Java tutorial
/** * 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; import static org.apache.hadoop.fs.CommonConfigurationKeys.HADOOP_SECURITY_AUTHENTICATION; import java.io.IOException; import java.lang.reflect.Field; import java.net.URISyntaxException; import java.net.URI; import java.net.URL; import java.net.HttpURLConnection; import java.security.PrivilegedExceptionAction; import java.util.Random; import org.junit.Test; import org.junit.BeforeClass; import org.junit.AfterClass; import static org.junit.Assert.*; import org.apache.commons.logging.impl.Log4JLogger; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.FileSystem; import org.apache.hadoop.fs.Path; import org.apache.hadoop.hdfs.DFSConfigKeys; import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier; import org.apache.hadoop.io.Text; import org.apache.hadoop.security.UserGroupInformation; import org.apache.hadoop.security.token.Token; import org.apache.hadoop.security.token.TokenIdentifier; public class TestHftpDelegationToken { @Test public void testHdfsDelegationToken() throws Exception { final Configuration conf = new Configuration(); conf.set(HADOOP_SECURITY_AUTHENTICATION, "kerberos"); UserGroupInformation.setConfiguration(conf); UserGroupInformation user = UserGroupInformation.createUserForTesting("oom", new String[] { "memory" }); Token<?> token = new Token<TokenIdentifier>(new byte[0], new byte[0], DelegationTokenIdentifier.HDFS_DELEGATION_KIND, new Text("127.0.0.1:8020")); user.addToken(token); Token<?> token2 = new Token<TokenIdentifier>(null, null, new Text("other token"), new Text("127.0.0.1:8020")); user.addToken(token2); assertEquals("wrong tokens in user", 2, user.getTokens().size()); FileSystem fs = user.doAs(new PrivilegedExceptionAction<FileSystem>() { public FileSystem run() throws Exception { return FileSystem.get(new URI("hftp://localhost:50470/"), conf); } }); assertSame("wrong kind of file system", HftpFileSystem.class, fs.getClass()); Field renewToken = HftpFileSystem.class.getDeclaredField("renewToken"); renewToken.setAccessible(true); assertSame("wrong token", token, renewToken.get(fs)); } }