vmui: memory leak fix (#4455)

* fix: optimize the preparation of data for the graph

* fix: optimize tooltip rendering

* fix: optimize re-rendering of the chart

* vmui: memory leak fix

app/vmui/packages/vmui/src/components/Chart/Heatmap/HeatmapChart/HeatmapChart.tsx

@@ -73,10 +73,9 @@ const HeatmapChart: FC<HeatmapChartProps> = ({
     });
   };
   const throttledSetScale = useCallback(throttle(setScale, 500), []);
-  const setPlotScale = ({ u, min, max }: { u: uPlot, min: number, max: number }) => {
+  const setPlotScale = ({ min, max }: { min: number, max: number }) => {
     const delta = (max - min) * 1000;
     if ((delta < limitsDurations.min) || (delta > limitsDurations.max)) return;
-    u.setScale("x", { min, max });
     setXRange({ min, max });
     throttledSetScale({ min, max });
   };
@@ -112,7 +111,7 @@ const HeatmapChart: FC<HeatmapChartProps> = ({
       const nxRange = e.deltaY < 0 ? oxRange * factor : oxRange / factor;
       const min = xVal - (zoomPos / width) * nxRange;
       const max = min + nxRange;
-      u.batch(() => setPlotScale({ u, min, max }));
+      u.batch(() => setPlotScale({ min, max }));
     });
   };
 
@@ -126,7 +125,6 @@ const HeatmapChart: FC<HeatmapChartProps> = ({
       e.preventDefault();
       const factor = (xRange.max - xRange.min) / 10 * (plus ? 1 : -1);
       setPlotScale({
-        u: uPlotInst,
         min: xRange.min + factor,
         max: xRange.max - factor
       });
@@ -241,7 +239,7 @@ const HeatmapChart: FC<HeatmapChartProps> = ({
         (u) => {
           const min = u.posToVal(u.select.left, "x");
           const max = u.posToVal(u.select.left + u.select.width, "x");
-          setPlotScale({ u, min, max });
+          setPlotScale({ min, max });
         }
       ]
     },
@@ -295,7 +293,6 @@ const HeatmapChart: FC<HeatmapChartProps> = ({
 
     const zoomFactor = dur / 50 * dir;
     uPlotInst.batch(() => setPlotScale({
-      u: uPlotInst,
       min: min + zoomFactor,
       max: max - zoomFactor
     }));

app/vmui/packages/vmui/src/components/Chart/Line/ChartTooltip/ChartTooltip.tsx

@@ -17,11 +17,11 @@ import useEventListener from "../../../../hooks/useEventListener";
 export interface ChartTooltipProps {
   id: string,
   u: uPlot,
-  metrics: MetricResult[],
+  metricItem: MetricResult,
-  series: SeriesItem[],
+  seriesItem: SeriesItem,
-  yRange: number[];
   unit?: string,
   isSticky?: boolean,
+  showQueryNum?: boolean,
   tooltipOffset: { left: number, top: number },
   tooltipIdx: { seriesIdx: number, dataIdx: number },
   onClose?: (id: string) => void
@@ -31,12 +31,12 @@ const ChartTooltip: FC<ChartTooltipProps> = ({
   u,
   id,
   unit = "",
-  metrics,
+  metricItem,
-  series,
+  seriesItem,
-  yRange,
   tooltipIdx,
   tooltipOffset,
   isSticky,
+  showQueryNum,
   onClose
 }) => {
   const tooltipRef = useRef<HTMLDivElement>(null);
@@ -49,21 +49,17 @@ const ChartTooltip: FC<ChartTooltipProps> = ({
   const [dataIdx, setDataIdx] = useState(tooltipIdx.dataIdx);
 
   const value = get(u, ["data", seriesIdx, dataIdx], 0);
-  const valueFormat = formatPrettyNumber(value, get(yRange, [0]), get(yRange, [1]));
+  const valueFormat = formatPrettyNumber(value, get(u, ["scales", "1", "min"], 0), get(u, ["scales", "1", "max"], 1));
   const dataTime = u.data[0][dataIdx];
   const date = dayjs(dataTime * 1000).tz().format(DATE_FULL_TIMEZONE_FORMAT);
 
-  const color = series[seriesIdx]?.stroke+"";
+  const color = `${seriesItem?.stroke}`;
-
+  const calculations = seriesItem?.calculations || {};
-  const calculations = series[seriesIdx]?.calculations || {};
+  const group = metricItem?.group || 0;
-
-  const groups = new Set(metrics.map(m => m.group));
-  const showQueryNum = groups.size > 1;
-  const group = metrics[seriesIdx-1]?.group || 0;
 
 
   const fullMetricName = useMemo(() => {
-    const metric = metrics[seriesIdx-1]?.metric || {};
+    const metric = metricItem?.metric || {};
     const labelNames = Object.keys(metric).filter(x => x != "__name__");
     const labels = labelNames.map(key => `${key}=${JSON.stringify(metric[key])}`);
     let metricName = metric["__name__"] || "";
@@ -71,7 +67,7 @@ const ChartTooltip: FC<ChartTooltipProps> = ({
       metricName += "{" + labels.join(",") + "}";
     }
     return metricName;
-  }, [metrics, seriesIdx]);
+  }, [metricItem]);
 
   const handleClose = () => {
     onClose && onClose(id);
@@ -97,7 +93,7 @@ const ChartTooltip: FC<ChartTooltipProps> = ({
   const calcPosition = () => {
     if (!tooltipRef.current) return;
 
-    const topOnChart = u.valToPos((value || 0), series[seriesIdx]?.scale || "1");
+    const topOnChart = u.valToPos((value || 0), seriesItem?.scale || "1");
     const leftOnChart = u.valToPos(dataTime, "x");
     const { width: tooltipWidth, height: tooltipHeight } = tooltipRef.current.getBoundingClientRect();
     const { width, height } = u.over.getBoundingClientRect();
@@ -142,9 +138,7 @@ const ChartTooltip: FC<ChartTooltipProps> = ({
     >
       <div className="vm-chart-tooltip-header">
         <div className="vm-chart-tooltip-header__date">
-          {showQueryNum && (
+          {showQueryNum && (<div>Query {group}</div>)}
-            <div>Query {group}</div>
-          )}
           {date}
         </div>
         {isSticky && (

app/vmui/packages/vmui/src/components/Chart/Line/Legend/LegendItem/LegendItem.tsx

@@ -1,9 +1,8 @@
-import React, { FC, useState, useMemo } from "preact/compat";
+import React, { FC, useMemo } from "preact/compat";
 import { MouseEvent } from "react";
 import { LegendItemType } from "../../../../../utils/uplot/types";
 import "./style.scss";
 import classNames from "classnames";
-import Tooltip from "../../../../Main/Tooltip/Tooltip";
 import { getFreeFields } from "./helpers";
 import useCopyToClipboard from "../../../../../hooks/useCopyToClipboard";
 
@@ -15,7 +14,6 @@ interface LegendItemProps {
 
 const LegendItem: FC<LegendItemProps> = ({ legend, onChange, isHeatmap }) => {
   const copyToClipboard = useCopyToClipboard();
-  const [copiedValue, setCopiedValue] = useState("");
 
   const freeFormFields = useMemo(() => {
     const result = getFreeFields(legend);
@@ -25,20 +23,17 @@ const LegendItem: FC<LegendItemProps> = ({ legend, onChange, isHeatmap }) => {
   const calculations = legend.calculations;
   const showCalculations = Object.values(calculations).some(v => v);
 
-  const handleClickFreeField = async (val: string, id: string) => {
+  const handleClickFreeField = async (val: string) => {
-    const copied = await copyToClipboard(val);
+    await copyToClipboard(val, `${val} has been copied`);
-    if (!copied) return;
-    setCopiedValue(id);
-    setTimeout(() => setCopiedValue(""), 2000);
   };
 
   const createHandlerClick = (legend: LegendItemType) => (e: MouseEvent<HTMLDivElement>) => {
     onChange && onChange(legend, e.ctrlKey || e.metaKey);
   };
 
-  const createHandlerCopy = (freeField: string, id: string) => (e: MouseEvent<HTMLDivElement>) => {
+  const createHandlerCopy = (freeField: string) => (e: MouseEvent<HTMLDivElement>) => {
     e.stopPropagation();
-    handleClickFreeField(freeField, id);
+    handleClickFreeField(freeField);
   };
 
   return (
@@ -62,21 +57,14 @@ const LegendItem: FC<LegendItemProps> = ({ legend, onChange, isHeatmap }) => {
           {legend.freeFormFields["__name__"]}
           {!!freeFormFields.length && <>&#123;</>}
           {freeFormFields.map((f, i) => (
-            <Tooltip
-              key={f.id}
-              open={copiedValue === f.id}
-              title={"copied!"}
-              placement="top-center"
-            >
             <span
               className="vm-legend-item-info__free-fields"
               key={f.key}
-                onClick={createHandlerCopy(f.freeField, f.id)}
+              onClick={createHandlerCopy(f.freeField)}
               title="copy to clipboard"
             >
               {f.freeField}{i + 1 < freeFormFields.length && ","}
             </span>
-            </Tooltip>
           ))}
           {!!freeFormFields.length && <>&#125;</>}
         </span>

app/vmui/packages/vmui/src/components/Chart/Line/LineChart/LineChart.tsx

@@ -1,18 +1,14 @@
-import React, { FC, useCallback, useEffect, useMemo, useRef, useState } from "preact/compat";
+import React, { FC, useCallback, useEffect, useRef, useState } from "preact/compat";
 import uPlot, {
   AlignedData as uPlotData,
   Options as uPlotOptions,
   Series as uPlotSeries,
-  Range,
-  Scales,
-  Scale,
 } from "uplot";
 import { defaultOptions } from "../../../../utils/uplot/helpers";
 import { dragChart } from "../../../../utils/uplot/events";
-import { getAxes, getMinMaxBuffer } from "../../../../utils/uplot/axes";
+import { getAxes } from "../../../../utils/uplot/axes";
 import { MetricResult } from "../../../../api/types";
 import { dateFromSeconds, formatDateForNativeInput, limitsDurations } from "../../../../utils/time";
-import throttle from "lodash.throttle";
 import { TimeParams } from "../../../../types";
 import { YaxisState } from "../../../../state/graph/reducer";
 import "uplot/dist/uPlot.min.css";
@@ -24,6 +20,7 @@ import { useAppState } from "../../../../state/common/StateContext";
 import { SeriesItem } from "../../../../utils/uplot/series";
 import { ElementSize } from "../../../../hooks/useElementSize";
 import useEventListener from "../../../../hooks/useEventListener";
+import { getRangeX, getRangeY, getScales } from "../../../../utils/uplot/scales";
 
 export interface LineChartProps {
   metrics: MetricResult[];
@@ -37,8 +34,6 @@ export interface LineChartProps {
   height?: number;
 }
 
-enum typeChartUpdate {xRange = "xRange", yRange = "yRange"}
-
 const LineChart: FC<LineChartProps> = ({
   data,
   series,
@@ -55,7 +50,6 @@ const LineChart: FC<LineChartProps> = ({
   const uPlotRef = useRef<HTMLDivElement>(null);
   const [isPanning, setPanning] = useState(false);
   const [xRange, setXRange] = useState({ min: period.start, max: period.end });
-  const [yRange, setYRange] = useState([0, 1]);
   const [uPlotInst, setUPlotInst] = useState<uPlot>();
   const [startTouchDistance, setStartTouchDistance] = useState(0);
 
@@ -63,24 +57,18 @@ const LineChart: FC<LineChartProps> = ({
   const [tooltipIdx, setTooltipIdx] = useState({ seriesIdx: -1, dataIdx: -1 });
   const [tooltipOffset, setTooltipOffset] = useState({ left: 0, top: 0 });
   const [stickyTooltips, setStickyToolTips] = useState<ChartTooltipProps[]>([]);
-  const tooltipId = useMemo(() => `${tooltipIdx.seriesIdx}_${tooltipIdx.dataIdx}`, [tooltipIdx]);
 
-  const setScale = ({ min, max }: { min: number, max: number }): void => {
+  const setPlotScale = ({ min, max }: { min: number, max: number }) => {
+    const delta = (max - min) * 1000;
+    if ((delta < limitsDurations.min) || (delta > limitsDurations.max)) return;
+    setXRange({ min, max });
     setPeriod({
       from: dayjs(min * 1000).toDate(),
       to: dayjs(max * 1000).toDate()
     });
   };
-  const throttledSetScale = useCallback(throttle(setScale, 500), []);
-  const setPlotScale = ({ u, min, max }: { u: uPlot, min: number, max: number }) => {
-    const delta = (max - min) * 1000;
-    if ((delta < limitsDurations.min) || (delta > limitsDurations.max)) return;
-    u.setScale("x", { min, max });
-    setXRange({ min, max });
-    throttledSetScale({ min, max });
-  };
 
-  const onReadyChart = (u: uPlot) => {
+  const onReadyChart = (u: uPlot): void => {
     const factor = 0.9;
     setTooltipOffset({
       left: parseFloat(u.over.style.left),
@@ -111,7 +99,7 @@ const LineChart: FC<LineChartProps> = ({
       const nxRange = e.deltaY < 0 ? oxRange * factor : oxRange / factor;
       const min = xVal - (zoomPos / width) * nxRange;
       const max = min + nxRange;
-      u.batch(() => setPlotScale({ u, min, max }));
+      u.batch(() => setPlotScale({ min, max }));
     });
   };
 
@@ -125,33 +113,41 @@ const LineChart: FC<LineChartProps> = ({
       e.preventDefault();
       const factor = (xRange.max - xRange.min) / 10 * (plus ? 1 : -1);
       setPlotScale({
-        u: uPlotInst,
         min: xRange.min + factor,
         max: xRange.max - factor
       });
     }
   }, [uPlotInst, xRange]);
 
-  const handleClick = useCallback(() => {
+  const getChartProps = useCallback(() => {
-    if (!showTooltip) return;
+    const { seriesIdx, dataIdx } = tooltipIdx;
-    const id = `${tooltipIdx.seriesIdx}_${tooltipIdx.dataIdx}`;
+    const id = `${seriesIdx}_${dataIdx}`;
-    const props = {
+    const metricItem = metrics[seriesIdx-1];
+    const seriesItem = series[seriesIdx] as SeriesItem;
+
+    const groups = new Set(metrics.map(m => m.group));
+    const showQueryNum = groups.size > 1;
+
+    return {
       id,
       unit,
-      series,
+      seriesItem,
-      metrics,
+      metricItem,
-      yRange,
       tooltipIdx,
       tooltipOffset,
+      showQueryNum,
     };
+  }, [uPlotInst, metrics, series, tooltipIdx, tooltipOffset, unit]);
 
-    if (!stickyTooltips.find(t => t.id === id)) {
+  const handleClick = useCallback(() => {
-      const tooltipProps = JSON.parse(JSON.stringify(props));
+    if (!showTooltip) return;
-      setStickyToolTips(prev => [...prev, tooltipProps]);
+    const props = getChartProps();
+    if (!stickyTooltips.find(t => t.id === props.id)) {
+      setStickyToolTips(prev => [...prev, props as ChartTooltipProps]);
     }
-  }, [metrics, series, stickyTooltips, tooltipIdx, tooltipOffset, showTooltip, unit, yRange]);
+  }, [getChartProps, stickyTooltips, showTooltip]);
 
-  const handleUnStick = (id:string) => {
+  const handleUnStick = (id: string) => {
     setStickyToolTips(prev => prev.filter(t => t.id !== id));
   };
 
@@ -165,23 +161,34 @@ const LineChart: FC<LineChartProps> = ({
     setTooltipIdx(prev => ({ ...prev, seriesIdx }));
   };
 
-  const getRangeX = (): Range.MinMax => [xRange.min, xRange.max];
+  const addSeries = (u: uPlot, series: uPlotSeries[]) => {
-
+    series.forEach((s) => {
-  const getRangeY = (u: uPlot, min = 0, max = 1, axis: string): Range.MinMax => {
+      u.addSeries(s);
-    if (axis == "1") {
+    });
-      setYRange([min, max]);
-    }
-    if (yaxis.limits.enable) return yaxis.limits.range[axis];
-    return getMinMaxBuffer(min, max);
   };
 
-  const getScales = (): Scales => {
+  const delSeries = (u: uPlot) => {
-    const scales: { [key: string]: { range: Scale.Range } } = { x: { range: getRangeX } };
+    for (let i = u.series.length - 1; i >= 0; i--) {
-    const ranges = Object.keys(yaxis.limits.range);
+      u.delSeries(i);
-    (ranges.length ? ranges : ["1"]).forEach(axis => {
+    }
-      scales[axis] = { range: (u: uPlot, min = 0, max = 1) => getRangeY(u, min, max, axis) };
+  };
+
+  const delHooks = (u: uPlot) => {
+    Object.keys(u.hooks).forEach(hook => {
+      u.hooks[hook as keyof uPlot.Hooks.Arrays] = [];
     });
-    return scales;
+  };
+
+  const handleDestroy = (u: uPlot) => {
+    delSeries(u);
+    delHooks(u);
+    u.setData([]);
+  };
+
+  const setSelect = (u: uPlot) => {
+    const min = u.posToVal(u.select.left, "x");
+    const max = u.posToVal(u.select.left + u.select.width, "x");
+    setPlotScale({ min, max });
   };
 
   const options: uPlotOptions = {
@@ -189,49 +196,18 @@ const LineChart: FC<LineChartProps> = ({
     tzDate: ts => dayjs(formatDateForNativeInput(dateFromSeconds(ts))).local().toDate(),
     series,
     axes: getAxes( [{}, { scale: "1" }], unit),
-    scales: { ...getScales() },
+    scales: getScales(yaxis, xRange),
     width: layoutSize.width || 400,
     height: height || 500,
-    plugins: [{ hooks: { ready: onReadyChart, setCursor, setSeries: seriesFocus } }],
     hooks: {
-      setSelect: [
+      ready: [onReadyChart],
-        (u) => {
+      setSeries: [seriesFocus],
-          const min = u.posToVal(u.select.left, "x");
+      setCursor: [setCursor],
-          const max = u.posToVal(u.select.left + u.select.width, "x");
+      setSelect: [setSelect],
-          setPlotScale({ u, min, max });
+      destroy: [handleDestroy],
-        }
+    },
-      ]
-    }
   };
 
-  const updateChart = (type: typeChartUpdate): void => {
-    if (!uPlotInst) return;
-    switch (type) {
-      case typeChartUpdate.xRange:
-        uPlotInst.scales.x.range = getRangeX;
-        break;
-      case typeChartUpdate.yRange:
-        Object.keys(yaxis.limits.range).forEach(axis => {
-          if (!uPlotInst.scales[axis]) return;
-          uPlotInst.scales[axis].range = (u: uPlot, min = 0, max = 1) => getRangeY(u, min, max, axis);
-        });
-        break;
-    }
-    if (!isPanning) uPlotInst.redraw();
-  };
-
-  useEffect(() => setXRange({ min: period.start, max: period.end }), [period]);
-
-  useEffect(() => {
-    setStickyToolTips([]);
-    setTooltipIdx({ seriesIdx: -1, dataIdx: -1 });
-    if (!uPlotRef.current) return;
-    const u = new uPlot(options, data, uPlotRef.current);
-    setUPlotInst(u);
-    setXRange({ min: period.start, max: period.end });
-    return u.destroy;
-  }, [uPlotRef.current, series, layoutSize, height, isDarkTheme]);
-
   const handleTouchStart = (e: TouchEvent) => {
     if (e.touches.length !== 2) return;
     e.preventDefault();
@@ -257,19 +233,63 @@ const LineChart: FC<LineChartProps> = ({
 
     const zoomFactor = dur / 50 * dir;
     uPlotInst.batch(() => setPlotScale({
-      u: uPlotInst,
       min: min + zoomFactor,
       max: max - zoomFactor
     }));
   }, [uPlotInst, startTouchDistance, xRange]);
 
-  useEffect(() => updateChart(typeChartUpdate.xRange), [xRange]);
+  useEffect(() => {
-  useEffect(() => updateChart(typeChartUpdate.yRange), [yaxis]);
+    setXRange({ min: period.start, max: period.end });
+  }, [period]);
 
   useEffect(() => {
-    const show = tooltipIdx.dataIdx !== -1 && tooltipIdx.seriesIdx !== -1;
+    setStickyToolTips([]);
-    setShowTooltip(show);
+    setTooltipIdx({ seriesIdx: -1, dataIdx: -1 });
-  }, [tooltipIdx, stickyTooltips]);
+    if (!uPlotRef.current) return;
+    if (uPlotInst) uPlotInst.destroy();
+    const u = new uPlot(options, data, uPlotRef.current);
+    setUPlotInst(u);
+    setXRange({ min: period.start, max: period.end });
+    return u.destroy;
+  }, [uPlotRef, isDarkTheme]);
+
+  useEffect(() => {
+    if (!uPlotInst) return;
+    uPlotInst.setData(data);
+    uPlotInst.redraw();
+  }, [data]);
+
+  useEffect(() => {
+    if (!uPlotInst) return;
+    delSeries(uPlotInst);
+    addSeries(uPlotInst, series);
+    uPlotInst.redraw();
+  }, [series]);
+
+  useEffect(() => {
+    if (!uPlotInst) return;
+    Object.keys(yaxis.limits.range).forEach(axis => {
+      if (!uPlotInst.scales[axis]) return;
+      uPlotInst.scales[axis].range = (u: uPlot, min = 0, max = 1) => getRangeY(u, min, max, axis, yaxis);
+    });
+    uPlotInst.redraw();
+  }, [yaxis]);
+
+  useEffect(() => {
+    if (!uPlotInst) return;
+    uPlotInst.scales.x.range = () => getRangeX(xRange);
+    uPlotInst.redraw();
+  }, [xRange]);
+
+  useEffect(() => {
+    if (!uPlotInst) return;
+    uPlotInst.setSize({ width: layoutSize.width || 400, height: height || 500 });
+    uPlotInst.redraw();
+  }, [height, layoutSize]);
+
+  useEffect(() => {
+    setShowTooltip(tooltipIdx.dataIdx !== -1 && tooltipIdx.seriesIdx !== -1);
+  }, [tooltipIdx]);
 
   useEventListener("click", handleClick);
   useEventListener("keydown", handleKeyDown);
@@ -293,14 +313,8 @@ const LineChart: FC<LineChartProps> = ({
       />
       {uPlotInst && showTooltip && (
         <ChartTooltip
-          unit={unit}
+          {...getChartProps()}
           u={uPlotInst}
-          series={series as SeriesItem[]}
-          metrics={metrics}
-          yRange={yRange}
-          tooltipIdx={tooltipIdx}
-          tooltipOffset={tooltipOffset}
-          id={tooltipId}
         />
       )}
 

app/vmui/packages/vmui/src/components/Main/Tooltip/Tooltip.tsx

@@ -4,7 +4,6 @@ import "./style.scss";
 import { ReactNode } from "react";
 import { ExoticComponent } from "react";
 import useDeviceDetect from "../../../hooks/useDeviceDetect";
-import useEventListener from "../../../hooks/useEventListener";
 
 interface TooltipProps {
   children: ReactNode
@@ -30,7 +29,6 @@ const Tooltip: FC<TooltipProps> = ({
   const popperRef = useRef<HTMLDivElement>(null);
 
   const onScrollWindow = () => setIsOpen(false);
-  useEventListener("scroll", onScrollWindow);
 
   useEffect(() => {
     if (!popperRef.current || !isOpen) return;
@@ -38,6 +36,11 @@ const Tooltip: FC<TooltipProps> = ({
       width: popperRef.current.clientWidth,
       height: popperRef.current.clientHeight
     });
+    window.addEventListener("scroll", onScrollWindow);
+
+    return () => {
+      window.removeEventListener("scroll", onScrollWindow);
+    };
   }, [isOpen]);
 
   const popperStyle = useMemo(() => {

app/vmui/packages/vmui/src/components/Views/GraphView/GraphView.tsx

@@ -1,10 +1,15 @@
-import React, { FC, useCallback, useEffect, useMemo, useState } from "preact/compat";
+import React, { FC, useEffect, useMemo, useState } from "preact/compat";
 import { MetricResult } from "../../../api/types";
 import LineChart from "../../Chart/Line/LineChart/LineChart";
 import { AlignedData as uPlotData, Series as uPlotSeries } from "uplot";
 import Legend from "../../Chart/Line/Legend/Legend";
 import LegendHeatmap from "../../Chart/Heatmap/LegendHeatmap/LegendHeatmap";
-import { getHideSeries, getLegendItem, getSeriesItemContext, SeriesItem } from "../../../utils/uplot/series";
+import {
+  getHideSeries,
+  getLegendItem,
+  getSeriesItemContext,
+  SeriesItem
+} from "../../../utils/uplot/series";
 import { getLimitsYAxis, getMinMaxBuffer, getTimeSeries } from "../../../utils/uplot/axes";
 import { LegendItemType } from "../../../utils/uplot/types";
 import { TimeParams } from "../../../types";
@@ -56,7 +61,6 @@ const GraphView: FC<GraphViewProps> = ({
   const currentStep = useMemo(() => customStep || period.step || "1s", [period.step, customStep]);
 
   const data = useMemo(() => normalizeData(dataRaw, isHistogram), [isHistogram, dataRaw]);
-  const getSeriesItem = useCallback(getSeriesItemContext(), [data]);
 
   const [dataChart, setDataChart] = useState<uPlotData>([[]]);
   const [series, setSeries] = useState<uPlotSeries[]>([]);
@@ -64,6 +68,10 @@ const GraphView: FC<GraphViewProps> = ({
   const [hideSeries, setHideSeries] = useState<string[]>([]);
   const [legendValue, setLegendValue] = useState<TooltipHeatmapProps | null>(null);
 
+  const getSeriesItem = useMemo(() => {
+    return getSeriesItemContext(data, hideSeries, alias);
+  }, [data, hideSeries, alias]);
+
   const setLimitsYaxis = (values: {[key: string]: number[]}) => {
     const limits = getLimitsYAxis(values, !isHistogram);
     setYaxisLimits(limits);
@@ -73,10 +81,6 @@ const GraphView: FC<GraphViewProps> = ({
     setHideSeries(getHideSeries({ hideSeries, legend, metaKey, series }));
   };
 
-  const handleChangeLegend = (val: TooltipHeatmapProps) => {
-    setLegendValue(val);
-  };
-
   const prepareHistogramData = (data: (number | null)[][]) => {
     const values = data.slice(1, data.length);
     const xs: (number | null | undefined)[] = [];
@@ -105,8 +109,9 @@ const GraphView: FC<GraphViewProps> = ({
     const tempLegend: LegendItemType[] = [];
     const tempSeries: uPlotSeries[] = [{}];
 
-    data?.forEach((d) => {
+    data?.forEach((d, i) => {
-      const seriesItem = getSeriesItem(d, hideSeries, alias);
+      const seriesItem = getSeriesItem(d, i);
+
       tempSeries.push(seriesItem);
       tempLegend.push(getLegendItem(seriesItem, d.group));
       const tmpValues = tempValues[d.group] || [];
@@ -156,8 +161,8 @@ const GraphView: FC<GraphViewProps> = ({
   useEffect(() => {
     const tempLegend: LegendItemType[] = [];
     const tempSeries: uPlotSeries[] = [{}];
-    data?.forEach(d => {
+    data?.forEach((d, i) => {
-      const seriesItem = getSeriesItem(d, hideSeries, alias);
+      const seriesItem = getSeriesItem(d, i);
       tempSeries.push(seriesItem);
       tempLegend.push(getLegendItem(seriesItem, d.group));
     });
@@ -199,7 +204,7 @@ const GraphView: FC<GraphViewProps> = ({
           setPeriod={setPeriod}
           layoutSize={containerSize}
           height={height}
-          onChangeLegend={handleChangeLegend}
+          onChangeLegend={setLegendValue}
         />
       )}
       {!isHistogram && showLegend && (

app/vmui/packages/vmui/src/styles/components/table.scss

@@ -51,6 +51,7 @@
       font-weight: bold;
       text-transform: capitalize;
       text-align: left;
+      overflow-wrap: normal;
     }
 
     &_gray {

app/vmui/packages/vmui/src/utils/uplot/events.ts

@@ -17,7 +17,7 @@ export const dragChart = ({ e, factor = 0.85, u, setPanning, setPlotScale }: Dra
 
     const clientX = isMouseEvent ? e.clientX : e.touches[0].clientX;
     const dx = xUnitsPerPx * ((clientX - leftStart) * factor);
-    setPlotScale({ u, min: scXMin - dx, max: scXMax - dx });
+    setPlotScale({ min: scXMin - dx, max: scXMax - dx });
   };
   const mouseUp = () => {
     setPanning(false);

app/vmui/packages/vmui/src/utils/uplot/heatmap.ts

@@ -145,17 +145,22 @@ const sortBucketsByValues = (a: MetricResult, b: MetricResult) => getUpperBound(
 
 export const normalizeData = (buckets: MetricResult[], isHistogram?: boolean): MetricResult[] => {
   if (!isHistogram) return buckets;
+
   const sortedBuckets = buckets.sort(sortBucketsByValues);
   const vmBuckets = convertPrometheusToVictoriaMetrics(sortedBuckets);
-  const allValues = vmBuckets.map(b => b.values).flat();
+
+  // Compute total hits for each timestamp upfront
+  const totalHitsPerTimestamp: { [timestamp: number]: number } = {};
+  vmBuckets.forEach(bucket =>
+    bucket.values.forEach(([timestamp, value]) => {
+      totalHitsPerTimestamp[timestamp] = (totalHitsPerTimestamp[timestamp] || 0) + +value;
+    })
+  );
 
   const result = vmBuckets.map(bucket => {
-    const values = bucket.values.map((v) => {
+    const values = bucket.values.map(([timestamp, value]) => {
-      const totalHits = allValues
+      const totalHits = totalHitsPerTimestamp[timestamp];
-        .filter(av => av[0] === v[0])
+      return [timestamp, `${Math.round((+value / totalHits) * 100)}`];
-        .reduce((bucketSum, v) => bucketSum + +v[1], 0);
-
-      return [v[0], `${Math.round((+v[1] / totalHits) * 100)}`];
     });
 
     return { ...bucket, values };

app/vmui/packages/vmui/src/utils/uplot/scales.ts

@@ -0,0 +1,26 @@
+import uPlot, { Range, Scale, Scales } from "uplot";
+import { getMinMaxBuffer } from "./axes";
+import { YaxisState } from "../../state/graph/reducer";
+
+interface XRangeType {
+  min: number,
+  max: number
+}
+
+export const getRangeX = (xRange: XRangeType): Range.MinMax => {
+  return [xRange.min, xRange.max];
+};
+
+export const getRangeY = (u: uPlot, min = 0, max = 1, axis: string, yaxis: YaxisState): Range.MinMax => {
+  if (yaxis.limits.enable) return yaxis.limits.range[axis];
+  return getMinMaxBuffer(min, max);
+};
+
+export const getScales = (yaxis: YaxisState, xRange: XRangeType): Scales => {
+  const scales: { [key: string]: { range: Scale.Range } } = { x: { range: () => getRangeX(xRange) } };
+  const ranges = Object.keys(yaxis.limits.range);
+  (ranges.length ? ranges : ["1"]).forEach(axis => {
+    scales[axis] = { range: (u: uPlot, min = 0, max = 1) => getRangeY(u, min, max, axis, yaxis) };
+  });
+  return scales;
+};

app/vmui/packages/vmui/src/utils/uplot/series.ts

@@ -17,26 +17,34 @@ export interface SeriesItem extends Series {
   }
 }
 
-export const getSeriesItemContext = () => {
+export const getSeriesItemContext = (data: MetricResult[], hideSeries: string[], alias: string[]) => {
   const colorState: {[key: string]: string} = {};
-
+  const calculations = data.map(d => {
-  return (d: MetricResult, hideSeries: string[], alias: string[]): SeriesItem => {
-    const label = getNameForMetric(d, alias[d.group - 1]);
-    const countSavedColors = Object.keys(colorState).length;
-    const hasBasicColors = countSavedColors < baseContrastColors.length;
-    if (hasBasicColors) colorState[label] = colorState[label] || baseContrastColors[countSavedColors];
-
     const values = d.values.map(v => promValueToNumber(v[1]));
-    const min = getMinFromArray(values);
+    return {
-    const max = getMaxFromArray(values);
+      min: getMinFromArray(values),
-    const median = getMedianFromArray(values);
+      max: getMaxFromArray(values),
-    const last = getLastFromArray(values);
+      median: getMedianFromArray(values),
+      last: getLastFromArray(values),
+    };
+  });
+
+  const maxColors = Math.min(data.length, baseContrastColors.length);
+  for (let i = 0; i < maxColors; i++) {
+    const label = getNameForMetric(data[i], alias[data[i].group - 1]);
+    colorState[label] = baseContrastColors[i];
+  }
+
+  return (d: MetricResult, i: number): SeriesItem => {
+    const label = getNameForMetric(d, alias[d.group - 1]);
+    const color = colorState[label] || getColorFromString(label);
+    const { min, max, median, last } = calculations[i];
 
     return {
       label,
       freeFormFields: d.metric,
       width: 1.4,
-      stroke: colorState[label] || getColorFromString(label),
+      stroke: color,
       show: !includesHideSeries(label, hideSeries),
       scale: "1",
       points: {

app/vmui/packages/vmui/src/utils/uplot/types.ts

@@ -12,7 +12,7 @@ export interface DragArgs {
     u: uPlot,
     factor: number,
     setPanning: (enable: boolean) => void,
-    setPlotScale: ({ u, min, max }: { u: uPlot, min: number, max: number }) => void
+    setPlotScale: ({ min, max }: { min: number, max: number }) => void
 }
 
 export interface LegendItemType {

docs/CHANGELOG.md

@@ -42,6 +42,7 @@ The following tip changes can be tested by building VictoriaMetrics components f
 * BUGFIX: [vmagent](https://docs.victoriametrics.com/vmagent.html): fixed service name detection for [consulagent service discovery](https://docs.victoriametrics.com/sd_configs.html?highlight=consulagent#consulagent_sd_configs) in case of a difference in service name and service id. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4390) for details.
 * BUGFIX: [vmbackupmanager](https://docs.victoriametrics.com/vmbackupmanager.html): fix an issue with `vmbackupmanager` not being able to restore data from a backup stored in GCS. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4420) for details.
 * BUGFIX: [storage](https://docs.victoriametrics.com/Single-server-VictoriaMetrics.html): Properly creates `parts.json` after migration from versions below `v1.90.0. It must fix errors on start-up after unclean shutdown. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4336) for details.
+* BUGFIX: [vmui](https://docs.victoriametrics.com/#vmui): fix a memory leak issue associated with chart updates. See [this pull request](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/4455).
 
 ## [v1.91.2](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.91.2)