Remove Lambda:Function:Name resource type support (#907)

*Description of changes:*
Remove `RemoteResourceTargetIdentifier` attribute which will treat
Lambda Function as a regular AWS resource. It may conflict with the
current concept that have Lambda function defined as a service.

By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 license.

awsagentprovider/src/main/java/software/amazon/opentelemetry/javaagent/providers/AwsAttributeKeys.java

@@ -64,9 +64,6 @@ private AwsAttributeKeys() {}
   static final AttributeKey<String> AWS_SECRET_ARN =
       AttributeKey.stringKey("aws.secretsmanager.secret.arn");
 
-  static final AttributeKey<String> AWS_LAMBDA_NAME =
-      AttributeKey.stringKey("aws.lambda.function.name");
-
   static final AttributeKey<String> AWS_LAMBDA_ARN =
       AttributeKey.stringKey("aws.lambda.function.arn");
 

awsagentprovider/src/main/java/software/amazon/opentelemetry/javaagent/providers/AwsMetricAttributeGenerator.java

@@ -47,7 +47,6 @@
 import static software.amazon.opentelemetry.javaagent.providers.AwsAttributeKeys.AWS_GUARDRAIL_ARN;
 import static software.amazon.opentelemetry.javaagent.providers.AwsAttributeKeys.AWS_GUARDRAIL_ID;
 import static software.amazon.opentelemetry.javaagent.providers.AwsAttributeKeys.AWS_KNOWLEDGE_BASE_ID;
-import static software.amazon.opentelemetry.javaagent.providers.AwsAttributeKeys.AWS_LAMBDA_NAME;
 import static software.amazon.opentelemetry.javaagent.providers.AwsAttributeKeys.AWS_LAMBDA_RESOURCE_ID;
 import static software.amazon.opentelemetry.javaagent.providers.AwsAttributeKeys.AWS_LOCAL_OPERATION;
 import static software.amazon.opentelemetry.javaagent.providers.AwsAttributeKeys.AWS_LOCAL_SERVICE;
@@ -493,11 +492,6 @@ private static void setRemoteResourceTypeAndIdentifier(SpanData span, Attributes
                 Optional.ofNullable(escapeDelimiters(span.getAttributes().get(AWS_SECRET_ARN))));
         cloudformationPrimaryIdentifier =
             Optional.ofNullable(escapeDelimiters(span.getAttributes().get(AWS_SECRET_ARN)));
-      } else if (isKeyPresent(span, AWS_LAMBDA_NAME)) {
-        remoteResourceType = Optional.of(NORMALIZED_LAMBDA_SERVICE_NAME + "::Function");
-        remoteResourceIdentifier =
-            getLambdaResourceNameFromAribitraryName(
-                Optional.ofNullable(escapeDelimiters(span.getAttributes().get(AWS_LAMBDA_NAME))));
       } else if (isKeyPresent(span, AWS_LAMBDA_RESOURCE_ID)) {
         remoteResourceType = Optional.of(NORMALIZED_LAMBDA_SERVICE_NAME + "::EventSourceMapping");
         remoteResourceIdentifier =
@@ -519,16 +513,6 @@ private static void setRemoteResourceTypeAndIdentifier(SpanData span, Attributes
     }
   }
 
-  // NOTE: "name" in this case can be either the lambda name or lambda arn
-  private static Optional<String> getLambdaResourceNameFromAribitraryName(
-      Optional<String> arbitraryName) {
-    if (arbitraryName != null && arbitraryName.get().startsWith("arn:aws:lambda:")) {
-      Arn resourceArn = Arn.fromString(arbitraryName.get());
-      return Optional.of(resourceArn.getResource().toString().split(":")[1]);
-    }
-    return arbitraryName;
-  }
-
   private static Optional<String> getSecretsManagerResourceNameFromArn(Optional<String> stringArn) {
     Arn resourceArn = Arn.fromString(stringArn.get());
     return Optional.of(resourceArn.getResource().toString().split(":")[1]);

awsagentprovider/src/test/java/software/amazon/opentelemetry/javaagent/providers/AwsMetricAttributeGeneratorTest.java

@@ -26,7 +26,6 @@
 import static software.amazon.opentelemetry.javaagent.providers.AwsAttributeKeys.AWS_DATA_SOURCE_ID;
 import static software.amazon.opentelemetry.javaagent.providers.AwsAttributeKeys.AWS_GUARDRAIL_ID;
 import static software.amazon.opentelemetry.javaagent.providers.AwsAttributeKeys.AWS_KNOWLEDGE_BASE_ID;
-import static software.amazon.opentelemetry.javaagent.providers.AwsAttributeKeys.AWS_LAMBDA_NAME;
 import static software.amazon.opentelemetry.javaagent.providers.AwsAttributeKeys.AWS_LAMBDA_RESOURCE_ID;
 import static software.amazon.opentelemetry.javaagent.providers.AwsAttributeKeys.AWS_LOCAL_OPERATION;
 import static software.amazon.opentelemetry.javaagent.providers.AwsAttributeKeys.AWS_LOCAL_SERVICE;
@@ -802,11 +801,6 @@ public void testSdkClientSpanWithRemoteResourceAttributes() {
     validateRemoteResourceAttributes("AWS::SecretsManager::Secret", "secretName");
     mockAttribute(AWS_SECRET_ARN, null);
 
-    // Validate behaviour of AWS_LAMBDA_NAME, then remove it.
-    mockAttribute(AWS_LAMBDA_NAME, "arn:aws:lambda:us-east-1:123456789012:function:functionName");
-    validateRemoteResourceAttributes("AWS::Lambda::Function", "functionName");
-    mockAttribute(AWS_LAMBDA_NAME, null);
-
     // Validate behaviour of AWS_LAMBDA_RESOURCE_ID
     mockAttribute(AWS_LAMBDA_RESOURCE_ID, "eventSourceId");
     validateRemoteResourceAttributes("AWS::Lambda::EventSourceMapping", "eventSourceId");