Merge branch 'main' into grpc-exporter-env-headers

Author: dyladan

packages/opentelemetry-context-async-hooks/package.json

@@ -44,7 +44,7 @@
     "@types/mocha": "8.2.2",
     "@types/node": "14.14.43",
     "@types/shimmer": "1.0.1",
-    "codecov": "^3.8.2",
+    "codecov": "3.8.2",
     "mocha": "7.2.0",
     "nyc": "15.1.0",
     "rimraf": "3.0.2",

packages/opentelemetry-propagator-b3/src/B3Propagator.ts

@@ -61,7 +61,10 @@ export class B3Propagator implements TextMapPropagator {
   }
 
   extract(context: Context, carrier: unknown, getter: TextMapGetter): Context {
-    if (getter.get(carrier, B3_CONTEXT_HEADER)) {
+    const header = getter.get(carrier, B3_CONTEXT_HEADER);
+    const b3Context = Array.isArray(header) ? header[0] : header;
+
+    if (b3Context) {
       return this._b3SinglePropagator.extract(context, carrier, getter);
     } else {
       return this._b3MultiPropagator.extract(context, carrier, getter);

packages/opentelemetry-propagator-b3/test/B3Propagator.test.ts

@@ -152,6 +152,31 @@ describe('B3Propagator', () => {
       });
     });
 
+    it('extracts multi header b3 using array getter', () => {
+      const context = propagator.extract(
+        ROOT_CONTEXT,
+        b3MultiCarrier,
+        {
+          get(carrier, key) {
+            if (carrier == null || carrier[key] === undefined) {
+              return [];
+            }
+            return [carrier[key]];
+          },
+        
+          keys: defaultTextMapGetter.keys
+        }
+      );
+
+      const extractedSpanContext = trace.getSpanContext(context);
+      assert.deepStrictEqual(extractedSpanContext, {
+        spanId: '6e0c63257de34c92',
+        traceId: 'd4cda95b652f4a1592b449d5929fda1b',
+        isRemote: true,
+        traceFlags: TraceFlags.SAMPLED,
+      });
+    });
+
     it('extracts single header over multi', () => {
       const context = propagator.extract(
         ROOT_CONTEXT,

renovate.json

@@ -9,6 +9,11 @@
     {
       "matchPackageNames": ["@opentelemetry/api"],
       "rangeStrategy": "bump"
+    },
+    {
+      "matchPaths": ["backwards-compatibility/**"],
+      "matchPackageNames": ["@types/node"],
+      "enabled": false
     }
   ],
   "ignoreDeps": ["gcp-metadata", "got", "mocha", "husky", "karma-webpack"],