| /** |
| * 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.hadoop.security; |
| |
| import java.io.IOException; |
| |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.junit.Test; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.CommonConfigurationKeys; |
| import org.apache.hadoop.security.Groups; |
| import org.apache.hadoop.security.ShellBasedUnixGroupsMapping; |
| |
| |
| public class TestGroupsCaching { |
| public static final Log LOG = LogFactory.getLog(TestGroupsCaching.class); |
| private static Configuration conf = new Configuration(); |
| private static String[] myGroups = {"grp1", "grp2"}; |
| |
| static { |
| conf.setClass(CommonConfigurationKeys.HADOOP_SECURITY_GROUP_MAPPING, |
| FakeGroupMapping.class, |
| ShellBasedUnixGroupsMapping.class); |
| } |
| |
| public static class FakeGroupMapping extends ShellBasedUnixGroupsMapping { |
| // any to n mapping |
| private static Set<String> allGroups = new HashSet<String>(); |
| private static Set<String> blackList = new HashSet<String>(); |
| |
| @Override |
| public List<String> getGroups(String user) throws IOException { |
| LOG.info("Getting groups for " + user); |
| if (blackList.contains(user)) { |
| return new LinkedList<String>(); |
| } |
| return new LinkedList<String>(allGroups); |
| } |
| |
| @Override |
| public void cacheGroupsRefresh() throws IOException { |
| LOG.info("Cache is being refreshed."); |
| clearBlackList(); |
| return; |
| } |
| |
| public static void clearBlackList() throws IOException { |
| LOG.info("Clearing the blacklist"); |
| blackList.clear(); |
| } |
| |
| @Override |
| public void cacheGroupsAdd(List<String> groups) throws IOException { |
| LOG.info("Adding " + groups + " to groups."); |
| allGroups.addAll(groups); |
| } |
| |
| public static void addToBlackList(String user) throws IOException { |
| LOG.info("Adding " + user + " to the blacklist"); |
| blackList.add(user); |
| } |
| } |
| |
| @Test |
| public void TestGroupsCaching() throws Exception { |
| Groups groups = new Groups(conf); |
| groups.cacheGroupsAdd(Arrays.asList(myGroups)); |
| groups.refresh(); |
| FakeGroupMapping.clearBlackList(); |
| FakeGroupMapping.addToBlackList("user1"); |
| |
| // regular entry |
| assertTrue(groups.getGroups("me").size() == 2); |
| |
| // this must be cached. blacklisting should have no effect. |
| FakeGroupMapping.addToBlackList("me"); |
| assertTrue(groups.getGroups("me").size() == 2); |
| |
| // ask for a negative entry |
| try { |
| LOG.error("We are not supposed to get here." + groups.getGroups("user1").toString()); |
| fail(); |
| } catch (IOException ioe) { |
| if(!ioe.getMessage().startsWith("No groups found")) { |
| LOG.error("Got unexpected exception: " + ioe.getMessage()); |
| fail(); |
| } |
| } |
| |
| // this shouldn't be cached. remove from the black list and retry. |
| FakeGroupMapping.clearBlackList(); |
| assertTrue(groups.getGroups("user1").size() == 2); |
| } |
| } |