[AgentObservability] Update resource attributes handling

aws-distro-opentelemetry-node-autoinstrumentation/src/aws-attribute-keys.ts

@@ -4,7 +4,7 @@
 import { SEMATTRS_AWS_DYNAMODB_TABLE_NAMES } from '@opentelemetry/semantic-conventions';
 
 // Utility class holding attribute keys with special meaning to AWS components
-export const AWS_ATTRIBUTE_KEYS: { [key: string]: string } = {
+export const AWS_ATTRIBUTE_KEYS = {
   AWS_SPAN_KIND: 'aws.span.kind',
   AWS_LOCAL_SERVICE: 'aws.local.service',
   AWS_LOCAL_OPERATION: 'aws.local.operation',
@@ -45,4 +45,5 @@ export const AWS_ATTRIBUTE_KEYS: { [key: string]: string } = {
   AWS_LAMBDA_FUNCTION_NAME: 'aws.lambda.function.name',
   AWS_LAMBDA_RESOURCE_MAPPING_ID: 'aws.lambda.resource_mapping.id',
   AWS_LAMBDA_FUNCTION_ARN: 'aws.lambda.function.arn',
+  AWS_SERVICE_TYPE: 'aws.service.type',
 };

aws-distro-opentelemetry-node-autoinstrumentation/src/aws-opentelemetry-configurator.ts

@@ -64,6 +64,7 @@ import { LIB_VERSION } from './version';
 import { isAgentObservabilityEnabled } from './utils';
 import { BaggageSpanProcessor } from '@opentelemetry/baggage-span-processor';
 import { logs } from '@opentelemetry/api-logs';
+import { AWS_ATTRIBUTE_KEYS } from './aws-attribute-keys';
 
 const XRAY_OTLP_ENDPOINT_PATTERN = '^https://xray\\.([a-z0-9-]+)\\.amazonaws\\.com/v1/traces$';
 
@@ -139,8 +140,8 @@ export class AwsOpentelemetryConfigurator {
       if (!resourceDetectorsFromEnv.includes('env')) {
         defaultDetectors.push(envDetectorSync);
       }
-    } else if (isLambdaEnvironment()) {
-      // If in Lambda environment, only keep env detector as default
+    } else if (isLambdaEnvironment() || isAgentObservabilityEnabled()) {
+      // Only keep env detector here
       defaultDetectors.push(envDetectorSync);
     } else {
       /*
@@ -164,7 +165,7 @@ export class AwsOpentelemetryConfigurator {
       detectors: defaultDetectors,
     };
 
-    autoResource = autoResource.merge(detectResourcesSync(internalConfig));
+    autoResource = this.customizeResource(autoResource.merge(detectResourcesSync(internalConfig)));
     this.resource = autoResource;
 
     this.instrumentations = instrumentations;
@@ -195,6 +196,17 @@ export class AwsOpentelemetryConfigurator {
     return autoResource;
   }
 
+  private customizeResource(resource: Resource) {
+    if (isAgentObservabilityEnabled()) {
+      // Add aws.service.type if it doesn't exist in the resource
+      if (!resource.attributes[AWS_ATTRIBUTE_KEYS.AWS_SERVICE_TYPE]) {
+        // Set a default agent type for AI agent observability
+        resource.attributes[AWS_ATTRIBUTE_KEYS.AWS_SERVICE_TYPE] = 'gen_ai_agent';
+      }
+    }
+    return resource;
+  }
+
   public configure(): Partial<NodeSDKConfiguration> {
     // config.autoDetectResources is set to False, as the resources are detected and added to the
     // resource ahead of time. The resource is needed to be populated ahead of time instead of letting

aws-distro-opentelemetry-node-autoinstrumentation/test/aws-opentelemetry-configurator.test.ts

@@ -44,6 +44,8 @@ import { AwsXraySamplingClient } from '../src/sampler/aws-xray-sampling-client';
 import { GetSamplingRulesResponse } from '../src/sampler/remote-sampler.types';
 import { OTLPAwsSpanExporter } from '../src/otlp-aws-span-exporter';
 import { BaggageSpanProcessor } from '@opentelemetry/baggage-span-processor';
+import { ATTR_SERVICE_NAME } from '@opentelemetry/semantic-conventions';
+import { AWS_ATTRIBUTE_KEYS } from '../src/aws-attribute-keys';
 
 // Tests AwsOpenTelemetryConfigurator after running Environment Variable setup in register.ts
 describe('AwsOpenTelemetryConfiguratorTest', () => {
@@ -818,4 +820,38 @@ describe('AwsOpenTelemetryConfiguratorTest', () => {
       delete process.env.AGENT_OBSERVABILITY_ENABLED;
     }
   });
+
+  it('CustomizeResourceWithoutAgentObservability', () => {
+    delete process.env.AGENT_OBSERVABILITY_ENABLED;
+
+    let resource = new Resource({ [ATTR_SERVICE_NAME]: 'test-service' });
+    resource = awsOtelConfigurator['customizeResource'](resource);
+    expect(resource.attributes[ATTR_SERVICE_NAME]).toEqual('test-service');
+    expect(resource.attributes).not.toHaveProperty(AWS_ATTRIBUTE_KEYS.AWS_SERVICE_TYPE);
+  });
+
+  it('CustomizeResourceWithAgentObservabilityDefault', () => {
+    process.env.AGENT_OBSERVABILITY_ENABLED = 'true';
+
+    let resource = new Resource({ [ATTR_SERVICE_NAME]: 'test-service' });
+    resource = awsOtelConfigurator['customizeResource'](resource);
+    expect(resource.attributes[ATTR_SERVICE_NAME]).toEqual('test-service');
+    expect(resource.attributes[AWS_ATTRIBUTE_KEYS.AWS_SERVICE_TYPE]).toEqual('gen_ai_agent');
+
+    delete process.env.AGENT_OBSERVABILITY_ENABLED;
+  });
+
+  it('CustomizeResourceWithoutAgentObservability', () => {
+    process.env.AGENT_OBSERVABILITY_ENABLED = 'true';
+
+    let resource = new Resource({
+      [ATTR_SERVICE_NAME]: 'test-service',
+      [AWS_ATTRIBUTE_KEYS.AWS_SERVICE_TYPE]: 'existing-agent',
+    });
+    resource = awsOtelConfigurator['customizeResource'](resource);
+    expect(resource.attributes[ATTR_SERVICE_NAME]).toEqual('test-service');
+    expect(resource.attributes[AWS_ATTRIBUTE_KEYS.AWS_SERVICE_TYPE]).toEqual('existing-agent');
+
+    delete process.env.AGENT_OBSERVABILITY_ENABLED;
+  });
 });