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Published: May 8, 2019 License: MIT Imports: 6 Imported by: 0


Space Build Status codecov

A user management microservice; OAuth 2 provider

Space (formely known as Jupiter) is an user authentication and authorisation microservice intended to be used across multiple client applications. Currently, it's used to provide OAuth 2 authorisation for the earaujoassis/wallet and earaujoassis/postal projects. Though it is not intended to be used widely, it can be used as a reference implementation of a Go-based OAuth 2 provider.

It uses Gin as the Web Framework and GORM for Go's structure–relational mapping. Redis is used as a memory store to keep track of users' atomic and ephemeral actions (like the whole authorisation process under the "Authorization Code Grant" method, described in RFC 6749, section 4.1). For the user's authentication process, it is mandatory to use Two-factor authentication (Time-based One-time Password).

Additionally, the application supports the use of Hashicorp's Vault in order to obtain configuration information and secrets. It is planned to use Vault as a way to store clients keys and secrets, if the OAuth client application supports it.

It is not planned to implement all authorisation methods described in RFC 6749 but sections 4.1 and 4.3, the "Resource Owner Password Credentials Grant".

Space is based on a set of feature flags enabled/disabled through the Redis store.

Setup & running

Space is build on top of Golang and Node.js; both are manageable on top of asdf – a .tool-versions file is already provided. Space also uses Redis and Postgres as data stores – and optionally Vault. Please make sure to place this project inside the $GOPATH (a symbolic link could solve this or simply go getting this like $ go get or to set the GO111MODULE=on env var. A .env file is used to load environment information for the application – .env is already available. The application needs a PORT env var in order to setup its socket (it is automatically provided by goreman).

In order to setup the application, additional configuration is necessary. That could be delivered through Vault or through a local .config.local.json file. If you plan to use Vault, you need to fill the .config.yml file, according to the .config.sample.yml, and store a k/v secret according to the .config.local.sample.json. If don't plan to use Vault, just create a .config.local.json file according to .config.local.sample.json. The application will try to load the .config.local.json by default, if it is available; otherwise, it will attempt to load it from Vault. At least one of these configuration schemes is necessary.

Once the configuration is complete, the following commands will run the server application locally:

$ npm install && npm run build
$ go get
$ goreman start
$ open http://localhost:8080

If you're planning to setup it for development, ideally you should run:

$ bin/dev-setup
$ go get
$ goreman start
$ open http://localhost:8080

Testing & Linting

For testing (plus code coverage) and linting, you could run:

$ go get -u
$ SPACE_ENV=testing go test -race -coverprofile=c.out ./...
$ go tool cover -html=c.out -o coverage.html
$ golint ./...

Deployment through a docker container

The following commands will create a docker image and create a docker container:

$ docker build -t earaujoassis/space .
$ docker run -d -p 8080:8080 earaujoassis/space
$ docker images --quiet --filter=dangling=true | xargs docker rmi

The project also provides a docker-compose setup, which could be setup through:

$ docker-compose up --build


If you have any question, comment or an issue, please take a look at /issues.


MIT License © Ewerton Assis


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