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CloudFoundry User Account and Authentication (UAA) Server


Quick Start

If this works you are in business:

$ git clone
$ cd uaa
$ mvn install

Each module has a mvn tomcat:run target to run individually, or you could import them as projects into STS (use 2.8.0 or better if you can). The apps all work together the apps running on the same port (8080) as /uaa, /app and /api.

Demo of command line usage

First run the uaa server as described above:

$ cd uaa
$ mvn tomcat:run

Then start another terminal and from the project base directory, run:

$ ./ "localhost:8080/uaa"

And hit return twice to accept the default username and password.

This authenticates and obtains an access token from the server using the OAuth2 implicit grant, similar to the approach intended for a client like VMC. The token is stored in the file .access_token.

Now kill the uaa server and run the api server (which starts the uaa server as well):

$ cd samples/api
$ mvn tomcat:run

And then (from the base directory) execute:

$ ./ http://localhost:8080/api/apps

which should return a JSON array of (pretend) running applications.

Integration tests

With all apps deployed into a running server on port 8080 the tests will include integration tests (a check is done before each test that the app is running). You can deploy them in your IDE or using the command line with mvn tomcat:run.

For individual modules, or for the whole project, you can also run integration tests from the command line in one go with

$ mvn integration-test

(This might require an initial mvn install from the parent directory to get the wars in your local repo first.)


There are actually several projects here, the main uaa server application and some samples:

  1. uaa is the actual UAA server

  2. api (sample) is an OAuth2 resource service which returns a mock list of deployed apps

  3. app (sample) is a user application that uses both of the above

In CloudFoundry terms

  • uaa provides an authentication service plus authorized delegation for back-end services and apps (by issuing OAuth2 access tokens).

  • api is - it's a service which provides resources which other applications may wish to access on behalf of the resource owner (the end user).

  • app is or - a webapp that needs single sign on and access to the api service on behalf of users.

UAA Server

The authentication service is uaa. It's a plain Spring MVC webapp. Deploy as normal in Tomcat or your container of choice, or execute mvn tomcat:run to run it directly from uaa directory in the source tree. When running with maven it listen on port 8080.

It supports the APIs defined in the UAA-APIs document. To summarise:

  1. The OAuth2 /authorize and /token endpoints

  2. A /login_info endpoint to allow querying for required login prompts

  3. A /check_token endpoint, to allow resource servers to obtain information about an access token submitted by an OAuth2 client.

  4. SCIM user provisioning endpoint

  5. OpenID connect endpoints to support authentication /userinfo and /check_id (todo). Implemented roughly enough to get it working (so /app authenticates here), but not to meet the spec.

Authentication can be performed by command line clients by submitting credentials directly to the /authorize endpoint (as described in UAA-API doc). There is an ImplicitAccessTokenProvider in Spring Security OAuth that can do the heavy lifting if your client is Java.

By default uaa will launch with a context root /uaa. There is a Maven profile vcap to launch with context root /.

User Account Data

The default is to use an in-memory, hash-based user store that is pre-populated with some test users: e.g. dale has password password and marissa has password koala.

To use a RDBMS for user data activate the Spring profiles jdbc and one of hsqldb or postgresql. The hsqldb profile will start up with an in-memory RDBMS by default. Warning: the database will start empty, so no users can log in until the first account is created.

The active profiles can be configured by passing the parameter to the JVM. For, example to run with an embedded HSQL database:

 mvn,jdbc tomcat:run

Or to use PostgreSQL instead of HSQL:

 mvn,jdbc,postgresql tomcat:run

To launch in a microcloud type environment you need the SCIM user endpoints to be unsecure so that a user can create an account and set its password to bootstrap the system. For this use the Spring profile private. The opposite is !private which needs to be specified explicitly if the any other profiles are active.

To launch in legacy mode with the cloud controller as the authentication and token source use profile legacy. The opposite is !legacy which needs to be specified explicitly if the any other profiles are active.

The API Application

An example resource server. It hosts a service which returns a list of mock applications under /apps.

Run it using mvn tomcat:run from the api directory (once all other tomcat processes have been shutdown). This will deploy the app to a Tomcat manager on port 8080.

The App Application

This is a user interface app (primarily aimed at browsers) that uses OpenId Connect for authentication (i.e. SSO) and OAuth2 for access grants. It authenticates with the Auth service, and then accesses resources in the API service. Run it with mvn tomcat:run from the app directory (once all other tomcat processes have been shutdown).

Use Cases

  1. See all apps

    GET /app/apps

    browser is redirected through a series of authentication and access grant steps (which could be slimmed down to implicit steps not requiring user at some point), and then the photos are shown.

  2. See the currently logged in user details, a bag of attributes grabbed from the open id provider

    GET /app
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