Serverless Weather Alert Application

Overview

The Slack to Text Application is an AWS Lambda-based service that utilizes a Slack custom application that sends a a message via Twilio SMS if during a certain time range default = 8:00am-10:30am Eastern.

Architecture

The application is triggered by a custom Slack Event application. It invokes an AWS Lambda function that sends a Twilio text messsage.

Prerequisites

• AWS CLI already configured with at least PowerUser permission
• Python 3.10 installed
• SAM CLI installed

Setup process

Installing dependencies & building the target

In this example, we use the sam build command to automatically download dependencies defined in requirements.txt and create a deployment package. This package is what will be uploaded to Lambda when you deploy the application.

sam build

Local testing

You can test the function locally by invoking it with the SAM CLI, using a test event defined in a file.

sam local invoke SlackToText --event event.json

Deploying the application

The sam deploy command will package and deploy your application to AWS, with a series of prompts:

sam deploy --guided

When prompted for parameters, you can either accept the default values or provide custom ones based on your environment and requirements.

Fetch, tail, and filter Lambda function logs

To simplify troubleshooting, SAM CLI has a command called sam logs. sam logs lets you fetch logs generated by your deployed Lambda function from the command line.

sam logs -n SlackToText --stack-name slack-to-text --tail

Cleanup

To delete the Slack to Text Application that you created, use the AWS CLI. Assuming you used your project name for the stack name, you can run the following:

aws cloudformation delete-stack --stack-name slack-to-text

Resources

For more information about the AWS SAM CLI, see the AWS SAM CLI User Guide.

Contributing

Please read CONTRIBUTING.md for details on our code of conduct, and the process for submitting pull requests to us.

License

This project is licensed under the MIT License - see the LICENSE file for details.