Added methods for SpanID and TraceID on bridgeSpanContext

bridge/opentracing/bridge.go

@@ -76,6 +76,14 @@ func (c *bridgeSpanContext) IsSampled() bool {
 	return c.otelSpanContext.IsSampled()
 }
 
+func (c *bridgeSpanContext) TraceID() trace.TraceID {
+	return c.otelSpanContext.TraceID()
+}
+
+func (c *bridgeSpanContext) SpanID() trace.SpanID {
+	return c.otelSpanContext.SpanID()
+}
+
 func (c *bridgeSpanContext) setBaggageItem(restrictedKey, value string) {
 	crk := http.CanonicalHeaderKey(restrictedKey)
 	m, err := baggage.NewMember(crk, value)

bridge/opentracing/bridge_test.go

@@ -546,3 +546,41 @@ func TestBridge_SpanContext_IsSampled(t *testing.T) {
 		})
 	}
 }
+
+func TestBridge_SpanContext_TraceID_SpanID(t *testing.T) {
+	bridge := NewBridgeTracer()
+	bridge.SetTextMapPropagator(new(testTextMapPropagator))
+
+	tmc := newTextCarrier()
+
+	testCases := []struct {
+		name    string
+		traceID trace.TraceID
+		spanID  trace.SpanID
+	}{
+		{
+			name:    "support for getting spanID and traceID",
+			traceID: [16]byte{byte(1)},
+			spanID:  [8]byte{byte(2)},
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			err := bridge.Inject(newBridgeSpanContext(trace.NewSpanContext(trace.SpanContextConfig{
+				TraceID: tc.traceID,
+				SpanID:  tc.spanID,
+			}), nil), ot.TextMap, tmc)
+			assert.NoError(t, err)
+
+			spanContext, err := bridge.Extract(ot.TextMap, tmc)
+			assert.NoError(t, err)
+
+			bsc, ok := spanContext.(*bridgeSpanContext)
+			assert.True(t, ok)
+
+			assert.Equal(t, spanID.String(), bsc.SpanID().String())
+			assert.Equal(t, traceID.String(), bsc.TraceID().String())
+		})
+	}
+}