| /** |
| * 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.server.datanode; |
| |
| import org.apache.hadoop.hdfs.server.common.Storage; |
| import org.junit.Test; |
| import org.mockito.Mockito; |
| |
| import java.io.File; |
| import java.util.Random; |
| import java.util.UUID; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import static org.hamcrest.core.Is.is; |
| import static org.junit.Assert.assertThat; |
| |
| /** |
| * Test that BlockPoolSliceStorage can correctly generate trash and |
| * restore directories for a given block file path. |
| */ |
| public class TestBlockPoolSliceStorage { |
| |
| public static final Logger LOG = LoggerFactory |
| .getLogger(TestBlockPoolSliceStorage.class); |
| |
| final Random rand = new Random(); |
| BlockPoolSliceStorage storage; |
| |
| /** |
| * BlockPoolSliceStorage with a dummy storage directory. The directory |
| * need not exist. We need to extend BlockPoolSliceStorage so we can |
| * call {@link Storage#addStorageDir}. |
| */ |
| private static class StubBlockPoolSliceStorage extends BlockPoolSliceStorage { |
| StubBlockPoolSliceStorage(int namespaceID, String bpID, long cTime, |
| String clusterId) { |
| super(namespaceID, bpID, cTime, clusterId); |
| addStorageDir(new StorageDirectory(new File("/tmp/dontcare/" + bpID))); |
| assertThat(getStorageDirs().size(), is(1)); |
| } |
| } |
| |
| private String makeRandomIpAddress() { |
| return rand.nextInt(256) + "." + |
| rand.nextInt(256) + "." + |
| rand.nextInt(256) + "." + |
| rand.nextInt(256); |
| } |
| |
| private String makeRandomBlockpoolId() { |
| return "BP-" + rand.nextInt(Integer.MAX_VALUE) + |
| "-" + makeRandomIpAddress() + |
| "-" + rand.nextInt(Integer.MAX_VALUE); |
| } |
| |
| private BlockPoolSliceStorage makeBlockPoolStorage() { |
| return new StubBlockPoolSliceStorage( |
| rand.nextInt(Integer.MAX_VALUE), |
| makeRandomBlockpoolId(), |
| rand.nextInt(Integer.MAX_VALUE), |
| UUID.randomUUID().toString()); |
| } |
| |
| private String makeRandomBlockFileSubdir(int nestingLevel) { |
| StringBuilder sb = new StringBuilder(); |
| |
| sb.append(File.separator); |
| |
| for (int i = 0; i < nestingLevel; ++i) { |
| sb.append("subdir" + rand.nextInt(64) + File.separator); |
| } |
| return sb.toString(); |
| } |
| |
| /** |
| * Test conversion from a block file path to its target trash |
| * directory. |
| */ |
| public void getTrashDirectoryForBlockFile(String fileName, int nestingLevel) { |
| final String blockFileSubdir = makeRandomBlockFileSubdir(nestingLevel); |
| final String blockFileName = fileName; |
| |
| String testFilePath = |
| storage.getSingularStorageDir().getRoot() + File.separator + |
| Storage.STORAGE_DIR_CURRENT + |
| blockFileSubdir + blockFileName; |
| |
| String expectedTrashPath = |
| storage.getSingularStorageDir().getRoot() + File.separator + |
| BlockPoolSliceStorage.TRASH_ROOT_DIR + |
| blockFileSubdir.substring(0, blockFileSubdir.length() - 1); |
| |
| LOG.info("Got subdir {}", blockFileSubdir); |
| LOG.info("Generated file path {}", testFilePath); |
| |
| ReplicaInfo info = Mockito.mock(ReplicaInfo.class); |
| Mockito.when(info.getBlockURI()).thenReturn(new File(testFilePath).toURI()); |
| assertThat(storage.getTrashDirectory(info), is(expectedTrashPath)); |
| } |
| |
| /* |
| * Test conversion from a block file in a trash directory to its |
| * target directory for restore. |
| */ |
| public void getRestoreDirectoryForBlockFile(String fileName, int nestingLevel) { |
| BlockPoolSliceStorage storage = makeBlockPoolStorage(); |
| final String blockFileSubdir = makeRandomBlockFileSubdir(nestingLevel); |
| final String blockFileName = fileName; |
| |
| String deletedFilePath = |
| storage.getSingularStorageDir().getRoot() + File.separator + |
| BlockPoolSliceStorage.TRASH_ROOT_DIR + |
| blockFileSubdir + blockFileName; |
| |
| String expectedRestorePath = |
| storage.getSingularStorageDir().getRoot() + File.separator + |
| Storage.STORAGE_DIR_CURRENT + |
| blockFileSubdir.substring(0, blockFileSubdir.length() - 1); |
| |
| LOG.info("Generated deleted file path {}", deletedFilePath); |
| assertThat(storage.getRestoreDirectory(new File(deletedFilePath)), |
| is(expectedRestorePath)); |
| |
| } |
| |
| @Test (timeout=300000) |
| public void testGetTrashAndRestoreDirectories() { |
| storage = makeBlockPoolStorage(); |
| |
| // Test a few different nesting levels since block files |
| // could be nested such as subdir1/subdir5/blk_... |
| // Make sure all nesting levels are handled correctly. |
| for (int i = 0; i < 3; ++i) { |
| getTrashDirectoryForBlockFile("blk_myblockfile", i); |
| getTrashDirectoryForBlockFile("blk_myblockfile.meta", i); |
| getRestoreDirectoryForBlockFile("blk_myblockfile", i); |
| getRestoreDirectoryForBlockFile("blk_myblockfile.meta", i); |
| } |
| } |
| } |