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; 022import javax.security.sasl.SaslServer; 023import org.apache.hadoop.hbase.HBaseInterfaceAudience; 024import org.apache.hadoop.security.UserGroupInformation; 025import org.apache.yetus.audience.InterfaceAudience; 026import org.apache.yetus.audience.InterfaceStability; 027 028/** 029 * Wrapper around a SaslServer which provides the last user attempting to authenticate via SASL, if 030 * the server/mechanism allow figuring that out. 031 */ 032@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.AUTHENTICATION) 033@InterfaceStability.Evolving 034public class AttemptingUserProvidingSaslServer { 035 private final Supplier<UserGroupInformation> producer; 036 private final SaslServer saslServer; 037 038 public AttemptingUserProvidingSaslServer(SaslServer saslServer, 039 Supplier<UserGroupInformation> producer) { 040 this.saslServer = saslServer; 041 this.producer = producer; 042 } 043 044 public SaslServer getServer() { 045 return saslServer; 046 } 047 048 public Optional<UserGroupInformation> getAttemptingUser() { 049 return Optional.ofNullable(producer.get()); 050 } 051}