/**
*
* 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.hbase.regionserver;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.tmpl.regionserver.RSStatusTmpl;
@InterfaceAudience.Private
public class RSStatusServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException
{
HRegionServer hrs = (HRegionServer)getServletContext().getAttribute(
HRegionServer.REGIONSERVER);
assert hrs != null : "No RS in context!";
resp.setContentType("text/html");
if (!hrs.isOnline()) {
resp.getWriter().write("The RegionServer is initializing!");
resp.getWriter().close();
return;
}
RSStatusTmpl tmpl = new RSStatusTmpl();
if (req.getParameter("format") != null)
tmpl.setFormat(req.getParameter("format"));
if (req.getParameter("filter") != null)
tmpl.setFilter(req.getParameter("filter"));
if (req.getParameter("bcn") != null)
tmpl.setBcn(req.getParameter("bcn"));
if (req.getParameter("bcv") != null)
tmpl.setBcv(req.getParameter("bcv"));
tmpl.render(resp.getWriter(), hrs);
}
}