spi-oauth

Service provider integration OAuth2 microservice.

About

OAuth2 protocol is the most commonly used way that allows users to authorize applications to communicate with service providers. spi-oauth to use this protocol to obtain service provider’s access tokens without the need for the user to provide us his login credentials.

This OAuth2 microservice would be responsible for:

• Initial redirection to the service provider
• Callback from the service provider
• Persistence of access token that was received from the service provider into the permanent backend (k8s secrets or Vault)
• Handling of negative authorization and error codes
• Creation or update of SPIAccessToken
• Successful redirection at the end

How to build

make docker-build docker-push Available paramters

• SPIS_IMAGE_TAG_BASE - the name of the image. Example quay.io/skabashn/service-provider-integration-oauth.
• SPIS_TAG_NAME - the tag of the image. Example $(git branch --show-current)'_'$(date '+%Y_%m_%d_%H_%M_%S').

How to run

The easiest way to run the SPI OAuth service is to deploy it together with the SPI operator.

Check out the SPI operator repository and run:

make install deploy SPIS_IMG=<...the image of the SPI OAuth service...>

replace the deploy target above with the specialization required for your target cluster, e.g. use deploy_minikube when deploying to Minikube.

HTTP API Endpoints

The OAuth service exposes 3 kinds of endpoints:

• /<service_provider>/authenticate (e.g. /github/authenticate) - the endpoint for initiating the OAuth flow with given service provider. This endpoint accepts either GET or POST request with the following attributes:

  • k8s_token - the token used to authenticate with the configured Kubernetes API server. This token must represent a user that is able to create SPIAccessTokenDataUpdate objects in the namespace for which the OAuth flow is being initiated.
  • state - the OAuth state as generated by the SPI operator

  Note that this endpoint sets a session cookie that must be available when the callback endpoint is called

• /<service_provider>/callback (e.g. /github/callback) - the endpoint to finish the OAuth flow to which the service provider redirects back.

• /token/<namespace>/<spiaccesstoken_name> - the endpoint using which one can manually upload the token data for given SPIAccessToken object.

  This POST endpoint accepts JSON object with the following structure:

  {
    "access_token": "string value of the access token",
    "token_type": "the type of the token", // currently ignored
    "refresh_token": "string value of the refresh token", // currently ignored
    "expiry": 42 // the date when the token expires represented as timestamp, currently ignored 
  }