100,
+      side: 'right',
+    });
+
+    expect(vm.$el.tagName).toEqual('DIV');
+    expect(vm.$el.getAttribute('class')).toBe('dragHandle dragright');
+  });
+
+  it('drag the resizer', () => {
+    vm = mountComponent(PanelResizer, {
+      startSize: 100,
+      side: 'left',
+    });
+
+    spyOn(vm, '$emit');
+    triggerEvent('mousedown', vm.$el);
+    triggerEvent('mousemove', document);
+    triggerEvent('mouseup', document);
+    expect(vm.$emit.calls.allArgs()).toEqual([['resize-start', 100], ['update:size', 100], ['resize-end', 100]]);
+    expect(vm.size).toBe(100);
+  });
+});
--- a/spec/lib/gitlab/background_migration/migrate_events_to_push_event_payloads_spec.rb
+++ b/spec/lib/gitlab/background_migration/migrate_events_to_push_event_payloads_spec.rb
@@ -281,6 +281,17 @@ describe Gitlab::BackgroundMigration::MigrateEventsToPushEventPayloads, :migrati

      migration.process_event(event)
    end
+
+    it 'handles an error gracefully' do
+      event1 = create_push_event(project, author, { commits: [] })
+
+      expect(migration).to receive(:replicate_event).and_call_original
+      expect(migration).to receive(:create_push_event_payload).and_raise(ActiveRecord::InvalidForeignKey, 'invalid foreign key')
+
+      migration.process_event(event1)
+
+      expect(described_class::EventForMigration.all.count).to eq(0)
+    end
  end

  describe '#replicate_event' do
@@ -335,9 +346,8 @@ describe Gitlab::BackgroundMigration::MigrateEventsToPushEventPayloads, :migrati
    it 'does not create push event payloads for removed events' do
      allow(event).to receive(:id).and_return(-1)

-      payload = migration.create_push_event_payload(event)
+      expect { migration.create_push_event_payload(event) }.to raise_error(ActiveRecord::InvalidForeignKey)

-      expect(payload).to be_nil
      expect(PushEventPayload.count).to eq(0)
    end


--- a/spec/lib/gitlab/background_migration/populate_merge_request_metrics_with_events_data_spec.rb
+++ b/spec/lib/gitlab/background_migration/populate_merge_request_metrics_with_events_data_spec.rb
+require 'rails_helper'
+
+describe Gitlab::BackgroundMigration::PopulateMergeRequestMetricsWithEventsData, :migration, schema: 20171128214150 do
+  describe '#perform' do
+    let(:mr_with_event) { create(:merge_request) }
+    let!(:merged_event) { create(:event, :merged, target: mr_with_event) }
+    let!(:closed_event) { create(:event, :closed, target: mr_with_event) }
+
+    before do
+      # Make sure no metrics are created and kept through after_* callbacks.
+      mr_with_event.metrics.destroy!
+    end
+
+    it 'inserts metrics and updates closed and merged events' do
+      subject.perform(mr_with_event.id, mr_with_event.id)
+
+      mr_with_event.reload
+
+      expect(mr_with_event.metrics).to have_attributes(latest_closed_by_id: closed_event.author_id,
+                                                       merged_by_id: merged_event.author_id)
+      expect(mr_with_event.metrics.latest_closed_at.to_s).to eq(closed_event.updated_at.to_s)
+    end
+  end
+
+  describe '#insert_metrics_for_range' do
+    let!(:mrs_without_metrics) { create_list(:merge_request, 3) }
+    let!(:mrs_with_metrics) { create_list(:merge_request, 2) }
+
+    before do
+      # Make sure no metrics are created and kept through after_* callbacks.
+      mrs_without_metrics.each { |m| m.metrics.destroy! }
+    end
+
+    it 'inserts merge_request_metrics for merge_requests without one' do
+      expect { subject.insert_metrics_for_range(MergeRequest.first.id, MergeRequest.last.id) }
+        .to change(MergeRequest::Metrics, :count).from(2).to(5)
+
+      mrs_without_metrics.each do |mr_without_metrics|
+        expect(mr_without_metrics.reload.metrics).to be_present
+      end
+    end
+
+    it 'does not inserts merge_request_metrics for MRs out of given range' do
+      expect { subject.insert_metrics_for_range(mrs_with_metrics.first.id, mrs_with_metrics.last.id) }
+        .not_to change(MergeRequest::Metrics, :count).from(2)
+    end
+  end
+
+  describe '#update_metrics_with_events_data' do
+    context 'closed events data update' do
+      let(:users) { create_list(:user, 3) }
+      let(:mrs_with_event) { create_list(:merge_request, 3) }
+
+      before do
+        create_list(:event, 2, :closed, author: users.first, target: mrs_with_event.first)
+        create_list(:event, 3, :closed, author: users.second, target: mrs_with_event.second)
+        create(:event, :closed, author: users.third, target: mrs_with_event.third)
+      end
+
+      it 'migrates multiple MR metrics with closed event data' do
+        mr_without_event = create(:merge_request)
+        create(:event, :merged)
+
+        subject.update_metrics_with_events_data(mrs_with_event.first.id, mrs_with_event.last.id)
+
+        mrs_with_event.each do |mr_with_event|
+          latest_event = Event.where(action: 3, target: mr_with_event).last
+
+          mr_with_event.metrics.reload
+
+          expect(mr_with_event.metrics.latest_closed_by).to eq(latest_event.author)
+          expect(mr_with_event.metrics.latest_closed_at.to_s).to eq(latest_event.updated_at.to_s)
+        end
+
+        expect(mr_without_event.metrics.reload).to have_attributes(latest_closed_by_id: nil,
+                                                                   latest_closed_at: nil)
+      end
+
+      it 'does not updates metrics out of given range' do
+        out_of_range_mr = create(:merge_request)
+        create(:event, :closed, author: users.last, target: out_of_range_mr)
+
+        expect { subject.perform(mrs_with_event.first.id, mrs_with_event.second.id) }
+          .not_to change { out_of_range_mr.metrics.reload.merged_by }
+          .from(nil)
+      end
+    end
+
+    context 'merged events data update' do
+      let(:users) { create_list(:user, 3) }
+      let(:mrs_with_event) { create_list(:merge_request, 3) }
+
+      before do
+        create_list(:event, 2, :merged, author: users.first, target: mrs_with_event.first)
+        create_list(:event, 3, :merged, author: users.second, target: mrs_with_event.second)
+        create(:event, :merged, author: users.third, target: mrs_with_event.third)
+      end
+
+      it 'migrates multiple MR metrics with merged event data' do
+        mr_without_event = create(:merge_request)
+        create(:event, :merged)
+
+        subject.update_metrics_with_events_data(mrs_with_event.first.id, mrs_with_event.last.id)
+
+        mrs_with_event.each do |mr_with_event|
+          latest_event = Event.where(action: Event::MERGED, target: mr_with_event).last
+
+          expect(mr_with_event.metrics.reload.merged_by).to eq(latest_event.author)
+        end
+
+        expect(mr_without_event.metrics.reload).to have_attributes(merged_by_id: nil)
+      end
+
+      it 'does not updates metrics out of given range' do
+        out_of_range_mr = create(:merge_request)
+        create(:event, :merged, author: users.last, target: out_of_range_mr)
+
+        expect { subject.perform(mrs_with_event.first.id, mrs_with_event.second.id) }
+          .not_to change { out_of_range_mr.metrics.reload.merged_by }
+          .from(nil)
+      end
+    end
+  end
+end
--- a/spec/lib/gitlab/database/migration_helpers_spec.rb
+++ b/spec/lib/gitlab/database/migration_helpers_spec.rb
@@ -902,7 +902,7 @@ describe Gitlab::Database::MigrationHelpers do
  describe '#check_trigger_permissions!' do
    it 'does nothing when the user has the correct permissions' do
      expect { model.check_trigger_permissions!('users') }
-        .not_to raise_error(RuntimeError)
+        .not_to raise_error
    end

    it 'raises RuntimeError when the user does not have the correct permissions' do
@@ -1036,4 +1036,93 @@ describe Gitlab::Database::MigrationHelpers do
      end
    end
  end
+
+  describe '#change_column_type_using_background_migration' do
+    let!(:issue) { create(:issue) }
+
+    let(:issue_model) do
+      Class.new(ActiveRecord::Base) do
+        self.table_name = 'issues'
+        include EachBatch
+      end
+    end
+
+    it 'changes the type of a column using a background migration' do
+      expect(model)
+        .to receive(:add_column)
+        .with('issues', 'closed_at_for_type_change', :datetime_with_timezone)
+
+      expect(model)
+        .to receive(:install_rename_triggers)
+        .with('issues', :closed_at, 'closed_at_for_type_change')
+
+      expect(BackgroundMigrationWorker)
+        .to receive(:perform_in)
+        .ordered
+        .with(
+          10.minutes,
+          'CopyColumn',
+          ['issues', :closed_at, 'closed_at_for_type_change', issue.id, issue.id]
+        )
+
+      expect(BackgroundMigrationWorker)
+        .to receive(:perform_in)
+        .ordered
+        .with(
+          1.hour + 10.minutes,
+          'CleanupConcurrentTypeChange',
+          ['issues', :closed_at, 'closed_at_for_type_change']
+        )
+
+      expect(Gitlab::BackgroundMigration)
+        .to receive(:steal)
+        .ordered
+        .with('CopyColumn')
+
+      expect(Gitlab::BackgroundMigration)
+        .to receive(:steal)
+        .ordered
+        .with('CleanupConcurrentTypeChange')
+
+      model.change_column_type_using_background_migration(
+        issue_model.all,
+        :closed_at,
+        :datetime_with_timezone
+      )
+    end
+  end
+
+  describe '#perform_background_migration_inline?' do
+    it 'returns true in a test environment' do
+      allow(Rails.env)
+        .to receive(:test?)
+        .and_return(true)
+
+      expect(model.perform_background_migration_inline?).to eq(true)
+    end
+
+    it 'returns true in a development environment' do
+      allow(Rails.env)
+        .to receive(:test?)
+        .and_return(false)
+
+      allow(Rails.env)
+        .to receive(:development?)
+        .and_return(true)
+
+      expect(model.perform_background_migration_inline?).to eq(true)
+    end
+
+    it 'returns false in a production environment' do
+      allow(Rails.env)
+        .to receive(:test?)
+        .and_return(false)
+
+      allow(Rails.env)
+        .to receive(:development?)
+        .and_return(false)
+
+      expect(model.perform_background_migration_inline?).to eq(false)
+    end
+  end
 end
--- a/spec/lib/gitlab/git/repository_spec.rb
+++ b/spec/lib/gitlab/git/repository_spec.rb
@@ -1015,7 +1015,7 @@ describe Gitlab::Git::Repository, seed_helper: true do
    shared_examples 'extended commit counting' do
      context 'with after timestamp' do
        it 'returns the number of commits after timestamp' do
-          options = { ref: 'master', limit: nil, after: Time.iso8601('2013-03-03T20:15:01+00:00') }
+          options = { ref: 'master', after: Time.iso8601('2013-03-03T20:15:01+00:00') }

          expect(repository.count_commits(options)).to eq(25)
        end
@@ -1023,7 +1023,7 @@ describe Gitlab::Git::Repository, seed_helper: true do

      context 'with before timestamp' do
        it 'returns the number of commits before timestamp' do
-          options = { ref: 'feature', limit: nil, before: Time.iso8601('2015-03-03T20:15:01+00:00') }
+          options = { ref: 'feature', before: Time.iso8601('2015-03-03T20:15:01+00:00') }

          expect(repository.count_commits(options)).to eq(9)
        end
@@ -1031,11 +1031,19 @@ describe Gitlab::Git::Repository, seed_helper: true do

      context 'with path' do
        it 'returns the number of commits with path ' do
-          options = { ref: 'master', limit: nil, path: "encoding" }
+          options = { ref: 'master', path: "encoding" }

          expect(repository.count_commits(options)).to eq(2)
        end
      end
+
+      context 'with max_count' do
+        it 'returns the number of commits up to the passed limit' do
+          options = { ref: 'master', max_count: 10, after: Time.iso8601('2013-03-03T20:15:01+00:00') }
+
+          expect(repository.count_commits(options)).to eq(10)
+        end
+      end
    end

    context 'when Gitaly count_commits feature is enabled' do
@@ -1719,6 +1727,20 @@ describe Gitlab::Git::Repository, seed_helper: true do
        expect(result.repo_created).to eq(false)
        expect(result.branch_created).to eq(false)
      end
+
+      it 'returns nil if there was a concurrent branch update' do
+        concurrent_update_id = '33f3729a45c02fc67d00adb1b8bca394b0e761d9'
+        result = repository.merge(user, source_sha, target_branch, 'Test merge') do
+          # This ref update should make the merge fail
+          repository.write_ref(Gitlab::Git::BRANCH_REF_PREFIX + target_branch, concurrent_update_id)
+        end
+
+        # This 'nil' signals that the merge was not applied
+        expect(result).to be_nil
+
+        # Our concurrent ref update should not have been undone
+        expect(repository.find_branch(target_branch).target).to eq(concurrent_update_id)
+      end
    end

    context 'with gitaly' do

--- a/spec/migrations/schedule_populate_merge_request_metrics_with_events_data_spec.rb
+++ b/spec/migrations/schedule_populate_merge_request_metrics_with_events_data_spec.rb
+require 'spec_helper'
+require Rails.root.join('db', 'post_migrate', '20171128214150_schedule_populate_merge_request_metrics_with_events_data.rb')
+
+describe SchedulePopulateMergeRequestMetricsWithEventsData, :migration, :sidekiq do
+  let!(:mrs) { create_list(:merge_request, 3) }
+
+  it 'correctly schedules background migrations' do
+    stub_const("#{described_class.name}::BATCH_SIZE", 2)
+
+    Sidekiq::Testing.fake! do
+      Timecop.freeze do
+        migrate!
+
+        expect(described_class::MIGRATION)
+          .to be_scheduled_migration(10.minutes, mrs.first.id, mrs.second.id)
+
+        expect(described_class::MIGRATION)
+          .to be_scheduled_migration(20.minutes, mrs.third.id, mrs.third.id)
+
+        expect(BackgroundMigrationWorker.jobs.size).to eq(2)
+      end
+    end
+  end
+end
--- a/spec/models/issue_spec.rb
+++ b/spec/models/issue_spec.rb
@@ -23,6 +23,32 @@ describe Issue do
    it { is_expected.to have_db_index(:deleted_at) }
  end

+  describe 'callbacks' do
+    describe '#ensure_metrics' do
+      it 'creates metrics after saving' do
+        issue = create(:issue)
+
+        expect(issue.metrics).to be_persisted
+        expect(Issue::Metrics.count).to eq(1)
+      end
+
+      it 'does not create duplicate metrics for an issue' do
+        issue = create(:issue)
+
+        issue.close!
+
+        expect(issue.metrics).to be_persisted
+        expect(Issue::Metrics.count).to eq(1)
+      end
+
+      it 'records current metrics' do
+        expect_any_instance_of(Issue::Metrics).to receive(:record!)
+
+        create(:issue)
+      end
+    end
+  end
+
  describe '#order_by_position_and_priority' do
    let(:project) { create :project }
    let(:p1) { create(:label, title: 'P1', project: project, priority: 1) }

--- a/spec/models/merge_request/metrics_spec.rb
+++ b/spec/models/merge_request/metrics_spec.rb
 require 'spec_helper'

 describe MergeRequest::Metrics do
-  subject { create(:merge_request) }
+  subject { described_class.new }

-  describe "when recording the default set of metrics on merge request save" do
-    it "records the merge time" do
-      time = Time.now
-      Timecop.freeze(time) { subject.mark_as_merged }
-      metrics = subject.metrics
-
-      expect(metrics).to be_present
-      expect(metrics.merged_at).to be_like_time(time)
-    end
+  describe 'associations' do
+    it { is_expected.to belong_to(:merge_request) }
+    it { is_expected.to belong_to(:latest_closed_by).class_name('User') }
+    it { is_expected.to belong_to(:merged_by).class_name('User') }
  end
 end
--- a/spec/models/merge_request_spec.rb
+++ b/spec/models/merge_request_spec.rb
@@ -65,6 +65,25 @@ describe MergeRequest do
    end
  end

+  describe 'callbacks' do
+    describe '#ensure_merge_request_metrics' do
+      it 'creates metrics after saving' do
+        merge_request = create(:merge_request)
+
+        expect(merge_request.metrics).to be_persisted
+        expect(MergeRequest::Metrics.count).to eq(1)
+      end
+
+      it 'does not duplicate metrics for a merge request' do
+        merge_request = create(:merge_request)
+
+        merge_request.mark_as_merged!
+
+        expect(MergeRequest::Metrics.count).to eq(1)
+      end
+    end
+  end
+
  describe 'respond to' do
    it { is_expected.to respond_to(:unchecked?) }
    it { is_expected.to respond_to(:can_be_merged?) }

--- a/spec/models/project_services/kubernetes_service_spec.rb
+++ b/spec/models/project_services/kubernetes_service_spec.rb
@@ -52,12 +52,75 @@ describe KubernetesService, :use_clean_rails_memory_store_caching do

    context 'when service is inactive' do
      before do
+        subject.project = project
        subject.active = false
      end

      it { is_expected.not_to validate_presence_of(:api_url) }
      it { is_expected.not_to validate_presence_of(:token) }
    end
+
+    context 'with a deprecated service' do
+      let(:kubernetes_service) { create(:kubernetes_service) }
+
+      before do
+        kubernetes_service.update_attribute(:active, false)
+        kubernetes_service.properties[:namespace] = "foo"
+      end
+
+      it 'should not update attributes' do
+        expect(kubernetes_service.save).to be_falsy
+      end
+
+      it 'should include an error with a deprecation message' do
+        kubernetes_service.valid?
+        expect(kubernetes_service.errors[:base].first).to match(/Kubernetes service integration has been deprecated/)
+      end
+    end
+
+    context 'with a non-deprecated service' do
+      let(:kubernetes_service) { create(:kubernetes_service) }
+
+      it 'should update attributes' do
+        kubernetes_service.properties[:namespace] = 'foo'
+        expect(kubernetes_service.save).to be_truthy
+      end
+    end
+
+    context 'with an active and deprecated service' do
+      let(:kubernetes_service) { create(:kubernetes_service) }
+
+      before do
+        kubernetes_service.active = false
+        kubernetes_service.properties[:namespace] = 'foo'
+        kubernetes_service.save
+      end
+
+      it 'should deactive the service' do
+        expect(kubernetes_service.active?).to be_falsy
+      end
+
+      it 'should not include a deprecation message as error' do
+        expect(kubernetes_service.errors.messages.count).to eq(0)
+      end
+
+      it 'should update attributes' do
+        expect(kubernetes_service.properties[:namespace]).to eq("foo")
+      end
+    end
+
+    context 'with a template service' do
+      let(:kubernetes_service) { create(:kubernetes_service, template: true, active: false) }
+
+      before do
+        kubernetes_service.properties[:namespace] = 'foo'
+      end
+
+      it 'should update attributes' do
+        expect(kubernetes_service.save).to be_truthy
+        expect(kubernetes_service.properties[:namespace]).to eq('foo')
+      end
+    end
  end

  describe '#initialize_properties' do
@@ -318,4 +381,42 @@ describe KubernetesService, :use_clean_rails_memory_store_caching do
      it { is_expected.to eq(pods: []) }
    end
  end
+
+  describe "#deprecated?" do
+    let(:kubernetes_service) { create(:kubernetes_service) }
+
+    context 'with an active kubernetes service' do
+      it 'should return false' do
+        expect(kubernetes_service.deprecated?).to be_falsy
+      end
+    end
+
+    context 'with a inactive kubernetes service' do
+      it 'should return true' do
+        kubernetes_service.update_attribute(:active, false)
+        expect(kubernetes_service.deprecated?).to be_truthy
+      end
+    end
+  end
+
+  describe "#deprecation_message" do
+    let(:kubernetes_service) { create(:kubernetes_service) }
+
+    it 'should indicate the service is deprecated' do
+      expect(kubernetes_service.deprecation_message).to match(/Kubernetes service integration has been deprecated/)
+    end
+
+    context 'if the services is active' do
+      it 'should return a message' do
+        expect(kubernetes_service.deprecation_message).to match(/Your cluster information on this page is still editable/)
+      end
+    end
+
+    context 'if the service is not active' do
+      it 'should return a message' do
+        kubernetes_service.update_attribute(:active, false)
+        expect(kubernetes_service.deprecation_message).to match(/Fields on this page are now uneditable/)
+      end
+    end
+  end
 end
--- a/spec/models/service_spec.rb
+++ b/spec/models/service_spec.rb
@@ -254,4 +254,22 @@ describe Service do
      end
    end
  end
+
+  describe "#deprecated?" do
+    let(:project) { create(:project, :repository) }
+
+    it 'should return false by default' do
+      service = create(:service, project: project)
+      expect(service.deprecated?).to be_falsy
+    end
+  end
+
+  describe "#deprecation_message" do
+    let(:project) { create(:project, :repository) }
+
+    it 'should be empty by default' do
+      service = create(:service, project: project)
+      expect(service.deprecation_message).to be_nil
+    end
+  end
 end
--- a/spec/requests/api/notes_spec.rb
+++ b/spec/requests/api/notes_spec.rb
@@ -464,7 +464,7 @@ describe API::Notes do

  describe "POST /projects/:id/noteable/:noteable_id/notes to test observer on create" do
    it "creates an activity event when an issue note is created" do
-      expect(Event).to receive(:create)
+      expect(Event).to receive(:create!)

      post api("/projects/#{project.id}/issues/#{issue.iid}/notes", user), body: 'hi!'
    end

--- a/spec/requests/api/project_milestones_spec.rb
+++ b/spec/requests/api/project_milestones_spec.rb
@@ -16,7 +16,7 @@ describe API::ProjectMilestones do

  describe 'PUT /projects/:id/milestones/:milestone_id to test observer on close' do
    it 'creates an activity event when an milestone is closed' do
-      expect(Event).to receive(:create)
+      expect(Event).to receive(:create!)

      put api("/projects/#{project.id}/milestones/#{milestone.id}", user),
          state_event: 'close'

--- a/spec/requests/api/services_spec.rb
+++ b/spec/requests/api/services_spec.rb
@@ -53,6 +53,10 @@ describe API::Services do
    describe "DELETE /projects/:id/services/#{service.dasherize}" do
      include_context service

+      before do
+        initialize_service(service)
+      end
+
      it "deletes #{service}" do
        delete api("/projects/#{project.id}/services/#{dashed_service}", user)

@@ -67,9 +71,7 @@ describe API::Services do

      # inject some properties into the service
      before do
-        service_object = project.find_or_initialize_service(service)
-        service_object.properties = service_attrs
-        service_object.save
+        initialize_service(service)
      end

      it 'returns authentication error when unauthenticated' do

--- a/spec/requests/api/v3/milestones_spec.rb
+++ b/spec/requests/api/v3/milestones_spec.rb
@@ -161,7 +161,7 @@ describe API::V3::Milestones do

  describe 'PUT /projects/:id/milestones/:milestone_id to test observer on close' do
    it 'creates an activity event when an milestone is closed' do
-      expect(Event).to receive(:create)
+      expect(Event).to receive(:create!)

      put v3_api("/projects/#{project.id}/milestones/#{milestone.id}", user),
          state_event: 'close'

--- a/spec/requests/api/v3/notes_spec.rb
+++ b/spec/requests/api/v3/notes_spec.rb
@@ -302,7 +302,7 @@ describe API::V3::Notes do

  describe "POST /projects/:id/noteable/:noteable_id/notes to test observer on create" do
    it "creates an activity event when an issue note is created" do
-      expect(Event).to receive(:create)
+      expect(Event).to receive(:create!)

      post v3_api("/projects/#{project.id}/issues/#{issue.id}/notes", user), body: 'hi!'
    end

--- a/spec/requests/api/v3/services_spec.rb
+++ b/spec/requests/api/v3/services_spec.rb
@@ -10,6 +10,10 @@ describe API::V3::Services do
    describe "DELETE /projects/:id/services/#{service.dasherize}" do
      include_context service

+      before do
+        initialize_service(service)
+      end
+
      it "deletes #{service}" do
        delete v3_api("/projects/#{project.id}/services/#{dashed_service}", user)


--- a/spec/requests/api/wikis_spec.rb
+++ b/spec/requests/api/wikis_spec.rb
@@ -12,6 +12,8 @@ require 'spec_helper'

 describe API::Wikis do
  let(:user) { create(:user) }
+  let(:group) { create(:group).tap { |g| g.add_owner(user) } }
+  let(:project_wiki) { create(:project_wiki, project: project, user: user) }
  let(:payload) { { content: 'content', format: 'rdoc', title: 'title' } }
  let(:expected_keys_with_content) { %w(content format slug title) }
  let(:expected_keys_without_content) { %w(format slug title) }
@@ -19,8 +21,8 @@ describe API::Wikis do
  shared_examples_for 'returns list of wiki pages' do
    context 'when wiki has pages' do
      let!(:pages) do
-        [create(:wiki_page, wiki: project.wiki, attrs: { title: 'page1', content: 'content of page1' }),
-         create(:wiki_page, wiki: project.wiki, attrs: { title: 'page2', content: 'content of page2' })]
+        [create(:wiki_page, wiki: project_wiki, attrs: { title: 'page1', content: 'content of page1' }),
+         create(:wiki_page, wiki: project_wiki, attrs: { title: 'page2', content: 'content of page2' })]
      end

      it 'returns the list of wiki pages without content' do
@@ -445,7 +447,7 @@ describe API::Wikis do
  end

  describe 'PUT /projects/:id/wikis/:slug' do
-    let(:page) { create(:wiki_page, wiki: project.wiki) }
+    let(:page) { create(:wiki_page, wiki: project_wiki) }
    let(:payload) { { title: 'new title', content: 'new content' } }
    let(:url) { "/projects/#{project.id}/wikis/#{page.slug}" }

@@ -568,10 +570,20 @@ describe API::Wikis do
        end
      end
    end
+
+    context 'when wiki belongs to a group project' do
+      let(:project) { create(:project, namespace: group) }
+
+      before do
+        put(api(url, user), payload)
+      end
+
+      include_examples 'updates wiki page'
+    end
  end

  describe 'DELETE /projects/:id/wikis/:slug' do
-    let(:page) { create(:wiki_page, wiki: project.wiki) }
+    let(:page) { create(:wiki_page, wiki: project_wiki) }
    let(:url) { "/projects/#{project.id}/wikis/#{page.slug}" }

    context 'when wiki is disabled' do
@@ -675,5 +687,15 @@ describe API::Wikis do
        end
      end
    end
+
+    context 'when wiki belongs to a group project' do
+      let(:project) { create(:project, namespace: group) }
+
+      before do
+        delete(api(url, user))
+      end
+
+      include_examples '204 No Content'
+    end
  end
 end
--- a/spec/serializers/event_entity_spec.rb
+++ b/spec/serializers/event_entity_spec.rb
-require 'spec_helper'
-
-describe EventEntity do
-  subject { described_class.represent(create(:event)).as_json }
-
-  it 'exposes author' do
-    expect(subject).to include(:author)
-  end
-
-  it 'exposes core elements of event' do
-    expect(subject).to include(:updated_at)
-  end
-end
--- a/spec/serializers/merge_request_widget_entity_spec.rb
+++ b/spec/serializers/merge_request_widget_entity_spec.rb
@@ -35,6 +35,81 @@ describe MergeRequestWidgetEntity do
    end
  end

+  describe 'metrics' do
+    context 'when metrics record exists with merged data' do
+      before do
+        resource.mark_as_merged!
+        resource.metrics.update!(merged_by: user)
+      end
+
+      it 'matches merge request metrics schema' do
+        expect(subject[:metrics].with_indifferent_access)
+          .to match_schema('entities/merge_request_metrics')
+      end
+
+      it 'returns values from metrics record' do
+        expect(subject.dig(:metrics, :merged_by, :id))
+          .to eq(resource.metrics.merged_by_id)
+      end
+    end
+
+    context 'when metrics record exists with closed data' do
+      before do
+        resource.close!
+        resource.metrics.update!(latest_closed_by: user)
+      end
+
+      it 'matches merge request metrics schema' do
+        expect(subject[:metrics].with_indifferent_access)
+          .to match_schema('entities/merge_request_metrics')
+      end
+
+      it 'returns values from metrics record' do
+        expect(subject.dig(:metrics, :closed_by, :id))
+          .to eq(resource.metrics.latest_closed_by_id)
+      end
+    end
+
+    context 'when metrics does not exists' do
+      before do
+        resource.mark_as_merged!
+        resource.metrics.destroy!
+        resource.reload
+      end
+
+      context 'when events exists' do
+        let!(:closed_event) { create(:event, :closed, project: project, target: resource) }
+        let!(:merge_event) { create(:event, :merged, project: project, target: resource) }
+
+        it 'matches merge request metrics schema' do
+          expect(subject[:metrics].with_indifferent_access)
+            .to match_schema('entities/merge_request_metrics')
+        end
+
+        it 'returns values from events record' do
+          expect(subject.dig(:metrics, :merged_by, :id))
+            .to eq(merge_event.author_id)
+
+          expect(subject.dig(:metrics, :closed_by, :id))
+            .to eq(closed_event.author_id)
+
+          expect(subject.dig(:metrics, :merged_at).to_s)
+            .to eq(merge_event.updated_at.to_s)
+
+          expect(subject.dig(:metrics, :closed_at).to_s)
+            .to eq(closed_event.updated_at.to_s)
+        end
+      end
+
+      context 'when events does not exists' do
+        it 'matches merge request metrics schema' do
+          expect(subject[:metrics].with_indifferent_access)
+            .to match_schema('entities/merge_request_metrics')
+        end
+      end
+    end
+  end
+
  it 'has email_patches_path' do
    expect(subject[:email_patches_path])
      .to eq("/#{resource.project.full_path}/merge_requests/#{resource.iid}.patch")

--- a/spec/services/create_deployment_service_spec.rb
+++ b/spec/services/create_deployment_service_spec.rb
@@ -266,7 +266,7 @@ describe CreateDeploymentService do

    context "while updating the 'first_deployed_to_production_at' time" do
      before do
-        merge_request.mark_as_merged
+        merge_request.metrics.update!(merged_at: Time.now)
      end

      context "for merge requests merged before the current deploy" do

--- a/spec/services/merge_requests/close_service_spec.rb
+++ b/spec/services/merge_requests/close_service_spec.rb
@@ -52,6 +52,19 @@ describe MergeRequests::CloseService do
      end
    end

+    it 'updates metrics' do
+      metrics = merge_request.metrics
+      metrics_service = double(MergeRequestMetricsService)
+      allow(MergeRequestMetricsService)
+        .to receive(:new)
+        .with(metrics)
+        .and_return(metrics_service)
+
+      expect(metrics_service).to receive(:close)
+
+      described_class.new(project, user, {}).execute(merge_request)
+    end
+
    it 'refreshes the number of open merge requests for a valid MR', :use_clean_rails_memory_store_caching do
      service = described_class.new(project, user, {})


--- a/spec/services/merge_requests/post_merge_service_spec.rb
+++ b/spec/services/merge_requests/post_merge_service_spec.rb
@@ -22,5 +22,18 @@ describe MergeRequests::PostMergeService do
      expect { service.execute(merge_request) }
        .to change { project.open_merge_requests_count }.from(1).to(0)
    end
+
+    it 'updates metrics' do
+      metrics = merge_request.metrics
+      metrics_service = double(MergeRequestMetricsService)
+      allow(MergeRequestMetricsService)
+        .to receive(:new)
+        .with(metrics)
+        .and_return(metrics_service)
+
+      expect(metrics_service).to receive(:merge)
+
+      described_class.new(project, user, {}).execute(merge_request)
+    end
  end
 end
--- a/spec/services/merge_requests/reopen_service_spec.rb
+++ b/spec/services/merge_requests/reopen_service_spec.rb
@@ -47,6 +47,19 @@ describe MergeRequests::ReopenService do
      end
    end

+    it 'updates metrics' do
+      metrics = merge_request.metrics
+      service = double(MergeRequestMetricsService)
+      allow(MergeRequestMetricsService)
+        .to receive(:new)
+        .with(metrics)
+        .and_return(service)
+
+      expect(service).to receive(:reopen)
+
+      described_class.new(project, user, {}).execute(merge_request)
+    end
+
    it 'refreshes the number of open merge requests for a valid MR' do
      service = described_class.new(project, user, {})


--- a/spec/services/update_merge_request_metrics_service_spec.rb
+++ b/spec/services/update_merge_request_metrics_service_spec.rb
+require 'rails_helper'
+
+describe MergeRequestMetricsService do
+  let(:metrics) { create(:merge_request).metrics }
+
+  describe '#merge' do
+    it 'updates metrics' do
+      user = create(:user)
+      service = described_class.new(metrics)
+      event = double(Event, author_id: user.id, created_at: Time.now)
+
+      service.merge(event)
+
+      expect(metrics.merged_by).to eq(user)
+      expect(metrics.merged_at).to eq(event.created_at)
+    end
+  end
+
+  describe '#close' do
+    it 'updates metrics' do
+      user = create(:user)
+      service = described_class.new(metrics)
+      event = double(Event, author_id: user.id, created_at: Time.now)
+
+      service.close(event)
+
+      expect(metrics.latest_closed_by).to eq(user)
+      expect(metrics.latest_closed_at).to eq(event.created_at)
+    end
+  end
+
+  describe '#reopen' do
+    it 'updates metrics' do
+      service = described_class.new(metrics)
+
+      service.reopen
+
+      expect(metrics.latest_closed_by).to be_nil
+      expect(metrics.latest_closed_at).to be_nil
+    end
+  end
+end
--- a/spec/support/services_shared_context.rb
+++ b/spec/support/services_shared_context.rb
@@ -29,5 +29,13 @@ Service.available_services_names.each do |service|
        end
      end
    end
+
+    def initialize_service(service)
+      service_item = project.find_or_initialize_service(service)
+      service_item.properties = service_attrs
+      service_item.active = true if service == "kubernetes"
+      service_item.save
+      service_item
+    end
  end
 end