joshelser commented on a change in pull request #884: HBASE-23347 Allowable custom authentication methods for RPCs URL: https://github.com/apache/hbase/pull/884#discussion_r358458185
########## File path: hbase-client/src/main/java/org/apache/hadoop/hbase/security/provider/DefaultProviderSelector.java ########## @@ -0,0 +1,121 @@ +/* + * 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.hbase.security.provider; + +import java.util.Map; +import java.util.Objects; +import java.util.concurrent.locks.ReadWriteLock; +import java.util.concurrent.locks.ReentrantReadWriteLock; + +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.hbase.security.User; +import org.apache.hadoop.hbase.util.Pair; +import org.apache.hadoop.io.Text; +import org.apache.hadoop.security.UserGroupInformation; +import org.apache.hadoop.security.token.Token; +import org.apache.hadoop.security.token.TokenIdentifier; +import org.apache.yetus.audience.InterfaceAudience; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +@InterfaceAudience.Private +public class DefaultProviderSelector implements AuthenticationProviderSelector { + private static final Logger LOG = LoggerFactory.getLogger(DefaultProviderSelector.class); + private final ReadWriteLock LOCK = new ReentrantReadWriteLock(); + + Configuration conf; + SimpleSaslClientAuthenticationProvider simpleAuth = null; + GssSaslClientAuthenticationProvider krbAuth = null; + DigestSaslClientAuthenticationProvider digestAuth = null; + + @Override + public void configure(Configuration conf, Map<Byte,SaslClientAuthenticationProvider> providers) { + try { + LOCK.writeLock().lock(); + if (this.conf != null) { + throw new IllegalStateException("configure() should only be called once"); + } + this.conf = Objects.requireNonNull(conf); + } finally { + LOCK.writeLock().unlock(); + } + + for (SaslClientAuthenticationProvider provider : Objects.requireNonNull(providers).values()) { + if (provider instanceof SimpleSaslClientAuthenticationProvider) { + if (simpleAuth != null) { + throw new IllegalStateException( + "Encountered multiple SimpleSaslClientAuthenticationProvider instances"); + } + simpleAuth = (SimpleSaslClientAuthenticationProvider) provider; + } else if (provider instanceof GssSaslClientAuthenticationProvider) { + if (krbAuth != null) { + throw new IllegalStateException( + "Encountered multiple GssSaslClientAuthenticationProvider instances"); + } + krbAuth = (GssSaslClientAuthenticationProvider) provider; + } else if (provider instanceof DigestSaslClientAuthenticationProvider) { + if (digestAuth != null) { + throw new IllegalStateException( + "Encountered multiple DigestSaslClientAuthenticationProvider instances"); + } + digestAuth = (DigestSaslClientAuthenticationProvider) provider; + } else { + LOG.warn("Ignoring unknown SaslClientAuthenticationProvider: {}", provider.getClass()); Review comment: HBase can't know how/when to use a custom-built authentication token. You provide your own implementation of a `TokenSelector`. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
