001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.hadoop.security;
020
021import java.net.URI;
022
023import org.apache.hadoop.fs.Path;
024
025public class ProviderUtils {
026  /**
027   * Convert a nested URI to decode the underlying path. The translation takes
028   * the authority and parses it into the underlying scheme and authority.
029   * For example, "myscheme://hdfs@nn/my/path" is converted to
030   * "hdfs://nn/my/path".
031   * @param nestedUri the URI from the nested URI
032   * @return the unnested path
033   */
034  public static Path unnestUri(URI nestedUri) {
035    String[] parts = nestedUri.getAuthority().split("@", 2);
036    StringBuilder result = new StringBuilder(parts[0]);
037    result.append("://");
038    if (parts.length == 2) {
039      result.append(parts[1]);
040    }
041    result.append(nestedUri.getPath());
042    if (nestedUri.getQuery() != null) {
043      result.append("?");
044      result.append(nestedUri.getQuery());
045    }
046    if (nestedUri.getFragment() != null) {
047      result.append("#");
048      result.append(nestedUri.getFragment());
049    }
050    return new Path(result.toString());
051  }
052}