chrischenyc / cdk-in-go-brown-bag

CDK 2 in Go brown-bag demo

This is a CDK 2 project in Go. I used it in one brown-bag session to introduce CDK to an engineering organisation.

talk slides

presentation slides

companion blog

Using CDK with Go - a recent brown bag talk and some thoughts

Useful commands

• cdk deploy deploy this stack to your default AWS account/region
• cdk diff compare deployed stack with current state
• cdk synth emits the synthesized CloudFormation template
• go test run unit tests

Build it from scratch

• requires node.js
• install CDK globally: npm i -g cdk or use npx cdk ...
• we use CDK 2: cdk --version
• mkdir project-name && cd project-name
• init CDK project in Go: npx cdk init --language go
• evaluate cdk.json
• default deployment: npx cdk deploy
• refine CloudFormation stack properties: name, tags
• define s3 bucket
• refine s3 bucket properties: encryption, bucket policy
• define lambda function
• define S3 event source to invoke lambda function
• define DynamoDB table
• grant lambda function permissions to access S3 bucket and DynamoDB table

Test deployment

• upload a file to the provisioned S3 bucket

• Lambda function should be invoked

• Lambda should write the meta data in the DynamoDB table