thfnog / poc-lambda-sqs-sns

Python AWS SQS/SNS Example

Example Python App Consuming and Producing messages to AWS SQS/SNS

Local Docker Environment

The example code relies on a running SQS service, the repo contains a Docker compose file that will spin up a configured SQS/SNS using Localstack.

• Install Docker Toolbox - Instructions

• Run the docker environment docker-compose up

This will launch a SQS service listening on port 4575 for SNS and 4576 for SQS

Build dependencies

• Python 3 $ brew install python3
• Virtual Env $ sudo pip3 install virtualenv

Configure and Run

From the terminal enable & configure the application dependencies.

• $ virtualenv env
• $ source env/bin/activate
• (env) (base) $ pip3 install -r requirements.txt
• Serveless (env) (base) $ npm install -g serverless@2
• (env) (base) $ serverless plugin install -n serverless-python-requirements

Create SQS Queue and SNS Topic.

• (env) (base) $ python poc/sqs-manager.py create_queue
• (env) (base) $ python poc/sns-manager.py create_topic

You can now run the lambda.

• (env) (base) $ sls invoke local -f <producer|consumer|publish|subscribe|unsubscribe> [options]

SQS examples:

• (env) (base) $ sls invoke local -f producer --path src/json/sqs-message.json
• (env) (base) $ sls invoke local -f consumer

SNS examples:

• (env) (base) $ sls invoke local -f subscribe --path src/json/sns-subscribe.json
• (env) (base) $ sls invoke local -f publish --path src/json/sns-publish.json
• (env) (base) $ sls invoke local -f unsubscribe --data 'eb06e413-ed5b-410e-bbce-b17b1da3f41c'

To leave the virtual Environment.

• (env) $ deactivate