About These AWS Products

Lambda

• Run code in response to events
• Serverless execution model
• Store code in S3
• Now supports scheduled executions

CloudTrail

• Record of AWS API calls
• Records contain:
  • The API call (method and parameters)
  • The caller (IP and ARN)
  • The call source (CLI, SDK, CloudFormation, console)

Case Study: Auto Tag

Auto Tag

• Automatically tag resources in AWS as they are created
• Presented at AWS re:Invent break out session

Single Account

Multi-Account

Implementation

• nodejs in ecmascript2015 (es6/harmony)
• used babel to transpile to es5
• deploying to lambda is super simple

Deployment

#!/bin/bash

echo 1. Zipping code for deployment

pushd lib
zip -r autotag.zip *
popd
mv lib/autotag.zip .
zip -g autotag.zip -r node_modules/

echo ---

echo 2. Uploading code via AWS CLI

aws lambda --region ap-northeast-1 update-function-code \
--function-name arn:aws:lambda:ap-northeast-1:[account_id]:function:gs_autotag \
--zip-file fileb:///home/e/dev/gs/autotag/autotag.zip