[ML] DF Analytics Creation: add progress indicator (#69583)

* add progress indicator to creation wizard page

* only show progress bar if job is started immediately

* add title and switch to timeout

* fix progress check

* clean up interval on unmount

* fix types

* clear interval if stats undefined. show progress if job created

x-pack/plugins/ml/public/application/data_frame_analytics/pages/analytics_creation/components/create_step/create_step.tsx

@@ -19,6 +19,7 @@ import { CreateAnalyticsFormProps } from '../../../analytics_management/hooks/us
 import { Messages } from '../shared';
 import { ANALYTICS_STEPS } from '../../page';
 import { BackToListPanel } from '../back_to_list_panel';
+import { ProgressStats } from './progress_stats';
 
 interface Props extends CreateAnalyticsFormProps {
   step: ANALYTICS_STEPS;
@@ -27,15 +28,18 @@ interface Props extends CreateAnalyticsFormProps {
 export const CreateStep: FC<Props> = ({ actions, state, step }) => {
   const { createAnalyticsJob, startAnalyticsJob } = actions;
   const { isAdvancedEditorValidJson, isJobCreated, isJobStarted, isValid, requestMessages } = state;
+  const { jobId } = state.form;
 
   const [checked, setChecked] = useState<boolean>(true);
+  const [showProgress, setShowProgress] = useState<boolean>(false);
 
   if (step !== ANALYTICS_STEPS.CREATE) return null;
 
   const handleCreation = async () => {
     await createAnalyticsJob();
 
     if (checked) {
+      setShowProgress(true);
       startAnalyticsJob();
     }
   };
@@ -82,6 +86,7 @@ export const CreateStep: FC<Props> = ({ actions, state, step }) => {
       )}
       <EuiSpacer size="s" />
       <Messages messages={requestMessages} />
+      {isJobCreated === true && showProgress && <ProgressStats jobId={jobId} />}
       {isJobCreated === true && <BackToListPanel />}
     </Fragment>
   );

x-pack/plugins/ml/public/application/data_frame_analytics/pages/analytics_creation/components/create_step/progress_stats.tsx

@@ -0,0 +1,110 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import React, { FC, useState, useEffect } from 'react';
+import { EuiFlexGroup, EuiFlexItem, EuiProgress, EuiSpacer, EuiText } from '@elastic/eui';
+import { i18n } from '@kbn/i18n';
+import { useMlKibana } from '../../../../../contexts/kibana';
+import { getDataFrameAnalyticsProgressPhase } from '../../../analytics_management/components/analytics_list/common';
+import { isGetDataFrameAnalyticsStatsResponseOk } from '../../../analytics_management/services/analytics_service/get_analytics';
+import { ml } from '../../../../../services/ml_api_service';
+import { DataFrameAnalyticsId } from '../../../../common/analytics';
+
+export const PROGRESS_REFRESH_INTERVAL_MS = 1000;
+
+export const ProgressStats: FC<{ jobId: DataFrameAnalyticsId }> = ({ jobId }) => {
+  const [initialized, setInitialized] = useState<boolean>(false);
+  const [currentProgress, setCurrentProgress] = useState<
+    | {
+        currentPhase: number;
+        progress: number;
+        totalPhases: number;
+      }
+    | undefined
+  >(undefined);
+
+  const {
+    services: { notifications },
+  } = useMlKibana();
+
+  useEffect(() => {
+    setInitialized(true);
+  }, []);
+
+  useEffect(() => {
+    const interval = setInterval(async () => {
+      try {
+        const analyticsStats = await ml.dataFrameAnalytics.getDataFrameAnalyticsStats(jobId);
+        const jobStats = isGetDataFrameAnalyticsStatsResponseOk(analyticsStats)
+          ? analyticsStats.data_frame_analytics[0]
+          : undefined;
+
+        if (jobStats !== undefined) {
+          const progressStats = getDataFrameAnalyticsProgressPhase(jobStats);
+          setCurrentProgress(progressStats);
+          if (
+            progressStats.currentPhase === progressStats.totalPhases &&
+            progressStats.progress === 100
+          ) {
+            clearInterval(interval);
+          }
+        } else {
+          clearInterval(interval);
+        }
+      } catch (e) {
+        notifications.toasts.addDanger(
+          i18n.translate('xpack.ml.dataframe.analytics.create.analyticsProgressErrorMessage', {
+            defaultMessage: 'An error occurred getting progress stats for analytics job {jobId}',
+            values: { jobId },
+          })
+        );
+        clearInterval(interval);
+      }
+    }, PROGRESS_REFRESH_INTERVAL_MS);
+
+    return () => clearInterval(interval);
+  }, [initialized]);
+
+  if (currentProgress === undefined) return null;
+
+  return (
+    <>
+      <EuiSpacer />
+      <EuiText size="m">
+        <strong>
+          {i18n.translate('xpack.ml.dataframe.analytics.create.analyticsProgressTitle', {
+            defaultMessage: 'Progress',
+          })}
+        </strong>
+      </EuiText>
+      <EuiSpacer size="s" />
+      <EuiFlexGroup alignItems="center">
+        <EuiFlexItem grow={false}>
+          <EuiText size="s">
+            <strong>
+              {i18n.translate('xpack.ml.dataframe.analytics.create.analyticsProgressPhaseTitle', {
+                defaultMessage: 'Phase',
+              })}{' '}
+              {currentProgress.currentPhase}/{currentProgress.totalPhases}
+            </strong>
+          </EuiText>
+        </EuiFlexItem>
+        <EuiFlexItem style={{ width: '400px' }} grow={false}>
+          <EuiProgress
+            value={currentProgress.progress}
+            max={100}
+            color="primary"
+            size="l"
+            data-test-subj="mlAnalyticsCreationWizardProgress"
+          />
+        </EuiFlexItem>
+        <EuiFlexItem grow={false}>
+          <EuiText size="s">{`${currentProgress.progress}%`}</EuiText>
+        </EuiFlexItem>
+      </EuiFlexGroup>
+    </>
+  );
+};