| /* |
| * 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.ozone.authorizer; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.ozone.security.acl.IAccessAuthorizer; |
| import org.apache.hadoop.ozone.security.acl.IOzoneObj; |
| import org.apache.hadoop.ozone.security.acl.OzoneAclException; |
| import org.apache.hadoop.ozone.security.acl.RequestContext; |
| import org.apache.ranger.plugin.classloader.RangerPluginClassLoader; |
| |
| public class RangerOzoneAuthorizer implements IAccessAuthorizer { |
| |
| private static final Log LOG = LogFactory.getLog(RangerOzoneAuthorizer.class); |
| |
| private static final String RANGER_PLUGIN_TYPE = "ozone"; |
| private static final String RANGER_OZONE_AUTHORIZER_IMPL_CLASSNAME = "org.apache.ranger.authorization.ozone.authorizer.RangerOzoneAuthorizer"; |
| private static RangerPluginClassLoader rangerPluginClassLoader = null; |
| private IAccessAuthorizer ozoneAuthorizationProviderImpl = null; |
| |
| public RangerOzoneAuthorizer() { |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("==> RangerOzoneAuthorizer.RangerOzoneAuthorizer()"); |
| } |
| |
| this.init(); |
| |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("<== RangerOzoneAuthorizer.RangerOzoneAuthorizer()"); |
| } |
| } |
| |
| private void init(){ |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("==> RangerOzoneAuthorizer.init()"); |
| } |
| |
| try { |
| |
| rangerPluginClassLoader = RangerPluginClassLoader.getInstance(RANGER_PLUGIN_TYPE, this.getClass()); |
| |
| @SuppressWarnings("unchecked") |
| Class<IAccessAuthorizer> cls = (Class<IAccessAuthorizer>) Class.forName(RANGER_OZONE_AUTHORIZER_IMPL_CLASSNAME, true, rangerPluginClassLoader); |
| |
| activatePluginClassLoader(); |
| |
| ozoneAuthorizationProviderImpl = cls.newInstance(); |
| } catch (Exception e) { |
| // check what need to be done |
| LOG.error("Error Enabling RangerOzonePlugin", e); |
| } finally { |
| deactivatePluginClassLoader(); |
| } |
| |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("<== RangerOzoneAuthorizer.init()"); |
| } |
| } |
| |
| @Override |
| public boolean checkAccess(IOzoneObj ozoneObject, RequestContext context) throws OzoneAclException { |
| |
| boolean ret = false; |
| |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("==> RangerOzoneAuthorizer.checkAccess()"); |
| } |
| |
| try { |
| activatePluginClassLoader(); |
| |
| ret = ozoneAuthorizationProviderImpl.checkAccess(ozoneObject, context); |
| } finally { |
| deactivatePluginClassLoader(); |
| } |
| |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("<== RangerOzoneAuthorizer.checkAccess()"); |
| } |
| |
| return ret; |
| } |
| |
| private void activatePluginClassLoader() { |
| if(rangerPluginClassLoader != null) { |
| rangerPluginClassLoader.activate(); |
| } |
| } |
| |
| private void deactivatePluginClassLoader() { |
| if(rangerPluginClassLoader != null) { |
| rangerPluginClassLoader.deactivate(); |
| } |
| } |
| } |