openfaas-function-auth-opa VS frank_jwt

The usual way to implement OPA for microservices is to stand up an authorization service implementing OPA and have other services invoke it over http using some of the published middleware. Even the OpenFaaS version written in Go depends on a standalone authorization service. I wanted to see if I could use OPA in a 100% serverless environment, making policy decisions in an API Gateway request authorizer without the overhead of additional http requests or the need to run a separate service. I found inspiration in this excellent sls-lambda-opa repo.

NOTE: Never store sensitive information about a client in the payload as the JWT is just encoded and not encrypted. You can paste the JWT I gave as an example above in this cool site which basically allows you to see in decoded. JSON Web Tokens - jwt.io

Although they did not make it into production, I experimented with the RabbitMQ message broker, Python (Django, Flask), Kubernetes + minikube, JWT, and NGINX. This was a hobby project, but I intended to learn about microservices along the way.

JSON Web Token (JWT) creation to extend user authentication to server-side functions

The (probably) most famous web resource about JWT - https://jwt.io - provides such a definition of JSON Web Tokens:

If you want to play with JWT and put these concepts into practice, you can use jwt.ioDebugger to decode, verify, and generate JWTs.

In this context, JSON Web Tokens (JWTs) play a crucial role.

Json Web Token (JWT): Even though it is more like an industry standard, we will use JWTs for stateless authentication in this article. If you want to learn more, you can refer to the official documentation.

Se pegar o token jwt podemos ver o que tem dentro, usando o site jwt.io.