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HDFS-16686. GetJournalEditServlet fails to authorize valid Kerberos request (#4724)

This commit is contained in:
Steve Vaughan 2022-08-23 11:03:57 -04:00 committed by GitHub
parent 183f09b1da
commit 6fbc38db95
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4 changed files with 275 additions and 165 deletions
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26
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/qjournal/server/GetJournalEditServlet.java
View File

@ -27,11 +27,11 @@ import java.util.Set;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.text.StringEscapeUtils;
import org.apache.hadoop.hdfs.server.namenode.DfsServlet;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.hadoop.classification.InterfaceAudience;
@ -64,7 +64,7 @@ import org.apache.hadoop.util.StringUtils;
* </ul>
*/
@InterfaceAudience.Private
public class GetJournalEditServlet extends HttpServlet {
public class GetJournalEditServlet extends DfsServlet {
private static final long serialVersionUID = -4635891628211723009L;
private static final Logger LOG =
@ -77,17 +77,11 @@ public class GetJournalEditServlet extends HttpServlet {
protected boolean isValidRequestor(HttpServletRequest request, Configuration conf)
throws IOException {
String remotePrincipal = request.getUserPrincipal().getName();
String remoteShortName = request.getRemoteUser();
if (remotePrincipal == null) { // This really shouldn't happen...
LOG.warn("Received null remoteUser while authorizing access to " +
"GetJournalEditServlet");
return false;
}
UserGroupInformation ugi = getUGI(request, conf);
if (LOG.isDebugEnabled()) {
LOG.debug("Validating request made by " + remotePrincipal +
" / " + remoteShortName + ". This user is: " +
LOG.debug("Validating request made by " + ugi.getUserName() +
" / " + ugi.getShortUserName() + ". This user is: " +
UserGroupInformation.getLoginUser());
}
@ -115,9 +109,9 @@ public class GetJournalEditServlet extends HttpServlet {
for (String v : validRequestors) {
if (LOG.isDebugEnabled())
LOG.debug("isValidRequestor is comparing to valid requestor: " + v);
if (v != null && v.equals(remotePrincipal)) {
if (v != null && v.equals(ugi.getUserName())) {
if (LOG.isDebugEnabled())
LOG.debug("isValidRequestor is allowing: " + remotePrincipal);
LOG.debug("isValidRequestor is allowing: " + ugi.getUserName());
return true;
}
}
@ -125,16 +119,16 @@ public class GetJournalEditServlet extends HttpServlet {
// Additionally, we compare the short name of the requestor to this JN's
// username, because we want to allow requests from other JNs during
// recovery, but we can't enumerate the full list of JNs.
if (remoteShortName.equals(
if (ugi.getShortUserName().equals(
UserGroupInformation.getLoginUser().getShortUserName())) {
if (LOG.isDebugEnabled())
LOG.debug("isValidRequestor is allowing other JN principal: " +
remotePrincipal);
ugi.getUserName());
return true;
}
if (LOG.isDebugEnabled())
LOG.debug("isValidRequestor is rejecting: " + remotePrincipal);
LOG.debug("isValidRequestor is rejecting: " + ugi.getUserName());
return false;
}

295
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestRollingUpgrade.java
View File

@ -33,6 +33,8 @@ import javax.management.ObjectName;
import javax.management.ReflectionException;
import javax.management.openmbean.CompositeDataSupport;
import org.junit.Rule;
import org.junit.rules.TemporaryFolder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.hadoop.conf.Configuration;
@ -80,16 +82,38 @@ public class TestRollingUpgrade {
}
}
@Rule
public TemporaryFolder folder = new TemporaryFolder();
/**
* Create a default HDFS configuration which has test-specific data directories. This is
* intended to protect against interactions between test runs that might corrupt results. Each
* test run's data is automatically cleaned-up by JUnit.
*
* @return a default configuration with test-specific data directories
*/
public Configuration getHdfsConfiguration() throws IOException {
Configuration conf = new HdfsConfiguration();
// Override the file system locations with test-specific temporary folders
conf.set(DFSConfigKeys.DFS_NAMENODE_NAME_DIR_KEY,
folder.newFolder("dfs/name").toString());
conf.set(DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_DIR_KEY,
folder.newFolder("dfs/namesecondary").toString());
conf.set(DFSConfigKeys.DFS_DATANODE_DATA_DIR_KEY,
folder.newFolder("dfs/data").toString());
return conf;
}
/**
* Test DFSAdmin Upgrade Command.
*/
@Test
public void testDFSAdminRollingUpgradeCommands() throws Exception {
// start a cluster
final Configuration conf = new HdfsConfiguration();
MiniDFSCluster cluster = null;
try {
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build();
final Configuration conf = getHdfsConfiguration();
try (MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build()) {
cluster.waitActive();
final Path foo = new Path("/foo");
@ -149,8 +173,6 @@ public class TestRollingUpgrade {
Assert.assertTrue(dfs.exists(bar));
Assert.assertTrue(dfs.exists(baz));
}
} finally {
if(cluster != null) cluster.shutdown();
}
}
@ -172,115 +194,116 @@ public class TestRollingUpgrade {
LOG.info("nn1Dir=" + nn1Dir);
LOG.info("nn2Dir=" + nn2Dir);
final Configuration conf = new HdfsConfiguration();
final MiniJournalCluster mjc = new MiniJournalCluster.Builder(conf).build();
mjc.waitActive();
setConf(conf, nn1Dir, mjc);
final Configuration conf = getHdfsConfiguration();
try (MiniJournalCluster mjc = new MiniJournalCluster.Builder(conf).build()) {
mjc.waitActive();
setConf(conf, nn1Dir, mjc);
{
// Start the cluster once to generate the dfs dirs
final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
.numDataNodes(0)
.manageNameDfsDirs(false)
.checkExitOnShutdown(false)
.build();
// Shutdown the cluster before making a copy of the namenode dir to release
// all file locks, otherwise, the copy will fail on some platforms.
cluster.shutdown();
}
MiniDFSCluster cluster2 = null;
try {
// Start a second NN pointed to the same quorum.
// We need to copy the image dir from the first NN -- or else
// the new NN will just be rejected because of Namespace mismatch.
FileUtil.fullyDelete(nn2Dir);
FileUtil.copy(nn1Dir, FileSystem.getLocal(conf).getRaw(),
new Path(nn2Dir.getAbsolutePath()), false, conf);
// Start the cluster again
final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
.numDataNodes(0)
.format(false)
.manageNameDfsDirs(false)
.checkExitOnShutdown(false)
.build();
final Path foo = new Path("/foo");
final Path bar = new Path("/bar");
final Path baz = new Path("/baz");
final RollingUpgradeInfo info1;
{
final DistributedFileSystem dfs = cluster.getFileSystem();
dfs.mkdirs(foo);
//start rolling upgrade
dfs.setSafeMode(SafeModeAction.SAFEMODE_ENTER);
info1 = dfs.rollingUpgrade(RollingUpgradeAction.PREPARE);
dfs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE);
LOG.info("START\n" + info1);
//query rolling upgrade
assertEquals(info1, dfs.rollingUpgrade(RollingUpgradeAction.QUERY));
dfs.mkdirs(bar);
// Start the cluster once to generate the dfs dirs
final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
.numDataNodes(0)
.manageNameDfsDirs(false)
.checkExitOnShutdown(false)
.build();
// Shutdown the cluster before making a copy of the namenode dir to release
// all file locks, otherwise, the copy will fail on some platforms.
cluster.shutdown();
}
// cluster2 takes over QJM
final Configuration conf2 = setConf(new Configuration(), nn2Dir, mjc);
cluster2 = new MiniDFSCluster.Builder(conf2)
.numDataNodes(0)
.format(false)
.manageNameDfsDirs(false)
.build();
final DistributedFileSystem dfs2 = cluster2.getFileSystem();
// Check that cluster2 sees the edits made on cluster1
Assert.assertTrue(dfs2.exists(foo));
Assert.assertTrue(dfs2.exists(bar));
Assert.assertFalse(dfs2.exists(baz));
//query rolling upgrade in cluster2
assertEquals(info1, dfs2.rollingUpgrade(RollingUpgradeAction.QUERY));
dfs2.mkdirs(baz);
LOG.info("RESTART cluster 2");
cluster2.restartNameNode();
assertEquals(info1, dfs2.rollingUpgrade(RollingUpgradeAction.QUERY));
Assert.assertTrue(dfs2.exists(foo));
Assert.assertTrue(dfs2.exists(bar));
Assert.assertTrue(dfs2.exists(baz));
//restart cluster with -upgrade should fail.
MiniDFSCluster cluster2 = null;
try {
cluster2.restartNameNode("-upgrade");
} catch(IOException e) {
LOG.info("The exception is expected.", e);
// Start a second NN pointed to the same quorum.
// We need to copy the image dir from the first NN -- or else
// the new NN will just be rejected because of Namespace mismatch.
FileUtil.fullyDelete(nn2Dir);
FileUtil.copy(nn1Dir, FileSystem.getLocal(conf).getRaw(),
new Path(nn2Dir.getAbsolutePath()), false, conf);
// Start the cluster again
final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
.numDataNodes(0)
.format(false)
.manageNameDfsDirs(false)
.checkExitOnShutdown(false)
.build();
final Path foo = new Path("/foo");
final Path bar = new Path("/bar");
final Path baz = new Path("/baz");
final RollingUpgradeInfo info1;
{
final DistributedFileSystem dfs = cluster.getFileSystem();
dfs.mkdirs(foo);
//start rolling upgrade
dfs.setSafeMode(SafeModeAction.SAFEMODE_ENTER);
info1 = dfs.rollingUpgrade(RollingUpgradeAction.PREPARE);
dfs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE);
LOG.info("START\n" + info1);
//query rolling upgrade
assertEquals(info1, dfs.rollingUpgrade(RollingUpgradeAction.QUERY));
dfs.mkdirs(bar);
cluster.shutdown();
}
// cluster2 takes over QJM
final Configuration conf2 = setConf(new Configuration(), nn2Dir, mjc);
cluster2 = new MiniDFSCluster.Builder(conf2)
.numDataNodes(0)
.format(false)
.manageNameDfsDirs(false)
.build();
final DistributedFileSystem dfs2 = cluster2.getFileSystem();
// Check that cluster2 sees the edits made on cluster1
Assert.assertTrue(dfs2.exists(foo));
Assert.assertTrue(dfs2.exists(bar));
Assert.assertFalse(dfs2.exists(baz));
//query rolling upgrade in cluster2
assertEquals(info1, dfs2.rollingUpgrade(RollingUpgradeAction.QUERY));
dfs2.mkdirs(baz);
LOG.info("RESTART cluster 2");
cluster2.restartNameNode();
assertEquals(info1, dfs2.rollingUpgrade(RollingUpgradeAction.QUERY));
Assert.assertTrue(dfs2.exists(foo));
Assert.assertTrue(dfs2.exists(bar));
Assert.assertTrue(dfs2.exists(baz));
//restart cluster with -upgrade should fail.
try {
cluster2.restartNameNode("-upgrade");
} catch (IOException e) {
LOG.info("The exception is expected.", e);
}
LOG.info("RESTART cluster 2 again");
cluster2.restartNameNode();
assertEquals(info1, dfs2.rollingUpgrade(RollingUpgradeAction.QUERY));
Assert.assertTrue(dfs2.exists(foo));
Assert.assertTrue(dfs2.exists(bar));
Assert.assertTrue(dfs2.exists(baz));
//finalize rolling upgrade
final RollingUpgradeInfo finalize = dfs2.rollingUpgrade(
RollingUpgradeAction.FINALIZE);
Assert.assertTrue(finalize.isFinalized());
LOG.info("RESTART cluster 2 with regular startup option");
cluster2.getNameNodeInfos()[0].setStartOpt(StartupOption.REGULAR);
cluster2.restartNameNode();
Assert.assertTrue(dfs2.exists(foo));
Assert.assertTrue(dfs2.exists(bar));
Assert.assertTrue(dfs2.exists(baz));
} finally {
if (cluster2 != null) cluster2.shutdown();
}
LOG.info("RESTART cluster 2 again");
cluster2.restartNameNode();
assertEquals(info1, dfs2.rollingUpgrade(RollingUpgradeAction.QUERY));
Assert.assertTrue(dfs2.exists(foo));
Assert.assertTrue(dfs2.exists(bar));
Assert.assertTrue(dfs2.exists(baz));
//finalize rolling upgrade
final RollingUpgradeInfo finalize = dfs2.rollingUpgrade(
RollingUpgradeAction.FINALIZE);
Assert.assertTrue(finalize.isFinalized());
LOG.info("RESTART cluster 2 with regular startup option");
cluster2.getNameNodeInfos()[0].setStartOpt(StartupOption.REGULAR);
cluster2.restartNameNode();
Assert.assertTrue(dfs2.exists(foo));
Assert.assertTrue(dfs2.exists(bar));
Assert.assertTrue(dfs2.exists(baz));
} finally {
if (cluster2 != null) cluster2.shutdown();
}
}
@ -309,10 +332,8 @@ public class TestRollingUpgrade {
@Test
public void testRollback() throws Exception {
// start a cluster
final Configuration conf = new HdfsConfiguration();
MiniDFSCluster cluster = null;
try {
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build();
final Configuration conf = getHdfsConfiguration();
try (MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build()) {
cluster.waitActive();
final Path foo = new Path("/foo");
@ -352,8 +373,6 @@ public class TestRollingUpgrade {
startRollingUpgrade(foo, bar, file, data, cluster);
rollbackRollingUpgrade(foo, bar, file, data, cluster);
} finally {
if(cluster != null) cluster.shutdown();
}
}
@ -407,10 +426,8 @@ public class TestRollingUpgrade {
@Test
public void testDFSAdminDatanodeUpgradeControlCommands() throws Exception {
// start a cluster
final Configuration conf = new HdfsConfiguration();
MiniDFSCluster cluster = null;
try {
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build();
final Configuration conf = getHdfsConfiguration();
try (MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build()) {
cluster.waitActive();
final DFSAdmin dfsadmin = new DFSAdmin(conf);
DataNode dn = cluster.getDataNodes().get(0);
@ -431,8 +448,6 @@ public class TestRollingUpgrade {
// ping should fail.
assertEquals(-1, dfsadmin.run(args1));
} finally {
if (cluster != null) cluster.shutdown();
}
}
@ -462,7 +477,7 @@ public class TestRollingUpgrade {
private void testFinalize(int nnCount, boolean skipImageDeltaCheck)
throws Exception {
final Configuration conf = new HdfsConfiguration();
final Configuration conf = getHdfsConfiguration();
MiniQJMHACluster cluster = null;
final Path foo = new Path("/foo");
final Path bar = new Path("/bar");
@ -528,10 +543,8 @@ public class TestRollingUpgrade {
}
private void testQuery(int nnCount) throws Exception{
final Configuration conf = new Configuration();
MiniQJMHACluster cluster = null;
try {
cluster = new MiniQJMHACluster.Builder(conf).setNumNameNodes(nnCount).build();
final Configuration conf = getHdfsConfiguration();
try (MiniQJMHACluster cluster = new MiniQJMHACluster.Builder(conf).setNumNameNodes(nnCount).build()) {
MiniDFSCluster dfsCluster = cluster.getDfsCluster();
dfsCluster.waitActive();
@ -561,19 +574,13 @@ public class TestRollingUpgrade {
// The NN should have a copy of the fsimage in case of rollbacks.
Assert.assertTrue(dfsCluster.getNamesystem(0).getFSImage()
.hasRollbackFSImage());
} finally {
if (cluster != null) {
cluster.shutdown();
}
}
}
@Test (timeout = 300000)
public void testQueryAfterRestart() throws IOException, InterruptedException {
final Configuration conf = new Configuration();
MiniDFSCluster cluster = null;
try {
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build();
final Configuration conf = getHdfsConfiguration();
try (MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build()) {
cluster.waitActive();
DistributedFileSystem dfs = cluster.getFileSystem();
@ -587,10 +594,6 @@ public class TestRollingUpgrade {
cluster.restartNameNodes();
dfs.rollingUpgrade(RollingUpgradeAction.QUERY);
} finally {
if (cluster != null) {
cluster.shutdown();
}
}
}
@ -606,7 +609,7 @@ public class TestRollingUpgrade {
@Test(timeout = 60000)
public void testRollBackImage() throws Exception {
final Configuration conf = new Configuration();
final Configuration conf = getHdfsConfiguration();
conf.setInt(DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_TXNS_KEY, 10);
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
conf.setInt(DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_CHECK_PERIOD_KEY, 2);
@ -651,15 +654,14 @@ public class TestRollingUpgrade {
}
public void testCheckpoint(int nnCount) throws IOException, InterruptedException {
final Configuration conf = new Configuration();
final Configuration conf = getHdfsConfiguration();
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
conf.setInt(DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_PERIOD_KEY, 1);
MiniQJMHACluster cluster = null;
final Path foo = new Path("/foo");
try {
cluster = new MiniQJMHACluster.Builder(conf).setNumNameNodes(nnCount).build();
try (MiniQJMHACluster cluster = new MiniQJMHACluster.Builder(conf).setNumNameNodes(nnCount)
.build()) {
MiniDFSCluster dfsCluster = cluster.getDfsCluster();
dfsCluster.waitActive();
@ -681,17 +683,14 @@ public class TestRollingUpgrade {
verifyNNCheckpoint(dfsCluster, txid, i);
}
} finally {
if (cluster != null) {
cluster.shutdown();
}
}
}
/**
* Verify that the namenode at the given index has an FSImage with a TxId up to txid-1
*/
private void verifyNNCheckpoint(MiniDFSCluster dfsCluster, long txid, int nnIndex) throws InterruptedException {
private void verifyNNCheckpoint(MiniDFSCluster dfsCluster, long txid, int nnIndex)
throws InterruptedException {
int retries = 0;
while (++retries < 5) {
NNStorage storage = dfsCluster.getNamesystem(nnIndex).getFSImage()
@ -732,7 +731,7 @@ public class TestRollingUpgrade {
SecondaryNameNode snn = null;
try {
Configuration conf = new HdfsConfiguration();
Configuration conf = getHdfsConfiguration();
cluster = new MiniDFSCluster.Builder(conf).build();
cluster.waitActive();

13
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/qjournal/MiniQJMHACluster.java
View File

@ -35,7 +35,7 @@ import java.util.ArrayList;
import java.util.List;
import java.util.Random;
public class MiniQJMHACluster {
public class MiniQJMHACluster implements AutoCloseable {
private MiniDFSCluster cluster;
private MiniJournalCluster journalCluster;
private final Configuration conf;
@ -189,4 +189,15 @@ public class MiniQJMHACluster {
cluster.shutdown();
journalCluster.shutdown();
}
@Override
public void close() {
try {
shutdown();
} catch (IOException shutdownFailure) {
LOG.warn("Exception while closing journal cluster", shutdownFailure);
}
}
}

106
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/qjournal/server/TestGetJournalEditServlet.java Normal file
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@ -0,0 +1,106 @@
/**
* 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.hdfs.qjournal.server;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.web.resources.UserParam;
import org.apache.hadoop.security.UserGroupInformation;
import org.junit.BeforeClass;
import org.junit.Test;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
public class TestGetJournalEditServlet {
private final static Configuration CONF = new HdfsConfiguration();
private final static GetJournalEditServlet SERVLET = new GetJournalEditServlet();
@BeforeClass
public static void setUp() throws ServletException {
// Configure Hadoop
CONF.set(DFSConfigKeys.FS_DEFAULT_NAME_KEY, "hdfs://localhost:4321/");
CONF.set(DFSConfigKeys.HADOOP_SECURITY_AUTH_TO_LOCAL,
"RULE:[2:$1/$2@$0]([nsdj]n/.*@REALM\\.TLD)s/.*/hdfs/\nDEFAULT");
CONF.set(DFSConfigKeys.DFS_NAMESERVICES, "ns");
CONF.set(DFSConfigKeys.DFS_NAMENODE_KERBEROS_PRINCIPAL_KEY, "nn/_HOST@REALM.TLD");
// Configure Kerberos UGI
UserGroupInformation.setConfiguration(CONF);
UserGroupInformation.setLoginUser(UserGroupInformation.createRemoteUser(
"jn/somehost@REALM.TLD"));
// Initialize the servlet
ServletConfig config = mock(ServletConfig.class);
SERVLET.init(config);
}
/**
* Unauthenticated user should be rejected.
*
* @throws IOException for unexpected validation failures
*/
@Test
public void testWithoutUser() throws IOException {
// Test: Make a request without specifying a user
HttpServletRequest request = mock(HttpServletRequest.class);
boolean isValid = SERVLET.isValidRequestor(request, CONF);
// Verify: The request is invalid
assertThat(isValid).isFalse();
}
/**
* Namenode requests should be authorized, since it will match the configured namenode.
*
* @throws IOException for unexpected validation failures
*/
@Test
public void testRequestNameNode() throws IOException, ServletException {
// Test: Make a request from a namenode
HttpServletRequest request = mock(HttpServletRequest.class);
when(request.getParameter(UserParam.NAME)).thenReturn("nn/localhost@REALM.TLD");
boolean isValid = SERVLET.isValidRequestor(request, CONF);
assertThat(isValid).isTrue();
}
/**
* There is a fallback using the short name, which is used by journalnodes.
*
* @throws IOException for unexpected validation failures
*/
@Test
public void testRequestShortName() throws IOException {
// Test: Make a request from a namenode
HttpServletRequest request = mock(HttpServletRequest.class);
when(request.getParameter(UserParam.NAME)).thenReturn("jn/localhost@REALM.TLD");
boolean isValid = SERVLET.isValidRequestor(request, CONF);
assertThat(isValid).isTrue();
}
}