kafka CredentialCache 源码

  • 2022-10-20
  • 浏览 (454)

kafka CredentialCache 代码

文件路径:/clients/src/main/java/org/apache/kafka/common/security/authenticator/CredentialCache.java

/*
 * 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.kafka.common.security.authenticator;

import java.util.concurrent.ConcurrentHashMap;

public class CredentialCache {

    private final ConcurrentHashMap<String, Cache<? extends Object>> cacheMap = new ConcurrentHashMap<>();

    public <C> Cache<C> createCache(String mechanism, Class<C> credentialClass) {
        Cache<C> cache = new Cache<>(credentialClass);
        @SuppressWarnings("unchecked")
        Cache<C> oldCache = (Cache<C>) cacheMap.putIfAbsent(mechanism, cache);
        return oldCache == null ? cache : oldCache;
    }

    @SuppressWarnings("unchecked")
    public <C> Cache<C> cache(String mechanism, Class<C> credentialClass) {
        Cache<?> cache = cacheMap.get(mechanism);
        if (cache != null) {
            if (cache.credentialClass() != credentialClass)
                throw new IllegalArgumentException("Invalid credential class " + credentialClass + ", expected " + cache.credentialClass());
            return (Cache<C>) cache;
        } else
            return null;
    }

    public static class Cache<C> {
        private final Class<C> credentialClass;
        private final ConcurrentHashMap<String, C> credentials;

        public Cache(Class<C> credentialClass) {
            this.credentialClass = credentialClass;
            this.credentials = new ConcurrentHashMap<>();
        }

        public C get(String username) {
            return credentials.get(username);
        }

        public C put(String username, C credential) {
            return credentials.put(username, credential);
        }

        public C remove(String username) {
            return credentials.remove(username);
        }

        public Class<C> credentialClass() {
            return credentialClass;
        }
    }
}

相关信息

kafka 源码目录

相关文章

kafka AbstractLogin 源码

kafka DefaultKafkaPrincipalBuilder 源码

kafka DefaultLogin 源码

kafka LoginManager 源码

kafka SaslClientAuthenticator 源码

kafka SaslClientCallbackHandler 源码

kafka SaslInternalConfigs 源码

kafka SaslServerAuthenticator 源码

kafka SaslServerCallbackHandler 源码

0  赞