ProxyFileDataServlet.java
上传用户:quxuerui
上传日期:2018-01-08
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文件大小:2k
- /**
- * 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.hdfsproxy;
- import java.io.IOException;
- import java.net.URI;
- import java.net.URISyntaxException;
- import javax.servlet.http.HttpServletRequest;
- import org.apache.hadoop.fs.FileStatus;
- import org.apache.hadoop.hdfs.protocol.ClientProtocol;
- import org.apache.hadoop.hdfs.server.namenode.FileDataServlet;
- import org.apache.hadoop.security.UnixUserGroupInformation;
- /** {@inheritDoc} */
- public class ProxyFileDataServlet extends FileDataServlet {
- /** For java.io.Serializable */
- private static final long serialVersionUID = 1L;
- /** {@inheritDoc} */
- @Override
- protected URI createUri(FileStatus i, UnixUserGroupInformation ugi,
- ClientProtocol nnproxy, HttpServletRequest request) throws IOException,
- URISyntaxException {
- return new URI(request.getScheme(), null, request.getServerName(), request
- .getServerPort(), "/streamFile", "filename=" + i.getPath() + "&ugi="
- + ugi, null);
- }
- /** {@inheritDoc} */
- @Override
- protected UnixUserGroupInformation getUGI(HttpServletRequest request) {
- return (UnixUserGroupInformation) request.getAttribute("authorized.ugi");
- }
- }