bug: InvalidDefinition error when creating/updating State Machine #9771
Description
Is there an existing issue for this?
- I have searched the existing issues
Current Behavior
I'm trying to create a state machine using the following definition that I validated on AWS:
{
"StartAt": "GetSuffix",
"States": {
"GetSuffix": {
"Type": "Pass",
"Parameters": {
"suffix.$": "States.ArrayGetItem(States.StringSplit($$.StateMachine.Name, '-'), States.MathAdd(States.ArrayLength(States.StringSplit($$.StateMachine.Name, '-')), -1))"
},
"End": true
}
}
}It fails with the following error:
│ Error: updating Step Functions State Machine (arn:aws:states:eu-west-3:000000000000:stateMachine:my-state-machine): InvalidDefinition: Error=ValueError Args=["Expected 2 arguments for function type '<class 'localstack.services.stepfunctions.asl.component.intrinsic.function.statesfunction.string_operations.string_split.StringSplit'>', but got: '(FunctionArgumentList| {'arg_list': [], 'size': 0}'."] in definition '{
│ "StartAt": "GetSuffix",
│ "States": {
│ "GetSuffix": {
│ "Type": "Pass",
│ "Parameters": {
│ "suffix.$": "States.ArrayGetItem(States.StringSplit($$.StateMachine.Name, '-'), States.MathAdd(States.ArrayLength(States.StringSplit($$.StateMachine.Name, '-')), -1))"
│ },
│ "End": true
│ }
│ }
│ }
│ '.
│
│ with aws_sfn_state_machine.main,
│ on stepFunction.tf line 1, in resource "aws_sfn_state_machine" "main":
│ 1: resource "aws_sfn_state_machine" "main" {
Based on my tests there seems to be 2 issues:
- Using a variable starting with
$$as a function argument is not supported. - Passing the result of a function directly as another function argument is not supported.
Expected Behavior
The definition should be considered valid and the state machine should be created.
How are you starting LocalStack?
With the localstack script
Steps To Reproduce
Create a state machine using the provided definition.
Environment
- LocalStack: 2.3.0
- PROVIDER_OVERRIDE_STEPFUNCTIONS=v2
- Terraform v1.6.2Anything else?
No response