| /** |
| * 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.shell; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FsShellPermissions; |
| import org.apache.hadoop.fs.Path; |
| |
| /** |
| * Base class for all "hadoop fs" commands |
| */ |
| |
| @InterfaceAudience.Private |
| @InterfaceStability.Evolving |
| |
| // this class may not look useful now, but it's a placeholder for future |
| // functionality to act as a registry for fs commands. currently it's being |
| // used to implement unnecessary abstract methods in the base class |
| |
| abstract public class FsCommand extends Command { |
| /** |
| * Register the command classes used by the fs subcommand |
| * @param factory where to register the class |
| */ |
| public static void registerCommands(CommandFactory factory) { |
| factory.registerCommands(CopyCommands.class); |
| factory.registerCommands(Count.class); |
| factory.registerCommands(Delete.class); |
| factory.registerCommands(Display.class); |
| factory.registerCommands(FsShellPermissions.class); |
| factory.registerCommands(FsUsage.class); |
| factory.registerCommands(Ls.class); |
| factory.registerCommands(Mkdir.class); |
| factory.registerCommands(MoveCommands.class); |
| factory.registerCommands(SetReplication.class); |
| factory.registerCommands(Stat.class); |
| factory.registerCommands(Tail.class); |
| factory.registerCommands(Test.class); |
| factory.registerCommands(Touch.class); |
| } |
| |
| protected FsCommand() {} |
| |
| protected FsCommand(Configuration conf) { |
| super(conf); |
| } |
| |
| public String getCommandName() { |
| return name.startsWith("-") ? name.substring(1) : name; |
| } |
| |
| // abstract method that normally is invoked by runall() which is |
| // overridden below |
| protected void run(Path path) throws IOException { |
| throw new RuntimeException("not supposed to get here"); |
| } |
| |
| /** @deprecated use {@link #run(String...argv)} */ |
| @Deprecated |
| @Override |
| public int runAll() { |
| return run(args); |
| } |
| } |