hadoop KerberosDelegationTokenAuthenticator 源码
haddop KerberosDelegationTokenAuthenticator 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/token/delegation/web/KerberosDelegationTokenAuthenticator.java
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.security.token.delegation.web;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.security.authentication.client.Authenticator;
import org.apache.hadoop.security.authentication.client.KerberosAuthenticator;
/**
* The <code>KerberosDelegationTokenAuthenticator</code> provides support for
* Kerberos SPNEGO authentication mechanism and support for Hadoop Delegation
* Token operations.
* <p>
* It falls back to the {@link PseudoDelegationTokenAuthenticator} if the HTTP
* endpoint does not trigger a SPNEGO authentication
*/
@InterfaceAudience.Public
@InterfaceStability.Evolving
public class KerberosDelegationTokenAuthenticator
extends DelegationTokenAuthenticator {
public KerberosDelegationTokenAuthenticator() {
super(new KerberosAuthenticator() {
@Override
protected Authenticator getFallBackAuthenticator() {
return new PseudoDelegationTokenAuthenticator();
}
});
}
}
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