REST API Microservice Demo

Let's learn some Golang with a simple REST API microservice.

Implemented using chi for routing, bbolt for data persistance, swagger for sdk and ui generation, testify for testing.

Architecture

Since this is a very simple microservice, there wasn't much architecture needed. There is just one simple resource managed. Below is a simple high level diagram describing the architecture.

                                         ________      _________      __________
  ClientApplication [SDK] ------------- |        |    |         |    |          |
                            < HTTP >    |  HTTP  |    | Message |    | Database |
  ClientApplication [SDK] ------------- | Server | -- | Service | -- |          |
                                        |________|    |_________|    |__________|
                   "/messages"              |
                   "/messages/{messageId}"  |
                                            |
                                            |
  Web Browser ------------------------------
                   "/swagger"

Documentation

The RESTful API is described in an OpenAPI 3.0 document found here: (openapi.json)

Running

usage: ./rest-api-microservice-demo db_path [port] [db_bucket_name]

Testing

go test ./...