001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018 019 package org.apache.hadoop.fs.http.client; 020 021 022 import org.apache.hadoop.security.authentication.client.Authenticator; 023 import org.apache.hadoop.security.authentication.client.KerberosAuthenticator; 024 025 /** 026 * A <code>KerberosAuthenticator</code> subclass that fallback to 027 * {@link HttpPseudoAuthenticator}. 028 */ 029 public class HttpKerberosAuthenticator extends KerberosAuthenticator { 030 031 /** 032 * Returns the fallback authenticator if the server does not use 033 * Kerberos SPNEGO HTTP authentication. 034 * 035 * @return a {@link HttpPseudoAuthenticator} instance. 036 */ 037 @Override 038 protected Authenticator getFallBackAuthenticator() { 039 return new HttpPseudoAuthenticator(); 040 } 041 }