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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.regionserver;</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.PrintWriter;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.io.StringWriter;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.lang.management.ManagementFactory;</span> |
| <span class="source-line-no">024</span><span id="line-24">import javax.management.MBeanServer;</span> |
| <span class="source-line-no">025</span><span id="line-25">import javax.management.MalformedObjectNameException;</span> |
| <span class="source-line-no">026</span><span id="line-26">import javax.management.ObjectName;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.util.JSONBean;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">029</span><span id="line-29"></span> |
| <span class="source-line-no">030</span><span id="line-30">/**</span> |
| <span class="source-line-no">031</span><span id="line-31"> * Utility for doing JSON and MBeans.</span> |
| <span class="source-line-no">032</span><span id="line-32"> */</span> |
| <span class="source-line-no">033</span><span id="line-33">@InterfaceAudience.Private</span> |
| <span class="source-line-no">034</span><span id="line-34">public final class DumpRegionServerMetrics {</span> |
| <span class="source-line-no">035</span><span id="line-35"> /**</span> |
| <span class="source-line-no">036</span><span id="line-36"> * Dump out a subset of regionserver mbeans only, not all of them, as json on System.out.</span> |
| <span class="source-line-no">037</span><span id="line-37"> */</span> |
| <span class="source-line-no">038</span><span id="line-38"> public static String dumpMetrics() throws MalformedObjectNameException, IOException {</span> |
| <span class="source-line-no">039</span><span id="line-39"> StringWriter sw = new StringWriter(1024 * 100); // Guess this size</span> |
| <span class="source-line-no">040</span><span id="line-40"> try (PrintWriter writer = new PrintWriter(sw)) {</span> |
| <span class="source-line-no">041</span><span id="line-41"> JSONBean dumper = new JSONBean();</span> |
| <span class="source-line-no">042</span><span id="line-42"> try (JSONBean.Writer jsonBeanWriter = dumper.open(writer)) {</span> |
| <span class="source-line-no">043</span><span id="line-43"> MBeanServer mbeanServer = ManagementFactory.getPlatformMBeanServer();</span> |
| <span class="source-line-no">044</span><span id="line-44"> jsonBeanWriter.write(mbeanServer, new ObjectName("java.lang:type=Memory"), null, false);</span> |
| <span class="source-line-no">045</span><span id="line-45"> jsonBeanWriter.write(mbeanServer,</span> |
| <span class="source-line-no">046</span><span id="line-46"> new ObjectName("Hadoop:service=HBase,name=RegionServer,sub=IPC"), null, false);</span> |
| <span class="source-line-no">047</span><span id="line-47"> jsonBeanWriter.write(mbeanServer,</span> |
| <span class="source-line-no">048</span><span id="line-48"> new ObjectName("Hadoop:service=HBase,name=RegionServer,sub=Replication"), null, false);</span> |
| <span class="source-line-no">049</span><span id="line-49"> jsonBeanWriter.write(mbeanServer,</span> |
| <span class="source-line-no">050</span><span id="line-50"> new ObjectName("Hadoop:service=HBase,name=RegionServer,sub=Server"), null, false);</span> |
| <span class="source-line-no">051</span><span id="line-51"> }</span> |
| <span class="source-line-no">052</span><span id="line-52"> }</span> |
| <span class="source-line-no">053</span><span id="line-53"> sw.close();</span> |
| <span class="source-line-no">054</span><span id="line-54"> return sw.toString();</span> |
| <span class="source-line-no">055</span><span id="line-55"> }</span> |
| <span class="source-line-no">056</span><span id="line-56"></span> |
| <span class="source-line-no">057</span><span id="line-57"> public static void main(String[] args) throws IOException, MalformedObjectNameException {</span> |
| <span class="source-line-no">058</span><span id="line-58"> String str = dumpMetrics();</span> |
| <span class="source-line-no">059</span><span id="line-59"> System.out.println(str);</span> |
| <span class="source-line-no">060</span><span id="line-60"> }</span> |
| <span class="source-line-no">061</span><span id="line-61"></span> |
| <span class="source-line-no">062</span><span id="line-62"> private DumpRegionServerMetrics() {</span> |
| <span class="source-line-no">063</span><span id="line-63"> }</span> |
| <span class="source-line-no">064</span><span id="line-64">}</span> |
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