/**
 * 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.dfs;

import java.io.IOException;

import java.net.HttpURLConnection;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;

import org.apache.hadoop.fs.Path;

/** An implementation of a protocol for accessing filesystems over HTTPS.
 * The following implementation provides a limited, read-only interface
 * to a filesystem over HTTPS.
 * @see org.apache.hadoop.dfs.ListPathsServlet
 * @see org.apache.hadoop.dfs.FileDataServlet
 */
public class HsftpFileSystem extends HftpFileSystem {

  @Override
  protected HttpURLConnection openConnection(String path, String query)
      throws IOException {
    try {
      final URL url = new URI("https", null, nnAddr.getHostName(),
          nnAddr.getPort(), path, query, null).toURL();
      return (HttpURLConnection)url.openConnection();
    } catch (URISyntaxException e) {
      throw (IOException)new IOException().initCause(e);
    }
  }

  @Override
  public URI getUri() {
    try {
      return new URI("hsftp", null, nnAddr.getHostName(), nnAddr.getPort(),
                     null, null, null);
    } catch (URISyntaxException e) {
      return null;
    }
  }

}