complete performance and reliability follow-ups

packages/observability/src/integrations.ts

@@ -2,6 +2,7 @@ import type { MetricPoint } from "./metrics.ts";
 import type { LogRecord } from "./logging.ts";
 import type { MetricExporter } from "./server.ts";
 import type { SpanExporter, SpanRecord, TraceContext } from "./trace.ts";
+import { reportObservabilityFailure, type ObservabilityDiagnostic } from "./diagnostics.ts";
 
 export type FrameworkSpanKind =
   "database" | "cache" | "queue" | "realtime" | "server-action" | "application";
@@ -26,6 +27,7 @@ export function createOperationTracer(
     context?: () => Partial<TraceContext>;
     now?: () => number;
     onExportError?: (error: unknown) => void;
+    diagnostic?: ObservabilityDiagnostic;
   } = {},
 ): OperationTracer {
   const now = options.now ?? Date.now;
@@ -66,7 +68,9 @@ export function createOperationTracer(
         try {
           await options.exporter?.export([record]);
         } catch (error) {
-          options.onExportError?.(error);
+          if (options.onExportError) options.onExportError(error);
+          else
+            reportObservabilityFailure("operation span export failed", error, options.diagnostic);
         }
       }
     },