Lessons

Getting Started with AWS SNS

Introduction to AWS SNS

Amazon Simple Notification Service (SNS) is a fully managed messaging service provided by AWS that enables you to send messages or notifications to a large number of subscribers. It can be used to send notifications via email, SMS, HTTP, or even to other AWS services such as Lambda functions or SQS queues.

In this lesson, we will explore how to get started with AWS SNS, including setting up topics, subscribing endpoints, and sending messages.

Setting up AWS SNS with AWS CDK and Typescript

Step 1: Install AWS CDK and Set up a new project

First, make sure you have Node.js and npm installed on your machine. Then, install the AWS CDK globally by running the following command:

npm install -g aws-cdk

Next, create a new AWS CDK project using the following commands:

mkdir sns-cdk
cd sns-cdk
cdk init app --language=typescript

Step 2: Define an SNS Topic in your CDK Stack

Open the lib/sns-cdk-stack.ts file in your project directory and define an SNS topic as follows:

import * as sns from '@aws-cdk/aws-sns';

const topic = new sns.Topic(this, 'MyTopic', {
  displayName: 'My SNS Topic'
});

Step 3: Deploy the CDK Stack

Run the following command to deploy your CDK stack to AWS:

cdk deploy

Step 4: Subscribe an Endpoint to the SNS Topic

You can subscribe an endpoint, such as an email address, to the SNS topic using the AWS CLI. For example, to subscribe an email address to the topic, run the following command:

aws sns subscribe --topic-arn <your-topic-arn> --protocol email --notification-endpoint <your-email-address>

Step 5: Send a Message to the SNS Topic

Finally, you can send a message to the SNS topic using the AWS CLI. For example, to send a message with the subject “Test Message” and the message body “Hello, world!” to the topic, run the following command:

aws sns publish --topic-arn <your-topic-arn> --subject "Test Message" --message "Hello, world!"

Conclusion

In this lesson, we have learned how to get started with AWS SNS by setting up a topic, subscribing endpoints, and sending messages using AWS CDK with Typescript and AWS CLI commands. Key learnings include understanding the basics of AWS SNS, creating SNS topics, subscribing endpoints, and sending messages to topics.

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