How Do I Build an AWS SQS Queue Policy?

Introduction

This guide provides a step-by-step approach to creating an AWS SQS queue and attaching a policy to it using Pulumi. The purpose of this guide is to demonstrate how you can manage AWS resources programmatically with Pulumi, leveraging familiar programming languages to define and deploy your infrastructure. Specifically, we will focus on granting specific permissions to actions on the SQS queue through a policy.

Key Points:

• Create an SQS queue using Pulumi.
• Define a policy that grants specific permissions.
• Attach the policy to the SQS queue.

Step-by-Step Guide

Step 1: Create an SQS Queue

First, we will create an SQS queue using Pulumi. This queue will serve as the resource to which we will attach our policy.

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

// Create an SQS queue
const queue = new aws.sqs.Queue("myQueue", {
    visibilityTimeoutSeconds: 30,
});

Step 2: Define the Queue Policy

Next, define a policy for the SQS queue. This policy will specify the permissions granted to the queue, such as allowing messages to be sent from a particular SNS topic.

// Define the policy for the SQS queue
const queuePolicy = new aws.sqs.QueuePolicy("myQueuePolicy", {
    queueUrl: queue.url,
    policy: pulumi.interpolate`{
        "Version": "2012-10-17",
        "Id": "QueuePolicy",
        "Statement": [
            {
                "Effect": "Allow",
                "Principal": "*",
                "Action": "sqs:SendMessage",
                "Resource": "${queue.arn}",
                "Condition": {
                    "ArnEquals": {
                        "aws:SourceArn": "arn:aws:sns:us-west-2:123456789012:MyTopic"
                    }
                }
            }
        ]
    }`,
});

Step 3: Attach the Policy to the Queue

Finally, attach the policy to the queue to enforce the permissions defined.

Summary

In this guide, we have successfully created an SQS queue and attached a policy that permits the sqs:SendMessage action from a specific SNS topic. This demonstrates the power and flexibility of using Pulumi to manage AWS resources with code, making infrastructure management more efficient and seamless.