/*
 * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
 * (the "License"). You may not use this work except in compliance with the License, which is
 * available at www.apache.org/licenses/LICENSE-2.0
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied, as more fully set forth in the License.
 *
 * See the NOTICE file distributed with this work for information regarding copyright ownership.
 */

package alluxio.underfs.wasb;

import alluxio.AlluxioURI;
import alluxio.PropertyKey;
import alluxio.underfs.UnderFileSystem;
import alluxio.underfs.UnderFileSystemConfiguration;
import alluxio.underfs.hdfs.HdfsUnderFileSystem;
import alluxio.underfs.options.FileLocationOptions;

import org.apache.hadoop.conf.Configuration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.util.List;

import javax.annotation.concurrent.ThreadSafe;

/**
 * An {@link UnderFileSystem} uses the Microsoft Azure Blob Storage.
 */
@ThreadSafe
public class WasbUnderFileSystem extends HdfsUnderFileSystem {
  private static final Logger LOG = LoggerFactory.getLogger(WasbUnderFileSystem.class);

  /** Constant for the wasb URI scheme. */
  public static final String SCHEME = "wasb://";

  /**
   * Prepares the configuration for this Wasb as an HDFS configuration.
   *
   * @param conf the configuration for this UFS
   * @return the created configuration
   */
  public static Configuration createConfiguration(UnderFileSystemConfiguration conf) {
    Configuration wasbConf = HdfsUnderFileSystem.createConfiguration(conf);
    wasbConf.set("fs.AbstractFileSystem.wasb.impl", "org.apache.hadoop.fs.azure.Wasb");
    return wasbConf;
  }

  /**
   * Factory method to construct a new Wasb {@link UnderFileSystem}.
   *
   * @param uri the {@link AlluxioURI} for this UFS
   * @param conf the configuration for this UFS
   * @return a new Wasb {@link UnderFileSystem} instance
   */
  public static WasbUnderFileSystem createInstance(AlluxioURI uri,
      UnderFileSystemConfiguration conf) {
    Configuration wasbConf = createConfiguration(conf);
    return new WasbUnderFileSystem(uri, conf, wasbConf);
  }

  /**
   * Constructs a new Wasb {@link UnderFileSystem}.
   *
   * @param ufsUri the {@link AlluxioURI} for this UFS
   * @param conf the configuration for this UFS
   * @param wasbConf the configuration for this Wasb UFS
   */
  private WasbUnderFileSystem(AlluxioURI ufsUri, UnderFileSystemConfiguration conf,
      final Configuration wasbConf) {
    super(ufsUri, conf, wasbConf);
  }

  @Override
  public String getUnderFSType() {
    return "wasb";
  }

  @Override
  public long getBlockSizeByte(String path) throws IOException {
    // wasb is an object store, so use the default block size, like other object stores.
    return alluxio.Configuration.getBytes(PropertyKey.USER_BLOCK_SIZE_BYTES_DEFAULT);
  }

  // Not supported
  @Override
  public List<String> getFileLocations(String path) throws IOException {
    LOG.debug("getFileLocations is not supported when using WasbUnderFileSystem.");
    return null;
  }

  // Not supported
  @Override
  public List<String> getFileLocations(String path, FileLocationOptions options)
      throws IOException {
    LOG.debug("getFileLocations is not supported when using WasbUnderFileSystem.");
    return null;
  }
}

@@ -2481,22 +2481,21 @@
   */%0A  p
-rivate
+ublic
  WasbUnd

Fix style check