| /** |
| * 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.tools; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.fail; |
| import static org.mockito.Matchers.eq; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.when; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.DataInputStream; |
| import java.io.DataOutputStream; |
| import java.net.URI; |
| |
| import org.apache.hadoop.hdfs.DistributedFileSystem; |
| import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier; |
| import org.apache.hadoop.hdfs.tools.DelegationTokenFetcher; |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.security.TokenStorage; |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.apache.hadoop.security.token.Token; |
| import org.apache.hadoop.security.token.TokenIdentifier; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class TestDelegationTokenFetcher { |
| private DistributedFileSystem dfs; |
| private DataOutputStream out; |
| private UserGroupInformation ugi; |
| |
| @Before |
| public void init() { |
| dfs = mock(DistributedFileSystem.class); |
| out = mock(DataOutputStream.class); |
| ugi = mock(UserGroupInformation.class); |
| } |
| |
| /** |
| * Verify that when the DelegationTokenFetcher runs, it talks to the Namenode, |
| * pulls out the correct user's token and successfully serializes it to disk. |
| */ |
| @Test |
| public void expectedTokenIsRetrievedFromDFS() throws Exception { |
| final String LONG_NAME = "TheDoctor@TARDIS"; |
| final String SHORT_NAME = "TheDoctor"; |
| final String SERVICE_VALUE = "localhost:2005"; |
| |
| // Mock out the user's long and short names. |
| when(ugi.getUserName()).thenReturn(LONG_NAME); |
| when(ugi.getShortUserName()).thenReturn(SHORT_NAME); |
| |
| // Create a token for the fetcher to fetch, wire NN to return it when asked |
| // for this particular user. |
| Token<DelegationTokenIdentifier> t = new Token<DelegationTokenIdentifier>(); |
| when(dfs.getDelegationToken(eq(new Text(LONG_NAME)))).thenReturn(t); |
| |
| // Mock the NN's URI, which is stored as the service value |
| URI uri = new URI("hdfs://" + SERVICE_VALUE); |
| when(dfs.getUri()).thenReturn(uri); |
| |
| // Now, actually let the TokenFetcher go fetch the token. |
| final ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| out = new DataOutputStream(baos); |
| new DelegationTokenFetcher(dfs, out, ugi).go(); |
| |
| // now read the data back in and verify correct values |
| TokenStorage ts = new TokenStorage(); |
| DataInputStream dis = |
| new DataInputStream(new ByteArrayInputStream(baos.toByteArray())); |
| ts.readFields(dis); |
| Token<? extends TokenIdentifier> newToken = ts.getToken(new Text(SHORT_NAME)); |
| |
| assertEquals("Should only be one token in storage", ts.numberOfTokens(), 1); |
| assertEquals("Service value should have survived", |
| "127.0.0.1:2005", newToken.getService().toString()); |
| } |
| |
| private void checkWithNullParam(String s) { |
| try { |
| new DelegationTokenFetcher(dfs, out, ugi); |
| } catch (IllegalArgumentException iae) { |
| assertEquals("Expected exception message not received", |
| s + " cannot be null.", iae.getMessage()); |
| return; // received expected exception. We're good. |
| } |
| fail("null parameter should have failed."); |
| } |
| |
| @Test |
| public void dfsCannotBeNull() { |
| dfs = null; |
| String s = "dfs"; |
| checkWithNullParam(s); |
| } |
| |
| @Test |
| public void dosCannotBeNull() { |
| out = null; |
| String s = "out"; |
| checkWithNullParam(s); |
| } |
| |
| @Test |
| public void ugiCannotBeNull() { |
| ugi = null; |
| String s = "ugi"; |
| checkWithNullParam(s); |
| } |
| } |