From 594a99817cbe44553b2c288578fbba8e1e9c1907 Mon Sep 17 00:00:00 2001
From: Luca Casonato <hello@lcas.dev>
Date: Tue, 19 Nov 2024 00:55:22 +0100
Subject: feat(runtime): remove public OTEL trace API (#26854)

This PR removes the public Deno.tracing.Span API.
We are not confident we can ship an API that is
better than the `@opentelemetry/api` API, because
V8 CPED does not support us using `using` to
manage span context. If this changes, we can
revisit this decision. For now, users wanting
custom spans can instrument their code using
the `@opentelemetry/api` API and `@deno/otel`.

This PR also speeds up the OTEL trace generation
by a 30% by using Uint8Array instead of
strings for the trace ID and span ID.
---
 tests/registry/jsr/@deno/otel/0.0.2/deno.json      | 14 ++++++++
 tests/registry/jsr/@deno/otel/0.0.2/src/index.ts   | 38 ++++++++++++++++++++++
 .../registry/jsr/@deno/otel/0.0.2/src/register.ts  |  5 +++
 tests/registry/jsr/@deno/otel/0.0.2_meta.json      |  6 ++++
 tests/registry/jsr/@deno/otel/meta.json            |  8 +++++
 5 files changed, 71 insertions(+)
 create mode 100644 tests/registry/jsr/@deno/otel/0.0.2/deno.json
 create mode 100644 tests/registry/jsr/@deno/otel/0.0.2/src/index.ts
 create mode 100644 tests/registry/jsr/@deno/otel/0.0.2/src/register.ts
 create mode 100644 tests/registry/jsr/@deno/otel/0.0.2_meta.json
 create mode 100644 tests/registry/jsr/@deno/otel/meta.json

(limited to 'tests/registry/jsr/@deno')

diff --git a/tests/registry/jsr/@deno/otel/0.0.2/deno.json b/tests/registry/jsr/@deno/otel/0.0.2/deno.json
new file mode 100644
index 000000000..cfa44a7d0
--- /dev/null
+++ b/tests/registry/jsr/@deno/otel/0.0.2/deno.json
@@ -0,0 +1,14 @@
+{
+  "name": "@deno/otel",
+  "version": "0.0.2",
+  "exports": {
+    ".": "./src/index.ts",
+    "./register": "./src/register.ts"
+  },
+  "tasks": {
+    "check:license": "deno run -A tools/check_license.ts",
+    "check:docs": "deno doc --lint src/index.ts",
+    "check": "deno task check:license --check",
+    "ok": "deno fmt --check && deno lint && deno task check"
+  }
+}
diff --git a/tests/registry/jsr/@deno/otel/0.0.2/src/index.ts b/tests/registry/jsr/@deno/otel/0.0.2/src/index.ts
new file mode 100644
index 000000000..9c4445783
--- /dev/null
+++ b/tests/registry/jsr/@deno/otel/0.0.2/src/index.ts
@@ -0,0 +1,38 @@
+// Copyright 2024-2024 the Deno authors. All rights reserved. MIT license.
+
+import { context } from "npm:@opentelemetry/api@1";
+import {
+  BasicTracerProvider,
+  SimpleSpanProcessor,
+} from "npm:@opentelemetry/sdk-trace-base@1";
+
+// @ts-ignore Deno.telemetry is not typed yet
+const telemetry = Deno.telemetry ?? Deno.tracing;
+
+let COUNTER = 1;
+
+/**
+ * Register `Deno.telemetry` with the OpenTelemetry library.
+ */
+export function register() {
+  context.setGlobalContextManager(
+    new telemetry.ContextManager() ?? telemetry.ContextManager(),
+  );
+
+  const provider = new BasicTracerProvider({
+    idGenerator: Deno.env.get("DENO_UNSTABLE_OTEL_DETERMINISTIC") === "1" ? {
+      generateSpanId() {
+        return "1" + String(COUNTER++).padStart(15, "0");
+      },
+      generateTraceId() {
+        return "1" + String(COUNTER++).padStart(31, "0");
+      }
+    } : undefined
+  });
+
+  // @ts-ignore Deno.tracing is not typed yet
+  const exporter = new telemetry.SpanExporter();
+  provider.addSpanProcessor(new SimpleSpanProcessor(exporter));
+
+  provider.register();
+}
diff --git a/tests/registry/jsr/@deno/otel/0.0.2/src/register.ts b/tests/registry/jsr/@deno/otel/0.0.2/src/register.ts
new file mode 100644
index 000000000..544370707
--- /dev/null
+++ b/tests/registry/jsr/@deno/otel/0.0.2/src/register.ts
@@ -0,0 +1,5 @@
+// Copyright 2024-2024 the Deno authors. All rights reserved. MIT license.
+
+import { register } from "./index.ts";
+
+register();
diff --git a/tests/registry/jsr/@deno/otel/0.0.2_meta.json b/tests/registry/jsr/@deno/otel/0.0.2_meta.json
new file mode 100644
index 000000000..79c28d61d
--- /dev/null
+++ b/tests/registry/jsr/@deno/otel/0.0.2_meta.json
@@ -0,0 +1,6 @@
+{
+  "exports": {
+    ".": "./src/index.ts",
+    "./register": "./src/register.ts"
+  }
+}
\ No newline at end of file
diff --git a/tests/registry/jsr/@deno/otel/meta.json b/tests/registry/jsr/@deno/otel/meta.json
new file mode 100644
index 000000000..1cb49741a
--- /dev/null
+++ b/tests/registry/jsr/@deno/otel/meta.json
@@ -0,0 +1,8 @@
+{
+  "scope": "deno",
+  "name": "otel",
+  "latest": "0.0.2",
+  "versions": {
+    "0.0.2": {}
+  }
+}
\ No newline at end of file
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