org.apache.hadoop.hdfs.web.oauth2.ConfCredentialBasedAccessTokenProvider Maven / Gradle / Ivy
/*
* 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.Configuration;
import org.apache.hadoop.util.Timer;
import static org.apache.hadoop.hdfs.web.oauth2.Utils.notNull;
/**
* Obtain an access token via a a credential (provided through the
* Configuration) using the
*
* Client Credentials Grant workflow.
*/
@InterfaceAudience.Public
@InterfaceStability.Evolving
public class ConfCredentialBasedAccessTokenProvider
extends CredentialBasedAccessTokenProvider {
private String credential;
public ConfCredentialBasedAccessTokenProvider() {
}
public ConfCredentialBasedAccessTokenProvider(Timer timer) {
super(timer);
}
@Override
public void setConf(Configuration conf) {
super.setConf(conf);
credential = notNull(conf, OAUTH_CREDENTIAL_KEY);
}
@Override
public String getCredential() {
if(credential == null) {
throw new IllegalArgumentException("Credential has not been " +
"provided in configuration");
}
return credential;
}
}