more otel

otel-ui/src/lib/timeUtils.ts

@@ -0,0 +1,25 @@
+export function formatDuration(nano: number): string {
+  if (nano >= 3600000000000) { // 1 hour in nanoseconds
+    return `${(nano / 3600000000000).toFixed(1)}h`;
+  } else if (nano >= 60000000000) { // 1 minute
+    return `${(nano / 60000000000).toFixed(1)}m`;
+  } else if (nano >= 1000000000) { // 1 second
+    return `${(nano / 1000000000).toFixed(1)}s`;
+  } else if (nano >= 1000000) { // 1 millisecond
+    return `${(nano / 1000000).toFixed(1)}ms`;
+  } else if (nano >= 1000) { // 1 microsecond
+    return `${(nano / 1000).toFixed(1)}μs`;
+  } else {
+    return `${nano.toFixed(1)}ns`;
+  }
+}
+
+/** "just now", "2m ago", "3h ago", "5d ago" */
+export function formatRelativeTime(msEpoch: number): string {
+  const seconds = Math.max(0, (Date.now() - msEpoch) / 1000);
+  if (seconds < 60) return "just now";
+  if (seconds < 3600) return `${Math.floor(seconds / 60)}m ago`;
+  if (seconds < 86400) return `${Math.floor(seconds / 3600)}h ago`;
+  return `${Math.floor(seconds / 86400)}d ago`;
+}
+