| /** |
| * 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.fs; |
| |
| import org.apache.commons.lang.RandomStringUtils; |
| import org.apache.hadoop.hdfs.DFSConfigKeys; |
| import org.apache.hadoop.hdfs.HdfsConfiguration; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.apache.hadoop.test.GenericTestUtils; |
| import org.junit.AfterClass; |
| import org.junit.Before; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| import javax.security.auth.login.LoginException; |
| import java.io.IOException; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.util.EnumSet; |
| |
| import static org.apache.hadoop.fs.CreateFlag.CREATE; |
| import static org.apache.hadoop.fs.FileContextTestHelper.getDefaultBlockSize; |
| import static org.apache.hadoop.fs.FileContextTestHelper.getFileData; |
| import static org.junit.Assert.assertArrayEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| * Test of FileContext apis on Webhdfs. |
| */ |
| public class TestWebHdfsFileContextMainOperations |
| extends FileContextMainOperationsBaseTest { |
| |
| protected static MiniDFSCluster cluster; |
| private static Path defaultWorkingDirectory; |
| protected static URI webhdfsUrl; |
| |
| protected static int numBlocks = 2; |
| |
| protected static final byte[] data = getFileData(numBlocks, |
| getDefaultBlockSize()); |
| protected static final HdfsConfiguration CONF = new HdfsConfiguration(); |
| |
| @Override |
| public Path getDefaultWorkingDirectory() { |
| return defaultWorkingDirectory; |
| } |
| |
| @Override |
| protected FileContextTestHelper createFileContextHelper() { |
| return new FileContextTestHelper(); |
| } |
| |
| public URI getWebhdfsUrl() { |
| return webhdfsUrl; |
| } |
| |
| @BeforeClass |
| public static void clusterSetupAtBeginning() |
| throws IOException, LoginException, URISyntaxException { |
| |
| cluster = new MiniDFSCluster.Builder(CONF).numDataNodes(2).build(); |
| cluster.waitClusterUp(); |
| webhdfsUrl = new URI(WebHdfs.SCHEME + "://" + cluster.getConfiguration(0) |
| .get(DFSConfigKeys.DFS_NAMENODE_HTTP_ADDRESS_KEY)); |
| fc = FileContext.getFileContext(webhdfsUrl, CONF); |
| defaultWorkingDirectory = fc.makeQualified(new Path( |
| "/user/" + UserGroupInformation.getCurrentUser().getShortUserName())); |
| fc.mkdir(defaultWorkingDirectory, FileContext.DEFAULT_PERM, true); |
| } |
| |
| @Before |
| public void setUp() throws Exception { |
| URI webhdfsUrlReal = getWebhdfsUrl(); |
| Path testBuildData = new Path( |
| webhdfsUrlReal + "/" + GenericTestUtils.DEFAULT_TEST_DATA_PATH |
| + RandomStringUtils.randomAlphanumeric(10)); |
| Path rootPath = new Path(testBuildData, "root-uri"); |
| |
| localFsRootPath = rootPath.makeQualified(webhdfsUrlReal, null); |
| fc.mkdir(getTestRootPath(fc, "test"), FileContext.DEFAULT_PERM, true); |
| } |
| |
| private Path getTestRootPath(FileContext fc, String path) { |
| return fileContextTestHelper.getTestRootPath(fc, path); |
| } |
| |
| @Override |
| protected boolean listCorruptedBlocksSupported() { |
| return false; |
| } |
| |
| /** |
| * Test FileContext APIs when symlinks are not supported |
| * TODO: Open separate JIRA for full support of the Symlink in webhdfs |
| */ |
| @Test |
| public void testUnsupportedSymlink() throws IOException { |
| /** |
| * WebHdfs client Partially supports the Symlink. |
| * creation of Symlink is supported, but the getLinkTargetPath() api is not supported currently, |
| * Implement the test case once the full support is available. |
| */ |
| } |
| |
| /** |
| * TODO: Open JIRA for the idiosyncrasies between hdfs and webhdfs |
| */ |
| public void testSetVerifyChecksum() throws IOException { |
| final Path rootPath = getTestRootPath(fc, "test"); |
| final Path path = new Path(rootPath, "zoo"); |
| |
| FSDataOutputStream out = fc |
| .create(path, EnumSet.of(CREATE), Options.CreateOpts.createParent()); |
| try { |
| out.write(data, 0, data.length); |
| } finally { |
| out.close(); |
| } |
| |
| //In webhdfs scheme fc.setVerifyChecksum() can be called only after |
| // writing first few bytes but in case of the hdfs scheme we can call |
| // immediately after the creation call. |
| // instruct FS to verify checksum through the FileContext: |
| fc.setVerifyChecksum(true, path); |
| |
| FileStatus fileStatus = fc.getFileStatus(path); |
| final long len = fileStatus.getLen(); |
| assertTrue(len == data.length); |
| byte[] bb = new byte[(int) len]; |
| FSDataInputStream fsdis = fc.open(path); |
| try { |
| fsdis.readFully(bb); |
| } finally { |
| fsdis.close(); |
| } |
| assertArrayEquals(data, bb); |
| } |
| |
| @AfterClass |
| public static void ClusterShutdownAtEnd() throws Exception { |
| if (cluster != null) { |
| cluster.shutdown(); |
| cluster = null; |
| } |
| } |
| } |