java-tokenclient-usage

Description

This sample is a Java back-end application running on the Cloud Foundry. On incoming requests it reads credentials from the VCAP_SERVICES environment variable and requests a new access token via client credentials token flow provided by the Token Client library.

Deployment on Cloud Foundry

To deploy the application, the following steps are required:

• Compile the Java application
• Create a xsuaa service instance
• Configure the manifest
• Deploy the application
• Access the application

Compile the Java application

Run maven to package the application

mvn clean package

Create the xsuaa service instance

Use the xs-security.json to define the authentication settings and create a service instance

cf create-service xsuaa application xsuaa-token-client -c xs-security.json

Configure the manifest

The vars contains hosts and paths that need to be adopted.

Deploy the application

Deploy the application using cf push. It will expect 1 GB of free memory quota.

cf push --vars-file ../vars.yml

Access the application

To access the application go to https://java-tokenclient-usage-<<ID>>.<<LANDSCAPE_APPS_DOMAIN>>/hello-token-client You should see something like this:

Access-Token: eyJhbGciOiJSUzI1NiIsImprdSI6Imh0dHBzOi8vYzUyOTU0MDB0cmlhbC5hdXRoZW50aWN...
Access-Token-Payload: {"jti":"a2ea5313e37345709985836b1400305f","ext_attr":{"enhancer":"XSUAA","zdn":"c5295400trial"},...
Expired-At: Wed Oct 16 13:37:00 UTC 2019

Clean-Up

Finally delete your application and your service instances using the following commands:

cf delete -f java-tokenclient-usage
cf delete-service -f xsuaa-token-client