hadoop AccessTokenProvider 源码
haddop AccessTokenProvider 代码
文件路径：/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/web/oauth2/AccessTokenProvider.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.hdfs.web.oauth2;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configurable;
import org.apache.hadoop.conf.Configuration;
import java.io.IOException;
/**
* Provide an OAuth2 access token to be used to authenticate http calls in
* WebHDFS.
*/
@InterfaceAudience.Public
@InterfaceStability.Evolving
public abstract class AccessTokenProvider implements Configurable {
private Configuration conf;
/**
* Obtain the access token that should be added to http connection's header.
* Will be called for each connection, so implementations should be
* performant. Implementations are responsible for any refreshing of
* the token.
*
* @return Access token to be added to connection header.
*/
public abstract String getAccessToken() throws IOException;
/**
* Return the conf.
*
* @return the conf.
*/
@Override
public Configuration getConf() {
return conf;
}
/**
* Set the conf.
*
* @param configuration New configuration.
*/
@Override
public void setConf(Configuration configuration) {
this.conf = configuration;
}
}
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