feat(cluster): Show the cluster health by showing the status of the underlying cluster components (#4022)

* feat(cluster): add tabs

* feat(cluster): add cluster status informations to cluster detail view

* feat(cluster): change data display

* feat(cluster): prevent regular users to see cluster health

* feat(kubernetes): reviewed ComponentStatus handling

* refactor(kubernetes): review apiToModel for KubernetesComponentStatus

* refactor(kubernetes): remove unused variable

* refactor(kubernetes): clean hasUnhealthyComponentStatus code

Co-authored-by: Anthony Lapenna <lapenna.anthony@gmail.com>

app/kubernetes/component-status/converter.js

@@ -0,0 +1,21 @@
+import _ from 'lodash-es';
+import { KubernetesComponentStatus } from './models';
+
+export class KubernetesComponentStatusConverter {
+  /**
+   * Convert API data to KubernetesComponentStatus model
+   */
+  static apiToModel(data) {
+    const res = new KubernetesComponentStatus();
+    res.ComponentName = data.metadata.name;
+
+    const healthyCondition = _.find(data.conditions, { type: 'Healthy' });
+    if (healthyCondition && healthyCondition.status === 'True') {
+      res.Healthy = true;
+    } else if (healthyCondition && healthyCondition.status === 'False') {
+      res.ErrorMessage = healthyCondition.message;
+    }
+
+    return res;
+  }
+}

app/kubernetes/component-status/models.js

@@ -0,0 +1,14 @@
+/**
+ * KubernetesComponentStatus Model
+ */
+const _KubernetesComponentStatus = Object.freeze({
+  ComponentName: '',
+  Healthy: false,
+  ErrorMessage: '',
+});
+
+export class KubernetesComponentStatus {
+  constructor() {
+    Object.assign(this, JSON.parse(JSON.stringify(_KubernetesComponentStatus)));
+  }
+}

app/kubernetes/component-status/rest.js

@@ -0,0 +1,24 @@
+angular.module('portainer.kubernetes').factory('KubernetesComponentStatus', [
+  '$resource',
+  'API_ENDPOINT_ENDPOINTS',
+  'EndpointProvider',
+  function KubernetesComponentStatusFactory($resource, API_ENDPOINT_ENDPOINTS, EndpointProvider) {
+    'use strict';
+    return function () {
+      const url = API_ENDPOINT_ENDPOINTS + '/:endpointId/kubernetes/api/v1' + '/componentstatuses/:id';
+      return $resource(
+        url,
+        {
+          endpointId: EndpointProvider.endpointID,
+        },
+        {
+          get: {
+            method: 'GET',
+            timeout: 15000,
+            ignoreLoadingBar: true,
+          },
+        }
+      );
+    };
+  },
+]);

app/kubernetes/component-status/service.js

@@ -0,0 +1,34 @@
+import angular from 'angular';
+import PortainerError from 'Portainer/error';
+import _ from 'lodash-es';
+import { KubernetesComponentStatusConverter } from './converter';
+
+class KubernetesComponentStatusService {
+  /* @ngInject */
+  constructor($async, KubernetesComponentStatus) {
+    this.$async = $async;
+    this.KubernetesComponentStatus = KubernetesComponentStatus;
+
+    this.getAsync = this.getAsync.bind(this);
+  }
+
+  /**
+   * GET
+   */
+  async getAsync() {
+    try {
+      const data = await this.KubernetesComponentStatus().get().$promise;
+      const res = _.map(data.items, (item) => KubernetesComponentStatusConverter.apiToModel(item));
+      return res;
+    } catch (err) {
+      throw new PortainerError('Unable to retrieve cluster status', err);
+    }
+  }
+
+  get() {
+    return this.$async(this.getAsync);
+  }
+}
+
+export default KubernetesComponentStatusService;
+angular.module('portainer.kubernetes').service('KubernetesComponentStatusService', KubernetesComponentStatusService);