| /** |
| * |
| * 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.yetus.audience.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); |
| } |
| } |