Merge remote-tracking branch 'origin/list-multiple-clusters' into cluster-page-with-list-clusters

23 files changed, 456 insertions, 154 deletions

diff --git a/app/assets/javascripts/clusters/clusters_bundle.js b/app/assets/javascripts/clusters/clusters_bundle.js
index cdb5c430aa9..2cfd6179a25 100644
--- a/app/assets/javascripts/clusters/clusters_bundle.js
+++ b/app/assets/javascripts/clusters/clusters_bundle.js
@@ -150,8 +150,8 @@ export default class Clusters {
   }
 
   toggle() {
-    this.toggleButton.classList.toggle('checked');
-    this.toggleInput.setAttribute('value', this.toggleButton.classList.contains('checked').toString());
+    this.toggleButton.classList.toggle('is-checked');
+    this.toggleInput.setAttribute('value', this.toggleButton.classList.contains('is-checked').toString());
   }
 
   showToken() {
diff --git a/app/assets/javascripts/clusters/clusters_index.js b/app/assets/javascripts/clusters/clusters_index.js
new file mode 100644
index 00000000000..3fd188a8770
--- /dev/null
+++ b/app/assets/javascripts/clusters/clusters_index.js
@@ -0,0 +1,57 @@
+import Flash from '../flash';
+import { s__ } from '../locale';
+import ClustersService from './services/clusters_service';
+/**
+ * Toggles loading and disabled classes.
+ * @param {HTMLElement} button
+ */
+const toggleLoadingButton = (button) => {
+  if (button.getAttribute('disabled')) {
+    button.removeAttribute('disabled');
+  } else {
+    button.setAttribute('disabled', true);
+  }
+
+  button.classList.toggle('is-loading');
+};
+
+/**
+ * Toggles checked class for the given button
+ * @param {HTMLElement} button
+ */
+const toggleValue = (button) => {
+  button.classList.toggle('is-checked');
+};
+
+/**
+ * Handles toggle buttons in the cluster's table.
+ *
+ * When the user clicks the toggle button for each cluster, it:
+ * - toggles the button
+ * - shows a loding and disabled state
+ * - Makes a put request to the given endpoint
+ * Once we receive the response, either:
+ * 1) Show updated status in case of successfull response
+ * 2) Show initial status in case of failed response
+ */
+export default function setClusterTableToggles() {
+  document.querySelectorAll('.js-toggle-cluster-list')
+    .forEach(button => button.addEventListener('click', (e) => {
+      const toggleButton = e.currentTarget;
+      const value = toggleButton.classList.contains('checked').toString();
+      const endpoint = toggleButton.getAttribute('data-endpoint');
+
+      toggleValue(toggleButton);
+      toggleLoadingButton(toggleButton);
+
+      ClustersService.updateCluster(endpoint, { cluster: { enabled: value } })
+        .then(() => {
+          toggleLoadingButton(toggleButton);
+        })
+        .catch(() => {
+          toggleLoadingButton(toggleButton);
+          toggleValue(toggleButton);
+          Flash(s__('ClusterIntegration|Something went wrong on our end.'));
+        });
+    }));
+}
diff --git a/app/assets/javascripts/clusters/services/clusters_service.js b/app/assets/javascripts/clusters/services/clusters_service.js
index ce14c9a9945..755c2981c2e 100644
--- a/app/assets/javascripts/clusters/services/clusters_service.js
+++ b/app/assets/javascripts/clusters/services/clusters_service.js
@@ -17,4 +17,8 @@ export default class ClusterService {
   installApplication(appId) {
     return axios.post(this.appInstallEndpointMap[appId]);
   }
+
+  static updateCluster(endpoint, data) {
+    return axios.put(endpoint, data);
+  }
 }
diff --git a/app/assets/javascripts/dispatcher.js b/app/assets/javascripts/dispatcher.js
index a21c92f24d6..7793140e608 100644
--- a/app/assets/javascripts/dispatcher.js
+++ b/app/assets/javascripts/dispatcher.js
@@ -558,7 +558,15 @@ import ProjectVariables from './project_variables';
           import(/* webpackChunkName: "clusters" */ './clusters/clusters_bundle')
             .then(cluster => new cluster.default()) // eslint-disable-line new-cap
             .catch((err) => {
-              Flash(s__('ClusterIntegration|Problem setting up the cluster JavaScript'));
+              Flash(s__('ClusterIntegration|Problem setting up the cluster'));
+              throw err;
+            });
+          break;
+        case 'projects:clusters:index':
+          import(/* webpackChunkName: "clusters_index" */ './clusters/clusters_index')
+            .then(clusterIndex => clusterIndex.default())
+            .catch((err) => {
+              Flash(s__('ClusterIntegration|Problem setting up the clusters list'));
               throw err;
             });
           break;
diff --git a/app/assets/javascripts/projects/permissions/components/project_feature_setting.vue b/app/assets/javascripts/projects/permissions/components/project_feature_setting.vue
index 80c5d39f736..8fce4c63872 100644
--- a/app/assets/javascripts/projects/permissions/components/project_feature_setting.vue
+++ b/app/assets/javascripts/projects/permissions/components/project_feature_setting.vue
@@ -1,5 +1,5 @@
 <script>
-import projectFeatureToggle from './project_feature_toggle.vue';
+import projectFeatureToggle from '../../../vue_shared/components/toggle_button.vue';
 
 export default {
   props: {
diff --git a/app/assets/javascripts/projects/permissions/components/project_feature_toggle.vue b/app/assets/javascripts/projects/permissions/components/project_feature_toggle.vue
deleted file mode 100644
index 2403c60186a..00000000000
--- a/app/assets/javascripts/projects/permissions/components/project_feature_toggle.vue
+++ /dev/null
@@ -1,51 +0,0 @@
-<script>
-export default {
-  props: {
-    name: {
-      type: String,
-      required: false,
-      default: '',
-    },
-    value: {
-      type: Boolean,
-      required: true,
-    },
-    disabledInput: {
-      type: Boolean,
-      required: false,
-      default: false,
-    },
-  },
-
-  model: {
-    prop: 'value',
-    event: 'change',
-  },
-
-  methods: {
-    toggleFeature() {
-      if (!this.disabledInput) this.$emit('change', !this.value);
-    },
-  },
-};
-</script>
-
-<template>
-  <label class="toggle-wrapper">
-    <input
-      v-if="name"
-      type="hidden"
-      :name="name"
-      :value="value"
-    />
-    <button
-      type="button"
-      aria-label="Toggle"
-      class="project-feature-toggle"
-      data-enabled-text="Enabled"
-      data-disabled-text="Disabled"
-      :class="{ checked: value, disabled: disabledInput }"
-      @click="toggleFeature"
-    />
-  </label>
-</template>
diff --git a/app/assets/javascripts/projects/permissions/components/settings_panel.vue b/app/assets/javascripts/projects/permissions/components/settings_panel.vue
index 326d9105666..639429baf26 100644
--- a/app/assets/javascripts/projects/permissions/components/settings_panel.vue
+++ b/app/assets/javascripts/projects/permissions/components/settings_panel.vue
@@ -1,6 +1,6 @@
 <script>
 import projectFeatureSetting from './project_feature_setting.vue';
-import projectFeatureToggle from './project_feature_toggle.vue';
+import projectFeatureToggle from '../../../vue_shared/components/toggle_button.vue';
 import projectSettingRow from './project_setting_row.vue';
 import { visibilityOptions, visibilityLevelDescriptions } from '../constants';
 import { toggleHiddenClassBySelector } from '../external';
diff --git a/app/assets/javascripts/vue_shared/components/toggle_button.vue b/app/assets/javascripts/vue_shared/components/toggle_button.vue
new file mode 100644
index 00000000000..ddc9ddbc3a3
--- /dev/null
+++ b/app/assets/javascripts/vue_shared/components/toggle_button.vue
@@ -0,0 +1,77 @@
+<script>
+  import loadingIcon from './loading_icon.vue';
+
+  export default {
+    props: {
+      name: {
+        type: String,
+        required: false,
+        default: '',
+      },
+      value: {
+        type: Boolean,
+        required: true,
+      },
+      disabledInput: {
+        type: Boolean,
+        required: false,
+        default: false,
+      },
+      isLoading: {
+        type: Boolean,
+        required: false,
+        default: false,
+      },
+      enabledText: {
+        type: String,
+        required: false,
+        default: 'Enabled',
+      },
+      disabledText: {
+        type: String,
+        required: false,
+        default: 'Disabled',
+      },
+    },
+
+    components: {
+      loadingIcon,
+    },
+
+    model: {
+      prop: 'value',
+      event: 'change',
+    },
+
+    methods: {
+      toggleFeature() {
+        if (!this.disabledInput) this.$emit('change', !this.value);
+      },
+    },
+  };
+</script>
+
+<template>
+  <label class="toggle-wrapper">
+    <input
+      type="hidden"
+      :name="name"
+      :value="value"
+    />
+    <button
+      type="button"
+      aria-label="Toggle"
+      class="project-feature-toggle"
+      :data-enabled-text="enabledText"
+      :data-disabled-text="disabledText"
+      :class="{
+        'is-checked': value,
+        'is-disabled': disabledInput,
+        'is-loading': isLoading
+      }"
+      @click="toggleFeature"
+    >
+      <loadingIcon class="loading-icon" />
+    </button>
+  </label>
+</template>
diff --git a/app/assets/stylesheets/framework.scss b/app/assets/stylesheets/framework.scss
index 66212be1b8f..43b16d3cf7d 100644
--- a/app/assets/stylesheets/framework.scss
+++ b/app/assets/stylesheets/framework.scss
@@ -44,6 +44,7 @@
 @import "framework/tabs";
 @import "framework/timeline";
 @import "framework/tooltips";
+@import "framework/toggle";
 @import "framework/typography";
 @import "framework/zen";
 @import "framework/blank";
diff --git a/app/assets/stylesheets/framework/toggle.scss b/app/assets/stylesheets/framework/toggle.scss
new file mode 100644
index 00000000000..71765da3908
--- /dev/null
+++ b/app/assets/stylesheets/framework/toggle.scss
@@ -0,0 +1,138 @@
+/**
+* Toggle button
+*
+* @usage
+*  ### Active and Inactive text should be provided as data attributes:
+*  <button type="button" class="project-feature-toggle" data-enabled-text="Enabled" data-disabled-text="Disabled">
+*  <i class="fa fa-spinner fa-spin loading-icon hidden"></i>
+*  </button>
+
+*  ### Checked should have `is-checked` class
+*  <button type="button" class="project-feature-toggle is-checked" data-enabled-text="Enabled" data-disabled-text="Disabled">
+*  <i class="fa fa-spinner fa-spin loading-icon hidden"></i>
+*  </button>
+
+*  ### Disabled should have `is-disabled` class
+*  <button type="button" class="project-feature-toggle is-disabled" data-enabled-text="Enabled" data-disabled-text="Disabled" disabled="true">
+*  <i class="fa fa-spinner fa-spin loading-icon hidden"></i>
+*  </button>
+
+*  ### Loading should have `is-loading` and an icon with `loading-icon` class
+*  <button type="button" class="project-feature-toggle is-loading" data-enabled-text="Enabled" data-disabled-text="Disabled">
+*  <i class="fa fa-spinner fa-spin loading-icon"></i>
+*  </button>
+*/
+.project-feature-toggle {
+  position: relative;
+  border: 0;
+  outline: 0;
+  display: block;
+  width: 100px;
+  height: 24px;
+  cursor: pointer;
+  user-select: none;
+  background: $feature-toggle-color-disabled;
+  border-radius: 12px;
+  padding: 3px;
+  transition: all .4s ease;
+
+  &::selection,
+  &::before::selection,
+  &::after::selection {
+    background: none;
+  }
+
+  &::before {
+    color: $feature-toggle-text-color;
+    font-size: 12px;
+    line-height: 24px;
+    position: absolute;
+    top: 0;
+    left: 25px;
+    right: 5px;
+    text-align: center;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    animation: animate-disabled .2s ease-in;
+    content: attr(data-disabled-text);
+  }
+
+  &::after {
+    position: relative;
+    display: block;
+    content: "";
+    width: 22px;
+    height: 18px;
+    left: 0;
+    border-radius: 9px;
+    background: $feature-toggle-color;
+    transition: all .2s ease;
+  }
+
+  .loading-icon {
+    display: none;
+    font-size: 12px;
+    color: $white-light;
+    position: absolute;
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+
+  }
+
+  &.is-loading {
+    &::before {
+      display: none;
+    }
+
+    .loading-icon {
+      display: block;
+
+      &::before {
+        position: absolute;
+        top: 50%;
+        left: 50%;
+        transform: translate(-50%, -50%);
+      }
+    }
+  }
+
+  &.is-checked {
+    background: $feature-toggle-color-enabled;
+
+    &::before {
+      left: 5px;
+      right: 25px;
+      animation: animate-enabled .2s ease-in;
+      content: attr(data-enabled-text);
+    }
+
+    &::after {
+      left: calc(100% - 22px);
+    }
+  }
+
+  &.is-disabled {
+    opacity: 0.4;
+    cursor: not-allowed;
+  }
+
+  @media (max-width: $screen-xs-min) {
+    width: 50px;
+
+    &::before,
+    &.is-checked::before {
+      display: none;
+    }
+  }
+
+  @keyframes animate-enabled {
+    0%, 35% { opacity: 0; }
+    100% { opacity: 1; }
+  }
+
+  @keyframes animate-disabled {
+    0%, 35% { opacity: 0; }
+    100% { opacity: 1; }
+  }
+}
diff --git a/app/assets/stylesheets/pages/clusters.scss b/app/assets/stylesheets/pages/clusters.scss
index 83e211d6086..b5ac6db04ad 100644
--- a/app/assets/stylesheets/pages/clusters.scss
+++ b/app/assets/stylesheets/pages/clusters.scss
@@ -14,3 +14,13 @@
 }
 
 @include new-style-dropdown('.clusters-dropdown ');
+
+.clusters-container {
+  .nav-bar-right {
+    padding: $gl-padding-top $gl-padding;
+  }
+
+  .empty-state .svg-content img {
+    width: 145px;
+  }
+}
diff --git a/app/assets/stylesheets/pages/projects.scss b/app/assets/stylesheets/pages/projects.scss
index 2dc0c288a6d..2856af37f8d 100644
--- a/app/assets/stylesheets/pages/projects.scss
+++ b/app/assets/stylesheets/pages/projects.scss
@@ -126,93 +126,6 @@
   }
 }
 
-.project-feature-toggle {
-  position: relative;
-  border: 0;
-  outline: 0;
-  display: block;
-  width: 100px;
-  height: 24px;
-  cursor: pointer;
-  user-select: none;
-  background: $feature-toggle-color-disabled;
-  border-radius: 12px;
-  padding: 3px;
-  transition: all .4s ease;
-
-  &::selection,
-  &::before::selection,
-  &::after::selection {
-    background: none;
-  }
-
-  &::before {
-    color: $feature-toggle-text-color;
-    font-size: 12px;
-    line-height: 24px;
-    position: absolute;
-    top: 0;
-    left: 25px;
-    right: 5px;
-    text-align: center;
-    overflow: hidden;
-    text-overflow: ellipsis;
-    animation: animate-disabled .2s ease-in;
-    content: attr(data-disabled-text);
-  }
-
-  &::after {
-    position: relative;
-    display: block;
-    content: "";
-    width: 22px;
-    height: 18px;
-    left: 0;
-    border-radius: 9px;
-    background: $feature-toggle-color;
-    transition: all .2s ease;
-  }
-
-  &.checked {
-    background: $feature-toggle-color-enabled;
-
-    &::before {
-      left: 5px;
-      right: 25px;
-      animation: animate-enabled .2s ease-in;
-      content: attr(data-enabled-text);
-    }
-
-    &::after {
-      left: calc(100% - 22px);
-    }
-  }
-
-  &.disabled {
-    opacity: 0.4;
-    cursor: not-allowed;
-  }
-
-  @media (max-width: $screen-xs-min) {
-    width: 50px;
-
-    &::before,
-    &.checked::before {
-      display: none;
-    }
-  }
-
-  @keyframes animate-enabled {
-    0%, 35% { opacity: 0; }
-    100% { opacity: 1; }
-  }
-
-  @keyframes animate-disabled {
-    0%, 35% { opacity: 0; }
-    100% { opacity: 1; }
-  }
-}
-
 .project-home-panel,
 .group-home-panel {
   padding-top: 24px;
diff --git a/app/controllers/projects/clusters_controller.rb b/app/controllers/projects/clusters_controller.rb
index 639874e6231..ae22243c0ee 100644
--- a/app/controllers/projects/clusters_controller.rb
+++ b/app/controllers/projects/clusters_controller.rb
@@ -8,11 +8,12 @@ class Projects::ClustersController < Projects::ApplicationController
   STATUS_POLLING_INTERVAL = 10_000
 
   def index
-    if project.cluster
-      redirect_to project_cluster_path(project, project.cluster)
-    else
-      redirect_to new_project_cluster_path(project)
-    end
+    @scope = params[:scope] || 'all'
+    clusters = ClustersFinder.new(project, current_user, @scope).execute
+    @clusters = clusters.page(params[:page])
+    @active_count = project.clusters.enabled.count
+    @inactive_count = project.clusters.disabled.count
+    @all_count = @active_count + @inactive_count
   end
 
   def new
@@ -39,10 +40,20 @@ class Projects::ClustersController < Projects::ApplicationController
       .execute(cluster)
 
     if cluster.valid?
-      flash[:notice] = "Cluster was successfully updated."
-      redirect_to project_cluster_path(project, project.cluster)
+      respond_to do |format|
+        format.json do
+          head :no_content
+        end
+        format.html do
+          flash[:notice] = "Cluster was successfully updated."
+          redirect_to project_cluster_path(project, project.cluster)
+        end
+      end
     else
-      render :show
+      respond_to do |format|
+        format.json { head :bad_request }
+        format.html { render :show }
+      end
     end
   end
 
@@ -59,7 +70,20 @@ class Projects::ClustersController < Projects::ApplicationController
   private
 
   def cluster
-    @cluster ||= project.clusters.find(params[:id]).present(current_user: current_user) || render_404
+    @cluster ||= project.clusters.find_by(id: params[:id])&.present(current_user: current_user) || render_404
+  end
+
+  def create_params
+    params.require(:cluster).permit(
+      :enabled,
+      :name,
+      :provider_type,
+      provider_gcp_attributes: [
+        :gcp_project_id,
+        :zone,
+        :num_nodes,
+        :machine_type
+      ])
   end
 
   def update_params
diff --git a/app/finders/clusters_finder.rb b/app/finders/clusters_finder.rb
new file mode 100644
index 00000000000..c13f98257bf
--- /dev/null
+++ b/app/finders/clusters_finder.rb
@@ -0,0 +1,29 @@
+class ClustersFinder
+  def initialize(project, user, scope)
+    @project = project
+    @user = user
+    @scope = scope || :active
+  end
+
+  def execute
+    clusters = project.clusters
+    filter_by_scope(clusters)
+  end
+
+  private
+
+  attr_reader :project, :user, :scope
+
+  def filter_by_scope(clusters)
+    case scope.to_sym
+    when :all
+      clusters
+    when :inactive
+      clusters.disabled
+    when :active
+      clusters.enabled
+    else
+      raise "Invalid scope #{scope}"
+    end
+  end
+end
diff --git a/app/helpers/clusters_helper.rb b/app/helpers/clusters_helper.rb
new file mode 100644
index 00000000000..f8281c893fa
--- /dev/null
+++ b/app/helpers/clusters_helper.rb
@@ -0,0 +1,5 @@
+module ClustersHelper
+  def can_toggle_cluster?(cluster)
+    can?(current_user, :update_cluster, cluster) && cluster.created?
+  end
+end
diff --git a/app/models/clusters/cluster.rb b/app/models/clusters/cluster.rb
index 441cbcb701d..c97a6fdc78a 100644
--- a/app/models/clusters/cluster.rb
+++ b/app/models/clusters/cluster.rb
@@ -55,6 +55,10 @@ module Clusters
       end
     end
 
+    def created?
+      status_name == :created
+    end
+
     def applications
       [
         application_helm || build_application_helm,
diff --git a/app/services/clusters/create_service.rb b/app/services/clusters/create_service.rb
index 1d407739b21..a47ce5a8887 100644
--- a/app/services/clusters/create_service.rb
+++ b/app/services/clusters/create_service.rb
@@ -5,6 +5,8 @@ module Clusters
     def execute(access_token)
       @access_token = access_token
 
+      raise Exception.new('Instance does not support multiple clusters') unless can_create_cluster?
+
       create_cluster.tap do |cluster|
         ClusterProvisionWorker.perform_async(cluster.id) if cluster.persisted?
       end
@@ -25,5 +27,9 @@ module Clusters
 
       @cluster_params = params.merge(user: current_user, projects: [project])
     end
+
+    def can_create_cluster?
+      return project.clusters.empty?
+    end
   end
 end
diff --git a/app/views/layouts/nav/sidebar/_project.html.haml b/app/views/layouts/nav/sidebar/_project.html.haml
index 8b2d2a5c74d..53a9162b703 100644
--- a/app/views/layouts/nav/sidebar/_project.html.haml
+++ b/app/views/layouts/nav/sidebar/_project.html.haml
@@ -187,7 +187,7 @@
               = nav_link(controller: [:clusters, :user, :gcp]) do
                 = link_to project_clusters_path(@project), title: 'Cluster', class: 'shortcuts-cluster' do
                   %span
-                    Cluster
+                    Clusters
 
             - if @project.feature_available?(:builds, current_user) && !@project.empty_repo?
               = nav_link(path: 'pipelines#charts') do
diff --git a/app/views/projects/clusters/_cluster.html.haml b/app/views/projects/clusters/_cluster.html.haml
new file mode 100644
index 00000000000..ba36828d407
--- /dev/null
+++ b/app/views/projects/clusters/_cluster.html.haml
@@ -0,0 +1,22 @@
+.gl-responsive-table-row
+  .table-section.section-30
+    .table-mobile-header{ role: "rowheader" }= s_("ClusterIntegration|Cluster")
+    .table-mobile-content
+      = link_to cluster.name, namespace_project_cluster_path(@project.namespace, @project, cluster)
+  .table-section.section-30
+    .table-mobile-header{ role: "rowheader" }= s_("ClusterIntegration|Environment pattern")
+    .table-mobile-content= cluster.environment_scope
+  .table-section.section-30
+    .table-mobile-header{ role: "rowheader" }= s_("ClusterIntegration|Project namespace")
+    .table-mobile-content= cluster.platform_kubernetes&.namespace
+  .table-section.section-10
+    .table-mobile-header{ role: "rowheader" }
+    .table-mobile-content
+      %button{ type: "button",
+        class: "js-toggle-cluster-list project-feature-toggle #{'is-checked' if cluster.enabled?} #{'is-disabled' if !can_toggle_cluster?(cluster)}",
+        "aria-label": s_("ClusterIntegration|Toggle Cluster"),
+        disabled: !can_toggle_cluster?(cluster),
+        data: { "enabled-text": s_("ClusterIntegration|Active"),
+          "disabled-text": s_("ClusterIntegration|Inactive"),
+          endpoint: namespace_project_cluster_path(@project.namespace, @project, cluster, format: :json) } }
+        = icon("spinner spin", class: "loading-icon")
diff --git a/app/views/projects/clusters/_empty_state.html.haml b/app/views/projects/clusters/_empty_state.html.haml
new file mode 100644
index 00000000000..e629cc58b06
--- /dev/null
+++ b/app/views/projects/clusters/_empty_state.html.haml
@@ -0,0 +1,12 @@
+.row.empty-state
+  .col-xs-12
+    .svg-content= image_tag 'illustrations/clusters_empty.svg'
+  .col-xs-12.text-center
+    .text-content
+      %h4= s_('ClusterIntegration|Integrate cluster automation')
+      - link_to_help_page = link_to(s_('ClusterIntegration|Learn more about Clusters'), help_page_path('user/project/clusters/index'), target: '_blank', rel: 'noopener noreferrer')
+      %p= s_('ClusterIntegration|Clusters allow you to use review apps, deploy your applications, run your pipelines, and much more in an easy way. %{link_to_help_page}').html_safe % { link_to_help_page: link_to_help_page}
+
+      %p
+        = link_to s_('ClusterIntegration|Add cluster'), new_project_cluster_path(@project), class: 'btn btn-success'
+
diff --git a/app/views/projects/clusters/_tabs.html.haml b/app/views/projects/clusters/_tabs.html.haml
new file mode 100644
index 00000000000..955a9940727
--- /dev/null
+++ b/app/views/projects/clusters/_tabs.html.haml
@@ -0,0 +1,18 @@
+.top-area.scrolling-tabs-container.inner-page-scroll-tabs
+  .fade-left= icon("angle-left")
+  .fade-right= icon("angle-right")
+  %ul.nav-links.scrolling-tabs
+    %li{ class: ('active' if @scope == 'active') }>
+      = link_to project_clusters_path(@project, scope: :active), class: "js-active-tab" do
+        = s_("ClusterIntegration|Active")
+        %span.badge= @active_count
+    %li{ class: ('active' if @scope == 'inactive') }>
+      = link_to project_clusters_path(@project, scope: :inactive), class: "js-inactive-tab" do
+        = s_("ClusterIntegration|Inactive")
+        %span.badge= @inactive_count
+    %li{ class: ('active' if @scope.nil? || @scope == 'all') }>
+      = link_to project_clusters_path(@project), class: "js-all-tab" do
+        = s_("ClusterIntegration|All")
+        %span.badge= @all_count
+  .pull-right.nav-bar-right
+    = link_to s_("ClusterIntegration|Add cluster"), new_project_cluster_path(@project), class: "btn btn-success disabled has-tooltip js-add-cluster", title: s_("ClusterIntegration|Multiple clusters are available in GitLab Entreprise Edition Premium and Ultimate")
diff --git a/app/views/projects/clusters/index.html.haml b/app/views/projects/clusters/index.html.haml
new file mode 100644
index 00000000000..4dd956971ae
--- /dev/null
+++ b/app/views/projects/clusters/index.html.haml
@@ -0,0 +1,24 @@
+- breadcrumb_title "Clusters"
+- page_title "Clusters"
+
+.clusters-container
+  - if !@clusters.empty?
+    = render "tabs"
+    .ci-table.js-clusters-list
+      .gl-responsive-table-row.table-row-header{ role: "row" }
+        .table-section.section-30{ role: "rowheader" }
+          = s_("ClusterIntegration|Cluster")
+        .table-section.section-30{ role: "rowheader" }
+          = s_("ClusterIntegration|Environment pattern")
+        .table-section.section-30{ role: "rowheader" }
+          = s_("ClusterIntegration|Project namespace")
+        .table-section.section-10{ role: "rowheader" }
+      - @clusters.each do |cluster|
+        = render "cluster", cluster: cluster
+    = paginate @clusters, theme: "gitlab"
+  - elsif @scope == 'all'
+    = render "empty_state"
+  - else
+    = render "tabs"
+    .prepend-top-20.text-center
+      = s_("ClusterIntegration|There are no clusters to show")
diff --git a/app/views/projects/clusters/show.html.haml b/app/views/projects/clusters/show.html.haml
index d23efe4d9aa..c177e675b3c 100644
--- a/app/views/projects/clusters/show.html.haml
+++ b/app/views/projects/clusters/show.html.haml
@@ -1,5 +1,6 @@
 - @content_class = "limit-container-width" unless fluid_layout
-- breadcrumb_title "Cluster"
+- add_to_breadcrumbs "Clusters", project_clusters_path(@project)
+- breadcrumb_title @cluster.id
 - page_title _("Cluster")
 
 - expanded = Rails.env.test?