| /* |
| * 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.sqoop.authorizer; |
| |
| import java.util.List; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.ranger.plugin.classloader.RangerPluginClassLoader; |
| import org.apache.sqoop.common.SqoopException; |
| import org.apache.sqoop.model.MPrincipal; |
| import org.apache.sqoop.model.MPrivilege; |
| import org.apache.sqoop.security.AuthorizationValidator; |
| |
| public class RangerSqoopAuthorizer extends AuthorizationValidator { |
| private static final Log LOG = LogFactory.getLog(RangerSqoopAuthorizer.class); |
| |
| private static final String RANGER_PLUGIN_TYPE = "sqoop"; |
| private static final String RANGER_SQOOP_AUTHORIZER_IMPL_CLASSNAME = "org.apache.ranger.authorization.sqoop.authorizer.RangerSqoopAuthorizer"; |
| |
| private AuthorizationValidator authorizationValidator = null; |
| private static RangerPluginClassLoader rangerPluginClassLoader = null; |
| |
| public RangerSqoopAuthorizer() { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("==> RangerSqoopAuthorizer.RangerSqoopAuthorizer()"); |
| } |
| |
| this.init(); |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("<== RangerSqoopAuthorizer.RangerSqoopAuthorizer()"); |
| } |
| } |
| |
| public void init() { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("==> RangerSqoopAuthorizer.init()"); |
| } |
| |
| try { |
| |
| rangerPluginClassLoader = RangerPluginClassLoader.getInstance(RANGER_PLUGIN_TYPE, this.getClass()); |
| |
| @SuppressWarnings("unchecked") |
| Class<AuthorizationValidator> cls = (Class<AuthorizationValidator>) Class.forName( |
| RANGER_SQOOP_AUTHORIZER_IMPL_CLASSNAME, true, rangerPluginClassLoader); |
| |
| activatePluginClassLoader(); |
| |
| authorizationValidator = cls.newInstance(); |
| } catch (Exception e) { |
| LOG.error("Error Enabling RangerSqoopAuthorizer", e); |
| } finally { |
| deactivatePluginClassLoader(); |
| } |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("<== RangerSqoopAuthorizer.init()"); |
| } |
| } |
| |
| @Override |
| public void checkPrivileges(MPrincipal principal, List<MPrivilege> privileges) throws SqoopException { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("==> RangerSqoopAuthorizer.checkPrivileges()"); |
| } |
| |
| try { |
| activatePluginClassLoader(); |
| |
| authorizationValidator.checkPrivileges(principal, privileges); |
| } finally { |
| deactivatePluginClassLoader(); |
| } |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("<== RangerSqoopAuthorizer.checkPrivileges()"); |
| } |
| } |
| |
| private void activatePluginClassLoader() { |
| if (rangerPluginClassLoader != null) { |
| rangerPluginClassLoader.activate(); |
| } |
| } |
| |
| private void deactivatePluginClassLoader() { |
| if (rangerPluginClassLoader != null) { |
| rangerPluginClassLoader.deactivate(); |
| } |
| } |
| } |