How Do I Build an AWS SNS Topic Subscription?

Introduction

This guide will walk you through the process of building an AWS Simple Notification Service (SNS) topic and creating a subscription using Pulumi. AWS SNS is a fully managed messaging service for both application-to-application (A2A) and application-to-person (A2P) communication. By following this guide, you will learn how to set up an SNS topic and subscribe to it, enabling you to receive notifications through various protocols.

Step-by-Step Process

To create an AWS SNS topic and a subscription using Pulumi, follow these steps:

1. Import Required Libraries: Start by importing the necessary Pulumi and AWS libraries in your TypeScript program.

2. Create an SNS Topic: Use the aws.sns.Topic resource to create a new SNS topic. This topic will serve as the channel for sending notifications.

3. Create an SNS Topic Subscription: Use the aws.sns.TopicSubscription resource to create a subscription to the SNS topic. Specify the topic ARN, the protocol (such as email, SMS, or Lambda), and the endpoint (like an email address or phone number) where notifications will be sent.

4. Export ARNs: Finally, export the ARNs (Amazon Resource Names) of both the topic and the subscription. This will allow you to reference them later as needed.

Below is a complete example in TypeScript:

import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

// Create an SNS Topic
const topic = new aws.sns.Topic("myTopic", {
    // Optional parameters can be added here
});

// Create an SNS Topic Subscription
const subscription = new aws.sns.TopicSubscription("mySubscription", {
    topic: topic.arn,
    protocol: "email",  // Protocol can be "email", "sms", "lambda", etc.
    endpoint: "example@example.com",  // Replace with your email address or other endpoint
    // Additional optional parameters can be added here
});

// Export the topic ARN and subscription ARN
export const topicArn = topic.arn;
export const subscriptionArn = subscription.arn;

Key Points

• Pulumi and AWS Libraries: Ensure you have the necessary libraries installed and imported.
• SNS Topic: The topic is the core component where messages are published.
• Subscription Protocols: You can choose from various protocols like email, SMS, or Lambda based on your notification needs.
• ARNs: Exporting ARNs is crucial for managing and referencing your SNS resources.

Conclusion

By following this guide, you have successfully created an AWS SNS topic and a subscription using Pulumi. This setup allows you to manage notifications efficiently and integrate them into your applications. You can customize the protocol and endpoint to fit your specific requirements, ensuring that your notification system is robust and scalable.