org.apache.hadoop.fs.FsUrlConnection Maven / Gradle / Ivy
/**
* 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.fs;
import java.io.IOException;
import java.io.InputStream;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLConnection;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
/**
* Representation of a URL connection to open InputStreams.
*/
@InterfaceAudience.Private
@InterfaceStability.Unstable
class FsUrlConnection extends URLConnection {
private Configuration conf;
private InputStream is;
FsUrlConnection(Configuration conf, URL url) {
super(url);
this.conf = conf;
}
@Override
public void connect() throws IOException {
try {
FileSystem fs = FileSystem.get(url.toURI(), conf);
is = fs.open(new Path(url.getPath()));
} catch (URISyntaxException e) {
throw new IOException(e.toString());
}
}
@Override
public InputStream getInputStream() throws IOException {
if (is == null) {
connect();
}
return is;
}
}