| /* |
| * 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.solr.common.cloud; |
| |
| import java.util.List; |
| |
| import org.apache.zookeeper.data.ACL; |
| |
| /** |
| * {@link ZkACLProvider} capable of returning a different set of |
| * {@link ACL}s for security-related znodes (default: subtree under /security) |
| * vs non-security-related znodes. |
| */ |
| public abstract class SecurityAwareZkACLProvider implements ZkACLProvider { |
| public static final String SECURITY_ZNODE_PATH = "/security"; |
| |
| private List<ACL> nonSecurityACLsToAdd; |
| private List<ACL> securityACLsToAdd; |
| |
| |
| @Override |
| public List<ACL> getACLsToAdd(String zNodePath) { |
| if (isSecurityZNodePath(zNodePath)) { |
| return getSecurityACLsToAdd(); |
| } else { |
| return getNonSecurityACLsToAdd(); |
| } |
| } |
| |
| protected boolean isSecurityZNodePath(String zNodePath) { |
| if (zNodePath != null |
| && (zNodePath.equals(SECURITY_ZNODE_PATH) || zNodePath.startsWith(SECURITY_ZNODE_PATH + "/"))) { |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * @return Set of ACLs to return for non-security related znodes |
| */ |
| protected abstract List<ACL> createNonSecurityACLsToAdd(); |
| |
| /** |
| * @return Set of ACLs to return security-related znodes |
| */ |
| protected abstract List<ACL> createSecurityACLsToAdd(); |
| |
| private List<ACL> getNonSecurityACLsToAdd() { |
| if (nonSecurityACLsToAdd == null) { |
| synchronized (this) { |
| if (nonSecurityACLsToAdd == null) nonSecurityACLsToAdd = createNonSecurityACLsToAdd(); |
| } |
| } |
| return nonSecurityACLsToAdd; |
| } |
| |
| private List<ACL> getSecurityACLsToAdd() { |
| if (securityACLsToAdd == null) { |
| synchronized (this) { |
| if (securityACLsToAdd == null) securityACLsToAdd = createSecurityACLsToAdd(); |
| } |
| } |
| return securityACLsToAdd; |
| } |
| } |