org.elasticsearch.hadoop.mr.security.HadoopUserProvider Maven / Gradle / Ivy
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.hadoop.mr.security;
import java.io.IOException;
import org.apache.hadoop.security.UserGroupInformation;
import org.elasticsearch.hadoop.EsHadoopException;
import org.elasticsearch.hadoop.cfg.Settings;
import org.elasticsearch.hadoop.security.User;
import org.elasticsearch.hadoop.security.UserProvider;
/**
* Retrieves the currently logged in Hadoop UGI. Note: If none exists, this will attempt a login.
*/
public class HadoopUserProvider extends UserProvider {
/**
* @deprecated Use {@link UserProvider#create(Settings)} instead, or if it is important that you
* explicitly create a HadoopUserProvider, then use {@link HadoopUserProvider#create(Settings)}
* instead
*/
public HadoopUserProvider() {
super();
}
public static HadoopUserProvider create(Settings settings) {
@SuppressWarnings("deprecation")
HadoopUserProvider provider = new HadoopUserProvider();
provider.setSettings(settings);
return provider;
}
@Override
public User getUser() {
try {
return new HadoopUser(UserGroupInformation.getCurrentUser(), getSettings());
} catch (IOException e) {
throw new EsHadoopException("Could not retrieve the current user", e);
}
}
}