/*******************************************************************************
*
* Copyright (c) 2004-2009 Oracle Corporation.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
*
* Kohsuke Kawaguchi
*
*
*******************************************************************************/
package hudson.security;
import org.springframework.dao.DataAccessException;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
/**
* {@link UserDetailsService} proxy that delegates to another instance.
*
* @author Kohsuke Kawaguchi
*/
public class UserDetailsServiceProxy implements UserDetailsService {
private volatile UserDetailsService delegate;
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException, DataAccessException {
UserDetailsService uds = delegate; // fix the reference for concurrency support
if (uds == null) {
throw new UserMayOrMayNotExistException(Messages.UserDetailsServiceProxy_UnableToQuery(username));
}
return uds.loadUserByUsername(username);
}
public void setDelegate(UserDetailsService core) {
this.delegate = core;
}
}