boto3_step_functions_hello_world_state_machine_creation.py

1import boto3
2
3# Create a Step Functions client
4sfn = boto3.client('stepfunctions')
5
6# Define the state machine
7# Note: You must replace the roleArn with a valid IAM role ARN that has 
8# permissions to execute Step Functions.
9state_machine_definition = """
10{
11  "Comment": "A Hello World example of the Amazon States Language using Pass states",
12  "StartAt": "HelloWorld",
13  "States": {
14    "HelloWorld": {
15      "Type": "Pass",
16      "Result": "Hello World!",
17      "End": true
18    }
19  }
20}
21"""
22
23def create_state_machine(name, definition, role_arn):
24    try:
25        response = sfn.create_state_machine(
26            name=name,
27            definition=definition,
28            roleArn=role_arn
29        )
30        print(f"State Machine Created: {response['stateMachineArn']}")
31        return response['stateMachineArn']
32    except Exception as e:
33        print(f"Error creating state machine: {e}")
34
35if __name__ == "__main__":
36    # Replace with your actual IAM Role ARN
37    IAM_ROLE_ARN = 'arn:aws:iam::123456789012:role/StepFunctionsRole'
38    STATE_MACHINE_NAME = 'HelloWorldStateMachine'
39    
40    create_state_machine(STATE_MACHINE_NAME, state_machine_definition, IAM_ROLE_ARN)