Step Function Definition File is Returning Invalid When Using Jsonata But Is Valid

[bradykurtz]

I have a definition file that keeps throwing the below error when used against localstack. When validating against a AWS proper the file is valid.

Errror:

        {
            "severity": "ERROR",
            "code": "SCHEMA_VALIDATION_FAILED",
            "message": "ASLParserException ['line 767:14, at \"Arguments\", mismatched input \\'\"Arguments\"\\' expecting {\\'\"Resource\"\\', \\'\"Parameters\"\\'}', 'line 769:16"
        }

Agruments is definitely valid in Jasonata.

I discovered this by running the below command:

aws stepfunctions validate-state-machine-definition   --definition file://StateMachineNata.asl.json   --type STANDARD   --endpoint-url http://localhost:4566   --region us-east-1

When removing the endpoint-url the definition is valid

aws stepfunctions validate-state-machine-definition   --definition file://StateMachineNata.asl.json   --type STANDARD   --region us-east-1

Which results in

{
    "result": "OK",
    "diagnostics": [],
    "truncated": false
}

Example

{
    "StartAt": "TestMap",
    "QueryLanguage": "JSONata",
    "States": {
        "TestMap": {
            "Type": "Map",
            "MaxConcurrency": 50,
            "ItemProcessor": {
                "ProcessorConfig": {
                    "Mode": "DISTRIBUTED",
                    "ExecutionType": "STANDARD"
                },
                "StartAt": "SubMap",
                "States": {
                    "SubMap": {
                        "Type": "Task",
                        "Resource": "arn:aws:states:::lambda:invoke",
                        "End": true,
                        "QueryLanguage": "JSONata",
                        "Arguments": {
                            "FunctionName": "SubMapFun",
                            "Payload": "{% $states.input %}"
                        }
                    }
                }
            },
            "ItemReader": {
                "Resource": "arn:aws:states:::s3:getObject",
                "ReaderConfig": {
                    "InputType": "JSON"
                },
                "Arguments": {
                    "Bucket": "{% $states.input.Payload.s3Bucket %}",
                    "Key": "{% $states.input.Payload.s3Key %}"
                }
            },
            "ResultWriter": {
                "Resource": "arn:aws:states:::s3:putObject",
                "Arguments": {
                    "Bucket": "{% $states.input.Payload.resultS3Bucket %}",
                    "Prefix": "{% $states.input.Payload.resultS3Key %}"
                }
            },
            "End": true,
            "QueryLanguage": "JSONata"
        }
    }
}

[ryan-berke]

Hi @bradykurtz, I'm reaching out on behalf of the LocalStack Support Team. I noticed you have a paid subscription, which gives you dedicated support with us. Would you like me to open a ticket for you regarding this? You can also open a ticket yourself with any additional details by emailing us at: support@localstack.cloud. Please let me know and I will be happy to assist you!