Add A365 Exporter

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Release History
 
+## [0.1.0-alpha.2] - Unreleased
+
+### Features Added
+- Add A365 Exporter. ([#15](https://github.com/microsoft/opentelemetry-distro-javascript/pull/15))
+
 ## [0.1.0-alpha.1] - 2026-04-10
 
 ### Features Added
@@ -8,7 +13,7 @@
 - Modular setup architecture with extension points for OTLP and A365.
 - Migrated `@azure/monitor-opentelemetry` distro code in-repo for direct iteration.
 - Microsoft OpenTelemetry distro rebranding and configuration support.
-- Add langchain isntrumentation.([#10](https://github.com/microsoft/opentelemetry-distro-javascript/pull/10))
+- Add langchain instrumentation. ([#10](https://github.com/microsoft/opentelemetry-distro-javascript/pull/10))
 
 ### Other Changes
 - Initial project scaffolding with TypeScript, ESLint, and Vitest.

src/_a365/exporter/utils.ts → src/a365/exporter/utils.ts

@@ -6,15 +6,18 @@ import { SpanKind, SpanStatusCode } from "@opentelemetry/api";
 import type { ClusterCategory } from "../configuration/A365ConfigurationOptions.js";
 import { Logger } from "../../shared/logging/index.js";
 import { ExporterEventNames } from "./ExporterEventNames.js";
-
-// Attribute keys for identity partitioning (from Agent365 OpenTelemetryConstants)
-const TENANT_ID_KEY = "microsoft.tenant.id";
-const GEN_AI_AGENT_ID_KEY = "gen_ai.agent.id";
+import {
+  ATTR_GEN_AI_AGENT_ID,
+  ATTR_GEN_AI_INPUT_MESSAGES,
+  ATTR_GEN_AI_OUTPUT_MESSAGES,
+  ATTR_MICROSOFT_TENANT_ID,
+} from "../../genai/semconv.js";
 
 // Message attribute keys that receive special truncation handling
-const GEN_AI_INPUT_MESSAGES_KEY = "gen_ai.input.messages";
-const GEN_AI_OUTPUT_MESSAGES_KEY = "gen_ai.output.messages";
-const MESSAGE_ATTR_KEYS = new Set([GEN_AI_INPUT_MESSAGES_KEY, GEN_AI_OUTPUT_MESSAGES_KEY]);
+const MESSAGE_ATTR_KEYS: Set<string> = new Set([
+  ATTR_GEN_AI_INPUT_MESSAGES,
+  ATTR_GEN_AI_OUTPUT_MESSAGES,
+]);
 
 // A365 message schema version used in overflow sentinels
 const A365_MESSAGE_SCHEMA_VERSION = "1.0";
@@ -30,8 +33,8 @@ export function partitionByIdentity(spans: ReadableSpan[]): Map<string, Readable
 
   for (const span of spans) {
     const attrs = span.attributes || {};
-    const tenant = asStr(attrs[TENANT_ID_KEY]);
-    const agent = asStr(attrs[GEN_AI_AGENT_ID_KEY]);
+    const tenant = asStr(attrs[ATTR_MICROSOFT_TENANT_ID]);
+    const agent = asStr(attrs[ATTR_GEN_AI_AGENT_ID]);
 
     if (!tenant || !agent) {
       skippedCount++;

src/distro/types.ts

@@ -10,7 +10,7 @@ import type {
   InstrumentationOptions,
   BrowserSdkLoaderOptions,
 } from "../types.js";
-import type { A365Options } from "../_a365/index.js";
+import type { A365Options } from "../a365/index.js";
 
 export type { InstrumentationOptions, BrowserSdkLoaderOptions, A365Options };
 

src/genai/semconv.ts

@@ -49,3 +49,4 @@ export const ATTR_GEN_AI_TOOL_TYPE = "gen_ai.tool.type" as const;
 
 // Microsoft-specific (not in OTel semconv)
 export const ATTR_MICROSOFT_SESSION_ID = "microsoft.session.id" as const;
+export const ATTR_MICROSOFT_TENANT_ID = "microsoft.tenant.id" as const;

src/genai/utils.ts

@@ -5,14 +5,14 @@
 // separate truncation mechanisms vendored from A365:
 //   1. truncateValue() here — 8,192 char limit on individual span attribute values,
 //      used by GenAI instrumentations (LangChain, OpenAI) before setting attributes.
-//   2. truncateSpan() in _a365/exporter/utils.ts — 250KB limit on entire serialized
+//   2. truncateSpan() in a365/exporter/utils.ts — 250KB limit on entire serialized
 //      spans, used by Agent365Exporter before posting to the A365 service.
 // These serve different purposes (attribute-level vs span-level) and target
 // different exporter backends. Need to determine:
 //   - What truncation Azure Monitor exporter expects/handles natively
 //   - What truncation OTLP exporter expects/handles natively
 //   - Whether attribute-level truncation should live in a shared location or
-//     remain exporter-specific under _a365/
+//     remain exporter-specific under a365/
 // For now, keeping this here since GenAI instrumentations need it regardless
 // of which exporter is active.
 

src/index.ts

@@ -20,8 +20,8 @@ export type {
 } from "./distro/index.js";
 
 // ── Re-exports from A365 configuration ──────────────────────────────────────
-export { A365Configuration } from "./_a365/index.js";
-export type { ClusterCategory, A365BaggageOptions, A365HostingOptions } from "./_a365/index.js";
+export { A365Configuration } from "./a365/index.js";
+export type { ClusterCategory, A365BaggageOptions, A365HostingOptions } from "./a365/index.js";
 
 // ── Re-exports from types ───────────────────────────────────────────────────
 export type { OpenAIAgentsInstrumentationConfig, LangChainInstrumentationConfig } from "./types.js";

src/shared/jsonConfig.ts

@@ -8,7 +8,7 @@ import type {
   BrowserSdkLoaderOptions,
   InstrumentationOptions,
 } from "../types.js";
-import type { A365Options } from "../_a365/index.js";
+import type { A365Options } from "../a365/index.js";
 import type { AzureMonitorExporterOptions } from "@azure/monitor-opentelemetry-exporter";
 import type { MicrosoftOpenTelemetryOptions } from "../distro/types.js";
 import { Logger } from "./logging/index.js";

test/internal/unit/a365/a365Configuration.test.ts

@@ -5,7 +5,7 @@ import { afterEach, assert, beforeEach, describe, it, vi } from "vitest";
 import {
   A365Configuration,
   A365_ENV_VARS,
-} from "../../../../src/_a365/configuration/A365Configuration.js";
+} from "../../../../src/a365/configuration/A365Configuration.js";
 import { JsonConfig } from "../../../../src/shared/jsonConfig.js";
 
 describe("A365Configuration", () => {

test/internal/unit/a365/agent365Exporter.test.ts

@@ -5,7 +5,7 @@ import { afterEach, assert, beforeEach, describe, it, vi } from "vitest";
 import { ExportResultCode } from "@opentelemetry/core";
 import { SpanKind, SpanStatusCode, TraceFlags } from "@opentelemetry/api";
 import type { ReadableSpan } from "@opentelemetry/sdk-trace-base";
-import { Agent365Exporter } from "../../../../src/_a365/exporter/Agent365Exporter.js";
+import { Agent365Exporter } from "../../../../src/a365/exporter/Agent365Exporter.js";
 import {
   partitionByIdentity,
   parseIdentityKey,
@@ -16,8 +16,8 @@ import {
   resolveAgent365Endpoint,
   truncateSpan,
   MAX_SPAN_SIZE_BYTES,
-} from "../../../../src/_a365/exporter/utils.js";
-import { ResolvedExporterOptions } from "../../../../src/_a365/exporter/Agent365ExporterOptions.js";
+} from "../../../../src/a365/exporter/utils.js";
+import { ResolvedExporterOptions } from "../../../../src/a365/exporter/Agent365ExporterOptions.js";
 
 function makeSpan(overrides: Partial<ReadableSpan> = {}): ReadableSpan {
   return {