| /* |
| * 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.cassandra.auth; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import javax.annotation.concurrent.ThreadSafe; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.common.base.Preconditions; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| @ThreadSafe |
| public class AuthCacheService |
| { |
| private static final Logger logger = LoggerFactory.getLogger(AuthCacheService.class); |
| public static final AuthCacheService instance = new AuthCacheService(); |
| |
| private final Set<AuthCache<?, ?>> caches = new HashSet<>(); |
| private static final AtomicBoolean cachesRegistered = new AtomicBoolean(false); |
| |
| public synchronized void register(AuthCache<?, ?> cache) |
| { |
| Preconditions.checkNotNull(cache); |
| caches.add(cache); |
| } |
| |
| public synchronized void unregister(AuthCache<?, ?> cache) |
| { |
| Preconditions.checkNotNull(cache); |
| caches.remove(cache); |
| } |
| |
| public synchronized void warmCaches() |
| { |
| logger.info("Initiating bulk load of {} auth cache(s)", caches.size()); |
| for (AuthCache<?, ?> cache : caches) |
| { |
| cache.warm(); |
| } |
| } |
| |
| /** |
| * NOTE: Can only be called once per instance run. |
| * |
| * We have a couple of static initializer functions to create caches scattered across various classes, some solo |
| * and some with multiple member variables. As we expect these caches to be created and initialized in one logical |
| * block, we tie them together and use them here. |
| * |
| * Note: We also register the PasswordAuthenticator cache with the {@link AuthCacheService} in it's constructor |
| */ |
| @VisibleForTesting |
| public static void initializeAndRegisterCaches() |
| { |
| if (!cachesRegistered.getAndSet(true)) |
| { |
| AuthenticatedUser.init(); |
| Roles.init(); |
| } |
| } |
| } |