Ruby on AWS Lambda

Why?

Because:

• AWS Lambda has immense potential and interesting implications
• AWS Lambda doesn't officially support Ruby, as yet
• Ruby has immense potential and interesting implications as well!

How?

By:

• packaging a Ruby binary with our app
  • thank you, Traveling Ruby!
• Lambda executes a simple NodeJS program that shells out to our code
  • see index.js
• Ruby executes your code
  • yes, Bundler works! (within reason)
• Hello World is about 8MB, leaving you 42MB of room to get crazy
  • (no native gems)

Usage

1. Sign up for Amazon AWS
2. Get access to Amazon S3
3. Get access to Amazon Lambda
4. Create an IAM account with access to S3 and Lambda
5. Install the aws cli tools
6. Set up an AWS profile in ~/.aws/credentials for the account created above
7. Change the variables in deploy.sh to match your app and AWS settings
8. Ensure you're using ruby 2.1.x in this directory
9. Ensure you're using Bundler version 1.9.9
10. Add any gems you need to app/Gemfile
11. cd app and run bundle install from there (you need a Gemfile.lock)
12. edit app/app.rb with your application code
13. run ./deploy.sh linux-x86_64
14. test your Lambda Function!
    • i've been using the web console for testing