| /** |
| * 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.nfs.nfs3; |
| |
| import static org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod.KERBEROS; |
| import static org.hamcrest.core.Is.is; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertThat; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.hdfs.DFSClient; |
| import org.apache.hadoop.hdfs.nfs.conf.NfsConfiguration; |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.junit.Test; |
| |
| public class TestDFSClientCache { |
| @Test |
| public void testEviction() throws IOException { |
| NfsConfiguration conf = new NfsConfiguration(); |
| conf.set(FileSystem.FS_DEFAULT_NAME_KEY, "hdfs://localhost"); |
| |
| // Only one entry will be in the cache |
| final int MAX_CACHE_SIZE = 1; |
| |
| DFSClientCache cache = new DFSClientCache(conf, MAX_CACHE_SIZE); |
| |
| DFSClient c1 = cache.getDfsClient("test1"); |
| assertTrue(cache.getDfsClient("test1").toString().contains("ugi=test1")); |
| assertEquals(c1, cache.getDfsClient("test1")); |
| assertFalse(isDfsClientClose(c1)); |
| |
| cache.getDfsClient("test2"); |
| assertTrue(isDfsClientClose(c1)); |
| assertTrue("cache size should be the max size or less", |
| cache.clientCache.size() <= MAX_CACHE_SIZE); |
| } |
| |
| @Test |
| public void testGetUserGroupInformationSecure() throws IOException { |
| String userName = "user1"; |
| String currentUser = "test-user"; |
| |
| |
| NfsConfiguration conf = new NfsConfiguration(); |
| UserGroupInformation currentUserUgi |
| = UserGroupInformation.createRemoteUser(currentUser); |
| currentUserUgi.setAuthenticationMethod(KERBEROS); |
| UserGroupInformation.setLoginUser(currentUserUgi); |
| |
| DFSClientCache cache = new DFSClientCache(conf); |
| UserGroupInformation ugiResult |
| = cache.getUserGroupInformation(userName, currentUserUgi); |
| |
| assertThat(ugiResult.getUserName(), is(userName)); |
| assertThat(ugiResult.getRealUser(), is(currentUserUgi)); |
| assertThat( |
| ugiResult.getAuthenticationMethod(), |
| is(UserGroupInformation.AuthenticationMethod.PROXY)); |
| } |
| |
| @Test |
| public void testGetUserGroupInformation() throws IOException { |
| String userName = "user1"; |
| String currentUser = "currentUser"; |
| |
| UserGroupInformation currentUserUgi = UserGroupInformation |
| .createUserForTesting(currentUser, new String[0]); |
| NfsConfiguration conf = new NfsConfiguration(); |
| conf.set(FileSystem.FS_DEFAULT_NAME_KEY, "hdfs://localhost"); |
| DFSClientCache cache = new DFSClientCache(conf); |
| UserGroupInformation ugiResult |
| = cache.getUserGroupInformation(userName, currentUserUgi); |
| |
| assertThat(ugiResult.getUserName(), is(userName)); |
| assertThat(ugiResult.getRealUser(), is(currentUserUgi)); |
| assertThat( |
| ugiResult.getAuthenticationMethod(), |
| is(UserGroupInformation.AuthenticationMethod.PROXY)); |
| } |
| |
| private static boolean isDfsClientClose(DFSClient c) { |
| try { |
| c.exists(""); |
| } catch (IOException e) { |
| return e.getMessage().equals("Filesystem closed"); |
| } |
| return false; |
| } |
| } |