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Rackspace Authentication (jclouds)

This is a simple test to authenticate to Rackspace.

  • @jclouds
Authenticate (jclouds)
I am setup to run example code for jclouds
I execute the following code:
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package org.jclouds.examples.rackspace;

import java.io.Closeable;
import java.util.Properties;

import org.jclouds.ContextBuilder;
import org.jclouds.compute.ComputeService;
import org.jclouds.compute.ComputeServiceContext;
import org.jclouds.openstack.keystone.v2_0.config.CredentialTypes;
import org.jclouds.openstack.keystone.v2_0.config.KeystoneProperties;
import org.jclouds.openstack.nova.v2_0.NovaApi;
import org.jclouds.openstack.nova.v2_0.NovaAsyncApi;
import org.jclouds.rest.RestContext;

 * To authenticate using jclouds you need to provide your credentials to a Context as in the init() method below. 
 * Authentication occurs on your first actual interaction with the Rackspace Cloud (i.e. the very first time 
 * you call a method that needs to talk to the cloud). Once you are authenticated you receive a token that is
 * cached and you won't reauthenticate for subsequent calls. If your token expires before the JVM quits, jclouds
 * will automatically handle reauthentication and get a new token for you.
 * If authentication doesn't work, the call will result in an org.jclouds.rest.AuthorizationException
 * This example demostrates how you would authenticate via username and password or API key. The default is
 * authentication via API key, which is used in the rest of the examples in this package.
 * @author Everett Toews
public class Authentication implements Closeable {
   private ComputeService compute;
   private RestContext<NovaApi, NovaAsyncApi> nova;

    * To get a username and API key see http://www.jclouds.org/documentation/quickstart/rackspace/
    * The first argument (args[0]) must be your username
    * The second argument (args[1]) must be your API key or password
    * [Optional] The third argument (args[2]) must be "password" if password authentication is used, 
    *            otherwise default to using API key.
   public static void main(String[] args) {
      Authentication authentication = new Authentication();

      try {
      catch (Exception e) {
      finally {

   private void init(String[] args) {
      // The provider configures jclouds To use the Rackspace Cloud (US)
      // To use the Rackspace Cloud (UK) set the provider to "rackspace-cloudservers-uk"
      String provider = "rackspace-cloudservers-us";

      String username = System.getenv('RAX_USERNAME');
      String credential = System.getenv('RAX_API_KEY');

      Properties overrides = new Properties();

      if (args.length == 3 && "password".equals(args[2])) {
         overrides.put(KeystoneProperties.CREDENTIAL_TYPE, CredentialTypes.PASSWORD_CREDENTIALS);

      ComputeServiceContext context = ContextBuilder.newBuilder(provider)
            .credentials(username, credential)
      compute = context.getComputeService();
      nova = context.unwrap();

    * Calling getConfiguredZones() causes jclouds to authenticate. If authentication doesn't work, the call to
    * getConfiguredZones() will result in an org.jclouds.rest.AuthorizationException
   private void authenticateOnCall() {

    * Always close your service when you're done with it.
   public void close() {
      if (compute != null) {
the output should match

Last published about 7 years ago by Max Lincoln.