aws-cdk-py-sqs-sns-01

Using AWS CDK Python to create Simple message Queue Service (SQS) and subscribe to the message queue; and Simple Notification Service (SNS)

Prerequisite

Same as aws-cdk-py-s3-01

Build and Deploy

• [Skip Create Project] This repo contains artifacts generated by the following codes:

$ cd ~/projects
$ mkdir aws-cdk-py-sqs-sns-01
$ cd aws-cdk-py-sqs-sns-01
$ cdk init sample-app --language python

• Create python virtual environment

$ virtualenv .venv
$ source .venv/bin/activate

(.venv) $ pip install -r requirements.txt

• Set Policy; the following policies are needed minimally to cdk deploy, and they are needed for CloudFormation & S3.
  • Unless, the IAM user (configured above in the ~/.aws/credential and aws_access_key_id key) belongs to the Administrators group.

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "cloudformation:DescribeStacks",
                "cloudformation:CreateChangeSet",
                "cloudformation:DescribeChangeSet",
                "cloudformation:ExecuteChangeSet",
                "cloudformation:DescribeStackEvents",
                "cloudformation:DeleteChangeSet",
                "cloudformation:DeleteStack",
                "cloudformation:GetTemplate",
                "sqs:*",
                "sns:*"
            ],
            "Resource": "*"
        }
    ]
}

• Also see the AWS docs:

  • Basic examples of IAM policies for Amazon SQS
  • Using identity-based policies with Amazon SNS

• Build

(.venv) $ cdk synth

• Deploy

(.venv) $ cdk deploy

# to speed up the deployment time 
(.venv) $ cdk deploy --hotswap

Test

• Install testing packages

(.venv) $ cd ~/projects/aws-cdk-py-sqs-sns-01

(.venv) $ pip install -r requirements-dev.txt

• The test file: ./tests/unit/test_aws_cdk_py_sqs_sns_01_stack.py

• Test Results as of 2022, July 17

(.venv) $ cd ~/projects/aws-cdk-py-sqs-sns-01
(.venv) $ pytest
=========================================================== test session starts ============================================================
platform linux -- Python 3.8.10, pytest-6.2.5, py-1.11.0, pluggy-1.0.0
rootdir: /home/gabe/projects/aws-cdk-py-sqs-sns-01
collected 2 items
tests/unit/test_aws_cdk_py_sqs_sns_01_stack.py ..                                                                                    [100%]
============================================================ 2 passed in 6.50s =============================================================
(.venv) $

Cleanup

• Cleanup

(.venv) $ cdk destroy

Output:

Are you sure you want to delete: aws-cdk-py-sqs-sns-01 (y/n)? y
aws-cdk-py-sqs-sns-01: destroying...

 ✅  aws-cdk-py-sqs-sns-01: destroyed

(.venv) $

• Additional cleanup not done by the the cdk destroy

  • CloudWatch Log group; go to AWS Console "CloudWatch > Logs > Log groups" and delete two log groups:
    • /aws/lambda/<stack-name>-CustomCDKBucketDeployment<unique-id>
    • /aws/lambda/<stack-name>-CustomS3AutoDeleteObjectsCustomResourcePr-<unique-id>

• Exit virtualenv

(.venv) $ deactivate
$