fix(aws-serverless): Add op to Otel-generated lambda function root span (#12430)

Add the `sentry.op` attribute/`op` property to the created root
span/transaction of a lambda function.

Author: Lms24

dev-packages/e2e-tests/test-applications/aws-lambda-layer-cjs/tests/basic.test.ts

@@ -30,10 +30,12 @@ test('Lambda layer SDK bundle sends events', async ({ request }) => {
       'sentry.sample_rate': 1,
       'sentry.source': 'custom',
       'sentry.origin': 'auto.otel.aws-lambda',
+      'sentry.op': 'function.aws.lambda',
       'cloud.account.id': '123453789012',
       'faas.id': 'arn:aws:lambda:us-east-1:123453789012:function:my-lambda',
       'otel.kind': 'SERVER',
     },
+    op: 'function.aws.lambda',
     origin: 'auto.otel.aws-lambda',
     span_id: expect.any(String),
     status: 'ok',

packages/aws-serverless/src/integration/awslambda.ts

@@ -1,5 +1,5 @@
 import { AwsLambdaInstrumentation } from '@opentelemetry/instrumentation-aws-lambda';
-import { SEMANTIC_ATTRIBUTE_SENTRY_ORIGIN, defineIntegration } from '@sentry/core';
+import { SEMANTIC_ATTRIBUTE_SENTRY_OP, SEMANTIC_ATTRIBUTE_SENTRY_ORIGIN, defineIntegration } from '@sentry/core';
 import { addOpenTelemetryInstrumentation } from '@sentry/node';
 import type { IntegrationFn } from '@sentry/types';
 
@@ -11,6 +11,7 @@ const _awsLambdaIntegration = (() => {
         new AwsLambdaInstrumentation({
           requestHook(span) {
             span.setAttribute(SEMANTIC_ATTRIBUTE_SENTRY_ORIGIN, 'auto.otel.aws-lambda');
+            span.setAttribute(SEMANTIC_ATTRIBUTE_SENTRY_OP, 'function.aws.lambda');
           },
         }),
       );