001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.apache.hadoop.hbase.security.provider; 019 020import java.util.Optional; 021import java.util.function.Supplier; 022 023import javax.security.sasl.SaslServer; 024 025import org.apache.hadoop.hbase.HBaseInterfaceAudience; 026import org.apache.hadoop.security.UserGroupInformation; 027import org.apache.yetus.audience.InterfaceAudience; 028import org.apache.yetus.audience.InterfaceStability; 029 030/** 031 * Wrapper around a SaslServer which provides the last user attempting to authenticate via SASL, 032 * if the server/mechanism allow figuring that out. 033 */ 034@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.AUTHENTICATION) 035@InterfaceStability.Evolving 036public class AttemptingUserProvidingSaslServer { 037 private final Supplier<UserGroupInformation> producer; 038 private final SaslServer saslServer; 039 040 public AttemptingUserProvidingSaslServer( 041 SaslServer saslServer, Supplier<UserGroupInformation> producer) { 042 this.saslServer = saslServer; 043 this.producer = producer; 044 } 045 046 public SaslServer getServer() { 047 return saslServer; 048 } 049 050 public Optional<UserGroupInformation> getAttemptingUser() { 051 return Optional.ofNullable(producer.get()); 052 } 053}