| /** |
| * 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.azure; |
| |
| import java.io.IOException; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.conf.Configured; |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.util.Tool; |
| import org.apache.hadoop.util.ToolRunner; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| |
| /** |
| * An fsck tool implementation for WASB that does various admin/cleanup/recovery |
| * tasks on the WASB file system. |
| */ |
| @InterfaceAudience.Public |
| @InterfaceStability.Evolving |
| public class WasbFsck extends Configured implements Tool { |
| private FileSystem mockFileSystemForTesting = null; |
| private static final String LOST_AND_FOUND_PATH = "/lost+found"; |
| private boolean pathNameWarning = false; |
| |
| public WasbFsck(Configuration conf) { |
| super(conf); |
| } |
| |
| /** |
| * For testing purposes, set the file system to use here instead of relying on |
| * getting it from the FileSystem class based on the URI. |
| * |
| * @param fileSystem |
| * The file system to use. |
| */ |
| @VisibleForTesting |
| public void setMockFileSystemForTesting(FileSystem fileSystem) { |
| this.mockFileSystemForTesting = fileSystem; |
| } |
| |
| @Override |
| public int run(String[] args) throws Exception { |
| if (doPrintUsage(Arrays.asList(args))) { |
| printUsage(); |
| return -1; |
| } |
| Path pathToCheck = null; |
| boolean doRecover = false; |
| boolean doDelete = false; |
| for (String arg : args) { |
| if (!arg.startsWith("-")) { |
| if (pathToCheck != null) { |
| System.err |
| .println("Can't specify multiple paths to check on the command-line"); |
| return 1; |
| } |
| pathToCheck = new Path(arg); |
| } else if (arg.equals("-move")) { |
| doRecover = true; |
| } else if (arg.equals("-delete")) { |
| doDelete = true; |
| } |
| } |
| if (doRecover && doDelete) { |
| System.err |
| .println("Conflicting options: can't specify both -move and -delete."); |
| return 1; |
| } |
| if (pathToCheck == null) { |
| pathToCheck = new Path("/"); // Check everything. |
| } |
| FileSystem fs; |
| if (mockFileSystemForTesting == null) { |
| fs = FileSystem.get(pathToCheck.toUri(), getConf()); |
| } else { |
| fs = mockFileSystemForTesting; |
| } |
| |
| if (!recursiveCheckChildPathName(fs, fs.makeQualified(pathToCheck))) { |
| pathNameWarning = true; |
| } |
| |
| if (!(fs instanceof NativeAzureFileSystem)) { |
| System.err |
| .println("Can only check WASB file system. Instead I'm asked to" |
| + " check: " + fs.getUri()); |
| return 2; |
| } |
| NativeAzureFileSystem wasbFs = (NativeAzureFileSystem) fs; |
| if (doRecover) { |
| System.out.println("Recovering files with dangling data under: " |
| + pathToCheck); |
| wasbFs.recoverFilesWithDanglingTempData(pathToCheck, new Path( |
| LOST_AND_FOUND_PATH)); |
| } else if (doDelete) { |
| System.out.println("Deleting temp files with dangling data under: " |
| + pathToCheck); |
| wasbFs.deleteFilesWithDanglingTempData(pathToCheck); |
| } else { |
| System.out.println("Please specify -move or -delete"); |
| } |
| return 0; |
| } |
| |
| public boolean getPathNameWarning() { |
| return pathNameWarning; |
| } |
| |
| /** |
| * Recursively check if a given path and its child paths have colons in their |
| * names. It returns true if none of them has a colon or this path does not |
| * exist, and false otherwise. |
| */ |
| private boolean recursiveCheckChildPathName(FileSystem fs, Path p) |
| throws IOException { |
| if (p == null) { |
| return true; |
| } |
| if (!fs.exists(p)) { |
| System.out.println("Path " + p + " does not exist!"); |
| return true; |
| } |
| |
| if (fs.isFile(p)) { |
| if (containsColon(p)) { |
| System.out.println("Warning: file " + p + " has a colon in its name."); |
| return false; |
| } else { |
| return true; |
| } |
| } else { |
| boolean flag; |
| if (containsColon(p)) { |
| System.out.println("Warning: directory " + p |
| + " has a colon in its name."); |
| flag = false; |
| } else { |
| flag = true; |
| } |
| FileStatus[] listed = fs.listStatus(p); |
| for (FileStatus l : listed) { |
| if (!recursiveCheckChildPathName(fs, l.getPath())) { |
| flag = false; |
| } |
| } |
| return flag; |
| } |
| } |
| |
| private boolean containsColon(Path p) { |
| return p.toUri().getPath().toString().contains(":"); |
| } |
| |
| private static void printUsage() { |
| System.out.println("Usage: WasbFSck [<path>] [-move | -delete]"); |
| System.out.println("\t<path>\tstart checking from this path"); |
| System.out.println("\t-move\tmove any files whose upload was interrupted" |
| + " mid-stream to " + LOST_AND_FOUND_PATH); |
| System.out |
| .println("\t-delete\tdelete any files whose upload was interrupted" |
| + " mid-stream"); |
| ToolRunner.printGenericCommandUsage(System.out); |
| } |
| |
| private boolean doPrintUsage(List<String> args) { |
| return args.contains("-H"); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| int res = ToolRunner.run(new WasbFsck(new Configuration()), args); |
| System.exit(res); |
| } |
| } |