| /* |
| * 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.samza.system.hdfs.partitioner; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| 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.samza.SamzaException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| public class HdfsFileSystemAdapter implements FileSystemAdapter { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(HdfsFileSystemAdapter.class); |
| |
| public List<FileMetadata> getAllFiles(String streamName) { |
| List<FileMetadata> ret = new ArrayList<>(); |
| try { |
| Path streamPath = new Path(streamName); |
| FileSystem fileSystem = streamPath.getFileSystem(new Configuration()); |
| FileStatus[] fileStatuses = fileSystem.listStatus(streamPath); |
| for (FileStatus fileStatus : fileStatuses) { |
| if (!fileStatus.isDirectory()) { |
| ret.add(new FileMetadata(fileStatus.getPath().toString(), fileStatus.getLen())); |
| } else { |
| ret.addAll(getAllFiles(fileStatus.getPath().toString())); |
| } |
| } |
| } catch (IOException e) { |
| LOG.error("Failed to get the list of files for " + streamName, e); |
| throw new SamzaException(e); |
| } |
| return ret; |
| } |
| } |