Error occurs with AWS Lambda when sending non-standard APIGatewayProxyRequest json.

[jaffinito]

Description
Lambda function: APIGatewayProxyRequest

When sending the following json to an APIGatewayProxyRequest lambda function, it fails with System.ArgumentNullException errors.

{
  "httpMethod": "GET",
  "path": "/test",
  "body": "{\"Name\":\"John\"}"
}

Exceptions:

2024-06-06 15:21:33,716 NewRelic   WARN: [pid: 16, tid: 9] Unexpected exception in AddEventTypeAttributes(). Event type APIGatewayProxyRequest had an inputObject of type Amazon.Lambda.APIGatewayEvents.APIGatewayProxyRequest. Exception: System.ArgumentNullException: Value cannot be null. (Parameter 'parameters')
   at NewRelic.Agent.Core.Transactions.Transaction.SetRequestParameters(IEnumerable`1 parameters)
   at System.Dynamic.UpdateDelegates.UpdateAndExecuteVoid2[T0,T1](CallSite site, T0 arg0, T1 arg1)
   at NewRelic.Agent.Extensions.Lambda.LambdaEventHelpers.SetWebRequestProperties(IAgent agent, ITransaction transaction, Object webReqEvent)
   at System.Dynamic.UpdateDelegates.UpdateAndExecuteVoid4[T0,T1,T2,T3](CallSite site, T0 arg0, T1 arg1, T2 arg2, T3 arg3)
   at NewRelic.Agent.Extensions.Lambda.LambdaEventHelpers.AddEventTypeAttributes(IAgent agent, ITransaction transaction, AwsLambdaEventType eventType, Object inputObject)

2024-06-06 15:21:33,734 NewRelic  ERROR: [pid: 16, tid: 9] Tracer invocation error
System.ArgumentNullException: Value cannot be null. (Parameter 'parameters')
   at NewRelic.Agent.Core.Transactions.Transaction.SetRequestParameters(IEnumerable`1 parameters)
   at System.Dynamic.UpdateDelegates.UpdateAndExecuteVoid2[T0,T1](CallSite site, T0 arg0, T1 arg1)
   at NewRelic.Agent.Extensions.Lambda.LambdaEventHelpers.SetWebRequestProperties(IAgent agent, ITransaction transaction, Object webReqEvent)
   at System.Dynamic.UpdateDelegates.UpdateAndExecuteVoid4[T0,T1,T2,T3](CallSite site, T0 arg0, T1 arg1, T2 arg2, T3 arg3)
   at NewRelic.Agent.Extensions.Lambda.LambdaEventHelpers.AddEventTypeAttributes(IAgent agent, ITransaction transaction, AwsLambdaEventType eventType, Object inputObject)
   at NewRelic.Providers.Wrapper.AwsLambda.HandlerMethodWrapper.BeforeWrappedMethod(InstrumentedMethodCall instrumentedMethodCall, IAgent agent, ITransaction transaction)
   at NewRelic.Agent.Core.Wrapper.WrapperService.BeforeWrappedMethod(Type type, String methodName, String argumentSignature, Object invocationTarget, Object[] methodArguments, String tracerFactoryName, String metricName, UInt32 tracerArguments, UInt64 functionId)
   at NewRelic.Agent.Core.AgentManager.GetTracerImpl(String tracerFactoryName, UInt32 tracerArguments, String metricName, String assemblyName, Type type, String typeName, String methodName, String argumentSignature, Object invocationTarget, Object[] arguments, UInt64 functionId)

The problem appears to be in this method on line 295.

Expected Behavior
It just works, or at least an null exceptions are handled.

Steps to Reproduce
Here is the meat of the lambda function:

public APIGatewayProxyResponse FunctionHandler(APIGatewayProxyRequest request, ILambdaContext context) => new APIGatewayProxyResponse()
{
    StatusCode = 200,
    Body = Environment.GetEnvironmentVariable(new Guid().ToString())
};

Publish this, add the layer, and send the initial JSON and the error occurs.

For Maintainers Only or Hero Triaging this bug
P2
S

[workato-integration]

https://new-relic.atlassian.net/browse/NR-277941