0.34.11

src/admin/web/app/chart-scales.js

@@ -1,5 +1,5 @@
-// Stable plot ranges: percentages are absolute 0-100; unbounded metrics have
-// unit-appropriate zero-based floors, expanding only for real higher readings.
+// Overview charts retain stable, expanding ranges (and fixed 0-100% axes).
+// Vhost request-rate sparklines use a separate, adaptive plotting policy.
 window.rustProxyChartScale = (() => {
     const floors = { rate: 100, count: 10, ms: 100, bytes: 64 * 1024 * 1024, "bytes/s": 64 * 1024 };
     const ceilings = new Map();
@@ -17,8 +17,28 @@ window.rustProxyChartScale = (() => {
         ceilings.set(key, result);
         return result;
     }
+    // Vhost live charts show the entire session history, but their Y range
+    // follows the recent typical rate. A one-off surge must not flatten the
+    // subsequent request activity; the real (unclipped) peak stays in the legend.
+    // The recent quantile also prevents a range that only grows over time.
+    function liveRate(values) {
+        const samples = (Array.isArray(values) ? values : []).map(value =>
+            typeof value === "number" && Number.isFinite(value) && value > 0 ? value : 0);
+        const maximum = Math.max(0, ...samples);
+        const recent = samples.slice(-24).sort((a, b) => a - b);
+        // Interpolation would allow a single extreme point to dominate small
+        // histories. Nearest lower rank excludes that isolated maximum.
+        const typical = recent.length ? recent[Math.floor((recent.length - 1) * 0.85)] : 0;
+        const scale = Math.max(1, typical * 1.25);
+        const points = samples.map((value, index) => {
+            const x = index * 320 / Math.max(1, samples.length - 1);
+            const y = 50 - Math.min(value / scale, 1) * 44;
+            return `${x},${y}`;
+        }).join(" ");
+        return { points, peak: maximum, scale, clipped: maximum > scale };
+    }
     function reset(prefix) {
         for (const key of ceilings.keys()) if (key.startsWith(prefix)) ceilings.delete(key);
     }
-    return { peak, reset };
+    return { peak, liveRate, reset };
 })();