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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.rest;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.io.IOException;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.io.OutputStream;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.io.PrintStream;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.io.PrintWriter;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.util.Date;</span> |
| <span class="source-line-no">025</span><span id="line-25">import javax.servlet.http.HttpServletRequest;</span> |
| <span class="source-line-no">026</span><span id="line-26">import javax.servlet.http.HttpServletResponse;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.http.HttpServer;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.monitoring.StateDumpServlet;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.util.LogMonitoring;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.util.Threads;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">033</span><span id="line-33"></span> |
| <span class="source-line-no">034</span><span id="line-34">@InterfaceAudience.Private</span> |
| <span class="source-line-no">035</span><span id="line-35">public class RESTDumpServlet extends StateDumpServlet {</span> |
| <span class="source-line-no">036</span><span id="line-36"> private static final long serialVersionUID = 1L;</span> |
| <span class="source-line-no">037</span><span id="line-37"> private static final String LINE = "===========================================================";</span> |
| <span class="source-line-no">038</span><span id="line-38"></span> |
| <span class="source-line-no">039</span><span id="line-39"> @Override</span> |
| <span class="source-line-no">040</span><span id="line-40"> public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {</span> |
| <span class="source-line-no">041</span><span id="line-41"> if (!HttpServer.isInstrumentationAccessAllowed(getServletContext(), request, response)) {</span> |
| <span class="source-line-no">042</span><span id="line-42"> return;</span> |
| <span class="source-line-no">043</span><span id="line-43"> }</span> |
| <span class="source-line-no">044</span><span id="line-44"></span> |
| <span class="source-line-no">045</span><span id="line-45"> RESTServer restServer = (RESTServer) getServletContext().getAttribute(RESTServer.REST_SERVER);</span> |
| <span class="source-line-no">046</span><span id="line-46"> assert restServer != null : "No REST Server in context!";</span> |
| <span class="source-line-no">047</span><span id="line-47"></span> |
| <span class="source-line-no">048</span><span id="line-48"> response.setContentType("text/plain");</span> |
| <span class="source-line-no">049</span><span id="line-49"> OutputStream os = response.getOutputStream();</span> |
| <span class="source-line-no">050</span><span id="line-50"> try (PrintWriter out = new PrintWriter(os)) {</span> |
| <span class="source-line-no">051</span><span id="line-51"></span> |
| <span class="source-line-no">052</span><span id="line-52"> out.println("REST Server status for " + restServer.getServerName() + " as of " + new Date());</span> |
| <span class="source-line-no">053</span><span id="line-53"></span> |
| <span class="source-line-no">054</span><span id="line-54"> out.println("\n\nVersion Info:");</span> |
| <span class="source-line-no">055</span><span id="line-55"> out.println(LINE);</span> |
| <span class="source-line-no">056</span><span id="line-56"> dumpVersionInfo(out);</span> |
| <span class="source-line-no">057</span><span id="line-57"></span> |
| <span class="source-line-no">058</span><span id="line-58"> out.println("\n\nStacks:");</span> |
| <span class="source-line-no">059</span><span id="line-59"> out.println(LINE);</span> |
| <span class="source-line-no">060</span><span id="line-60"> out.flush();</span> |
| <span class="source-line-no">061</span><span id="line-61"> PrintStream ps = new PrintStream(response.getOutputStream(), false, "UTF-8");</span> |
| <span class="source-line-no">062</span><span id="line-62"> Threads.printThreadInfo(ps, "");</span> |
| <span class="source-line-no">063</span><span id="line-63"> ps.flush();</span> |
| <span class="source-line-no">064</span><span id="line-64"></span> |
| <span class="source-line-no">065</span><span id="line-65"> out.println("\n\nREST Server configuration:");</span> |
| <span class="source-line-no">066</span><span id="line-66"> out.println(LINE);</span> |
| <span class="source-line-no">067</span><span id="line-67"> Configuration conf = restServer.conf;</span> |
| <span class="source-line-no">068</span><span id="line-68"> out.flush();</span> |
| <span class="source-line-no">069</span><span id="line-69"> conf.writeXml(os);</span> |
| <span class="source-line-no">070</span><span id="line-70"> os.flush();</span> |
| <span class="source-line-no">071</span><span id="line-71"></span> |
| <span class="source-line-no">072</span><span id="line-72"> out.println("\n\nLogs");</span> |
| <span class="source-line-no">073</span><span id="line-73"> out.println(LINE);</span> |
| <span class="source-line-no">074</span><span id="line-74"> long tailKb = getTailKbParam(request);</span> |
| <span class="source-line-no">075</span><span id="line-75"> LogMonitoring.dumpTailOfLogs(out, tailKb);</span> |
| <span class="source-line-no">076</span><span id="line-76"></span> |
| <span class="source-line-no">077</span><span id="line-77"> out.flush();</span> |
| <span class="source-line-no">078</span><span id="line-78"> }</span> |
| <span class="source-line-no">079</span><span id="line-79"> }</span> |
| <span class="source-line-no">080</span><span id="line-80">}</span> |
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| </pre> |
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