CODEWITHSUNDEEP
serverless-frameworkstate-machineaws-step-functionsstate-machine-workflowserverless-framework-step-functions
jtotoole
jtotoole

Reputation: 33

step-functions-local: Can't start state machine within state machine

I've got step-functions-local and serverless-offline configured to test a state machine (let's call it #1) that triggers another state machine (#2) defined within the project.

Both show as created when I fire up the local server with sls offline start --stage dev:

[Serverless Step Functions Local] 2022-07-29 11:03:59.867: [200] CreateStateMachine <=
{"sdkResponseMetadata":null,"sdkHttpMetadata":null,"stateMachineArn":"arn:aws:states:us-east-1:123:stateMachine:Foo",
"creationDate":1659117839863}

[Serverless Step Functions Local] 2022-07-29 11:03:59.883: [200] CreateStateMachine <=
{"sdkResponseMetadata":null,"sdkHttpMetadata":null,"stateMachineArn":
"arn:aws:states:us-east-1:123:stateMachine:Bar","creationDate":1659117839882}

I then test #1 with the following command:

aws stepfunctions --endpoint http://localhost:8083 start-execution --state-machine \
arn:aws:states:us-east-1:123:stateMachine:Foo --name local-test-$RANDOM --input <JSON string payload>

#1 executes several steps successfully, including read/write S3 operations, until it reaches the step to trigger #2; at that point, it fails with an exception that reads in part:

"Error":"StepFunctions- StateMachineDoesNotExistException",
"Cause":"State Machine Does Not Exist: 'arn:aws:states:us-east-1:123:stateMachine:Bar' 
(Service: AWSStepFunctions; Status Code: 400; Error Code: StateMachineDoesNotExist

Here's how the step to start state machine #1 is defined in the #1 .yml file:

 BarStateMachine:
      Type: Task
      Resource: "arn:aws:states:::states:startExecution.sync:2"
      Parameters:
        StateMachineArn:
          arn:aws:states:us-east-1:123:stateMachine:Bar

I can get #1 to work if, instead of pointing to the arn for the locally-created #2, I point it to the arn of the deployed version. However, this deployed version is of course a remote resource, which sort of defeats the purpose of local testing. Any ideas on how to get the local version of #2 executed properly?

Upvotes: 0

Views: 1247

Answers (1)

Kristin Lindquist
Kristin Lindquist

Reputation: 1

Try something like export STEP_FUNCTIONS_ENDPOINT=http://localhost:8083 && serverless offline start - that should cause step function local to use itself for the step function service integration.

Upvotes: 0

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