Getting AWS State machine execution ARN inside the step function

Question

I need to get the ARN of the current execution for my state machine inside the state machine itself. Is it possible?

So can I create a state machine(say from a lambda function) and then take its execution ARN and pass it as a parameter to that machine OR is there any utility available inside the state machine that allows getting the execution ARN for that machine?

score 19 · Accepted Answer · answered May 26 '19 at 22:33

19

AWS Step Functions released recently a feature called context object.

Now you have access to the execution data through $$ inside the Parameters block.

https://docs.aws.amazon.com/step-functions/latest/dg/input-output-contextobject.html

answered May 26 '19 at 22:33

diegosantiviago

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Is there a way to extract only the id string from the executionId? – wawawa Jan 14 '21 at 15:53
2

Yes, by getting the "Name" variable. – Khalid Bourhaba Mar 22 '21 at 18:05

score 3 · Answer 2 · answered Apr 17 '19 at 20:29

Step Functions do not currently have this feature, you can however specify your own execution id by specifying a name. This will make the ARN predictable, as it will end up being

arn:aws:states:[AWS Region]:[AWS Account ID]:execution:[Step Function Name]:[The name that you passed to the start-execution call]

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Getting AWS State machine execution ARN inside the step function

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