Serverless

I've created a basic structure using serverless framework which includes individual lambda functions, GitLab CI/CD with different environments, and a basic API Gateway. I've also added some of the reference links for more information.

Setup

1. Create a .env.dev file by taking reference of env.dev.example.
2. Install packages using npm i.

Start local server

• Run locally using npm start or you can also debug using VSCode (F5).
• Test and upload files to local S3 for testing (find a sample function inside).

Deployment

First time deployment

• AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY environment variables must be set in GitLab CI/CD variables.
• Add other environments to GitLab CI/CD variables separately for staging and production.

Update deployment

There are following GitLab pipelines that deploy to AWS whenever we push any changes.

• The staging branch is deployed to the staging url.
• The master branch is deployed to the production url.

Notes:

• It compares hash while deploying. So, it skips deploying of a particular lambda function if it hasn't been changed.
• Any change in env needs to re-deploy all the functions using it.

Create packages in local

If you want to create packages, use npm run package. This will create a .serverless folder with all the individual zip files.

Some Reference Links

• Deploying AWS Lambda function using GitLab CI/CD | GitLab
• Serverless Environment Variables - A Comprehensive Guide
• gitlab.com/gitlab-org/project-templates/serverless-framework
• aws-secrets-management