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package com.sun.jersey.oauth.server.spi;

import java.util.List;
import java.util.Map;

/** Contract for a provider that supports managing OAuth tokens and consumer secrets.
 * To add an {@code OAuthProvider} implementation, annotate the implementation
 * class with {@code @Provider}.
 *
 * @author Martin Matula
 */
public interface OAuthProvider {

    /** Gets consumer corresponding to a given consumer key.
     *
     * @param consumerKey consumer key
     * @return corresponding consumer secret or {@literal null} if no consumer with the given key is known
     */
    OAuthConsumer getConsumer(String consumerKey);

    /** Creates a new request token for a given consumerKey.
     *
     * @param consumerKey consumer key to create a request token for
     * @param callbackUrl callback url for this request token request
     * @param attributes additional service provider-specific parameters
     *      (this can be used to indicate what level of access is requested
     *      - i.e. readonly, or r/w, etc.)
     * @return new request token
     */
    OAuthToken newRequestToken(String consumerKey, String callbackUrl, Map> attributes);

    /** Returns the request token by the consumer key and token value.
     *
     * @param token request token value
     * @return request token or {@literal null} if no such token corresponding to a given
     * consumer key is found
     */
    OAuthToken getRequestToken(String token);

    /** Creates a new access token. This method must validate the passed arguments
     * and return {@literal null} if any of them is invalid.
     *
     * @param requestToken authorized request token
     * @param verifier verifier passed to the callback after authorization
     * @return new access token or null if the arguments are invalid (e.g. there
     * is no such request token as in the argument, or the verifier does not match)
     */
    OAuthToken newAccessToken(OAuthToken requestToken, String verifier);

    /** Returns the access token by the consumer key and token value.
     *
     * @param token access token value
     * @return access token or {@literal null} if no such found
     */
    OAuthToken getAccessToken(String token);
}