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• Authentication.java

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org.eclipse.aether.repository.Authentication Maven / Gradle / Ivy

/*******************************************************************************
 * Copyright (c) 2010, 2012 Sonatype, Inc.
 * 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:
 *    Sonatype, Inc. - initial API and implementation
 *******************************************************************************/
package org.eclipse.aether.repository;

import java.util.Map;

/**
 * The authentication to use for accessing a protected resource. This acts basically as an extensible callback mechanism
 * from which network operations can request authentication data like username and password when needed.
 */
public interface Authentication
{

    /**
     * Fills the given authentication context with the data from this authentication callback. To do so, implementors
     * have to call {@link AuthenticationContext#put(String, Object)}. 

     * 

     * The {@code key} parameter supplied to this method acts merely as a hint for interactive callbacks that want to
     * prompt the user for only that authentication data which is required. Implementations are free to ignore this
     * parameter and put all the data they have into the authentication context at once.
     * 
     * @param context The authentication context to populate, must not be {@code null}.
     * @param key The key denoting a specific piece of authentication data that is being requested for a network
     *            operation, may be {@code null}.
     * @param data Any (read-only) extra data in form of key value pairs that might be useful when getting the
     *            authentication data, may be {@code null}.
     */
    void fill( AuthenticationContext context, String key, Map data );

    /**
     * Updates the given digest with data from this authentication callback. To do so, implementors have to call the
     * {@code update()} methods in {@link AuthenticationDigest}.
     * 
     * @param digest The digest to update, must not be {@code null}.
     */
    void digest( AuthenticationDigest digest );

}