Class PseudoAuthenticator

  extended by
All Implemented Interfaces:

public class PseudoAuthenticator
extends Object
implements Authenticator

The PseudoAuthenticator implementation provides an authentication equivalent to Hadoop's Simple authentication, it trusts the value of the '' Java System property.

The '' value is propagated using an additional query string parameter USER_NAME ('').

Field Summary
static String USER_NAME
          Name of the additional parameter that carries the '' value.
Constructor Summary
Method Summary
 void authenticate(URL url, AuthenticatedURL.Token token)
          Performs simple authentication against the specified URL.
protected  String getUserName()
          Returns the current user name.
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail


public static final String USER_NAME
Name of the additional parameter that carries the '' value.

See Also:
Constant Field Values
Constructor Detail


public PseudoAuthenticator()
Method Detail


public void authenticate(URL url,
                         AuthenticatedURL.Token token)
                  throws IOException,
Performs simple authentication against the specified URL.

If a token is given it does a NOP and returns the given token.

If no token is given, it will perform an HTTP OPTIONS request injecting an additional parameter USER_NAME in the query string with the value returned by the getUserName() method.

If the response is successful it will update the authentication token.

Specified by:
authenticate in interface Authenticator
url - the URl to authenticate against.
token - the authencation token being used for the user.
IOException - if an IO error occurred.
AuthenticationException - if an authentication error occurred.


protected String getUserName()
Returns the current user name.

This implementation returns the value of the Java system property ''

the current user name.

Copyright © 2009 The Apache Software Foundation