aws-custom-resource-golang

AWS custom resources using Golang, Lambda and TypeScript.

• Motivation

This is ready-to-deploy proof of concept leveraging Golang to efficiently handle the lifecycle management of so called [[https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-custom-resources.html][AWS custom resources]]. This repository exemplifies how to use these to create [[https://docs.aws.amazon.com/systems-manager/latest/userguide/systems-manager-parameter-store.html][SSM parameters]] of type SecureString in CDK. You can, of course, use this repository as a template for more advanced custom resources.

📖 You can read more on my blog at [[https://blog.dornea.nu/2023/04/06/aws-custom-resources-with-lambda-and-golang/][AWS Custom resources with Lambda and Golang]].

• Deployment

Make sure you first install all dependencies:

• go binary
• npm

Then clone this repository:

#+begin_src sh $ git clone https://github.com/dorneanu/aws-custom-resource-golang #+end_src

Then install all npm dependencies:

#+begin_src sh $ cd deployments $ npm i --save-dev added 310 packages in 3s

30 packages are looking for funding run npm fund for details #+end_src

I always recommend to first run cdk diff before deploying. This way you can review the changes before it's to late:

#+begin_src sh $ npx aws-cdk diff #+end_src

Afterwards you can deploy:

#+begin_src sh $ npx aws-cdk deploy #+end_src

• TODOs

• Add [[https://github.com/sirupsen/logrus][logrus]]
• Try to bundle Golang based lambda function locally first (see this [[https://github.com/aws-samples/cdk-build-bundle-deploy-example/blob/main/cdk-bundle-go-lambda-example/lib/api-stack.ts][example]])
• Test locally

• Resources

• 2023-03-16 ◦ [[https://www.npmjs.com/package/cdk-secure-parameter-store][cdk-secure-parameter-store - Create SecureString SSM parameter through CDK (TypeScript project)]]
  • Related: [[https://github.com/HarshRohila/cdk-secure-parameter-store][github.com/HarshRohila/cdk-secure-parameter-store]]
• 2023-03-16 ◦ [[https://github.com/aws/aws-cdk/issues/3520][RFC: Have CDK put SecureString type parameter values into SSM securely · Issue #3520 · aws/aws-cdk · GitHub]]
• 2023-03-16 ◦ [[https://github.com/aws-samples/aws-cdk-examples/tree/master/typescript/custom-resource][github.com/aws-cdk-examples/typescript/custom-resource official example using Python and TypeScript]]
• 2023-03-16 ◦ [[https://medium.com/cyberark-engineering/advanced-custom-resources-with-aws-cdk-1e024d4fb2fa][Advanced AWS Custom Resources with CDK using Python]]
  • Related: [[https://github.com/royby-cyberark/iot-policy-custom-resource-example][github.com/royby-cyberark/iot-policy-custom-resource-example]]
• 2023-03-15 ◦ [[https://aws.amazon.com/blogs/devops/building-apps-with-aws-cdk/][Building, bundling, and deploying applications with the AWS CDK | AWS DevOps Blog]]
  • Related: [[https://github.com/aws-samples/cdk-build-bundle-deploy-example][github.com/aws-samples/cdk-build-bundle-deploy-example]]
• 2023-03-15 ◦ [[https://github.com/aws-samples/aws-cdk-examples/tree/master/typescript][AWS CDK examples using TypeScript]]
• 2023-03-13 ◦ [[ a Golang based Lambda function using CDK and TypeScript]]