| /** |
| * 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.tools; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.security.Credentials; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.ArrayList; |
| |
| /** |
| * GlobbedCopyListing implements the CopyListing interface, to create the copy |
| * listing-file by "globbing" all specified source paths (wild-cards and all.) |
| */ |
| public class GlobbedCopyListing extends CopyListing { |
| private static final Log LOG = LogFactory.getLog(GlobbedCopyListing.class); |
| |
| private final CopyListing simpleListing; |
| /** |
| * Constructor, to initialize the configuration. |
| * @param configuration The input Configuration object. |
| * @param credentials Credentials object on which the FS delegation tokens are cached. If null |
| * delegation token caching is skipped |
| */ |
| public GlobbedCopyListing(Configuration configuration, Credentials credentials) { |
| super(configuration, credentials); |
| simpleListing = new SimpleCopyListing(getConf(), credentials) ; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| protected void validatePaths(DistCpOptions options) |
| throws IOException, InvalidInputException { |
| } |
| |
| /** |
| * Implementation of CopyListing::buildListing(). |
| * Creates the copy listing by "globbing" all source-paths. |
| * @param pathToListingFile The location at which the copy-listing file |
| * is to be created. |
| * @param options Input Options for DistCp (indicating source/target paths.) |
| * @throws IOException |
| */ |
| @Override |
| public void doBuildListing(Path pathToListingFile, |
| DistCpOptions options) throws IOException { |
| |
| List<Path> globbedPaths = new ArrayList<Path>(); |
| if (options.getSourcePaths().isEmpty()) { |
| throw new InvalidInputException("Nothing to process. Source paths::EMPTY"); |
| } |
| |
| for (Path p : options.getSourcePaths()) { |
| FileSystem fs = p.getFileSystem(getConf()); |
| FileStatus[] inputs = fs.globStatus(p); |
| |
| if(inputs != null && inputs.length > 0) { |
| for (FileStatus onePath: inputs) { |
| globbedPaths.add(onePath.getPath()); |
| } |
| } else { |
| throw new InvalidInputException(p + " doesn't exist"); |
| } |
| } |
| |
| DistCpOptions optionsGlobbed = new DistCpOptions(options); |
| optionsGlobbed.setSourcePaths(globbedPaths); |
| simpleListing.buildListing(pathToListingFile, optionsGlobbed); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| protected long getBytesToCopy() { |
| return simpleListing.getBytesToCopy(); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| protected long getNumberOfPaths() { |
| return simpleListing.getNumberOfPaths(); |
| } |
| |
| } |