RoyLee1224 commented on code in PR #55155:
URL: https://github.com/apache/airflow/pull/55155#discussion_r2316755103
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airflow-core/src/airflow/ui/src/pages/Dag/Calendar/calendarUtils.ts:
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@@ -219,6 +150,173 @@ export const generateHourlyCalendarData = (
return { days: monthData, month: monthStart.format("MMM YYYY") };
};
+export const calculateDataBounds = (
+ data: Array<CalendarTimeRangeResponse>,
+ viewMode: CalendarColorMode,
+ granularity: CalendarGranularity,
+): { maxCount: number; minCount: number } => {
+ if (data.length === 0) {
+ return { maxCount: 0, minCount: 0 };
+ }
+
+ const counts: Array<number> = [];
+ const mapCreator = granularity === "daily" ? createDailyDataMap :
createHourlyDataMap;
+ const dataMap = mapCreator(data);
+
+ dataMap.forEach((runs) => {
+ const runCounts = calculateRunCounts(runs);
+ const targetCount = viewMode === "total" ? runCounts.total :
runCounts.failed;
+
+ if (targetCount > 0) {
+ counts.push(targetCount);
+ }
+ });
+
+ if (counts.length === 0) {
+ return { maxCount: 0, minCount: 0 };
+ }
+
+ return {
+ maxCount: Math.max(...counts),
+ minCount: Math.min(...counts),
+ };
+};
+
+export const createCalendarScale = (
+ data: Array<CalendarTimeRangeResponse>,
+ viewMode: CalendarColorMode,
+ granularity: CalendarGranularity,
+): CalendarScale => {
+ const { maxCount, minCount } = calculateDataBounds(data, viewMode,
granularity);
+
+ // Handle empty data case
+ if (maxCount === 0) {
+ const emptyColor = { _dark: "gray.700", _light: "gray.100" };
+
+ return {
+ getColor: () => emptyColor,
+ legendItems: [{ color: emptyColor, label: "0" }],
+ type: "empty",
+ };
+ }
+
+ // Handle single value case
+ if (minCount === maxCount) {
+ const singleColor =
+ viewMode === "total"
+ ? { _dark: "green.500", _light: "green.400" }
+ : { _dark: "red.500", _light: "red.400" };
+
+ return {
+ getColor: (counts: RunCounts) => {
+ if (counts.planned > 0) {
+ return { _dark: "scheduled.600", _light: "scheduled.200" };
+ }
+ const targetCount = viewMode === "total" ? counts.total :
counts.failed;
+
+ return targetCount === 0 ? { _dark: "gray.700", _light: "gray.100" } :
singleColor;
+ },
+ legendItems: [
+ { color: { _dark: "gray.700", _light: "gray.100" }, label: "0" },
+ { color: singleColor, label: maxCount.toString() },
+ ],
+ type: "single_value",
+ };
+ }
+
+ // Handle gradient case - create dynamic thresholds
+ const range = maxCount - minCount;
+ const colorScheme =
+ viewMode === "total"
+ ? [
+ { _dark: "gray.700", _light: "gray.100" }, // 0
+ { _dark: "green.300", _light: "green.200" },
+ { _dark: "green.500", _light: "green.400" },
+ { _dark: "green.700", _light: "green.600" },
+ { _dark: "green.900", _light: "green.800" },
+ ]
+ : [
+ { _dark: "gray.700", _light: "gray.100" }, // 0
+ { _dark: "red.300", _light: "red.200" },
+ { _dark: "red.500", _light: "red.400" },
+ { _dark: "red.700", _light: "red.600" },
+ { _dark: "red.900", _light: "red.800" },
+ ];
+
+ const thresholds = [
+ 0,
+ Math.max(1, Math.ceil(minCount + range * 0.25)),
+ Math.max(2, Math.ceil(minCount + range * 0.5)),
+ Math.max(3, Math.ceil(minCount + range * 0.75)),
+ maxCount,
+ ];
+
+ const uniqueThresholds = [...new Set(thresholds)].sort((first, second) =>
first - second);
+
+ const getColor = (counts: RunCounts): string | { _dark: string; _light:
string } => {
+ if (counts.planned > 0) {
+ return { _dark: "scheduled.600", _light: "scheduled.200" };
+ }
+
+ const targetCount = viewMode === "total" ? counts.total : counts.failed;
+
+ if (targetCount === 0) {
+ return colorScheme[0] ?? { _dark: "gray.700", _light: "gray.100" };
+ }
+
+ for (let index = uniqueThresholds.length - 1; index >= 1; index -= 1) {
+ const threshold = uniqueThresholds[index];
Review Comment:
Since this loop needs to run in reverse and exit early with a `return`, I
guess the classic `for` loop is the best fit here.
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