[nodejs] modify baggage tests for nodejs + add associated nodejs endpoints

manifests/nodejs.yml

@@ -655,7 +655,7 @@ tests/:
       TestDynamicConfigV1_ServiceTargets: *ref_5_4_0
       TestDynamicConfigV2: *ref_4_23_0
     test_headers_baggage.py:
-      Test_Headers_Baggage: missing_feature
+      Test_Headers_Baggage: v5.25.0
     test_otel_api_interoperability.py: missing_feature
     test_otel_env_vars.py:
       Test_Otel_Env_Vars: v5.11.0 #implemented in v5.11.0, v4.35.0, &v3.56.0

tests/parametric/test_headers_baggage.py

@@ -54,7 +54,6 @@ def test_headers_baggage_only_D002(self, test_library):
         assert "x-datadog-trace-id" not in headers.keys()
         assert "x-datadog-parent-id" not in headers.keys()
         assert "baggage" in headers.keys()
-        assert len(headers.keys()) == 1
         assert headers["baggage"] == "foo=bar"
 
     @disable_baggage()

utils/build/docker/nodejs/parametric/server.js

@@ -20,6 +20,7 @@ const express = require('express');
 const app = express();
 app.use(express.json());
 
+let dummyIdIncrementer = 10000000
 
 function microLongToHrTime (timestamp) {
   if (timestamp === null) {
@@ -71,6 +72,17 @@ app.post('/trace/span/extract_headers', (req, res) => {
   const extracted = tracer.extract('http_headers', linkHeaders);
 
   let extractedSpanID = null;
+  const dummyTracer = require('dd-trace').init()
+  const extractPropagator = dummyTracer._tracer._config.tracePropagationStyle.extract
+
+  if (extractPropagator.includes('baggage') && extracted && !extracted._spanId && !extracted._traceId) {
+    // baggage propagation does not require ids so http_headers could contain no ids
+    // several endpoints in this file rely on having ids so we need to have dummy ids for internal use
+    extracted._spanId = dummyIdIncrementer
+    extracted._traceId = dummyIdIncrementer
+    dummyIdIncrementer += 1
+  }
+
   if (extracted && extracted._spanId) {
     extractedSpanID = extracted.toSpanId();
     ddContext[extractedSpanID] = extracted;
@@ -168,6 +180,41 @@ app.post('/trace/span/error', (req, res) => {
   res.json({});
 });
 
+app.post('/trace/span/set_baggage', (req, res) => {
+  const request = req.body;
+  const span = spans[request.span_id]
+  span.setBaggageItem(request.key, request.value)
+  res.json({});
+});
+
+app.get('/trace/span/get_baggage', (req, res) => {
+  const request = req.body;
+  const span = spans[request.span_id]
+  const baggage = span.getBaggageItem(request.key)
+  res.json({ baggage });
+});
+
+app.get('/trace/span/get_all_baggage', (req, res) => {
+const request = req.body;
+  const span = spans[request.span_id]
+  const baggage = span.getAllBaggageItems()
+  res.json({ baggage: JSON.parse(baggage) });
+});
+
+app.post('/trace/span/remove_baggage', (req, res) => {
+  const request = req.body;
+  const span = spans[request.span_id]
+  const baggages = span.removeBaggageItem(request.key)
+  res.json({});
+});
+
+app.post('/trace/span/remove_all_baggage', (req, res) => {
+  const request = req.body;
+  const span = spans[request.span_id]
+  const baggages = span.removeAllBaggageItems()
+  res.json({});
+});
+
 app.post('/trace/otel/start_span', (req, res) => {
   const request = req.body;
   const otelTracer = tracerProvider.getTracer()