/** 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.mapreduce.security;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.security.NoSuchAlgorithmException;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import javax.crypto.KeyGenerator;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.examples.SleepJob;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
import org.apache.hadoop.hdfs.server.namenode.NameNode;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.JobConfigurable;
import org.apache.hadoop.mapred.JobTracker;
import org.apache.hadoop.mapred.MiniMRCluster;
import org.apache.hadoop.mapred.OutputCollector;
import org.apache.hadoop.mapred.Reporter;
import org.apache.hadoop.mapreduce.JobContext;
import org.apache.hadoop.security.Credentials;
import org.apache.hadoop.security.SecurityUtil;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.security.token.TokenIdentifier;
import org.apache.hadoop.util.ToolRunner;
import org.codehaus.jackson.map.ObjectMapper;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;
public class TestTokenCache {
private static final int NUM_OF_KEYS = 10;
// my sleep class - adds check for tokenCache
static class MySleepJob extends SleepJob implements JobConfigurable {
Credentials ts;
public void configure(JobConf job) {
//Credentials in the job will not have delegation tokens
//because security is disabled. Fetch delegation tokens
//and populate the credential in the job.
try {
ts = job.getCredentials();
Path p1 = new Path("file1");
p1 = p1.getFileSystem(job).makeQualified(p1);
Credentials cred = new Credentials();
TokenCache.obtainTokensForNamenodesInternal(cred, new Path [] {p1}, job);
for (Token<? extends TokenIdentifier> t: cred.getAllTokens()) {
ts.addToken(new Text("Hdfs"), t);
}
} catch (IOException e) {
Assert.fail("Exception "+e);
}
}
/**
* attempts to access tokenCache as from client
*/
@Override
public void map(IntWritable key, IntWritable value,
OutputCollector<IntWritable, NullWritable> output, Reporter reporter)
throws IOException {
// get token storage and a key
byte[] key1 = ts.getSecretKey(new Text("alias1"));
Collection<Token<? extends TokenIdentifier>> dts = ts.getAllTokens();
int dts_size = 0;
if(dts != null)
dts_size = dts.size();
if(dts.size() != 2) { // one job token and one delegation token
throw new RuntimeException("tokens are not available"); // fail the test
}
if(key1 == null || ts == null || ts.numberOfSecretKeys() != NUM_OF_KEYS) {
throw new RuntimeException("secret keys are not available"); // fail the test
}
super.map(key, value, output, reporter);
}
public JobConf setupJobConf(int numMapper, int numReducer,
long mapSleepTime, int mapSleepCount,
long reduceSleepTime, int reduceSleepCount) {
JobConf job = super.setupJobConf(numMapper,numReducer,
mapSleepTime, mapSleepCount, reduceSleepTime, reduceSleepCount);
job.setMapperClass(MySleepJob.class);
return job;
}
}
private static MiniMRCluster mrCluster;
private static MiniDFSCluster dfsCluster;
private static final Path TEST_DIR =
new Path(System.getProperty("test.build.data","/tmp"), "sleepTest");
private static final Path tokenFileName = new Path(TEST_DIR, "tokenFile.json");
private static int numSlaves = 1;
private static JobConf jConf;
private static ObjectMapper mapper = new ObjectMapper();
private static Path p1;
private static Path p2;
@BeforeClass
public static void setUp() throws Exception {
Configuration conf = new Configuration();
dfsCluster = new MiniDFSCluster(conf, numSlaves, true, null);
jConf = new JobConf(conf);
mrCluster = new MiniMRCluster(0, 0, numSlaves,
dfsCluster.getFileSystem().getUri().toString(), 1, null, null, null,
jConf);
createTokenFileJson();
verifySecretKeysInJSONFile();
dfsCluster.getNameNode().getNamesystem()
.getDelegationTokenSecretManager().startThreads();
FileSystem fs = dfsCluster.getFileSystem();
p1 = new Path("file1");
p2 = new Path("file2");
p1 = fs.makeQualified(p1);
}
@AfterClass
public static void tearDown() throws Exception {
if(mrCluster != null)
mrCluster.shutdown();
mrCluster = null;
if(dfsCluster != null)
dfsCluster.shutdown();
dfsCluster = null;
}
// create jason file and put some keys into it..
private static void createTokenFileJson() throws IOException {
Map<String, String> map = new HashMap<String, String>();
try {
KeyGenerator kg = KeyGenerator.getInstance("HmacSHA1");
for(int i=0; i<NUM_OF_KEYS; i++) {
SecretKeySpec key = (SecretKeySpec) kg.generateKey();
byte [] enc_key = key.getEncoded();
map.put("alias"+i, new String(Base64.encodeBase64(enc_key)));
}
} catch (NoSuchAlgorithmException e) {
throw new IOException(e);
}
try {
File p = new File(tokenFileName.getParent().toString());
p.mkdirs();
// convert to JSON and save to the file
mapper.writeValue(new File(tokenFileName.toString()), map);
} catch (Exception e) {
System.out.println("failed with :" + e.getLocalizedMessage());
}
}
@SuppressWarnings("unchecked")
private static void verifySecretKeysInJSONFile() throws IOException {
Map<String, String> map;
map = mapper.readValue(new File(tokenFileName.toString()), Map.class);
assertEquals("didn't read JSON correctly", map.size(), NUM_OF_KEYS);
}
/**
* run a distributed job and verify that TokenCache is available
* @throws IOException
*/
@Test
public void testTokenCache() throws IOException {
// make sure JT starts
jConf = mrCluster.createJobConf();
// provide namenodes names for the job to get the delegation tokens for
//String nnUri = dfsCluster.getNameNode().getUri(namenode).toString();
NameNode nn = dfsCluster.getNameNode();
URI nnUri = NameNode.getUri(nn.getNameNodeAddress());
jConf.set(JobContext.JOB_NAMENODES, nnUri + "," + nnUri.toString());
// job tracker principle id..
jConf.set(JobTracker.JT_USER_NAME, "jt_id");
// using argument to pass the file name
String[] args = {
"-tokenCacheFile", tokenFileName.toString(),
"-m", "1", "-r", "1", "-mt", "1", "-rt", "1"
};
int res = -1;
try {
res = ToolRunner.run(jConf, new MySleepJob(), args);
} catch (Exception e) {
System.out.println("Job failed with" + e.getLocalizedMessage());
e.printStackTrace(System.out);
fail("Job failed");
}
assertEquals("dist job res is not 0", res, 0);
}
/**
* run a local job and verify that TokenCache is available
* @throws NoSuchAlgorithmException
* @throws IOException
*/
@Test
public void testLocalJobTokenCache() throws NoSuchAlgorithmException, IOException {
// this is local job
String[] args = {"-m", "1", "-r", "1", "-mt", "1", "-rt", "1"};
jConf.set("mapreduce.job.credentials.json", tokenFileName.toString());
int res = -1;
try {
res = ToolRunner.run(jConf, new MySleepJob(), args);
} catch (Exception e) {
System.out.println("Job failed with" + e.getLocalizedMessage());
e.printStackTrace(System.out);
fail("local Job failed");
}
assertEquals("local job res is not 0", res, 0);
}
@Test
public void testGetTokensForNamenodes() throws IOException {
FileSystem fs = dfsCluster.getFileSystem();
Credentials credentials = new Credentials();
TokenCache.obtainTokensForNamenodesInternal(credentials, new Path [] {p1, p2},
jConf);
// this token is keyed by hostname:port key.
String fs_addr =
SecurityUtil.buildDTServiceName(p1.toUri(), NameNode.DEFAULT_PORT);
Token<DelegationTokenIdentifier> nnt =
TokenCache.getDelegationToken(credentials, fs_addr);
assertNotNull("Token for nn is null", nnt);
// verify the size
Collection<Token<? extends TokenIdentifier>> tns =
credentials.getAllTokens();
assertEquals("number of tokens is not 1", 1, tns.size());
boolean found = false;
for(Token<? extends TokenIdentifier> t: tns) {
if(t.getKind().equals(DelegationTokenIdentifier.HDFS_DELEGATION_KIND) &&
t.getService().equals(new Text(fs_addr))) {
found = true;
}
assertTrue("didn't find token for " + p1 ,found);
}
}
}