| /* |
| * 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.ranger.authorization.elasticsearch.authorizer; |
| |
| import java.util.List; |
| |
| import org.apache.logging.log4j.Logger; |
| import org.apache.ranger.plugin.classloader.RangerPluginClassLoader; |
| import org.elasticsearch.common.logging.ESLoggerFactory; |
| |
| public class RangerElasticsearchAuthorizer { |
| |
| private static final Logger LOG = ESLoggerFactory.getLogger(RangerElasticsearchAuthorizer.class); |
| |
| private static final String RANGER_PLUGIN_TYPE = "elasticsearch"; |
| |
| private static final String RANGER_ELASTICSEARCH_AUTHORIZER_IMPL_CLASSNAME = "org.apache.ranger.authorization.elasticsearch.authorizer.RangerElasticsearchAuthorizer"; |
| |
| private static RangerPluginClassLoader rangerPluginClassLoader = null; |
| |
| private static ClassLoader esClassLoader = null; |
| |
| private RangerElasticsearchAccessControl rangerElasticsearchAccessControl = null; |
| |
| public RangerElasticsearchAuthorizer() { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("==> RangerElasticsearchAuthorizer.RangerElasticsearchAuthorizer()"); |
| } |
| |
| this.init(); |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("<== RangerElasticsearchAuthorizer.RangerElasticsearchAuthorizer()"); |
| } |
| } |
| |
| public void init() { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("==> RangerElasticsearchAuthorizer.init()"); |
| } |
| |
| try { |
| |
| // In elasticsearch this.getClass().getClassLoader() is FactoryURLClassLoader, |
| // but Thread.currentThread().getContextClassLoader() is AppClassLoader. |
| esClassLoader = Thread.currentThread().getContextClassLoader(); |
| Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader()); |
| |
| rangerPluginClassLoader = RangerPluginClassLoader.getInstance(RANGER_PLUGIN_TYPE, this.getClass()); |
| Thread.currentThread().setContextClassLoader(esClassLoader); |
| |
| @SuppressWarnings("unchecked") |
| Class<RangerElasticsearchAccessControl> cls = (Class<RangerElasticsearchAccessControl>) Class |
| .forName(RANGER_ELASTICSEARCH_AUTHORIZER_IMPL_CLASSNAME, true, rangerPluginClassLoader); |
| |
| activatePluginClassLoader(); |
| |
| rangerElasticsearchAccessControl = cls.newInstance(); |
| } catch (Exception e) { |
| LOG.error("Error Enabling RangerElasticsearchAuthorizer", e); |
| } finally { |
| deactivatePluginClassLoader(); |
| } |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("<== RangerElasticsearchAuthorizer.init()"); |
| } |
| } |
| |
| public boolean checkPermission(String user, List<String> groups, String index, String action, |
| String clientIPAddress) { |
| boolean ret = false; |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("==> RangerElasticsearchAuthorizer.checkPermission()"); |
| } |
| |
| try { |
| activatePluginClassLoader(); |
| |
| ret = rangerElasticsearchAccessControl.checkPermission(user, groups, index, action, clientIPAddress); |
| } finally { |
| deactivatePluginClassLoader(); |
| } |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("<== RangerElasticsearchAuthorizer.checkPermission()"); |
| } |
| |
| return ret; |
| } |
| |
| private void activatePluginClassLoader() { |
| if (rangerPluginClassLoader != null) { |
| Thread.currentThread().setContextClassLoader(rangerPluginClassLoader); |
| } |
| } |
| |
| private void deactivatePluginClassLoader() { |
| if (esClassLoader != null) { |
| Thread.currentThread().setContextClassLoader(esClassLoader); |
| } |
| } |
| } |