Project Daylily: A Setp Function Demo using SNS (Simple Notification Service) and Wait state.

This is a simple demo of an AWS Step function using SNS (Simple Notification Service) and Wait state.

Description

This sample project creates a step function with a task timer. It implements an AWS Step Functions state machine that implements a Wait state, and uses an AWS Step function task that sends an Amazon Simple Notification Service (Amazon SNS) notification. A Wait state is a state type that waits for a trigger to perform a single unit of work.

The entire stack is created using Serverless Framework (https://serverless.com).

Prerequisite

• Install node.js and serverless framework (If you don't have Node.js on your machine, install it first)

npm install -g serverless

• Install the serverless-step-functions plugin

npm install --save-dev serverless-step-functions

• Create a S3 bucket to be used as serverless deployment bucket and update the provider section in the serverless.yml.

Installing

• Clone the repository.

git clone https://github.com/subhamay-cloudworks/0086-daylily-sls.git

• Modify provider section the serverless.yml file

provider:
  name: aws
  stackName: daylily-sls-stack
  deploymentBucket:
    name: <Your Serverless Deployment Bucket Name>
    serverSideEncryption: AES256
  runtime: python3.9
  stage: devl
  region: us-east-1

• Create a KMS Key in the region where you intend to deploy the stack and update the parameter section of the serverless.yml file

• Run the following command to deploy the stack

sls deploy --verbose

• Run the following command to delete the stack

sls remove --verbose

Executing program

• Go to the Step Function Console and use the sample input and start the execution

{
    "waitSeconds": 10,
    "Message": "Testing Step Function - Task Timer (Lambda, Amazon SNS)"
}

Help

Post message in my blog (https://blog.subhamay.com)

Authors

Contributors names and contact info

Subhamay Bhattacharyya - subhamay.aws@gmail.com

Reference

https://docs.aws.amazon.com/step-functions/latest/dg/sample-project-transfer-data-sqs.html

Version History

• 0.1
  • Initial Release

License

None

Acknowledgments

[AWS] (https://docs.aws.amazon.com/step-functions/latest/dg/task-timer-sample.html)