Add support for HDR percentiles in TSVB visualizations

src/plugins/vis_type_timeseries/common/vis_schema.ts

@@ -104,6 +104,7 @@ export const metricsItems = schema.object({
       })
     )
   ),
+  numberOfSignificantValueDigits: numberOptional,
   percentiles: schema.maybe(
     schema.arrayOf(
       schema.object({

src/plugins/vis_type_timeseries/public/application/components/aggs/percentile.js

@@ -24,17 +24,19 @@ import { FieldSelect } from './field_select';
 import { AggRow } from './agg_row';
 import { createChangeHandler } from '../lib/create_change_handler';
 import { createSelectHandler } from '../lib/create_select_handler';
+import { createNumberHandler } from '../lib/create_number_handler';
 import {
   htmlIdGenerator,
   EuiSpacer,
-  EuiFlexGroup,
+  EuiFlexGrid,
   EuiFlexItem,
   EuiFormLabel,
   EuiFormRow,
 } from '@elastic/eui';
 import { FormattedMessage } from '@kbn/i18n/react';
 import { KBN_FIELD_TYPES } from '../../../../../../plugins/data/public';
 import { Percentiles, newPercentile } from './percentile_ui';
+import { PercentileHdr } from './percentile_hdr';
 
 const RESTRICT_FIELDS = [KBN_FIELD_TYPES.NUMBER, KBN_FIELD_TYPES.HISTOGRAM];
 
@@ -46,6 +48,8 @@ export function PercentileAgg(props) {
 
   const handleChange = createChangeHandler(props.onChange, model);
   const handleSelectChange = createSelectHandler(handleChange);
+  const handleNumberChange = createNumberHandler(handleChange);
+
   const indexPattern =
     (series.override_index_pattern && series.series_index_pattern) || panel.index_pattern;
 
@@ -66,7 +70,7 @@ export function PercentileAgg(props) {
       siblings={props.siblings}
       dragHandleProps={props.dragHandleProps}
     >
-      <EuiFlexGroup gutterSize="s">
+      <EuiFlexGrid gutterSize="s" columns={2}>
         <EuiFlexItem>
           <EuiFormLabel htmlFor={htmlId('aggregation')}>
             <FormattedMessage
@@ -103,11 +107,25 @@ export function PercentileAgg(props) {
             />
           </EuiFormRow>
         </EuiFlexItem>
-      </EuiFlexGroup>
-
-      <EuiSpacer size="m" />
-
-      <Percentiles onChange={handleChange} name="percentiles" model={model} panel={panel} />
+        <EuiFlexItem>
+          <EuiFormRow
+            label={
+              <FormattedMessage
+                id="visTypeTimeseries.percentile.percents"
+                defaultMessage="Percents"
+              />
+            }
+          >
+            <Percentiles onChange={handleChange} name="percentiles" model={model} panel={panel} />
+          </EuiFormRow>
+        </EuiFlexItem>
+        <EuiFlexItem>
+          <PercentileHdr
+            value={model.numberOfSignificantValueDigits}
+            onChange={handleNumberChange('numberOfSignificantValueDigits')}
+          />
+        </EuiFlexItem>
+      </EuiFlexGrid>
     </AggRow>
   );
 }

src/plugins/vis_type_timeseries/public/application/components/aggs/percentile_hdr.tsx

@@ -0,0 +1,52 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import React from 'react';
+import { EuiFieldNumber, EuiFormRow, EuiIconTip } from '@elastic/eui';
+import { FormattedMessage } from '@kbn/i18n/react';
+
+export interface PercentileHdrProps {
+  value: number | undefined;
+  onChange: () => void;
+}
+
+export const PercentileHdr = ({ value, onChange }: PercentileHdrProps) => (
+  <EuiFormRow
+    label={
+      <>
+        <FormattedMessage
+          id="visTypeTimeseries.percentileHdr.numberOfSignificantValueDigits"
+          defaultMessage="Number of significant value digits (HDR histogram)"
+        />{' '}
+        <EuiIconTip
+          position="right"
+          content={
+            <FormattedMessage
+              id="visTypeTimeseries.percentileHdr.numberOfSignificantValueDigits.hint"
+              defaultMessage="HDR Histogram (High Dynamic Range Histogram) is an alternative implementation that can be useful when calculating percentile ranks for latency measurements as it can be faster than the t-digest implementation with the trade-off of a larger memory footprint. Number of significant value digits parameter specifies the resolution of values for the histogram in number of significant digits"
+            />
+          }
+          type="questionInCircle"
+        />
+      </>
+    }
+  >
+    <EuiFieldNumber min={1} value={value || ''} onChange={onChange} />
+  </EuiFormRow>
+);

src/plugins/vis_type_timeseries/public/application/components/aggs/percentile_rank/multi_value_row.tsx

@@ -18,15 +18,8 @@
  */
 import React, { ChangeEvent } from 'react';
 import { get } from 'lodash';
-import { FormattedMessage } from '@kbn/i18n/react';
-import {
-  htmlIdGenerator,
-  EuiFieldNumber,
-  EuiFlexGroup,
-  EuiFlexItem,
-  EuiFormLabel,
-  EuiSpacer,
-} from '@elastic/eui';
+
+import { EuiFieldNumber, EuiFlexGroup, EuiFlexItem, EuiPanel } from '@elastic/eui';
 
 import { AddDeleteButtons } from '../../add_delete_buttons';
 
@@ -50,26 +43,16 @@ export const MultiValueRow = ({
   disableAdd,
   disableDelete,
 }: MultiValueRowProps) => {
-  const htmlId = htmlIdGenerator();
-
   const onFieldNumberChange = (event: ChangeEvent<HTMLInputElement>) =>
     onChange({
       ...model,
       value: get(event, 'target.value'),
     });
 
   return (
-    <div className="tvbAggRow__multiValueRow">
-      <EuiFlexGroup responsive={false} alignItems="center">
-        <EuiFlexItem grow={false}>
-          <EuiFormLabel htmlFor={htmlId('value')}>
-            <FormattedMessage
-              id="visTypeTimeseries.multivalueRow.valueLabel"
-              defaultMessage="Value:"
-            />
-          </EuiFormLabel>
-        </EuiFlexItem>
-        <EuiFlexItem grow={false}>
+    <EuiPanel paddingSize="s" className="tvbAggRow__multiValueRow">
+      <EuiFlexGroup alignItems="center" gutterSize="s">
+        <EuiFlexItem>
           <EuiFieldNumber
             value={model.value === '' ? '' : Number(model.value)}
             placeholder="0"
@@ -82,11 +65,11 @@ export const MultiValueRow = ({
             onDelete={() => onDelete(model)}
             disableDelete={disableDelete}
             disableAdd={disableAdd}
+            responsive={false}
           />
         </EuiFlexItem>
       </EuiFlexGroup>
-      <EuiSpacer />
-    </div>
+    </EuiPanel>
   );
 };
 

src/plugins/vis_type_timeseries/public/application/components/aggs/percentile_rank/percentile_rank.tsx

@@ -20,11 +20,11 @@
 import React from 'react';
 import {
   htmlIdGenerator,
-  EuiFlexGroup,
   EuiFlexItem,
   EuiFormLabel,
   EuiFormRow,
   EuiSpacer,
+  EuiFlexGrid,
 } from '@elastic/eui';
 import { FormattedMessage } from '@kbn/i18n/react';
 import { AggSelect } from '../agg_select';
@@ -34,12 +34,16 @@ import { FieldSelect } from '../field_select';
 import { createChangeHandler } from '../../lib/create_change_handler';
 // @ts-ignore
 import { createSelectHandler } from '../../lib/create_select_handler';
+// @ts-ignore
+import { createNumberHandler } from '../../lib/create_number_handler';
+
 import { AggRow } from '../agg_row';
 import { PercentileRankValues } from './percentile_rank_values';
 
 import { IFieldType, KBN_FIELD_TYPES } from '../../../../../../../plugins/data/public';
 import { MetricsItemsSchema, PanelSchema, SeriesItemsSchema } from '../../../../../common/types';
 import { DragHandleProps } from '../../../../types';
+import { PercentileHdr } from '../percentile_hdr';
 
 const RESTRICT_FIELDS = [KBN_FIELD_TYPES.NUMBER, KBN_FIELD_TYPES.HISTOGRAM];
 
@@ -67,6 +71,7 @@ export const PercentileRankAgg = (props: PercentileRankAggProps) => {
   const isTablePanel = panel.type === 'table';
   const handleChange = createChangeHandler(props.onChange, model);
   const handleSelectChange = createSelectHandler(handleChange);
+  const handleNumberChange = createNumberHandler(handleChange);
 
   const handlePercentileRankValuesChange = (values: MetricsItemsSchema['values']) => {
     handleChange({
@@ -84,7 +89,7 @@ export const PercentileRankAgg = (props: PercentileRankAggProps) => {
       siblings={props.siblings}
       dragHandleProps={props.dragHandleProps}
     >
-      <EuiFlexGroup gutterSize="s">
+      <EuiFlexGrid gutterSize="s" columns={2}>
         <EuiFlexItem>
           <EuiFormLabel htmlFor={htmlId('aggregation')}>
             <FormattedMessage
@@ -121,17 +126,32 @@ export const PercentileRankAgg = (props: PercentileRankAggProps) => {
             />
           </EuiFormRow>
         </EuiFlexItem>
-      </EuiFlexGroup>
-      <EuiSpacer />
-      {model.values && (
-        <PercentileRankValues
-          disableAdd={isTablePanel}
-          disableDelete={isTablePanel}
-          showOnlyLastRow={isTablePanel}
-          model={model.values}
-          onChange={handlePercentileRankValuesChange}
-        />
-      )}
+
+        <EuiFlexItem>
+          <EuiFormRow
+            label={
+              <FormattedMessage
+                id="visTypeTimeseries.percentileRank.values"
+                defaultMessage="Values"
+              />
+            }
+          >
+            <PercentileRankValues
+              disableAdd={isTablePanel}
+              disableDelete={isTablePanel}
+              showOnlyLastRow={isTablePanel}
+              model={model.values!}
+              onChange={handlePercentileRankValuesChange}
+            />
+          </EuiFormRow>
+        </EuiFlexItem>
+        <EuiFlexItem>
+          <PercentileHdr
+            value={model.numberOfSignificantValueDigits}
+            onChange={handleNumberChange('numberOfSignificantValueDigits')}
+          />
+        </EuiFlexItem>
+      </EuiFlexGrid>
     </AggRow>
   );
 };

src/plugins/vis_type_timeseries/public/application/components/aggs/percentile_rank/percentile_rank_values.tsx

@@ -19,7 +19,7 @@
 import React from 'react';
 import { last } from 'lodash';
 
-import { EuiFlexGroup } from '@elastic/eui';
+import { EuiFlexGroup, EuiFlexItem } from '@elastic/eui';
 import { MultiValueRow } from './multi_value_row';
 
 interface PercentileRankValuesProps {
@@ -52,19 +52,20 @@ export const PercentileRankValues = (props: PercentileRankValuesProps) => {
     disableDeleteRow: boolean;
     disableAddRow: boolean;
   }) => (
-    <MultiValueRow
-      key={`percentileRankValue__item${rowModel.id}`}
-      onAdd={onAddValue}
-      onChange={onChangeValue}
-      onDelete={onDeleteValue}
-      disableDelete={disableDeleteRow}
-      disableAdd={disableAddRow}
-      model={rowModel}
-    />
+    <EuiFlexItem key={`percentileRankValue__item${rowModel.id}`}>
+      <MultiValueRow
+        onAdd={onAddValue}
+        onChange={onChangeValue}
+        onDelete={onDeleteValue}
+        disableDelete={disableDeleteRow}
+        disableAdd={disableAddRow}
+        model={rowModel}
+      />
+    </EuiFlexItem>
   );
 
   return (
-    <EuiFlexGroup direction="column" responsive={false} gutterSize="xs">
+    <EuiFlexGroup direction="column" gutterSize="s">
       {showOnlyLastRow &&
         renderRow({
           rowModel: {