feat: add diagnostics events and otel exporter

2026-01-20 18:56:10 +00:00
parent b1f086b536
commit 5c4079f66c
14 changed files with 1030 additions and 13 deletions
--- a/src/infra/diagnostic-events.test.ts
+++ b/src/infra/diagnostic-events.test.ts
@@ -0,0 +1,28 @@
+import { describe, expect, test } from "vitest";
+
+import {
+  emitDiagnosticEvent,
+  onDiagnosticEvent,
+  resetDiagnosticEventsForTest,
+} from "./diagnostic-events.js";
+
+describe("diagnostic-events", () => {
+  test("emits monotonic seq", async () => {
+    resetDiagnosticEventsForTest();
+    const seqs: number[] = [];
+    const stop = onDiagnosticEvent((evt) => seqs.push(evt.seq));
+
+    emitDiagnosticEvent({
+      type: "model.usage",
+      usage: { total: 1 },
+    });
+    emitDiagnosticEvent({
+      type: "model.usage",
+      usage: { total: 2 },
+    });
+
+    stop();
+
+    expect(seqs).toEqual([1, 2]);
+  });
+});