Merge branch '225405-vsa-says-not-enough-data-when-there-is-too-much-data' into 'master'

FE - VSA gracefully handle too much data error

Closes #225405

See merge request gitlab-org/gitlab!39179

ee/app/assets/javascripts/analytics/cycle_analytics/components/base.vue

@@ -71,6 +71,7 @@ export default {
       'endDate',
       'medians',
       'isLoadingValueStreams',
+      'selectedStageError',
     ]),
     // NOTE: formEvents are fetched in the same request as the list of stages (fetchGroupStagesAndEvents)
     // so i think its ok to bind formEvents here even though its only used as a prop to the custom-stage-form
@@ -296,6 +297,7 @@ export default {
           :custom-stage-form-active="customStageFormActive"
           :current-stage-events="currentStageEvents"
           :no-data-svg-path="noDataSvgPath"
+          :empty-state-message="selectedStageError"
         >
           <template #nav>
             <stage-table-nav

ee/app/assets/javascripts/analytics/cycle_analytics/components/duration_chart.vue

 <script>
 import { mapActions, mapState, mapGetters } from 'vuex';
+import { __ } from '~/locale';
 import ChartSkeletonLoader from '~/vue_shared/components/resizable_chart/skeleton_loader.vue';
 import { dateFormats } from '../../shared/constants';
 import Scatterplot from '../../shared/components/scatterplot.vue';
@@ -19,11 +20,16 @@ export default {
     },
   },
   computed: {
-    ...mapState('durationChart', ['isLoading']),
+    ...mapState('durationChart', ['isLoading', 'errorMessage']),
     ...mapGetters('durationChart', ['durationChartPlottableData']),
     hasData() {
       return Boolean(!this.isLoading && this.durationChartPlottableData.length);
     },
+    error() {
+      return this.errorMessage
+        ? this.errorMessage
+        : __('There is no data available. Please change your selection.');
+    },
   },
   methods: {
     ...mapActions('durationChart', ['updateSelectedDurationChartStages']),
@@ -53,7 +59,7 @@ export default {
       :scatter-data="durationChartPlottableData"
     />
     <div v-else ref="duration-chart-no-data" class="bs-callout bs-callout-info">
-      {{ __('There is no data available. Please change your selection.') }}
+      {{ error }}
     </div>
   </div>
 </template>

ee/app/assets/javascripts/analytics/cycle_analytics/components/stage_nav_item.vue

 <script>
-import { GlButton, GlTooltip, GlTooltipDirective } from '@gitlab/ui';
+import { GlButton, GlTooltipDirective } from '@gitlab/ui';
+import { __ } from '~/locale';
 import { approximateDuration } from '~/lib/utils/datetime_utility';
 import StageCardListItem from './stage_card_list_item.vue';
 
+const ERROR_MESSAGES = {
+  tooMuchData: __('There is too much data to calculate. Please change your selection.'),
+};
+
+const ERROR_NAV_ITEM_CONTENT = {
+  [ERROR_MESSAGES.tooMuchData]: __('Too much data'),
+  fallback: __('Not enough data'),
+};
+
 export default {
   name: 'StageNavItem',
   components: {
     StageCardListItem,
     GlButton,
-    GlTooltip,
   },
   directives: {
     GlTooltip: GlTooltipDirective,
@@ -39,6 +48,11 @@ export default {
       type: [String, Number],
       required: true,
     },
+    errorMessage: {
+      type: String,
+      required: false,
+      default: '',
+    },
   },
   data() {
     return {
@@ -56,6 +70,12 @@ export default {
     openMenuClasses() {
       return this.isHover ? 'd-flex justify-content-end' : '';
     },
+    error() {
+      return ERROR_NAV_ITEM_CONTENT[this.errorMessage] || ERROR_NAV_ITEM_CONTENT.fallback;
+    },
+    stageTitleTooltip() {
+      return this.isTitleOverflowing ? this.title : null;
+    },
   },
   mounted() {
     this.checkIfTitleOverflows();
@@ -100,15 +120,14 @@ export default {
         class="stage-nav-item-cell stage-name text-truncate w-50 pr-2"
         :class="{ 'font-weight-bold': isActive }"
       >
-        <gl-tooltip v-if="isTitleOverflowing" :target="() => $refs.titleSpan">
-          {{ title }}
-        </gl-tooltip>
-        <span ref="titleSpan">{{ title }}</span>
+        <span v-gl-tooltip="{ title: stageTitleTooltip }" data-testid="stage-title">{{
+          title
+        }}</span>
       </div>
       <div class="stage-nav-item-cell w-50 d-flex justify-content-between">
         <div ref="median" class="stage-median w-75 align-items-start">
           <span v-if="hasValue">{{ median }}</span>
-          <span v-else class="stage-empty">{{ __('Not enough data') }}</span>
+          <span v-else v-gl-tooltip="{ title: errorMessage }" class="stage-empty">{{ error }}</span>
         </div>
         <div v-show="isHover" ref="dropdown" :class="[openMenuClasses]" class="dropdown w-25">
           <gl-button

ee/app/assets/javascripts/analytics/cycle_analytics/components/stage_table.vue

@@ -5,6 +5,9 @@ import StageEventList from './stage_event_list.vue';
 import StageTableHeader from './stage_table_header.vue';
 
 const MIN_TABLE_HEIGHT = 420;
+const NOT_ENOUGH_DATA_ERROR = s__(
+  "ValueStreamAnalyticsStage|We don't have enough data to show this stage.",
+);
 
 export default {
   name: 'StageTable',
@@ -47,6 +50,11 @@ export default {
       type: String,
       required: true,
     },
+    emptyStateMessage: {
+      type: String,
+      required: false,
+      default: '',
+    },
   },
   data() {
     return {
@@ -92,6 +100,10 @@ export default {
         },
       ];
     },
+    emptyStateTitle() {
+      const { emptyStateMessage } = this;
+      return emptyStateMessage.length ? emptyStateMessage : NOT_ENOUGH_DATA_ERROR;
+    },
   },
   updated() {
     if (!this.isLoading && this.$refs.stageNav) {
@@ -139,7 +151,7 @@ export default {
               />
               <gl-empty-state
                 v-if="isEmptyStage"
-                :title="__('We don\'t have enough data to show this stage.')"
+                :title="emptyStateTitle"
                 :description="currentStage.emptyStageText"
                 :svg-path="noDataSvgPath"
               />

ee/app/assets/javascripts/analytics/cycle_analytics/components/stage_table_nav.vue

@@ -73,12 +73,15 @@ export default {
   },
   methods: {
     medianValue(id) {
-      return this.medians[id] ? this.medians[id] : null;
+      return this.medians[id]?.value || null;
     },
     isActiveStage(stageId) {
       const { currentStage, isCreatingCustomStage } = this;
       return Boolean(!isCreatingCustomStage && currentStage && stageId === currentStage.id);
     },
+    medianError(id) {
+      return this.medians[id]?.error || '';
+    },
   },
   STAGE_ACTIONS,
   noDragClass: NO_DRAG_CLASS,
@@ -94,6 +97,7 @@ export default {
       :value="medianValue(stage.id)"
       :is-active="isActiveStage(stage.id)"
       :is-default-stage="!stage.custom"
+      :error-message="medianError(stage.id)"
       @remove="$emit($options.STAGE_ACTIONS.REMOVE, stage.id)"
       @hide="$emit($options.STAGE_ACTIONS.HIDE, { id: stage.id, hidden: true })"
       @select="$emit($options.STAGE_ACTIONS.SELECT, stage)"

ee/app/assets/javascripts/analytics/cycle_analytics/components/type_of_work_charts.vue

@@ -3,7 +3,7 @@ import { mapActions, mapGetters, mapState } from 'vuex';
 import ChartSkeletonLoader from '~/vue_shared/components/resizable_chart/skeleton_loader.vue';
 import TasksByTypeChart from './tasks_by_type/tasks_by_type_chart.vue';
 import TasksByTypeFilters from './tasks_by_type/tasks_by_type_filters.vue';
-import { s__, sprintf } from '~/locale';
+import { s__, sprintf, __ } from '~/locale';
 import { formattedDate } from '../../shared/utils';
 import { TASKS_BY_TYPE_SUBJECT_ISSUE } from '../constants';
 
@@ -11,7 +11,11 @@ export default {
   name: 'TypeOfWorkCharts',
   components: { ChartSkeletonLoader, TasksByTypeChart, TasksByTypeFilters },
   computed: {
-    ...mapState('typeOfWork', ['isLoadingTasksByTypeChart', 'isLoadingTasksByTypeChartTopLabels']),
+    ...mapState('typeOfWork', [
+      'isLoadingTasksByTypeChart',
+      'isLoadingTasksByTypeChartTopLabels',
+      'errorMessage',
+    ]),
     ...mapGetters('typeOfWork', ['selectedTasksByTypeFilters', 'tasksByTypeChartData']),
     hasData() {
       return Boolean(this.tasksByTypeChartData?.data.length);
@@ -52,6 +56,11 @@ export default {
     selectedLabelIdsFilter() {
       return this.selectedTasksByTypeFilters?.selectedLabelIds || [];
     },
+    error() {
+      return this.errorMessage
+        ? this.errorMessage
+        : __('There is no data available. Please change your selection.');
+    },
   },
   methods: {
     ...mapActions('typeOfWork', ['setTasksByTypeFilters']),
@@ -80,7 +89,7 @@ export default {
         :series-names="tasksByTypeChartData.seriesNames"
       />
       <div v-else class="bs-callout bs-callout-info">
-        <p>{{ __('There is no data available. Please change your selection.') }}</p>
+        <p>{{ error }}</p>
       </div>
     </div>
   </div>

ee/app/assets/javascripts/analytics/cycle_analytics/store/actions.js

@@ -3,7 +3,13 @@ import { deprecatedCreateFlash as createFlash } from '~/flash';
 import { __, sprintf } from '~/locale';
 import httpStatus from '~/lib/utils/http_status';
 import * as types from './mutation_types';
-import { removeFlash, handleErrorOrRethrow, isStageNameExistsError } from '../utils';
+import {
+  removeFlash,
+  throwIfUserForbidden,
+  isStageNameExistsError,
+  checkForDataError,
+  flashErrorIfStatusNotOk,
+} from '../utils';
 
 const appendExtension = path => (path.indexOf('.') > -1 ? path : `${path}.json`);
 
@@ -48,9 +54,13 @@ export const receiveStageDataSuccess = ({ commit }, data) => {
   commit(types.RECEIVE_STAGE_DATA_SUCCESS, data);
 };
 
-export const receiveStageDataError = ({ commit }) => {
-  commit(types.RECEIVE_STAGE_DATA_ERROR);
-  createFlash(__('There was an error fetching data for the selected stage'));
+export const receiveStageDataError = ({ commit }, error) => {
+  const { message = '' } = error;
+  flashErrorIfStatusNotOk({
+    error,
+    message: __('There was an error fetching data for the selected stage'),
+  });
+  commit(types.RECEIVE_STAGE_DATA_ERROR, message);
 };
 
 export const fetchStageData = ({ dispatch, getters }, stageId) => {
@@ -63,27 +73,32 @@ export const fetchStageData = ({ dispatch, getters }, stageId) => {
     stageId,
     cycleAnalyticsRequestParams,
   })
+    .then(checkForDataError)
     .then(({ data }) => dispatch('receiveStageDataSuccess', data))
     .catch(error => dispatch('receiveStageDataError', error));
 };
 
 export const requestStageMedianValues = ({ commit }) => commit(types.REQUEST_STAGE_MEDIANS);
-export const receiveStageMedianValuesSuccess = ({ commit }, data) => {
-  commit(types.RECEIVE_STAGE_MEDIANS_SUCCESS, data);
-};
 
-export const receiveStageMedianValuesError = ({ commit }) => {
-  commit(types.RECEIVE_STAGE_MEDIANS_ERROR);
+export const receiveStageMedianValuesError = ({ commit }, error) => {
+  commit(types.RECEIVE_STAGE_MEDIANS_ERROR, error);
   createFlash(__('There was an error fetching median data for stages'));
 };
 
 const fetchStageMedian = ({ groupId, valueStreamId, stageId, params }) =>
-  Api.cycleAnalyticsStageMedian({ groupId, valueStreamId, stageId, params }).then(({ data }) => ({
+  Api.cycleAnalyticsStageMedian({ groupId, valueStreamId, stageId, params }).then(({ data }) => {
+    return {
       id: stageId,
-    ...data,
-  }));
+      ...(data?.error
+        ? {
+            error: data.error,
+            value: null,
+          }
+        : data),
+    };
+  });
 
-export const fetchStageMedianValues = ({ dispatch, getters }) => {
+export const fetchStageMedianValues = ({ dispatch, commit, getters }) => {
   const {
     currentGroupPath,
     cycleAnalyticsRequestParams,
@@ -103,13 +118,8 @@ export const fetchStageMedianValues = ({ dispatch, getters }) => {
       }),
     ),
   )
-    .then(data => dispatch('receiveStageMedianValuesSuccess', data))
-    .catch(error =>
-      handleErrorOrRethrow({
-        error,
-        action: () => dispatch('receiveStageMedianValuesError', error),
-      }),
-    );
+    .then(data => commit(types.RECEIVE_STAGE_MEDIANS_SUCCESS, data))
+    .catch(error => dispatch('receiveStageMedianValuesError', error));
 };
 
 export const requestCycleAnalyticsData = ({ commit }) => commit(types.REQUEST_CYCLE_ANALYTICS_DATA);
@@ -119,7 +129,7 @@ export const receiveCycleAnalyticsDataSuccess = ({ commit, dispatch }) => {
   dispatch('typeOfWork/fetchTopRankedGroupLabels');
 };
 
-export const receiveCycleAnalyticsDataError = ({ commit }, { response }) => {
+export const receiveCycleAnalyticsDataError = ({ commit }, { response = {} }) => {
   const { status = httpStatus.INTERNAL_SERVER_ERROR } = response;
 
   commit(types.RECEIVE_CYCLE_ANALYTICS_DATA_ERROR, status);
@@ -192,12 +202,10 @@ export const fetchGroupStagesAndEvents = ({ dispatch, getters }) => {
       dispatch('receiveGroupStagesSuccess', stages);
       dispatch('customStages/setStageEvents', events);
     })
-    .catch(error =>
-      handleErrorOrRethrow({
-        error,
-        action: () => dispatch('receiveGroupStagesError', error),
-      }),
-    );
+    .catch(error => {
+      throwIfUserForbidden(error);
+      return dispatch('receiveGroupStagesError', error);
+    });
 };
 
 export const requestUpdateStage = ({ commit }) => commit(types.REQUEST_UPDATE_STAGE);

ee/app/assets/javascripts/analytics/cycle_analytics/store/modules/duration_chart/actions.js

 import Api from 'ee/api';
-import { deprecatedCreateFlash as createFlash } from '~/flash';
 import { __ } from '~/locale';
 import * as types from './mutation_types';
+import { checkForDataError, flashErrorIfStatusNotOk } from '../../../utils';
 
 export const setLoading = ({ commit }, loading) => commit(types.SET_LOADING, loading);
 
 export const requestDurationData = ({ commit }) => commit(types.REQUEST_DURATION_DATA);
 
-export const receiveDurationDataError = ({ commit }) => {
-  commit(types.RECEIVE_DURATION_DATA_ERROR);
-  createFlash(__('There was an error while fetching value stream analytics duration data.'));
+export const receiveDurationDataError = ({ commit }, error) => {
+  flashErrorIfStatusNotOk({
+    error,
+    message: __('There was an error while fetching value stream analytics duration data.'),
+  });
+  commit(types.RECEIVE_DURATION_DATA_ERROR, error);
 };
 
 export const fetchDurationData = ({ dispatch, commit, rootGetters }) => {
@@ -29,15 +32,13 @@ export const fetchDurationData = ({ dispatch, commit, rootGetters }) => {
         valueStreamId: currentValueStreamId,
         stageId: slug,
         cycleAnalyticsRequestParams,
-      }).then(({ data }) => ({
-        slug,
-        selected: true,
-        data,
-      }));
+      })
+        .then(checkForDataError)
+        .then(({ data }) => ({ slug, selected: true, data }));
     }),
   )
     .then(data => commit(types.RECEIVE_DURATION_DATA_SUCCESS, data))
-    .catch(() => dispatch('receiveDurationDataError'));
+    .catch(error => dispatch('receiveDurationDataError', error));
 };
 
 export const updateSelectedDurationChartStages = ({ state, commit }, stages) => {

ee/app/assets/javascripts/analytics/cycle_analytics/store/modules/duration_chart/mutations.js

@@ -9,12 +9,18 @@ export default {
   },
   [types.REQUEST_DURATION_DATA](state) {
     state.isLoading = true;
+    state.errorCode = null;
+    state.errorMessage = '';
   },
   [types.RECEIVE_DURATION_DATA_SUCCESS](state, data) {
     state.durationData = data;
     state.isLoading = false;
+    state.errorCode = null;
+    state.errorMessage = '';
   },
-  [types.RECEIVE_DURATION_DATA_ERROR](state) {
+  [types.RECEIVE_DURATION_DATA_ERROR](state, { errorCode = null, message = '' } = {}) {
+    state.errorCode = errorCode;
+    state.errorMessage = message;
     state.durationData = [];
     state.isLoading = false;
   },

ee/app/assets/javascripts/analytics/cycle_analytics/store/modules/duration_chart/state.js

@@ -2,4 +2,7 @@ export default () => ({
   isLoading: false,
 
   durationData: [],
+
+  errorCode: null,
+  errorMessage: '',
 });

ee/app/assets/javascripts/analytics/cycle_analytics/store/modules/type_of_work/actions.js

 import Api from 'ee/api';
-import { deprecatedCreateFlash as createFlash } from '~/flash';
 import { __ } from '~/locale';
 import * as types from './mutation_types';
-import { handleErrorOrRethrow } from '../../../utils';
+import { throwIfUserForbidden, checkForDataError, flashErrorIfStatusNotOk } from '../../../utils';
 
 export const setLoading = ({ commit }, loading) => commit(types.SET_LOADING, loading);
 
@@ -12,8 +11,11 @@ export const receiveTopRankedGroupLabelsSuccess = ({ commit, dispatch }, data) =
 };
 
 export const receiveTopRankedGroupLabelsError = ({ commit }, error) => {
+  flashErrorIfStatusNotOk({
+    error,
+    message: __('There was an error fetching the top labels for the selected group'),
+  });
   commit(types.RECEIVE_TOP_RANKED_GROUP_LABELS_ERROR, error);
-  createFlash(__('There was an error fetching the top labels for the selected group'));
 };
 
 export const fetchTopRankedGroupLabels = ({ dispatch, commit, state, rootGetters }) => {
@@ -40,18 +42,20 @@ export const fetchTopRankedGroupLabels = ({ dispatch, commit, state, rootGetters
     milestone_title,
     assignee_username,
   })
+    .then(checkForDataError)
     .then(({ data }) => dispatch('receiveTopRankedGroupLabelsSuccess', data))
-    .catch(error =>
-      handleErrorOrRethrow({
-        error,
-        action: () => dispatch('receiveTopRankedGroupLabelsError', error),
-      }),
-    );
+    .catch(error => {
+      throwIfUserForbidden(error);
+      return dispatch('receiveTopRankedGroupLabelsError', error);
+    });
 };
 
 export const receiveTasksByTypeDataError = ({ commit }, error) => {
+  flashErrorIfStatusNotOk({
+    error,
+    message: __('There was an error fetching data for the tasks by type chart'),
+  });
   commit(types.RECEIVE_TASKS_BY_TYPE_DATA_ERROR, error);
-  createFlash(__('There was an error fetching data for the tasks by type chart'));
 };
 
 export const fetchTasksByTypeData = ({ dispatch, commit, state, rootGetters }) => {
@@ -84,6 +88,7 @@ export const fetchTasksByTypeData = ({ dispatch, commit, state, rootGetters }) =
       // until we resolve: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/34524
       label_ids: selectedLabelIds,
     })
+      .then(checkForDataError)
       .then(({ data }) => commit(types.RECEIVE_TASKS_BY_TYPE_DATA_SUCCESS, data))
       .catch(error => dispatch('receiveTasksByTypeDataError', error));
   }

ee/app/assets/javascripts/analytics/cycle_analytics/store/modules/type_of_work/mutations.js

@@ -12,16 +12,23 @@ export default {
     state.isLoadingTasksByTypeChartTopLabels = true;
     state.topRankedLabels = [];
     state.selectedLabelIds = [];
+    state.errorCode = null;
+    state.errorMessage = '';
   },
   [types.RECEIVE_TOP_RANKED_GROUP_LABELS_SUCCESS](state, data = []) {
     state.isLoadingTasksByTypeChartTopLabels = false;
     state.topRankedLabels = data.map(convertObjectPropsToCamelCase);
     state.selectedLabelIds = data.map(({ id }) => id);
+    state.errorCode = null;
+    state.errorMessage = '';
   },
-  [types.RECEIVE_TOP_RANKED_GROUP_LABELS_ERROR](state) {
+  [types.RECEIVE_TOP_RANKED_GROUP_LABELS_ERROR](state, { errorCode = null, message = '' } = {}) {
     state.isLoadingTasksByTypeChartTopLabels = false;
+    state.isLoadingTasksByTypeChart = false;
     state.topRankedLabels = [];
     state.selectedLabelIds = [];
+    state.errorCode = errorCode;
+    state.errorMessage = message;
   },
   [types.REQUEST_TASKS_BY_TYPE_DATA](state) {
     state.isLoadingTasksByTypeChart = true;

ee/app/assets/javascripts/analytics/cycle_analytics/store/modules/type_of_work/state.js

@@ -8,4 +8,7 @@ export default () => ({
   selectedLabelIds: [],
   topRankedLabels: [],
   data: [],
+
+  errorCode: null,
+  errorMessage: '',
 });

ee/app/assets/javascripts/analytics/cycle_analytics/store/mutations.js

@@ -34,6 +34,7 @@ export default {
   [types.REQUEST_STAGE_DATA](state) {
     state.isLoadingStage = true;
     state.isEmptyStage = false;
+    state.selectedStageError = '';
   },
   [types.RECEIVE_STAGE_DATA_SUCCESS](state, events = []) {
     state.currentStageEvents = events.map(fields =>
@@ -41,19 +42,21 @@ export default {
     );
     state.isEmptyStage = !events.length;
     state.isLoadingStage = false;
+    state.selectedStageError = '';
   },
-  [types.RECEIVE_STAGE_DATA_ERROR](state) {
+  [types.RECEIVE_STAGE_DATA_ERROR](state, message) {
     state.isEmptyStage = true;
     state.isLoadingStage = false;
+    state.selectedStageError = message;
   },
   [types.REQUEST_STAGE_MEDIANS](state) {
     state.medians = {};
   },
   [types.RECEIVE_STAGE_MEDIANS_SUCCESS](state, medians = []) {
     state.medians = medians.reduce(
-      (acc, { id, value }) => ({
+      (acc, { id, value, error = null }) => ({
         ...acc,
-        [id]: value,
+        [id]: { value, error },
       }),
       {},
     );

ee/app/assets/javascripts/analytics/cycle_analytics/store/state.js

@@ -28,6 +28,7 @@ export default () => ({
   deleteValueStreamError: null,
 
   stages: [],
+  selectedStageError: '',
   summary: [],
   medians: {},
   valueStreams: [],

ee/app/assets/javascripts/analytics/cycle_analytics/utils.js

@@ -4,7 +4,7 @@ import { s__, sprintf } from '~/locale';
 import { convertObjectPropsToCamelCase } from '~/lib/utils/common_utils';
 import httpStatus from '~/lib/utils/http_status';
 import { convertToSnakeCase, slugify } from '~/lib/utils/text_utility';
-import { hideFlash } from '~/flash';
+import { hideFlash, deprecatedCreateFlash as createFlash } from '~/flash';
 import {
   newDate,
   dayAfter,
@@ -295,11 +295,44 @@ export const getTasksByTypeData = ({ data = [], startDate = null, endDate = null
   };
 };
 
-export const handleErrorOrRethrow = ({ action, error }) => {
+const buildDataError = ({ status = httpStatus.INTERNAL_SERVER_ERROR, error }) => {
+  const err = new Error(error);
+  err.errorCode = status;
+  return err;
+};
+
+/**
+ * Flashes an error message if the status code is not 200
+ *
+ * @param {Object} error - Axios error object
+ * @param {String} errorMessage - Error message to display
+ */
+export const flashErrorIfStatusNotOk = ({ error, message }) => {
+  if (error?.errorCode !== httpStatus.OK) {
+    createFlash(message);
+  }
+};
+
+/**
+ * Data errors can occur when DB queries for analytics data time out
+ * The server will respond with a status `200` success and include the
+ * relevant error in the response body
+ *
+ * @param {Object} Response - Axios ajax response
+ * @returns {Object} Returns the axios ajax response
+ */
+export const checkForDataError = response => {
+  const { data, status } = response;
+  if (data?.error) {
+    throw buildDataError({ status, error: data.error });
+  }
+  return response;
+};
+
+export const throwIfUserForbidden = error => {
   if (error?.response?.status === httpStatus.FORBIDDEN) {
     throw error;
   }
-  action();
 };
 
 export const isStageNameExistsError = ({ status, errors }) =>

ee/spec/frontend/analytics/cycle_analytics/components/stage_nav_item_spec.js

 // NOTE: more tests will be added in https://gitlab.com/gitlab-org/gitlab/issues/121613
-import { GlTooltip } from '@gitlab/ui';
+import { createMockDirective, getBinding } from 'helpers/vue_mock_directive';
 import { shallowMount } from '@vue/test-utils';
 import StageNavItem from 'ee/analytics/cycle_analytics/components/stage_nav_item.vue';
 import { approximateDuration } from '~/lib/utils/datetime_utility';
@@ -17,16 +17,20 @@ describe('StageNavItem', () => {
         value: median,
         ...props,
       },
+      directives: {
+        GlTooltip: createMockDirective(),
+      },
       ...opts,
     });
   }
 
   let wrapper = null;
-  const findStageTitle = () => wrapper.find({ ref: 'title' });
+  const findStageTitle = () => wrapper.find('[data-testid="stage-title"]');
+  const findStageTooltip = () => getBinding(findStageTitle().element, 'gl-tooltip');
   const findStageMedian = () => wrapper.find({ ref: 'median' });
   const findDropdown = () => wrapper.find({ ref: 'dropdown' });
   const setFakeTitleWidth = value =>
-    Object.defineProperty(wrapper.find({ ref: 'titleSpan' }).element, 'scrollWidth', {
+    Object.defineProperty(findStageTitle().element, 'scrollWidth', {
       value,
     });
 
@@ -52,6 +56,11 @@ describe('StageNavItem', () => {
       expect(findStageTitle().text()).toEqual(title);
     });
 
+    it('renders the stage title without a tooltip', () => {
+      const tt = findStageTooltip();
+      expect(tt.value.title).toBeNull();
+    });
+
     it('renders the dropdown with edit and remove options', () => {
       expect(findDropdown().exists()).toBe(true);
       expect(wrapper.find('[data-testid="edit-btn"]').exists()).toBe(true);
@@ -93,11 +102,9 @@ describe('StageNavItem', () => {
     });
 
     it('renders the tooltip', () => {
-      expect(wrapper.find(GlTooltip).exists()).toBe(true);
-    });
-
-    it('tooltip has the correct stage title', () => {
-      expect(wrapper.find(GlTooltip).text()).toBe(longTitle);
+      const tt = findStageTooltip();
+      expect(tt.value).toBeDefined();
+      expect(tt.value.title).toBe(longTitle);
     });
   });
 });

ee/spec/frontend/analytics/cycle_analytics/components/stage_table_spec.js

@@ -17,6 +17,7 @@ const $sel = {
 
 const headers = ['Stage', 'Median', issueStage.legend, 'Time'];
 const noDataSvgPath = 'path/to/no/data';
+const tooMuchDataError = "We don't have enough data to show this stage.";
 
 const StageTableNavSlot = {
   name: 'stage-table-nav-slot-stub',
@@ -50,15 +51,15 @@ function createComponent(props = {}, shallow = false) {
 }
 
 describe('StageTable', () => {
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
   describe('headers', () => {
     beforeEach(() => {
       wrapper = createComponent();
     });
 
-    afterEach(() => {
-      wrapper.destroy();
-    });
-
     it('will render the headers', () => {
       const renderedHeaders = wrapper.findAll($sel.headers);
       expect(renderedHeaders).toHaveLength(headers.length);
@@ -75,10 +76,6 @@ describe('StageTable', () => {
       wrapper = createComponent();
     });
 
-    afterEach(() => {
-      wrapper.destroy();
-    });
-
     it('will render the events list', () => {
       expect(wrapper.find($sel.eventList).exists()).toBeTruthy();
     });
@@ -112,6 +109,10 @@ describe('StageTable', () => {
         expect(evshtml).toContain(ev.title);
       });
     });
+
+    it('will not display the default data message', () => {
+      expect(wrapper.html()).not.toContain(tooMuchDataError);
+    });
   });
 
   it('isLoading = true', () => {
@@ -142,17 +143,28 @@ describe('StageTable', () => {
       wrapper = createComponent({ isEmptyStage: true });
     });
 
-    afterEach(() => {
-      wrapper.destroy();
-    });
-
     it('will render the empty stage illustration', () => {
       expect(wrapper.find($sel.illustration).exists()).toBeTruthy();
       expect(wrapper.find($sel.illustration).html()).toContain(noDataSvgPath);
     });
 
-    it('will display the no data message', () => {
-      expect(wrapper.html()).toContain("We don't have enough data to show this stage.");
+    it('will display the default no data message', () => {
+      expect(wrapper.html()).toContain(tooMuchDataError);
+    });
+  });
+
+  describe('emptyStateMessage set', () => {
+    const emptyStateMessage = 'Too much data';
+    beforeEach(() => {
+      wrapper = createComponent({ isEmptyStage: true, emptyStateMessage });
+    });
+
+    it('will not display the default data message', () => {
+      expect(wrapper.html()).not.toContain(tooMuchDataError);
+    });
+
+    it('will display the custom message', () => {
+      expect(wrapper.html()).toContain(emptyStateMessage);
     });
   });
 });

ee/spec/frontend/analytics/cycle_analytics/mock_data.js

@@ -29,10 +29,10 @@ export const endpoints = {
   groupLabels: /groups\/[A-Z|a-z|\d|\-|_]+\/-\/labels.json/,
   recentActivityData: /analytics\/value_stream_analytics\/summary/,
   timeMetricsData: /analytics\/value_stream_analytics\/time_summary/,
-  durationData: /analytics\/value_stream_analytics\/value_streams\/\d+\/stages\/\d+\/duration_chart/,
-  stageData: /analytics\/value_stream_analytics\/value_streams\/\d+\/stages\/\d+\/records/,
-  stageMedian: /analytics\/value_stream_analytics\/value_streams\/\d+\/stages\/\d+\/median/,
-  baseStagesEndpoint: /analytics\/value_stream_analytics\/value_streams\/\d+\/stages$/,
+  durationData: /analytics\/value_stream_analytics\/value_streams\/\w+\/stages\/\w+\/duration_chart/,
+  stageData: /analytics\/value_stream_analytics\/value_streams\/\w+\/stages\/\w+\/records/,
+  stageMedian: /analytics\/value_stream_analytics\/value_streams\/\w+\/stages\/\w+\/median/,
+  baseStagesEndpoint: /analytics\/value_stream_analytics\/value_streams\/\w+\/stages$/,
   tasksByTypeData: /analytics\/type_of_work\/tasks_by_type/,
   tasksByTypeTopLabelsData: /analytics\/type_of_work\/tasks_by_type\/top_labels/,
   valueStreamData: /analytics\/value_stream_analytics\/value_streams/,

ee/spec/frontend/analytics/cycle_analytics/store/actions_spec.js

@@ -292,15 +292,17 @@ describe('Cycle analytics actions', () => {
   });
 
   describe('receiveStageDataError', () => {
-    beforeEach(() => {});
+    const message = 'fake error';
+
     it(`commits the ${types.RECEIVE_STAGE_DATA_ERROR} mutation`, () => {
       return testAction(
         actions.receiveStageDataError,
-        null,
+        { message },
         state,
         [
           {
             type: types.RECEIVE_STAGE_DATA_ERROR,
+            payload: message,
           },
         ],
         [],
@@ -308,7 +310,7 @@ describe('Cycle analytics actions', () => {
     });
 
     it('will flash an error message', () => {
-      actions.receiveStageDataError({ commit: () => {} });
+      actions.receiveStageDataError({ commit: () => {} }, {});
       shouldFlashAMessage('There was an error fetching data for the selected stage');
     });
   });
@@ -754,11 +756,8 @@ describe('Cycle analytics actions', () => {
         actions.fetchStageMedianValues,
         null,
         state,
-        [],
-        [
-          { type: 'requestStageMedianValues' },
-          { type: 'receiveStageMedianValuesSuccess', payload: fetchMedianResponse },
-        ],
+        [{ type: types.RECEIVE_STAGE_MEDIANS_SUCCESS, payload: fetchMedianResponse }],
+        [{ type: 'requestStageMedianValues' }],
       );
     });
 
@@ -781,6 +780,25 @@ describe('Cycle analytics actions', () => {
         });
     });
 
+    describe(`Status ${httpStatusCodes.OK} and error message in response`, () => {
+      const dataError = 'Too much data';
+      const payload = activeStages.map(({ slug: id }) => ({ value: null, id, error: dataError }));
+
+      beforeEach(() => {
+        mock.onGet(endpoints.stageMedian).reply(httpStatusCodes.OK, { error: dataError });
+      });
+
+      it(`dispatches the 'RECEIVE_STAGE_MEDIANS_SUCCESS' with ${dataError}`, () => {
+        return testAction(
+          actions.fetchStageMedianValues,
+          null,
+          state,
+          [{ type: types.RECEIVE_STAGE_MEDIANS_SUCCESS, payload }],
+          [{ type: 'requestStageMedianValues' }],
+        );
+      });
+    });
+
     describe('with a failing request', () => {
       beforeEach(() => {
         mock.onGet(endpoints.stageMedian).reply(httpStatusCodes.NOT_FOUND, { error });
@@ -805,11 +823,12 @@ describe('Cycle analytics actions', () => {
     it(`commits the ${types.RECEIVE_STAGE_MEDIANS_ERROR} mutation`, () =>
       testAction(
         actions.receiveStageMedianValuesError,
-        null,
+        {},
         state,
         [
           {
             type: types.RECEIVE_STAGE_MEDIANS_ERROR,
+            payload: {},
           },
         ],
         [],
@@ -821,18 +840,6 @@ describe('Cycle analytics actions', () => {
     });
   });
 
-  describe('receiveStageMedianValuesSuccess', () => {
-    it(`commits the ${types.RECEIVE_STAGE_MEDIANS_SUCCESS} mutation`, () => {
-      return testAction(
-        actions.receiveStageMedianValuesSuccess,
-        { ...stageData },
-        state,
-        [{ type: types.RECEIVE_STAGE_MEDIANS_SUCCESS, payload: { events: [] } }],
-        [],
-      );
-    });
-  });
-
   describe('initializeCycleAnalytics', () => {
     let mockDispatch;
     let mockCommit;

ee/spec/frontend/analytics/cycle_analytics/store/modules/duration_chart/actions_spec.js

@@ -5,6 +5,7 @@ import * as rootGetters from 'ee/analytics/cycle_analytics/store/getters';
 import * as getters from 'ee/analytics/cycle_analytics/store/modules/duration_chart/getters';
 import * as actions from 'ee/analytics/cycle_analytics/store/modules/duration_chart/actions';
 import * as types from 'ee/analytics/cycle_analytics/store/modules/duration_chart/mutation_types';
+import httpStatusCodes from '~/lib/utils/http_status';
 import {
   group,
   allowedStages as stages,
@@ -22,6 +23,7 @@ const [stage1, stage2] = stages;
 const hiddenStage = { ...stage1, hidden: true, id: 3, slug: 3 };
 const activeStages = [stage1, stage2];
 const [selectedValueStream] = valueStreams;
+const error = new Error(`Request failed with status code ${httpStatusCodes.BAD_REQUEST}`);
 
 const rootState = {
   startDate,
@@ -104,9 +106,40 @@ describe('DurationChart actions', () => {
         });
     });
 
+    describe(`Status ${httpStatusCodes.OK} and error message in response`, () => {
+      const dataError = 'Too much data';
+
+      beforeEach(() => {
+        mock.onGet(endpoints.durationData).reply(httpStatusCodes.OK, { error: dataError });
+      });
+
+      it(`dispatches the 'receiveDurationDataError' with ${dataError}`, () => {
+        const dispatch = jest.fn();
+        const commit = jest.fn();
+
+        return actions
+          .fetchDurationData({
+            dispatch,
+            commit,
+            rootState,
+            rootGetters: {
+              ...rootGetters,
+              activeStages,
+            },
+          })
+          .then(() => {
+            expect(commit).not.toHaveBeenCalled();
+            expect(dispatch.mock.calls).toEqual([
+              ['requestDurationData'],
+              ['receiveDurationDataError', new Error(dataError)],
+            ]);
+          });
+      });
+    });
+
     describe('receiveDurationDataError', () => {
       beforeEach(() => {
-        mock.onGet(endpoints.durationData).reply(404);
+        mock.onGet(endpoints.durationData).reply(httpStatusCodes.BAD_REQUEST, error);
       });
 
       it("dispatches the 'receiveDurationDataError' action when there is an error", () => {
@@ -122,7 +155,10 @@ describe('DurationChart actions', () => {
             },
           })
           .then(() => {
-            expect(dispatch).toHaveBeenCalledWith('receiveDurationDataError');
+            expect(dispatch.mock.calls).toEqual([
+              ['requestDurationData'],
+              ['receiveDurationDataError', error],
+            ]);
           });
       });
     });
@@ -141,6 +177,7 @@ describe('DurationChart actions', () => {
         [
           {
             type: types.RECEIVE_DURATION_DATA_ERROR,
+            payload: {},
           },
         ],
         [],

ee/spec/frontend/analytics/cycle_analytics/store/modules/type_of_work/actions_spec.js

@@ -9,10 +9,16 @@ import {
   TASKS_BY_TYPE_FILTERS,
   TASKS_BY_TYPE_SUBJECT_ISSUE,
 } from 'ee/analytics/cycle_analytics/constants';
-
+import { deprecatedCreateFlash } from '~/flash';
 import httpStatusCodes from '~/lib/utils/http_status';
-import { groupLabels, endpoints, startDate, endDate } from '../../../mock_data';
-import { shouldFlashAMessage } from '../../../helpers';
+import { groupLabels, endpoints, startDate, endDate, rawTasksByTypeData } from '../../../mock_data';
+
+jest.mock('~/flash');
+
+const shouldFlashAMessage = (msg, type = null) => {
+  const args = type ? [msg, type] : [msg];
+  expect(deprecatedCreateFlash).toHaveBeenCalledWith(...args);
+};
 
 const error = new Error(`Request failed with status code ${httpStatusCodes.NOT_FOUND}`);
 
@@ -24,7 +30,7 @@ describe('Type of work actions', () => {
 
     subject: TASKS_BY_TYPE_SUBJECT_ISSUE,
     topRankedLabels: [],
-    selectedLabelIds: [],
+    selectedLabelIds: groupLabels.map(({ id }) => id),
     data: [],
   };
 
@@ -64,7 +70,7 @@ describe('Type of work actions', () => {
 
     describe('succeeds', () => {
       beforeEach(() => {
-        mock.onGet(endpoints.tasksByTypeTopLabelsData).replyOnce(200, groupLabels);
+        mock.onGet(endpoints.tasksByTypeTopLabelsData).replyOnce(httpStatusCodes.OK, groupLabels);
       });
 
       it('dispatches receiveTopRankedGroupLabelsSuccess if the request succeeds', () => {
@@ -78,10 +84,6 @@ describe('Type of work actions', () => {
       });
 
       describe('receiveTopRankedGroupLabelsSuccess', () => {
-        beforeEach(() => {
-          setFixtures('<div class="flash-container"></div>');
-        });
-
         it(`commits the ${types.RECEIVE_TOP_RANKED_GROUP_LABELS_SUCCESS} mutation and dispatches the 'fetchTasksByTypeData' action`, () => {
           return testAction(
             actions.receiveTopRankedGroupLabelsSuccess,
@@ -99,9 +101,33 @@ describe('Type of work actions', () => {
       });
     });
 
+    describe(`Status ${httpStatusCodes.OK} and error message in response`, () => {
+      const dataError = 'Too much data';
+
+      beforeEach(() => {
+        mock
+          .onGet(endpoints.tasksByTypeTopLabelsData)
+          .reply(httpStatusCodes.OK, { error: dataError });
+      });
+
+      it(`dispatches the 'receiveTopRankedGroupLabelsError' with ${dataError}`, () => {
+        return testAction(
+          actions.fetchTopRankedGroupLabels,
+          null,
+          state,
+          [
+            {
+              type: types.REQUEST_TOP_RANKED_GROUP_LABELS,
+            },
+          ],
+          [{ type: 'receiveTopRankedGroupLabelsError', payload: new Error(dataError) }],
+        );
+      });
+    });
+
     describe('with an error', () => {
       beforeEach(() => {
-        mock.onGet(endpoints.fetchTopRankedGroupLabels).replyOnce(404);
+        mock.onGet(endpoints.fetchTopRankedGroupLabels).replyOnce(httpStatusCodes.NOT_FOUND);
       });
 
       it('dispatches receiveTopRankedGroupLabelsError if the request fails', () => {
@@ -116,16 +142,82 @@ describe('Type of work actions', () => {
     });
 
     describe('receiveTopRankedGroupLabelsError', () => {
+      it('flashes an error message if the request fails', () => {
+        actions.receiveTopRankedGroupLabelsError({
+          commit: () => {},
+        });
+
+        shouldFlashAMessage('There was an error fetching the top labels for the selected group');
+      });
+    });
+  });
+
+  describe('fetchTasksByTypeData', () => {
+    beforeEach(() => {
+      gon.api_version = 'v4';
+      state = { ...mockedState, subject: TASKS_BY_TYPE_SUBJECT_ISSUE };
+    });
+
+    describe('succeeds', () => {
+      beforeEach(() => {
+        mock.onGet(endpoints.tasksByTypeData).replyOnce(httpStatusCodes.OK, rawTasksByTypeData);
+      });
+
+      it(`commits the ${types.RECEIVE_TASKS_BY_TYPE_DATA_SUCCESS} if the request succeeds`, () => {
+        return testAction(
+          actions.fetchTasksByTypeData,
+          null,
+          state,
+          [
+            { type: types.REQUEST_TASKS_BY_TYPE_DATA },
+            { type: types.RECEIVE_TASKS_BY_TYPE_DATA_SUCCESS, payload: rawTasksByTypeData },
+          ],
+          [],
+        );
+      });
+    });
+
+    describe(`Status ${httpStatusCodes.OK} and error message in response`, () => {
+      const dataError = 'Too much data';
+
+      beforeEach(() => {
+        mock.onGet(endpoints.tasksByTypeData).reply(httpStatusCodes.OK, { error: dataError });
+      });
+
+      it(`dispatches the 'receiveTasksByTypeDataError' with ${dataError}`, () => {
+        return testAction(
+          actions.fetchTasksByTypeData,
+          null,
+          state,
+          [{ type: types.REQUEST_TASKS_BY_TYPE_DATA }],
+          [{ type: 'receiveTasksByTypeDataError', payload: new Error(dataError) }],
+        );
+      });
+    });
+
+    describe('with an error', () => {
       beforeEach(() => {
-        setFixtures('<div class="flash-container"></div>');
+        mock.onGet(endpoints.fetchTasksByTypeData).replyOnce(httpStatusCodes.NOT_FOUND);
       });
 
+      it('dispatches receiveTasksByTypeDataError if the request fails', () => {
+        return testAction(
+          actions.fetchTasksByTypeData,
+          null,
+          state,
+          [{ type: 'REQUEST_TASKS_BY_TYPE_DATA' }],
+          [{ type: 'receiveTasksByTypeDataError', payload: error }],
+        );
+      });
+    });
+
+    describe('receiveTasksByTypeDataError', () => {
       it('flashes an error message if the request fails', () => {
-        actions.receiveTopRankedGroupLabelsError({
+        actions.receiveTasksByTypeDataError({
           commit: () => {},
         });
 
-        shouldFlashAMessage('There was an error fetching the top labels for the selected group');
+        shouldFlashAMessage('There was an error fetching data for the tasks by type chart');
       });
     });
   });

ee/spec/frontend/analytics/cycle_analytics/store/mutations_spec.js

@@ -149,7 +149,7 @@ describe('Cycle analytics mutations', () => {
   });
 
   describe(`${types.RECEIVE_STAGE_MEDIANS_SUCCESS}`, () => {
-    it('sets each id as a key in the median object with the corresponding value', () => {
+    it('sets each id as a key in the median object with the corresponding value and error', () => {
       const stateWithData = {
         medians: {},
       };
@@ -159,7 +159,10 @@ describe('Cycle analytics mutations', () => {
         { id: 2, value: 10 },
       ]);
 
-      expect(stateWithData.medians).toEqual({ '1': 20, '2': 10 });
+      expect(stateWithData.medians).toEqual({
+        '1': { value: 20, error: null },
+        '2': { value: 10, error: null },
+      });
     });
   });
 

locale/gitlab.pot

@@ -26696,6 +26696,9 @@ msgstr ""
 msgid "Too many projects enabled. You will need to manage them via the console or the API."
 msgstr ""
 
+msgid "Too much data"
+msgstr ""
+
 msgid "Topics (optional)"
 msgstr ""
 
@@ -27872,6 +27875,9 @@ msgstr ""
 msgid "Value Stream Name"
 msgstr ""
 
+msgid "ValueStreamAnalyticsStage|We don't have enough data to show this stage."
+msgstr ""
+
 msgid "ValueStreamAnalytics|%{days}d"
 msgstr ""