fix(instrumentation-net): make tls span parent of net span (open-tele…

…metry#1342) * fix(instrumentation-net): make tls span parent of net span * chore: lint fix
dynatrace-oss-contrib · Jan 15, 2023 · 1ee197e · 1ee197e
1 parent 714e6c1
commit 1ee197e
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Showing 4 changed files with 26 additions and 3 deletions.
diff --git a/plugins/node/opentelemetry-instrumentation-net/package.json b/plugins/node/opentelemetry-instrumentation-net/package.json
@@ -47,6 +47,7 @@
   },
   "devDependencies": {
     "@opentelemetry/api": "^1.3.0",
+    "@opentelemetry/context-async-hooks": "^1.8.0",
     "@opentelemetry/sdk-trace-base": "^1.8.0",
     "@opentelemetry/sdk-trace-node": "^1.8.0",
     "@types/mocha": "7.0.2",

diff --git a/plugins/node/opentelemetry-instrumentation-net/src/instrumentation.ts b/plugins/node/opentelemetry-instrumentation-net/src/instrumentation.ts
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import { diag, Span, SpanStatusCode } from '@opentelemetry/api';
+import { diag, Span, SpanStatusCode, context, trace } from '@opentelemetry/api';
 import {
   InstrumentationBase,
   InstrumentationConfig,
@@ -112,7 +112,12 @@ export class NetInstrumentation extends InstrumentationBase<Net> {
   ) {
     const tlsSpan = this.tracer.startSpan('tls.connect');
 
-    const netSpan = this._startSpan(options, socket);
+    const netSpan = context.with(
+      trace.setSpan(context.active(), tlsSpan),
+      () => {
+        return this._startSpan(options, socket);
+      }
+    );
 
     const otelTlsSpanListener = () => {
       const peerCertificate = socket.getPeerCertificate(true);

diff --git a/plugins/node/opentelemetry-instrumentation-net/test/tls.test.ts b/plugins/node/opentelemetry-instrumentation-net/test/tls.test.ts
@@ -14,12 +14,13 @@
  * limitations under the License.
  */
 
-import { SpanStatusCode } from '@opentelemetry/api';
+import { SpanStatusCode, context } from '@opentelemetry/api';
 import {
   InMemorySpanExporter,
   SimpleSpanProcessor,
 } from '@opentelemetry/sdk-trace-base';
 import { NodeTracerProvider } from '@opentelemetry/sdk-trace-node';
+import { AsyncHooksContextManager } from '@opentelemetry/context-async-hooks';
 import * as assert from 'assert';
 import * as tls from 'tls';
 import { NetInstrumentation } from '../src';
@@ -48,12 +49,16 @@ function getTLSSpans() {
 
 describe('NetInstrumentation', () => {
   let instrumentation: NetInstrumentation;
+  let contextManager: AsyncHooksContextManager;
+
   let tlsServer: tls.Server;
   let tlsSocket: tls.TLSSocket;
 
   before(() => {
     instrumentation = new NetInstrumentation();
     instrumentation.setTracerProvider(provider);
+    contextManager = new AsyncHooksContextManager().enable();
+    context.setGlobalContextManager(contextManager.enable());
     require('net');
   });
 

diff --git a/plugins/node/opentelemetry-instrumentation-net/test/utils.ts b/plugins/node/opentelemetry-instrumentation-net/test/utils.ts
@@ -58,6 +58,7 @@ export function assertTLSSpan(
   { netSpan, tlsSpan }: { netSpan: ReadableSpan; tlsSpan: ReadableSpan },
   socket: Socket
 ) {
+  assertParentChild(tlsSpan, netSpan);
   assertSpanKind(netSpan);
   assertAttrib(
     netSpan,
@@ -108,6 +109,17 @@ export function assertAttrib(span: ReadableSpan, attrib: string, value: any) {
   assert.strictEqual(span.attributes[attrib], value);
 }
 
+export function assertParentChild(
+  parentSpan: ReadableSpan,
+  childSpan: ReadableSpan
+) {
+  assert.strictEqual(
+    childSpan.spanContext().traceId,
+    parentSpan.spanContext().traceId
+  );
+  assert.strictEqual(childSpan.parentSpanId, parentSpan.spanContext().spanId);
+}
+
 export const TLS_SERVER_CERT = fs
   .readFileSync(path.resolve(__dirname, './fixtures/tls.crt'))
   .toString();