Merge pull request #39 from browser-use/feat/laminar-parent-span-context-env

feat(bcode-laminar): wire LMNR_PARENT_SPAN_CONTEXT env (re-land plugin on main)

Author: Alezander9

bun.lock

@@ -12,7 +12,7 @@
     "dev:console": "ulimit -n 10240 2>/dev/null; bun run --cwd packages/console/app dev",
     "dev:storybook": "bun --cwd packages/storybook storybook",
     "lint": "oxlint",
-    "typecheck": "bun turbo typecheck --filter='@browser-use/browsercode-core...' --filter='@browser-use/bcode-browser'",
+    "typecheck": "bun turbo typecheck --filter='@browser-use/browsercode-core...' --filter='@browser-use/bcode-browser' --filter='@browser-use/bcode-laminar'",
     "postinstall": "bun run --cwd packages/opencode fix-node-pty",
     "prepare": "husky",
     "random": "echo 'Random script'",

package.json

@@ -14,12 +14,20 @@
 //     wins; explicit empty string is respected as "no key please"), AND
 //   - the embedded default is non-empty.
 //
-// `applyTelemetryKey()` is invoked as a side effect on module import (last
-// statement of this file). Because `packages/opencode/src/index.ts` imports
-// this module before any other module that might consume the env var, the
-// gate is guaranteed to run before any downstream module-load code can
-// observe `LMNR_PROJECT_API_KEY` — sidestepping ESM static-import hoisting
-// entirely.
+// No `if (telemetryEnabled)` branches downstream — `@browser-use/bcode-laminar`
+// reads `LMNR_PROJECT_API_KEY` and initializes only when present, so the gate
+// here decides everything.
+//
+// `applyTelemetryKey()` is invoked as a side effect on module import (bottom
+// of this file). `packages/opencode/src/index.ts` imports this module before
+// any other import; ESM evaluates an imported module's side effects before
+// continuing to the next import, so the gate is unambiguously ordered before
+// any downstream module-load code that might read `LMNR_PROJECT_API_KEY` —
+// sidestepping the static-import hoisting concern.
+
+import { mkdirSync } from "fs"
+import { homedir } from "os"
+import { dirname, join } from "path"
 
 declare const BCODE_DEFAULT_LMNR_KEY: string
 
@@ -34,6 +42,35 @@ export const applyTelemetryKey = () => {
   // undeclared and a direct read throws ReferenceError.
   if (typeof BCODE_DEFAULT_LMNR_KEY === "undefined" || !BCODE_DEFAULT_LMNR_KEY) return
   process.env.LMNR_PROJECT_API_KEY = BCODE_DEFAULT_LMNR_KEY
+  showFirstRunNoticeOnce()
+}
+
+// Industry-standard short notice: one line stating what happens and how to
+// opt out. Prints once; subsequent launches stay quiet.
+//
+// Uses XDG_STATE_HOME / ~/.local/state on Linux, %LOCALAPPDATA% on Windows,
+// ~/Library/Application Support on macOS. Resolved without importing
+// @opencode-ai/core/global since this runs before that module loads.
+const showFirstRunNoticeOnce = () => {
+  const marker = join(stateDir(), "bcode", "telemetry-notice-shown")
+  if (Bun.file(marker).size > 0) return
+  process.stderr.write(
+    "BrowserCode sends anonymous usage traces. Set DO_NOT_TRACK=1 to opt out.\n",
+  )
+  try {
+    mkdirSync(dirname(marker), { recursive: true })
+  } catch {}
+  Bun.write(marker, "1\n").catch(() => {})
+}
+
+const stateDir = () => {
+  if (process.platform === "win32") {
+    return process.env.LOCALAPPDATA ?? join(homedir(), "AppData", "Local")
+  }
+  if (process.platform === "darwin") {
+    return join(homedir(), "Library", "Application Support")
+  }
+  return process.env.XDG_STATE_HOME ?? join(homedir(), ".local", "state")
 }
 
 // Run as an import side effect: this module is imported as the very first

packages/bcode-browser/src/telemetry.ts

@@ -0,0 +1,75 @@
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packages/bcode-laminar/LICENSE

@@ -0,0 +1,56 @@
+# Vendor record — @browser-use/bcode-laminar
+
+This package is a vendored, trimmed combination of two upstream sources, both
+licensed Apache-2.0. Pulled once on **2026-05-02**; we do not maintain a
+recurring sync — Laminar's plugin shape changes rarely, and the OpenTelemetry
+contract is stable. Re-pull only when a behavior fix or new attribute is
+worth chasing.
+
+## Sources
+
+| Upstream | Commit | License |
+|---|---|---|
+| [`lmnr-ai/lmnr-opencode-plugin`](https://github.com/lmnr-ai/lmnr-opencode-plugin) | `bb2fceaff0d2b52161fb1c8a477a50b0b4789a0e` (v0.1.2) | Apache-2.0 |
+| [`lmnr-ai/lmnr-ts`](https://github.com/lmnr-ai/lmnr-ts) (selected files from `packages/lmnr/src/opentelemetry-lib/`) | `5ebe07a6284ce0bbfebcf10bdd9d1faa04ed6c64` (v0.8.22) | Apache-2.0 |
+
+## File mapping
+
+| `src/<file>.ts` | Upstream origin |
+|---|---|
+| `plugin.ts` | `lmnr-opencode-plugin/src/index.ts` |
+| `processor.ts` | merged: `lmnr-opencode-plugin/src/processor.ts` + base class from `lmnr-ts/.../tracing/processor.ts` |
+| `exporter.ts` | `lmnr-ts/.../tracing/exporter.ts` |
+| `span.ts` | `Laminar.startSpan` extracted from `lmnr-ts/src/laminar.ts` |
+| `attributes.ts` | `lmnr-ts/.../tracing/attributes.ts` (subset) |
+| `compat.ts` | `lmnr-ts/.../tracing/compat.ts` |
+| `state.ts` | `lmnr-opencode-plugin/src/state.ts` (dropped `sessionExternalContexts` — TS host injection isn't relevant for bcode) |
+| `utils.ts` | UUID helpers from `lmnr-ts/src/utils.ts` |
+
+## Behavior trims (vs upstream)
+
+- **No `LaminarClient` "rollout sessions"** — `LMNR_ROLLOUT_SESSION_ID` branch removed. We don't use that feature.
+- **No HTTP/protobuf exporter fallback** — gRPC only. Drops `@opentelemetry/exporter-trace-otlp-proto`.
+- **No `parseOtelHeaders` / `OTEL_HEADERS` resolution** — we always have a Laminar API key when emitting; OTel-env paths are dead.
+- **No `pino` logger** — log via `client.app.log` (opencode-managed).
+- **No `loadEnv()`** — opencode loads `.env` already; second pass would surprise users.
+- **No caller-side context injection (`sessionExternalContexts`)** — bcode runs the agent locally, not driven by an external TS host.
+- **`Laminar.startSpan` reduced** — only the path needed for the per-turn span (sessionId + optional parentSpanContext); no `tracingLevel`, masked-input, or process-global activation stack.
+
+## Behavior preserved
+
+- `lmnr.span.path` / `lmnr.span.ids_path` ancestor stamping (Laminar UI nests by these, not by OTel parentSpanId).
+- OTel SDK v1/v2 compat shim (`makeSpanOtelV2Compatible`).
+- Per-`chat.message` "turn" span lifecycle, ended on `session.idle` / `session.deleted`.
+- Sub-agent tagging: spans created inside the `task` tool tag descendants with `lmnr.spawning_subagent.tool_use_id`.
+- gRPC bearer-token auth to `${LMNR_BASE_URL}:${LMNR_GRPC_PORT}`.
+
+## Maintenance protocol
+
+If/when we re-pull:
+
+1. Clone both upstreams at the new tag.
+2. Diff each vendored file against its origin; bring across only behavior changes (not stylistic / build / dep churn).
+3. Update the commit hashes above; bump `version` in `package.json` only if behavior changed.
+4. Re-verify the smoke flow (see PR description).
+
+Do not introduce a `dependencies` entry on `@lmnr-ai/lmnr` or `@lmnr-ai/opencode-plugin` — vendoring is the point.

packages/bcode-laminar/VENDOR.md

@@ -0,0 +1,29 @@
+{
+  "$schema": "https://json.schemastore.org/package.json",
+  "version": "0.0.0",
+  "name": "@browser-use/bcode-laminar",
+  "description": "Vendored Laminar OpenCode tracing plugin (Apache-2.0)",
+  "type": "module",
+  "license": "Apache-2.0",
+  "private": true,
+  "scripts": {
+    "typecheck": "tsgo --noEmit"
+  },
+  "exports": {
+    ".": "./src/index.ts",
+    "./*": "./src/*.ts"
+  },
+  "dependencies": {
+    "@opencode-ai/plugin": "workspace:*",
+    "@opentelemetry/api": "1.9.0",
+    "@opentelemetry/sdk-node": "0.214.0",
+    "@opentelemetry/sdk-trace-base": "2.6.1",
+    "@opentelemetry/core": "2.6.1",
+    "@opentelemetry/exporter-trace-otlp-grpc": "0.214.0",
+    "@grpc/grpc-js": "1.14.3"
+  },
+  "devDependencies": {
+    "@tsconfig/bun": "catalog:",
+    "@types/bun": "catalog:"
+  }
+}

packages/bcode-laminar/package.json

@@ -0,0 +1,13 @@
+// Vendored from lmnr-ts/packages/lmnr/src/opentelemetry-lib/tracing/attributes.ts
+// Trimmed to the constants the OpenCode plugin actually uses.
+
+export const SPAN_TYPE = "lmnr.span.type"
+export const SPAN_INPUT = "lmnr.span.input"
+export const SPAN_PATH = "lmnr.span.path"
+export const SPAN_IDS_PATH = "lmnr.span.ids_path"
+export const PARENT_SPAN_PATH = "lmnr.span.parent_path"
+export const PARENT_SPAN_IDS_PATH = "lmnr.span.parent_ids_path"
+export const SPAN_INSTRUMENTATION_SOURCE = "lmnr.span.instrumentation_source"
+export const SPAN_SDK_VERSION = "lmnr.span.sdk_version"
+export const ASSOCIATION_PROPERTIES = "lmnr.association.properties"
+export const SESSION_ID = "lmnr.association.properties.session_id"