tea

Example of Golang api using OpenAPI schemas

Types generated using https://github.com/deepmap/oapi-codegen/

Development

Updating the schema

1. Add to the schema.yml file
2. run go generate ./...

Running the app

Bring up the backend app

cd api/handler
go run main.go

test the endpoints with curl or in vscode using the requests.http files

curl --request GET --url http://localhost:8080/teas
curl --request POST --url http://localhost:8080/teas
curl --request GET --url http://localhost:8080/teas/{id}

Bringing up the graph server:

cd graph && npm run start

Server ready at: http://localhost:4000/

Deployment

Backend ... Infra managed with CDK. See [ops/cdk][./ops/cdk/readme.md]

x-amazon-apigateway-integration Is set to be the execution endpoint of the lambda handler and must be a POST request -> https://docs.aws.amazon.com/apigateway/latest/developerguide/set-up-lambda-integrations.html

Endpoint currently deployed to: https://z4106slus8.execute-api.us-east-1.amazonaws.com/prod/teas

Frontend... NextJs on Cloudflare pages.

• / index route for a list of teas
• /tea/{id} for info about a specific tea
• /create to add a new tea [route requires auth access and api needs auth access too]

Auth

https://github.com/auth0/nextjs-auth0#edge-for-middleware-and-the-edge-runtime

• need to proxy api requests through the nextjs api endpoints (no cors then anyway, server to server)
• add customised header component to say hi and have logout everywhere
• protect /create route, redirects to a sorry "go home" 403 page if you can't log in
• need to protect api routes by locking down the lambda so it can only be requested from the next app? https://www.wellarchitectedlabs.com/security/300_labs/300_multilayered_api_security_with_cognito_and_waf/3_prevent_requests_from_accessing_api_directly/

https://github.com/auth0/nextjs-auth0/blob/main/ARCHITECTURE.md

TODO

• use TS types generated from OAPI schema
• auth (only auth can create?): https://docs.aws.amazon.com/cdk/api/v1/docs/aws-apigateway-readme.html#lambda-based-token-authorizer
• add architecture diagram
• github action CI https://medium.com/geekculture/how-to-automate-aws-cdk-deployments-using-github-actions-cec5db24ca8d
• include swagger middleware for validating API
• add DB
• observability

References

https://docs.aws.amazon.com/apigateway/latest/developerguide/api-gateway-extensions-integrations.html -> extensions support the AWS-specific authorization and API Gateway-specific API integrations for REST APIs and HTTP APIs. https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_apigateway.SpecRestApi.html -> CDK construct that builds an API Gateway from an OpenAPI spec https://docs.aws.amazon.com/lambda/latest/dg/golang-handler.html -> reference for using go as a lambda handler https://github.com/awslabs/aws-lambda-go-api-proxy/ -> framework allows using go-chi with a lambda handler

https://docs.aws.amazon.com/cdk/api/v2/docs/@aws-cdk_aws-lambda-go-alpha.BundlingOptions.html CDK construct for using go as a lambda