content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.security.authentication.plain;
  
  import java.security.Provider;
  import javax.annotation.concurrent.ThreadSafe;
  
  /**
   * The Java SunSASL provider supports CRAM-MD5, DIGEST-MD5 and GSSAPI mechanisms on the server side.
   * When the SASL is using PLAIN mechanism, there is no support the SASL server. So there is a new
   * provider needed to register to support server-side PLAIN mechanism.
   * <p/>
   * Three basic steps to complete a SASL security provider:
   * <ol>
   * <li>Implements {@link PlainSaslServer} class which extends {@link javax.security.sasl.SaslServer}
   * interface</li>
   * <li>Provides {@link PlainSaslServer.Factory} class that implements
   * {@link javax.security.sasl.SaslServerFactory} interface</li>
   * <li>Provides a JCA provider that registers the factory</li>
   * </ol>
   */
  @ThreadSafe
  public final class PlainSaslServerProvider extends Provider {
    private static final long serialVersionUID = 4583558117355348638L;
  
    public static final String NAME = "PlainSasl";
    public static final String MECHANISM = "PLAIN";
    public static final double VERSION = 1.0;
  
    /**
     * Constructs a new provider for the SASL server when using the PLAIN mechanism.
     */
    public PlainSaslServerProvider() {
      super(NAME, VERSION, "Plain SASL server provider");
      put("SaslServerFactory." + MECHANISM, PlainSaslServer.Factory.class.getName());
    }
  }
  