Agent Activity Information - Frontend

app/assets/javascripts/clusters/agents/components/activity_events_list.vue

+<script>
+import { GlLoadingIcon, GlEmptyState, GlLink, GlIcon, GlAlert } from '@gitlab/ui';
+import { helpPagePath } from '~/helpers/help_page_helper';
+import { n__, s__, __ } from '~/locale';
+import { formatDate, getDayDifference, isToday } from '~/lib/utils/datetime_utility';
+import { EVENTS_STORED_DAYS } from '../constants';
+import getAgentActivityEventsQuery from '../graphql/queries/get_agent_activity_events.query.graphql';
+import ActivityHistoryItem from './activity_history_item.vue';
+
+export default {
+  components: {
+    GlLoadingIcon,
+    GlEmptyState,
+    GlAlert,
+    GlLink,
+    GlIcon,
+    ActivityHistoryItem,
+  },
+  i18n: {
+    emptyText: s__(
+      'ClusterAgents|See Agent activity updates such as tokens created or revoked and clusters connected or not connected.',
+    ),
+    error: s__(
+      'ClusterAgents|An error occurred while retrieving GitLab Agent activity. Reload the page to try again.',
+    ),
+    today: __('Today'),
+    yesterday: __('Yesterday'),
+  },
+  emptyHelpLink: helpPagePath('user/clusters/agent/install/index', {
+    anchor: 'view-agent-activity',
+  }),
+  borderClasses: 'gl-border-b-1 gl-border-b-solid gl-border-b-gray-100',
+  apollo: {
+    agentEvents: {
+      query: getAgentActivityEventsQuery,
+      variables() {
+        return {
+          agentName: this.agentName,
+          projectPath: this.projectPath,
+        };
+      },
+      update: (data) => data?.project?.clusterAgent?.activityEvents?.nodes,
+      error() {
+        this.isError = true;
+      },
+    },
+  },
+  inject: ['agentName', 'projectPath', 'activityEmptyStateImage'],
+  data() {
+    return {
+      isError: false,
+    };
+  },
+  computed: {
+    isLoading() {
+      return this.$apollo.queries.agentEvents?.loading;
+    },
+    emptyStateTitle() {
+      return n__(
+        "ClusterAgents|There's no activity from the past day",
+        "ClusterAgents|There's no activity from the past %d days",
+        EVENTS_STORED_DAYS,
+      );
+    },
+    eventsList() {
+      const list = this.agentEvents;
+      const listByDates = {};
+
+      if (!list?.length) {
+        return listByDates;
+      }
+
+      list.forEach((event) => {
+        const dateName = this.getFormattedDate(event.recordedAt);
+        if (!listByDates[dateName]) {
+          listByDates[dateName] = [];
+        }
+        listByDates[dateName].push(event);
+      });
+
+      return listByDates;
+    },
+    hasEvents() {
+      return Object.keys(this.eventsList).length;
+    },
+  },
+  methods: {
+    isYesterday(date) {
+      const today = new Date();
+      return getDayDifference(today, date) === -1;
+    },
+    getFormattedDate(dateString) {
+      const date = new Date(dateString);
+      let dateName;
+      if (isToday(date)) {
+        dateName = this.$options.i18n.today;
+      } else if (this.isYesterday(date)) {
+        dateName = this.$options.i18n.yesterday;
+      } else {
+        dateName = formatDate(date, 'yyyy-mm-dd');
+      }
+      return dateName;
+    },
+    isLast(dateEvents, idx) {
+      return idx === dateEvents.length - 1;
+    },
+    getBodyClasses(dateEvents, idx) {
+      return !this.isLast(dateEvents, idx) ? this.$options.borderClasses : '';
+    },
+  },
+};
+</script>
+
+<template>
+  <div>
+    <gl-loading-icon v-if="isLoading" size="md" />
+
+    <div v-else-if="hasEvents">
+      <div
+        v-for="(dateEvents, key) in eventsList"
+        :key="key"
+        class="agent-activity-list issuable-discussion"
+      >
+        <h4
+          class="gl-pb-4 gl-ml-5"
+          :class="$options.borderClasses"
+          data-testid="activity-section-title"
+        >
+          {{ key }}
+        </h4>
+
+        <ul class="notes main-notes-list timeline">
+          <activity-history-item
+            v-for="(event, idx) in dateEvents"
+            :key="idx"
+            :event="event"
+            :body-class="getBodyClasses(dateEvents, idx)"
+          />
+        </ul>
+      </div>
+    </div>
+
+    <gl-alert v-else-if="isError" variant="danger" :dismissible="false" class="gl-mt-3">
+      {{ $options.i18n.error }}
+    </gl-alert>
+
+    <gl-empty-state
+      v-else
+      :title="emptyStateTitle"
+      :svg-path="activityEmptyStateImage"
+      :svg-height="150"
+    >
+      <template #description>
+        <div>
+          <span>{{ $options.i18n.emptyText }}</span>
+
+          <gl-link :href="$options.emptyHelpLink"><gl-icon name="question" :size="14" /></gl-link>
+        </div>
+      </template>
+    </gl-empty-state>
+  </div>
+</template>

app/assets/javascripts/clusters/agents/components/activity_history_item.vue

+<script>
+import { GlLink, GlIcon, GlSprintf } from '@gitlab/ui';
+import { s__ } from '~/locale';
+import TimeAgoTooltip from '~/vue_shared/components/time_ago_tooltip.vue';
+import HistoryItem from '~/vue_shared/components/registry/history_item.vue';
+import { EVENT_DETAILS, DEFAULT_ICON } from '../constants';
+
+export default {
+  i18n: {
+    defaultBodyText: s__('ClusterAgents|Event occurred'),
+  },
+  components: {
+    GlLink,
+    GlIcon,
+    GlSprintf,
+    TimeAgoTooltip,
+    HistoryItem,
+  },
+  props: {
+    event: {
+      required: true,
+      type: Object,
+    },
+    bodyClass: {
+      required: false,
+      default: '',
+      type: String,
+    },
+  },
+  computed: {
+    eventDetails() {
+      const defaultEvent = {
+        eventTypeIcon: DEFAULT_ICON,
+        title: this.event.kind,
+        body: this.$options.i18n.defaultBodyText,
+      };
+
+      const eventDetails = EVENT_DETAILS[this.event.kind] || defaultEvent;
+      const { eventTypeIcon, title, body, titleIcon } = eventDetails;
+      const resultEvent = { ...this.event, eventTypeIcon, title, body, titleIcon };
+
+      return resultEvent;
+    },
+  },
+};
+</script>
+<template>
+  <history-item :icon="eventDetails.eventTypeIcon" class="gl-my-0! gl-pr-0!">
+    <strong>
+      <gl-sprintf :message="eventDetails.title"
+        ><template v-if="eventDetails.titleIcon" #titleIcon
+          ><gl-icon
+            class="gl-mr-2"
+            :name="eventDetails.titleIcon.name"
+            :size="12"
+            :class="eventDetails.titleIcon.class"
+          />
+        </template>
+        <template #tokenName>{{ eventDetails.agentToken.name }}</template></gl-sprintf
+      >
+    </strong>
+
+    <template #body>
+      <p class="gl-mt-2 gl-mb-0 gl-pb-2" :class="bodyClass">
+        <gl-sprintf :message="eventDetails.body">
+          <template #userName>
+            <strong>{{ eventDetails.user.name }}</strong>
+            <gl-link :href="eventDetails.user.webUrl">@{{ eventDetails.user.username }}</gl-link>
+          </template>
+
+          <template #strong="{ content }">
+            <strong> {{ content }} </strong>
+          </template>
+        </gl-sprintf>
+        <time-ago-tooltip :time="eventDetails.recordedAt" />
+      </p>
+    </template>
+  </history-item>
+</template>

app/assets/javascripts/clusters/agents/components/show.vue

@@ -8,11 +8,12 @@ import {
   GlTab,
   GlTabs,
 } from '@gitlab/ui';
-import { s__ } from '~/locale';
+import { s__, __ } from '~/locale';
 import TimeAgoTooltip from '~/vue_shared/components/time_ago_tooltip.vue';
 import { MAX_LIST_COUNT } from '../constants';
 import getClusterAgentQuery from '../graphql/queries/get_cluster_agent.query.graphql';
 import TokenTable from './token_table.vue';
+import ActivityEvents from './activity_events_list.vue';
 
 export default {
   i18n: {
@@ -20,6 +21,7 @@ export default {
     loadingError: s__('ClusterAgents|An error occurred while loading your agent'),
     tokens: s__('ClusterAgents|Access tokens'),
     unknownUser: s__('ClusterAgents|Unknown user'),
+    activity: __('Activity'),
   },
   apollo: {
     clusterAgent: {
@@ -47,6 +49,7 @@ export default {
     GlTabs,
     TimeAgoTooltip,
     TokenTable,
+    ActivityEvents,
   },
   props: {
     agentName: {
@@ -127,9 +130,14 @@ export default {
         </gl-sprintf>
       </p>
 
-      <gl-tabs>
+      <gl-tabs sync-active-tab-with-query-params lazy>
+        <gl-tab :title="$options.i18n.activity" query-param-value="activity">
+          <activity-events :agent-name="agentName" :project-path="projectPath" />
+        </gl-tab>
+
         <slot name="ee-security-tab"></slot>
-        <gl-tab>
+
+        <gl-tab query-param-value="tokens">
           <template #title>
             <span data-testid="cluster-agent-token-count">
               {{ $options.i18n.tokens }}
@@ -143,7 +151,7 @@ export default {
           <gl-loading-icon v-if="isLoading" size="md" class="gl-m-3" />
 
           <div v-else>
-            <TokenTable :tokens="tokens" />
+            <token-table :tokens="tokens" />
 
             <div v-if="showPagination" class="gl-display-flex gl-justify-content-center gl-mt-5">
               <gl-keyset-pagination v-bind="tokenPageInfo" @prev="prevPage" @next="nextPage" />

app/assets/javascripts/clusters/agents/components/token_table.vue

@@ -83,7 +83,14 @@ export default {
       </gl-link>
     </div>
 
-    <gl-table :items="tokens" :fields="fields" fixed stacked="md">
+    <gl-table
+      :items="tokens"
+      :fields="fields"
+      fixed
+      stacked="md"
+      head-variant="white"
+      thead-class="gl-border-b-solid gl-border-b-2 gl-border-b-gray-100"
+    >
       <template #cell(lastUsed)="{ item }">
         <time-ago-tooltip v-if="item.lastUsedAt" :time="item.lastUsedAt" />
         <span v-else>{{ $options.i18n.neverUsed }}</span>

app/assets/javascripts/clusters/agents/constants.js

+import { s__ } from '~/locale';
+
 export const MAX_LIST_COUNT = 25;
+
+export const EVENTS_STORED_DAYS = 7;
+
+export const EVENT_DETAILS = {
+  token_created: {
+    eventTypeIcon: 'token',
+    title: s__('ClusterAgents|%{tokenName} created'),
+    body: s__('ClusterAgents|Token created by %{userName}'),
+  },
+  token_revoked: {
+    eventTypeIcon: 'token',
+    title: s__('ClusterAgents|%{tokenName} revoked'),
+    body: s__('ClusterAgents|Token revoked by %{userName}'),
+  },
+  agent_connected: {
+    eventTypeIcon: 'connected',
+    title: s__('ClusterAgents|%{titleIcon}Connected'),
+    body: s__('ClusterAgents|Agent %{strongStart}connected%{strongEnd}'),
+    titleIcon: {
+      name: 'status-success',
+      class: 'text-success-500',
+    },
+  },
+  agent_disconnected: {
+    eventTypeIcon: 'connected',
+    title: s__('ClusterAgents|%{titleIcon}Not connected'),
+    body: s__('ClusterAgents|Agent %{strongStart}disconnected%{strongEnd}'),
+    titleIcon: {
+      name: 'severity-critical',
+      class: 'text-danger-800',
+    },
+  },
+};
+
+export const DEFAULT_ICON = 'token';

app/assets/javascripts/clusters/agents/graphql/queries/get_agent_activity_events.query.graphql

+query getAgentActivityEvents($projectPath: ID!, $agentName: String!) {
+  project(fullPath: $projectPath) {
+    id
+    clusterAgent(name: $agentName) {
+      id
+      activityEvents {
+        nodes {
+          kind
+          level
+          recordedAt
+          agentToken {
+            id
+            name
+          }
+          user {
+            id
+            name
+            username
+            webUrl
+          }
+        }
+      }
+    }
+  }
+}

app/assets/javascripts/clusters/agents/index.js

@@ -13,11 +13,12 @@ export default () => {
   }
 
   const defaultClient = createDefaultClient();
-  const { agentName, projectPath } = el.dataset;
+  const { agentName, projectPath, activityEmptyStateImage } = el.dataset;
 
   return new Vue({
     el,
     apolloProvider: new VueApollo({ defaultClient }),
+    provide: { agentName, projectPath, activityEmptyStateImage },
     render(createElement) {
       return createElement(AgentShowPage, {
         props: {

app/assets/stylesheets/pages/clusters.scss

@@ -26,3 +26,15 @@
     }
   }
 }
+
+.agent-activity-list {
+  .system-note .timeline-entry-inner {
+    .timeline-icon {
+      @include gl-mt-1;
+    }
+  }
+
+  &.issuable-discussion .main-notes-list::before {
+    @include gl-top-3;
+  }
+}

app/helpers/projects/cluster_agents_helper.rb

@@ -4,7 +4,8 @@ module Projects::ClusterAgentsHelper
   def js_cluster_agent_details_data(agent_name, project)
     {
       agent_name: agent_name,
-      project_path: project.full_path
+      project_path: project.full_path,
+      activity_empty_state_image: image_path('illustrations/empty-state/empty-state-agents.svg')
     }
   end
 end

doc/user/clusters/agent/install/index.md

@@ -354,6 +354,32 @@ and the configuration directory for each agent:
 Additional management interfaces are planned for the GitLab Agent.
 [Provide more feedback in the related epic](https://gitlab.com/groups/gitlab-org/-/epics/4739).
 
+## View Agent activity information
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/277323) in GitLab 14.6.
+
+Users with at least the [Developer](../../../permissions.md) can view the Agent's activity events.
+The activity logs help you to identify problems and get the information you need for troubleshooting.
+You can see events from a week before the current date.
+To access an agent's activity:
+
+1. Go to your agent's configuration repository.
+1. From the sidebar, select **Infrastructure > Kubernetes clusters**.
+1. Select the **Agent** tab.
+1. Select the agent you want to see the activity.
+
+You can see the following events on the activity list:
+
+- Agent registration:
+  - When a new token is **created**.
+- Connection events:
+  - When an agent is successfully **connected** to a cluster.
+
+Note that the connection status is logged when you connect an agent for the first time
+or after more than an hour of inactivity.
+
+![GitLab Agent activity events UI](../../img/gitlab_agent_activity_events_v14_6.png)
+
 ## Upgrades and version compatibility
 
 The Agent is comprised of two major components: `agentk` and `kas`.

locale/gitlab.pot

@@ -7452,6 +7452,18 @@ msgstr ""
 msgid "ClusterAgents|%{number} of %{total} clusters connected through cluster certificates"
 msgstr ""
 
+msgid "ClusterAgents|%{titleIcon}Connected"
+msgstr ""
+
+msgid "ClusterAgents|%{titleIcon}Not connected"
+msgstr ""
+
+msgid "ClusterAgents|%{tokenName} created"
+msgstr ""
+
+msgid "ClusterAgents|%{tokenName} revoked"
+msgstr ""
+
 msgid "ClusterAgents|Access tokens"
 msgstr ""
 
@@ -7464,6 +7476,12 @@ msgstr ""
 msgid "ClusterAgents|Agent"
 msgstr ""
 
+msgid "ClusterAgents|Agent %{strongStart}connected%{strongEnd}"
+msgstr ""
+
+msgid "ClusterAgents|Agent %{strongStart}disconnected%{strongEnd}"
+msgstr ""
+
 msgid "ClusterAgents|Agent might not be connected to GitLab"
 msgstr ""
 
@@ -7479,6 +7497,9 @@ msgstr ""
 msgid "ClusterAgents|An error occurred while loading your agent"
 msgstr ""
 
+msgid "ClusterAgents|An error occurred while retrieving GitLab Agent activity. Reload the page to try again."
+msgstr ""
+
 msgid "ClusterAgents|An unknown error occurred. Please try again."
 msgstr ""
 
@@ -7533,6 +7554,9 @@ msgstr ""
 msgid "ClusterAgents|Description"
 msgstr ""
 
+msgid "ClusterAgents|Event occurred"
+msgstr ""
+
 msgid "ClusterAgents|Failed to register an agent"
 msgstr ""
 
@@ -7608,6 +7632,9 @@ msgstr ""
 msgid "ClusterAgents|Security"
 msgstr ""
 
+msgid "ClusterAgents|See Agent activity updates such as tokens created or revoked and clusters connected or not connected."
+msgstr ""
+
 msgid "ClusterAgents|Select an agent"
 msgstr ""
 
@@ -7626,12 +7653,23 @@ msgstr ""
 msgid "ClusterAgents|The registration token will be used to connect the agent on your cluster to GitLab. %{linkStart}What are registration tokens?%{linkEnd}"
 msgstr ""
 
+msgid "ClusterAgents|There's no activity from the past day"
+msgid_plural "ClusterAgents|There's no activity from the past %d days"
+msgstr[0] ""
+msgstr[1] ""
+
 msgid "ClusterAgents|This agent has no tokens"
 msgstr ""
 
 msgid "ClusterAgents|To install a new agent, first add the agent's configuration file to this repository. %{linkStart}What's the agent's configuration file?%{linkEnd}"
 msgstr ""
 
+msgid "ClusterAgents|Token created by %{userName}"
+msgstr ""
+
+msgid "ClusterAgents|Token revoked by %{userName}"
+msgstr ""
+
 msgid "ClusterAgents|Unknown user"
 msgstr ""
 

spec/features/projects/cluster_agents_spec.rb

@@ -44,8 +44,17 @@ RSpec.describe 'ClusterAgents', :js do
         visit project_cluster_agent_path(project, agent.name)
       end
 
-      it 'displays agent and token information', :aggregate_failures do
+      it 'displays agent information', :aggregate_failures do
         expect(page).to have_content(agent.name)
+      end
+
+      it 'displays agent activity tab', :aggregate_failures do
+        expect(page).to have_content('Activity')
+      end
+
+      it 'displays agent tokens tab', :aggregate_failures do
+        expect(page).to have_content('Access tokens')
+        click_link 'Access tokens'
         expect(page).to have_content(token.description)
       end
     end

spec/frontend/clusters/agents/components/activity_events_list_spec.js

+import { GlLoadingIcon, GlAlert, GlEmptyState } from '@gitlab/ui';
+import Vue from 'vue';
+import VueApollo from 'vue-apollo';
+import { shallowMountExtended } from 'helpers/vue_test_utils_helper';
+import { useFakeDate } from 'helpers/fake_date';
+import createMockApollo from 'helpers/mock_apollo_helper';
+import waitForPromises from 'helpers/wait_for_promises';
+import ActivityEvents from '~/clusters/agents/components/activity_events_list.vue';
+import ActivityHistoryItem from '~/clusters/agents/components/activity_history_item.vue';
+import getAgentActivityEventsQuery from '~/clusters/agents/graphql/queries/get_agent_activity_events.query.graphql';
+import { mockResponse, mockEmptyResponse } from '../../mock_data';
+
+const activityEmptyStateImage = '/path/to/image';
+const projectPath = 'path/to/project';
+const agentName = 'cluster-agent';
+
+Vue.use(VueApollo);
+
+describe('ActivityEvents', () => {
+  let wrapper;
+  useFakeDate([2021, 12, 3]);
+
+  const provideData = {
+    agentName,
+    projectPath,
+    activityEmptyStateImage,
+  };
+
+  const createWrapper = ({ queryResponse = null } = {}) => {
+    const agentEventsQueryResponse = queryResponse || jest.fn().mockResolvedValue(mockResponse);
+    const apolloProvider = createMockApollo([
+      [getAgentActivityEventsQuery, agentEventsQueryResponse],
+    ]);
+
+    wrapper = shallowMountExtended(ActivityEvents, {
+      apolloProvider,
+      provide: provideData,
+    });
+  };
+
+  const findLoadingIcon = () => wrapper.findComponent(GlLoadingIcon);
+  const findAlert = () => wrapper.findComponent(GlAlert);
+  const findEmptyState = () => wrapper.findComponent(GlEmptyState);
+  const findAllActivityHistoryItems = () => wrapper.findAllComponents(ActivityHistoryItem);
+  const findSectionTitle = (at) => wrapper.findAllByTestId('activity-section-title').at(at);
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  describe('while the agentEvents query is loading', () => {
+    it('displays a loading icon', async () => {
+      createWrapper();
+
+      expect(findLoadingIcon().exists()).toBe(true);
+      await waitForPromises();
+      expect(findLoadingIcon().exists()).toBe(false);
+    });
+  });
+
+  describe('when the agentEvents query has errored', () => {
+    beforeEach(() => {
+      createWrapper({ queryResponse: jest.fn().mockRejectedValue() });
+      return waitForPromises();
+    });
+
+    it('displays an alert message', () => {
+      expect(findAlert().exists()).toBe(true);
+    });
+  });
+
+  describe('when there are no agentEvents', () => {
+    beforeEach(() => {
+      createWrapper({ queryResponse: jest.fn().mockResolvedValue(mockEmptyResponse) });
+    });
+
+    it('displays an empty state with the correct illustration', () => {
+      expect(findEmptyState().exists()).toBe(true);
+      expect(findEmptyState().props('svgPath')).toBe(activityEmptyStateImage);
+    });
+  });
+
+  describe('when the agentEvents are present', () => {
+    const length = mockResponse.data?.project?.clusterAgent?.activityEvents?.nodes?.length;
+
+    beforeEach(() => {
+      createWrapper();
+    });
+    it('renders an activity-history-item components for every event', () => {
+      expect(findAllActivityHistoryItems()).toHaveLength(length);
+    });
+
+    it.each`
+      recordedAt                | date            | lineNumber
+      ${'2021-12-03T01:06:56Z'} | ${'Today'}      | ${0}
+      ${'2021-12-02T19:26:56Z'} | ${'Yesterday'}  | ${1}
+      ${'2021-11-22T19:26:56Z'} | ${'2021-11-22'} | ${2}
+    `('renders correct titles for different days', ({ date, lineNumber }) => {
+      expect(findSectionTitle(lineNumber).text()).toBe(date);
+    });
+  });
+});

spec/frontend/clusters/agents/components/activity_history_item_spec.js

+import { GlSprintf } from '@gitlab/ui';
+import { shallowMount } from '@vue/test-utils';
+import { sprintf } from '~/locale';
+import HistoryItem from '~/vue_shared/components/registry/history_item.vue';
+import TimeAgoTooltip from '~/vue_shared/components/time_ago_tooltip.vue';
+import ActivityHistoryItem from '~/clusters/agents/components/activity_history_item.vue';
+import { EVENT_DETAILS, DEFAULT_ICON } from '~/clusters/agents/constants';
+import { mockAgentHistoryActivityItems } from '../../mock_data';
+
+const agentName = 'cluster-agent';
+
+describe('ActivityHistoryItem', () => {
+  let wrapper;
+
+  const createWrapper = ({ event = {} }) => {
+    wrapper = shallowMount(ActivityHistoryItem, {
+      propsData: { event },
+      stubs: {
+        HistoryItem,
+        GlSprintf,
+      },
+    });
+  };
+
+  const findHistoryItem = () => wrapper.findComponent(HistoryItem);
+  const findTimeAgo = () => wrapper.find(TimeAgoTooltip);
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  describe.each`
+    kind                    | icon                                              | title                                                                   | lineNumber
+    ${'token_created'}      | ${EVENT_DETAILS.token_created.eventTypeIcon}      | ${sprintf(EVENT_DETAILS.token_created.title, { tokenName: agentName })} | ${0}
+    ${'token_revoked'}      | ${EVENT_DETAILS.token_revoked.eventTypeIcon}      | ${sprintf(EVENT_DETAILS.token_revoked.title, { tokenName: agentName })} | ${1}
+    ${'agent_connected'}    | ${EVENT_DETAILS.agent_connected.eventTypeIcon}    | ${sprintf(EVENT_DETAILS.agent_connected.title, { titleIcon: '' })}      | ${2}
+    ${'agent_disconnected'} | ${EVENT_DETAILS.agent_disconnected.eventTypeIcon} | ${sprintf(EVENT_DETAILS.agent_disconnected.title, { titleIcon: '' })}   | ${3}
+    ${'agent_connected'}    | ${EVENT_DETAILS.agent_connected.eventTypeIcon}    | ${sprintf(EVENT_DETAILS.agent_connected.title, { titleIcon: '' })}      | ${4}
+    ${'unknown_agent'}      | ${DEFAULT_ICON}                                   | ${'unknown_agent Event occurred'}                                       | ${5}
+  `('when the event type is $kind event', ({ icon, title, lineNumber }) => {
+    beforeEach(() => {
+      const event = mockAgentHistoryActivityItems[lineNumber];
+      createWrapper({ event });
+    });
+    it('renders the correct icon', () => {
+      expect(findHistoryItem().props('icon')).toBe(icon);
+    });
+    it('renders the correct title', () => {
+      expect(findHistoryItem().text()).toContain(title);
+    });
+    it('renders the correct time-ago tooltip', () => {
+      const activityEvents = mockAgentHistoryActivityItems;
+      expect(findTimeAgo().props('time')).toBe(activityEvents[lineNumber].recordedAt);
+    });
+  });
+});

spec/frontend/clusters/agents/components/show_spec.js

@@ -5,6 +5,7 @@ import VueApollo from 'vue-apollo';
 import { extendedWrapper } from 'helpers/vue_test_utils_helper';
 import ClusterAgentShow from '~/clusters/agents/components/show.vue';
 import TokenTable from '~/clusters/agents/components/token_table.vue';
+import ActivityEvents from '~/clusters/agents/components/activity_events_list.vue';
 import getAgentQuery from '~/clusters/agents/graphql/queries/get_cluster_agent.query.graphql';
 import { useFakeDate } from 'helpers/fake_date';
 import createMockApollo from 'helpers/mock_apollo_helper';
@@ -72,6 +73,7 @@ describe('ClusterAgentShow', () => {
   const findPaginationButtons = () => wrapper.findComponent(GlKeysetPagination);
   const findTokenCount = () => wrapper.findByTestId('cluster-agent-token-count').text();
   const findEESecurityTabSlot = () => wrapper.findByTestId('ee-security-tab');
+  const findActivity = () => wrapper.findComponent(ActivityEvents);
 
   afterEach(() => {
     wrapper.destroy();
@@ -103,6 +105,10 @@ describe('ClusterAgentShow', () => {
     it('should not render pagination buttons when there are no additional pages', () => {
       expect(findPaginationButtons().exists()).toBe(false);
     });
+
+    it('renders activity events list', () => {
+      expect(findActivity().exists()).toBe(true);
+    });
   });
 
   describe('when create user is unknown', () => {

spec/frontend/clusters/mock_data.js

+const user = {
+  id: 1,
+  name: 'Administrator',
+  username: 'root',
+  webUrl: 'http://172.31.0.1:3000/root',
+};
+
+const agentToken = {
+  id: 1,
+  name: 'cluster-agent',
+};
+
+export const defaultActivityEvent = {
+  kind: 'unknown_agent',
+  level: 'info',
+  recordedAt: '2021-11-22T19:26:56Z',
+  agentToken,
+  user,
+};
+
+export const mockAgentActivityEvents = [
+  {
+    kind: 'token_created',
+    level: 'info',
+    recordedAt: '2021-12-03T01:06:56Z',
+    agentToken,
+    user,
+  },
+
+  {
+    kind: 'token_revoked',
+    level: 'info',
+    recordedAt: '2021-12-03T00:26:56Z',
+    agentToken,
+    user,
+  },
+
+  {
+    kind: 'agent_connected',
+    level: 'info',
+    recordedAt: '2021-12-02T19:26:56Z',
+    agentToken,
+    user,
+  },
+
+  {
+    kind: 'agent_disconnected',
+    level: 'info',
+    recordedAt: '2021-12-02T19:26:56Z',
+    agentToken,
+    user,
+  },
+
+  {
+    kind: 'agent_connected',
+    level: 'info',
+    recordedAt: '2021-11-22T19:26:56Z',
+    agentToken,
+    user,
+  },
+
+  {
+    kind: 'unknown_agent',
+    level: 'info',
+    recordedAt: '2021-11-22T19:26:56Z',
+    agentToken,
+    user,
+  },
+];
+
+export const mockResponse = {
+  data: {
+    project: {
+      id: 'project-1',
+      clusterAgent: {
+        id: 'cluster-agent',
+        activityEvents: {
+          nodes: mockAgentActivityEvents,
+        },
+      },
+    },
+  },
+};
+
+export const mockEmptyResponse = {
+  data: {
+    project: {
+      id: 'project-1',
+      clusterAgent: {
+        id: 'cluster-agent',
+        activityEvents: {
+          nodes: [],
+        },
+      },
+    },
+  },
+};
+
+export const mockAgentHistoryActivityItems = [
+  {
+    kind: 'token_created',
+    level: 'info',
+    recordedAt: '2021-12-03T01:06:56Z',
+    agentToken,
+    user,
+    eventTypeIcon: 'token',
+    title: 'cluster-agent created',
+    body: 'Token created by Administrator',
+  },
+
+  {
+    kind: 'token_revoked',
+    level: 'info',
+    recordedAt: '2021-12-03T00:26:56Z',
+    agentToken,
+    user,
+    eventTypeIcon: 'token',
+    title: 'cluster-agent revoked',
+    body: 'Token revoked by Administrator',
+  },
+
+  {
+    kind: 'agent_connected',
+    level: 'info',
+    recordedAt: '2021-12-02T19:26:56Z',
+    agentToken,
+    user,
+    eventTypeIcon: 'connected',
+    title: 'Connected',
+    body: 'Agent Connected',
+  },
+
+  {
+    kind: 'agent_disconnected',
+    level: 'info',
+    recordedAt: '2021-12-02T19:26:56Z',
+    agentToken,
+    user,
+    eventTypeIcon: 'connected',
+    title: 'Not connected',
+    body: 'Agent Not connected',
+  },
+
+  {
+    kind: 'agent_connected',
+    level: 'info',
+    recordedAt: '2021-11-22T19:26:56Z',
+    agentToken,
+    user,
+    eventTypeIcon: 'connected',
+    title: 'Connected',
+    body: 'Agent Connected',
+  },
+
+  {
+    kind: 'unknown_agent',
+    level: 'info',
+    recordedAt: '2021-11-22T19:26:56Z',
+    agentToken,
+    user,
+    eventTypeIcon: 'token',
+    title: 'unknown_agent',
+    body: 'Event occurred',
+  },
+];