skywalking-booster-ui/src/views/dashboard/graphs/HeatMap.vue

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<template>
  <Graph :option="option" />
</template>
<script lang="ts" setup>
import { computed } from "vue";
import type { PropType } from "vue";
import { StandardConfig } from "@/types/dashboard";

/*global defineProps */
const props = defineProps({
  data: {
    type: Object as PropType<{ nodes: number[][]; buckets: number[][] }>,
    default: () => ({}),
  },
  intervalTime: { type: Array as PropType<string[]>, default: () => [] },
  config: {
    type: Object as PropType<any>,
    default: () => ({}),
  },
  standard: {
    type: Object as PropType<StandardConfig>,
    default: () => ({}),
  },
});
const option = computed(() => getOption());
function getOption() {
  const source = (props.data.nodes || []).map((d: number[]) => d[2]);
  const maxItem = Math.max(...source);
  const minItem = Math.min(...source);
  const colorBox = [
    "#fff",
    "#FDF0F0",
    "#FAE2E2",
    "#F8D3D3",
    "#F6C4C4",
    "#F4B5B5",
    "#F1A7A7",
    "#EF9898",
    "#E86C6C",
    "#E44E4E",
    "#E23F3F",
    "#DF3131",
    "#DD2222",
    "#CE2020",
    "#C01D1D",
    "#B11B1B",
    "#A21919",
    "#851414",
    "#761212",
    "#671010",
  ];
  return {
    tooltip: {
      position: "top",
      formatter: (a: any) =>
        `${a.data[1] * 100}${props.standard.unit}  [ ${a.data[2]} ]`,
      textStyle: {
        fontSize: 13,
        color: "#ccc",
      },
    },
    grid: {
      top: 15,
      left: 0,
      right: 10,
      bottom: 5,
      containLabel: true,
    },
    xAxis: {
      type: "category",
      data: props.intervalTime,
      axisTick: {
        lineStyle: { color: "#c1c5ca" },
        alignWithLabel: true,
      },
      splitLine: { show: false },
      axisLine: { lineStyle: { color: "rgba(0,0,0,0)" } },
      axisLabel: { color: "#9da5b2", fontSize: "11" },
    },
    visualMap: [
      {
        min: minItem,
        max: maxItem,
        show: false,
        type: "piecewise",
        calculable: true,
        pieces: generatePieces(maxItem, colorBox, minItem),
      },
    ],
    yAxis: {
      type: "category",
      axisLine: { show: false },
      axisTick: { show: false },
      splitLine: { lineStyle: { color: "#c1c5ca", type: "dashed" } },
      axisLabel: { color: "#9da5b2", fontSize: "11" },
      data: props.data.buckets,
    },
    series: [
      {
        type: "heatmap",
        data: props.data.nodes || [],
        emphasis: {
          itemStyle: {
            shadowBlur: 10,
            shadowColor: "rgba(0, 0, 0, 0.5)",
          },
        },
      },
    ],
  };
}
function generatePieces(maxValue: number, colorBox: string[], minItem: number) {
  if (maxValue < minItem) {
    return [];
  }
  const pieces = [];
  let quotient = 1;
  let temp = {} as { min: number; max: number; color: string };
  temp.max = minItem;
  temp.min = minItem;
  temp.color = colorBox[0];
  pieces.push(temp);
  if (maxValue && maxValue >= 19) {
    quotient = Math.floor(maxValue / 19);
    for (let i = 1; i < 20; i++) {
      temp = {} as any;
      if (i === 1) {
        temp.min = minItem;
      } else {
        temp.min = quotient * (i - 1);
      }
      temp.max = quotient * i;
      temp.color = colorBox[i];
      pieces.push(temp);
    }
  }
  const length = pieces.length;
  if (length) {
    const item = pieces[length - 1];
    item.max = maxValue;
  }
  return pieces;
}
</script>