Trigger AWS StepFunction using S3 Bucket Event

Here’s an code that includes a S3 bucket, an S3 event rule, and an event target that triggers the Step Function when a new file is added to the bucket:

In this example, we first define our S3 bucket (bucket) and two Lambda functions (lambda1 and lambda2) using the s3.Bucket and lambda.Function classes, respectively.

We then add a S3 event notification to the bucket using the bucket.addEventNotification method. This notification triggers an SNS topic whenever a new object is created in the bucket that matches the specified suffix.

Next, we define our Step Function and add our Lambda functions as individual steps using the tasks.LambdaInvoke class, just like in the previous example.

Finally, we define a CloudWatch Events.

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