/**
* 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 static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import java.io.IOException;
import java.net.URI;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
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.fs.FileSystem;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.MiniMRCluster;
import org.apache.hadoop.mapred.tools.MRAdmin;
import org.apache.hadoop.mapreduce.server.jobtracker.JTConfig;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class TestMapredGroupMappingServiceRefresh {
private MiniDFSCluster cluster;
JobConf config;
private static long groupRefreshTimeoutSec = 2;
private static final Log LOG = LogFactory
.getLog(TestMapredGroupMappingServiceRefresh.class);
public static class MockUnixGroupsMapping implements GroupMappingServiceProvider {
private int i=0;
@Override
public List<String> getGroups(String user) throws IOException {
String g1 = user + (10 * i + 1);
String g2 = user + (10 * i + 2);
List<String> l = new ArrayList<String>(2);
l.add(g1);
l.add(g2);
i++;
return l;
}
}
@Before
public void setUp() throws Exception {
config = new JobConf(new Configuration());
config.setClass(CommonConfigurationKeys.HADOOP_SECURITY_GROUP_MAPPING,
TestMapredGroupMappingServiceRefresh.MockUnixGroupsMapping.class,
GroupMappingServiceProvider.class);
config.setLong(CommonConfigurationKeys.HADOOP_SECURITY_GROUPS_CACHE_SECS,
groupRefreshTimeoutSec);
LOG.info("GROUP MAPPING class name=" +
config.getClass(CommonConfigurationKeys.HADOOP_SECURITY_GROUP_MAPPING,
ShellBasedUnixGroupsMapping.class,GroupMappingServiceProvider.class).
getName());
Groups.getUserToGroupsMappingService(config);
String namenodeUrl = "hdfs://localhost:" + "0";
FileSystem.setDefaultUri(config, namenodeUrl);
cluster = new MiniDFSCluster(0, config, 1, true, true, true, null, null,
null, null);
cluster.waitActive();
URI uri = cluster.getURI();
MiniMRCluster miniMRCluster = new MiniMRCluster(0, uri.toString() ,
3, null, null, config);
config.set(JTConfig.JT_IPC_ADDRESS, "localhost:"+miniMRCluster.getJobTrackerPort());
}
@After
public void tearDown() throws Exception {
if(cluster!=null) {
cluster.shutdown();
}
}
@Test
public void testGroupMappingRefresh() throws Exception {
MRAdmin admin = new MRAdmin(config);
String [] args = new String[] { "-refreshUserToGroupsMappings" };
Groups groups = Groups.getUserToGroupsMappingService(config);
String user = UserGroupInformation.getLoginUser().getShortUserName();
System.out.println("first attempt:");
List<String> g1 = groups.getGroups(user);
String [] str_groups = new String [g1.size()];
g1.toArray(str_groups);
System.out.println(Arrays.toString(str_groups));
System.out.println("second attempt, should be same:");
List<String> g2 = groups.getGroups(user);
g2.toArray(str_groups);
System.out.println(Arrays.toString(str_groups));
for(int i=0; i<g2.size(); i++) {
assertEquals("Should be same group ", g1.get(i), g2.get(i));
}
// run refresh command
admin.run(args);
System.out.println("third attempt(after refresh command), should be different:");
List<String> g3 = groups.getGroups(user);
g3.toArray(str_groups);
System.out.println(Arrays.toString(str_groups));
for(int i=0; i<g3.size(); i++) {
assertFalse("Should be different group ", g1.get(i).equals(g3.get(i)));
}
System.out.println("");
// test time out
Thread.sleep(groupRefreshTimeoutSec*1100);
System.out.println("fourth attempt(after timeout), should be different:");
List<String> g4 = groups.getGroups(user);
g4.toArray(str_groups);
System.out.println(Arrays.toString(str_groups));
for(int i=0; i<g4.size(); i++) {
assertFalse("Should be different group ", g3.get(i).equals(g4.get(i)));
}
}
}