feat: enhance the legend of metrics graph widget with the summary table (#181)

src/hooks/useLegendProcessor.ts

@@ -0,0 +1,142 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF 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 { LegendOptions } from "@/types/dashboard";
+import { isDef } from "@/utils/is";
+
+export default function useLegendProcess(legend?: LegendOptions) {
+  let isRight = false;
+  if (legend && legend.toTheRight) {
+    isRight = true;
+  }
+  function showEchartsLegend(keys: string[]) {
+    if (legend && isDef(legend.show)) {
+      if (legend.asTable && legend.show) {
+        return false;
+      }
+      return legend.show;
+    }
+    if (keys.length === 1) {
+      return false;
+    }
+    if (legend && legend.asTable) {
+      return false;
+    }
+    return true;
+  }
+  function aggregations(
+    data: { [key: string]: number[] },
+    intervalTime: string[]
+  ) {
+    const source: { [key: string]: unknown }[] = [];
+    const keys = Object.keys(data || {}).filter(
+      (i: any) => Array.isArray(data[i]) && data[i].length
+    );
+    const headers = [];
+
+    for (const [key, value] of keys.entries()) {
+      const arr = JSON.parse(JSON.stringify(data[value]));
+      const item: { [key: string]: unknown } = {
+        name: value,
+        topN: arr
+          .map((d: number, index: number) => {
+            return {
+              key: intervalTime[index],
+              value: d,
+            };
+          })
+          .sort(
+            (
+              a: { key: string; value: number },
+              b: { key: string; value: number }
+            ) => b.value - a.value
+          )
+          .filter((_: unknown, index: number) => index < 10),
+      };
+      if (legend) {
+        if (legend.min) {
+          item.min = Math.min(...data[value]).toFixed(2);
+          if (key === 0) {
+            headers.push({ value: "min", label: "Min" });
+          }
+        }
+        if (legend.max) {
+          item.max = Math.max(...data[value]).toFixed(2);
+          if (key === 0) {
+            headers.push({ value: "max", label: "Max" });
+          }
+        }
+        if (legend.mean) {
+          const total = data[value].reduce((prev: number, next: number) => {
+            prev += Number(next);
+            return prev;
+          }, 0);
+          item.mean = (total / data[value].length).toFixed(4);
+          if (key === 0) {
+            headers.push({ value: "mean", label: "Mean" });
+          }
+        }
+        if (legend.total) {
+          item.total = data[value]
+            .reduce((prev: number, next: number) => {
+              prev += Number(next);
+              return prev;
+            }, 0)
+            .toFixed(2);
+          if (key === 0) {
+            headers.push({ value: "total", label: "Total" });
+          }
+        }
+      }
+      source.push(item);
+    }
+
+    return { source, headers };
+  }
+  function chartColors(keys: string[]) {
+    let color: string[] = [];
+    switch (keys.length) {
+      case 2:
+        color = ["#FF6A84", "#a0b1e6"];
+        break;
+      case 1:
+        color = ["#3f96e3"];
+        break;
+      default:
+        color = [
+          "#30A4EB",
+          "#45BFC0",
+          "#FFCC55",
+          "#FF6A84",
+          "#a0a7e6",
+          "#c23531",
+          "#2f4554",
+          "#61a0a8",
+          "#d48265",
+          "#91c7ae",
+          "#749f83",
+          "#ca8622",
+          "#bda29a",
+          "#6e7074",
+          "#546570",
+          "#c4ccd3",
+        ];
+        break;
+    }
+    return color;
+  }
+  return { showEchartsLegend, isRight, aggregations, chartColors };
+}

src/hooks/useMetricsProcessor.ts

@@ -184,7 +184,7 @@ export function useSourceProcessor(
     const c = (config.metricConfig && config.metricConfig[index]) || {};
 
     if (type === MetricQueryTypes.ReadMetricsValues) {
-      source[m] =
+      source[c.label || m] =
         (resp.data[keys[index]] &&
           calculateExp(resp.data[keys[index]].values.values, c)) ||
         [];