hadoop ImpersonationProvider 源码
haddop ImpersonationProvider 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/authorize/ImpersonationProvider.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.authorize;
import java.net.InetAddress;
import java.net.UnknownHostException;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configurable;
import org.apache.hadoop.security.UserGroupInformation;
@InterfaceStability.Unstable
@InterfaceAudience.Public
public interface ImpersonationProvider extends Configurable {
/**
* Specifies the configuration prefix for the proxy user properties and
* initializes the provider.
*
* @param configurationPrefix the configuration prefix for the proxy user
* properties
*/
public void init(String configurationPrefix);
/**
* Authorize the superuser which is doing doAs.
* {@link #authorize(UserGroupInformation, InetAddress)} should
* be preferred to avoid possibly re-resolving the ip address.
* @param user ugi of the effective or proxy user which contains a real user.
* @param remoteAddress the ip address of client.
* @throws AuthorizationException Authorization Exception.
*/
default void authorize(UserGroupInformation user, String remoteAddress)
throws AuthorizationException {
try {
authorize(user, InetAddress.getByName(remoteAddress));
} catch (UnknownHostException e) {
throw new AuthorizationException(e);
}
}
/**
* Authorize the superuser which is doing doAs.
*
* @param user ugi of the effective or proxy user which contains a real user
* @param remoteAddress the ip address of client
* @throws AuthorizationException Authorization Exception.
*/
void authorize(UserGroupInformation user, InetAddress remoteAddress)
throws AuthorizationException;
}
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