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/**
 * 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;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FileSystemMultipartUploader;
import org.apache.hadoop.fs.MultipartUploader;
import org.apache.hadoop.fs.MultipartUploaderFactory;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.protocol.HdfsConstants;

/**
 * Support for HDFS multipart uploads, built on
 * {@link FileSystem#concat(Path, Path[])}.
 */
public class DFSMultipartUploaderFactory extends MultipartUploaderFactory {
  protected MultipartUploader createMultipartUploader(FileSystem fs,
      Configuration conf) {
    if (fs.getScheme().equals(HdfsConstants.HDFS_URI_SCHEME)) {
      return new FileSystemMultipartUploader(fs);
    }
    return null;
  }
}