How Do I Configure an AWS SQS Queue Policy?

Introduction

Amazon Simple Queue Service (SQS) is a fully managed message queuing service that enables you to decouple and scale microservices, distributed systems, and serverless applications. Configuring an SQS queue policy is essential to control access and permissions for your SQS queues. This guide will walk you through the process of configuring an AWS SQS queue policy using Pulumi, a modern infrastructure as code platform.

Step-by-Step Configuration of SQS Queue Policy

To configure an AWS SQS queue policy, you need to define an SQS queue and attach a policy to it that specifies permissions for various actions. This example demonstrates how to create an AWS SQS queue and attach a policy to it by defining the necessary resources and configurations.

Essential Components

• aws_sqs_queue: This resource creates the SQS queue.
• aws_sqs_queue_policy: This resource attaches a policy to the created SQS queue to manage permissions.

Example Code

In the example below, we’ll create a simple SQS queue and add a policy that grants permissions to another AWS account to send messages to the queue.

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

// Create an SQS queue
const myQueue = new aws.sqs.Queue("my_queue", {name: "my-queue"});
// Attach a policy to the queue
const myQueuePolicy = new aws.sqs.QueuePolicy("my_queue_policy", {
    queueUrl: myQueue.id,
    policy: pulumi.jsonStringify({
        Version: "2012-10-17",
        Statement: [{
            Effect: "Allow",
            Principal: "*",
            Action: "sqs:SendMessage",
            Resource: myQueue.arn,
            Condition: {
                ArnEquals: {
                    "aws:SourceArn": "arn:aws:iam::123456789012:root",
                },
            },
        }],
    }),
});
export const queueUrl = myQueue.id;
export const queueArn = myQueue.arn;

Key Points

• Queue Creation: The aws_sqs_queue resource is used to create the SQS queue.
• Policy Attachment: The aws_sqs_queue_policy resource is used to attach a policy to the queue, specifying who can perform actions on the queue.
• Permissions: The example policy grants the specified AWS account the ability to send messages to the queue.

Conclusion

In this guide, we demonstrated how to configure an AWS SQS queue policy using Pulumi. We created an SQS queue named “my-queue” and attached a policy that allows an AWS account (with the ARN arn:aws:iam::123456789012:root) to send messages to it. The provided outputs give you the queue’s URL and ARN for easy reference. By following these steps, you can effectively manage access and permissions for your SQS queues.