gistfile1.txt

public class Authenticator extends DefaultTask {
	public static final String USER = "JBOSS_NEXUS_USERNAME";
	public static final String PASS = "JBOSS_NEXUS_PASSWORD";

	private Set<RemoteRepository> nexusRepositories = new HashSet<RemoteRepository>();

	void addRepository(RemoteRepository remoteRepository) {
		nexusRepositories.add( remoteRepository );
	}

	@TaskAction
	public void configureNexusAuthentication() {
		Authentication authentication = null;
		if ( getProject().hasProperty( USER ) ) {
			authentication = new Authentication();
			authentication.setUserName( (String) getProject().getProperties().get( USER ) );
		}
		if ( getProject().hasProperty( PASS ) ) {
			if ( authentication == null ) {
				authentication = new Authentication();
				authentication.setPassword( (String) getProject().getProperties().get( PASS ) );
			}
		}

		if ( authentication != null ) {
			for ( RemoteRepository remoteRepository : nexusRepositories ) {
				remoteRepository.addAuthentication( authentication );
			}
		}
		else {
			if ( ! nexusRepositories.isEmpty() ) {
				getLogger().warn( "Unable to locate JBoss Nexus username/password; upload will most likely fail" );
			}
		}
	}
}