/**
* 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.server.namenode.ha;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.retry.FailoverProxyProvider;
public abstract class AbstractNNFailoverProxyProvider<T> implements
FailoverProxyProvider <T> {
protected AtomicBoolean fallbackToSimpleAuth;
/**
* Inquire whether logical HA URI is used for the implementation. If it is
* used, a special token handling may be needed to make sure a token acquired
* from a node in the HA pair can be used against the other node.
*
* @return true if logical HA URI is used. false, if not used.
*/
public abstract boolean useLogicalURI();
/**
* Set for tracking if a secure client falls back to simple auth. This method
* is synchronized only to stifle a Findbugs warning.
*
* @param fallbackToSimpleAuth - set to true or false during this method to
* indicate if a secure client falls back to simple auth
*/
public synchronized void setFallbackToSimpleAuth(
AtomicBoolean fallbackToSimpleAuth) {
this.fallbackToSimpleAuth = fallbackToSimpleAuth;
}
}