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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.http;</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.File;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.io.IOException;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.nio.file.Files;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.nio.file.Path;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.nio.file.Paths;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.ArrayList;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.util.List;</span> |
| <span class="source-line-no">027</span><span id="line-27">import java.util.concurrent.TimeUnit;</span> |
| <span class="source-line-no">028</span><span id="line-28">import java.util.concurrent.atomic.AtomicInteger;</span> |
| <span class="source-line-no">029</span><span id="line-29">import java.util.concurrent.locks.Lock;</span> |
| <span class="source-line-no">030</span><span id="line-30">import java.util.concurrent.locks.ReentrantLock;</span> |
| <span class="source-line-no">031</span><span id="line-31">import javax.servlet.http.HttpServlet;</span> |
| <span class="source-line-no">032</span><span id="line-32">import javax.servlet.http.HttpServletRequest;</span> |
| <span class="source-line-no">033</span><span id="line-33">import javax.servlet.http.HttpServletResponse;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.util.ProcessUtils;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.slf4j.Logger;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">038</span><span id="line-38"></span> |
| <span class="source-line-no">039</span><span id="line-39">import org.apache.hbase.thirdparty.com.google.common.base.Joiner;</span> |
| <span class="source-line-no">040</span><span id="line-40"></span> |
| <span class="source-line-no">041</span><span id="line-41">/**</span> |
| <span class="source-line-no">042</span><span id="line-42"> * Servlet that runs async-profiler as web-endpoint. Following options from async-profiler can be</span> |
| <span class="source-line-no">043</span><span id="line-43"> * specified as query paramater. // -e event profiling event: cpu|alloc|lock|cache-misses etc. // -d</span> |
| <span class="source-line-no">044</span><span id="line-44"> * duration run profiling for 'duration' seconds (integer) // -i interval sampling interval in</span> |
| <span class="source-line-no">045</span><span id="line-45"> * nanoseconds (long) // -j jstackdepth maximum Java stack depth (integer) // -b bufsize frame</span> |
| <span class="source-line-no">046</span><span id="line-46"> * buffer size (long) // -t profile different threads separately // -s simple class names instead of</span> |
| <span class="source-line-no">047</span><span id="line-47"> * FQN // -o fmt[,fmt...] output format: summary|traces|flat|collapsed|svg|tree|jfr|html // --width</span> |
| <span class="source-line-no">048</span><span id="line-48"> * px SVG width pixels (integer) // --height px SVG frame height pixels (integer) // --minwidth px</span> |
| <span class="source-line-no">049</span><span id="line-49"> * skip frames smaller than px (double) // --reverse generate stack-reversed FlameGraph / Call tree</span> |
| <span class="source-line-no">050</span><span id="line-50"> * Example: - To collect 30 second CPU profile of current process (returns FlameGraph svg) curl</span> |
| <span class="source-line-no">051</span><span id="line-51"> * "http://localhost:10002/prof" - To collect 1 minute CPU profile of current process and output in</span> |
| <span class="source-line-no">052</span><span id="line-52"> * tree format (html) curl "http://localhost:10002/prof?output=tree&amp;duration=60" - To collect 30</span> |
| <span class="source-line-no">053</span><span id="line-53"> * second heap allocation profile of current process (returns FlameGraph svg) curl</span> |
| <span class="source-line-no">054</span><span id="line-54"> * "http://localhost:10002/prof?event=alloc" - To collect lock contention profile of current process</span> |
| <span class="source-line-no">055</span><span id="line-55"> * (returns FlameGraph svg) curl "http://localhost:10002/prof?event=lock" Following event types are</span> |
| <span class="source-line-no">056</span><span id="line-56"> * supported (default is 'cpu') (NOTE: not all OS'es support all events) // Perf events: // cpu //</span> |
| <span class="source-line-no">057</span><span id="line-57"> * page-faults // context-switches // cycles // instructions // cache-references // cache-misses //</span> |
| <span class="source-line-no">058</span><span id="line-58"> * branches // branch-misses // bus-cycles // L1-dcache-load-misses // LLC-load-misses //</span> |
| <span class="source-line-no">059</span><span id="line-59"> * dTLB-load-misses // mem:breakpoint // trace:tracepoint // Java events: // alloc // lock</span> |
| <span class="source-line-no">060</span><span id="line-60"> */</span> |
| <span class="source-line-no">061</span><span id="line-61">@InterfaceAudience.Private</span> |
| <span class="source-line-no">062</span><span id="line-62">public class ProfileServlet extends HttpServlet {</span> |
| <span class="source-line-no">063</span><span id="line-63"></span> |
| <span class="source-line-no">064</span><span id="line-64"> private static final long serialVersionUID = 1L;</span> |
| <span class="source-line-no">065</span><span id="line-65"> private static final Logger LOG = LoggerFactory.getLogger(ProfileServlet.class);</span> |
| <span class="source-line-no">066</span><span id="line-66"></span> |
| <span class="source-line-no">067</span><span id="line-67"> private static final String ACCESS_CONTROL_ALLOW_METHODS = "Access-Control-Allow-Methods";</span> |
| <span class="source-line-no">068</span><span id="line-68"> private static final String ALLOWED_METHODS = "GET";</span> |
| <span class="source-line-no">069</span><span id="line-69"> private static final String ACCESS_CONTROL_ALLOW_ORIGIN = "Access-Control-Allow-Origin";</span> |
| <span class="source-line-no">070</span><span id="line-70"> private static final String CONTENT_TYPE_TEXT = "text/plain; charset=utf-8";</span> |
| <span class="source-line-no">071</span><span id="line-71"> private static final String ASYNC_PROFILER_HOME_ENV = "ASYNC_PROFILER_HOME";</span> |
| <span class="source-line-no">072</span><span id="line-72"> private static final String ASYNC_PROFILER_HOME_SYSTEM_PROPERTY = "async.profiler.home";</span> |
| <span class="source-line-no">073</span><span id="line-73"> private static final String OLD_PROFILER_SCRIPT = "profiler.sh";</span> |
| <span class="source-line-no">074</span><span id="line-74"> private static final String PROFILER_SCRIPT = "asprof";</span> |
| <span class="source-line-no">075</span><span id="line-75"> private static final int DEFAULT_DURATION_SECONDS = 10;</span> |
| <span class="source-line-no">076</span><span id="line-76"> private static final AtomicInteger ID_GEN = new AtomicInteger(0);</span> |
| <span class="source-line-no">077</span><span id="line-77"> static final String OUTPUT_DIR = System.getProperty("java.io.tmpdir") + "/prof-output-hbase";</span> |
| <span class="source-line-no">078</span><span id="line-78"></span> |
| <span class="source-line-no">079</span><span id="line-79"> enum Event {</span> |
| <span class="source-line-no">080</span><span id="line-80"> CPU("cpu"),</span> |
| <span class="source-line-no">081</span><span id="line-81"> WALL("wall"),</span> |
| <span class="source-line-no">082</span><span id="line-82"> ALLOC("alloc"),</span> |
| <span class="source-line-no">083</span><span id="line-83"> LOCK("lock"),</span> |
| <span class="source-line-no">084</span><span id="line-84"> PAGE_FAULTS("page-faults"),</span> |
| <span class="source-line-no">085</span><span id="line-85"> CONTEXT_SWITCHES("context-switches"),</span> |
| <span class="source-line-no">086</span><span id="line-86"> CYCLES("cycles"),</span> |
| <span class="source-line-no">087</span><span id="line-87"> INSTRUCTIONS("instructions"),</span> |
| <span class="source-line-no">088</span><span id="line-88"> CACHE_REFERENCES("cache-references"),</span> |
| <span class="source-line-no">089</span><span id="line-89"> CACHE_MISSES("cache-misses"),</span> |
| <span class="source-line-no">090</span><span id="line-90"> BRANCHES("branches"),</span> |
| <span class="source-line-no">091</span><span id="line-91"> BRANCH_MISSES("branch-misses"),</span> |
| <span class="source-line-no">092</span><span id="line-92"> BUS_CYCLES("bus-cycles"),</span> |
| <span class="source-line-no">093</span><span id="line-93"> L1_DCACHE_LOAD_MISSES("L1-dcache-load-misses"),</span> |
| <span class="source-line-no">094</span><span id="line-94"> LLC_LOAD_MISSES("LLC-load-misses"),</span> |
| <span class="source-line-no">095</span><span id="line-95"> DTLB_LOAD_MISSES("dTLB-load-misses"),</span> |
| <span class="source-line-no">096</span><span id="line-96"> MEM_BREAKPOINT("mem:breakpoint"),</span> |
| <span class="source-line-no">097</span><span id="line-97"> TRACE_TRACEPOINT("trace:tracepoint"),;</span> |
| <span class="source-line-no">098</span><span id="line-98"></span> |
| <span class="source-line-no">099</span><span id="line-99"> private final String internalName;</span> |
| <span class="source-line-no">100</span><span id="line-100"></span> |
| <span class="source-line-no">101</span><span id="line-101"> Event(final String internalName) {</span> |
| <span class="source-line-no">102</span><span id="line-102"> this.internalName = internalName;</span> |
| <span class="source-line-no">103</span><span id="line-103"> }</span> |
| <span class="source-line-no">104</span><span id="line-104"></span> |
| <span class="source-line-no">105</span><span id="line-105"> public String getInternalName() {</span> |
| <span class="source-line-no">106</span><span id="line-106"> return internalName;</span> |
| <span class="source-line-no">107</span><span id="line-107"> }</span> |
| <span class="source-line-no">108</span><span id="line-108"></span> |
| <span class="source-line-no">109</span><span id="line-109"> public static Event fromInternalName(final String name) {</span> |
| <span class="source-line-no">110</span><span id="line-110"> for (Event event : values()) {</span> |
| <span class="source-line-no">111</span><span id="line-111"> if (event.getInternalName().equalsIgnoreCase(name)) {</span> |
| <span class="source-line-no">112</span><span id="line-112"> return event;</span> |
| <span class="source-line-no">113</span><span id="line-113"> }</span> |
| <span class="source-line-no">114</span><span id="line-114"> }</span> |
| <span class="source-line-no">115</span><span id="line-115"></span> |
| <span class="source-line-no">116</span><span id="line-116"> return null;</span> |
| <span class="source-line-no">117</span><span id="line-117"> }</span> |
| <span class="source-line-no">118</span><span id="line-118"> }</span> |
| <span class="source-line-no">119</span><span id="line-119"></span> |
| <span class="source-line-no">120</span><span id="line-120"> enum Output {</span> |
| <span class="source-line-no">121</span><span id="line-121"> SUMMARY,</span> |
| <span class="source-line-no">122</span><span id="line-122"> TRACES,</span> |
| <span class="source-line-no">123</span><span id="line-123"> FLAT,</span> |
| <span class="source-line-no">124</span><span id="line-124"> COLLAPSED,</span> |
| <span class="source-line-no">125</span><span id="line-125"> // No SVG in 2.x asyncprofiler.</span> |
| <span class="source-line-no">126</span><span id="line-126"> SVG,</span> |
| <span class="source-line-no">127</span><span id="line-127"> TREE,</span> |
| <span class="source-line-no">128</span><span id="line-128"> JFR,</span> |
| <span class="source-line-no">129</span><span id="line-129"> // In 2.x asyncprofiler, this is how you get flamegraphs.</span> |
| <span class="source-line-no">130</span><span id="line-130"> HTML</span> |
| <span class="source-line-no">131</span><span id="line-131"> }</span> |
| <span class="source-line-no">132</span><span id="line-132"></span> |
| <span class="source-line-no">133</span><span id="line-133"> @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "SE_TRANSIENT_FIELD_NOT_RESTORED",</span> |
| <span class="source-line-no">134</span><span id="line-134"> justification = "This class is never serialized nor restored.")</span> |
| <span class="source-line-no">135</span><span id="line-135"> private transient Lock profilerLock = new ReentrantLock();</span> |
| <span class="source-line-no">136</span><span id="line-136"> private transient volatile Process process;</span> |
| <span class="source-line-no">137</span><span id="line-137"> private String asyncProfilerHome;</span> |
| <span class="source-line-no">138</span><span id="line-138"> private Integer pid;</span> |
| <span class="source-line-no">139</span><span id="line-139"></span> |
| <span class="source-line-no">140</span><span id="line-140"> public ProfileServlet() {</span> |
| <span class="source-line-no">141</span><span id="line-141"> this.asyncProfilerHome = getAsyncProfilerHome();</span> |
| <span class="source-line-no">142</span><span id="line-142"> this.pid = ProcessUtils.getPid();</span> |
| <span class="source-line-no">143</span><span id="line-143"> LOG.info("Servlet process PID: " + pid + " asyncProfilerHome: " + asyncProfilerHome);</span> |
| <span class="source-line-no">144</span><span id="line-144"> }</span> |
| <span class="source-line-no">145</span><span id="line-145"></span> |
| <span class="source-line-no">146</span><span id="line-146"> @Override</span> |
| <span class="source-line-no">147</span><span id="line-147"> protected void doGet(final HttpServletRequest req, final HttpServletResponse resp)</span> |
| <span class="source-line-no">148</span><span id="line-148"> throws IOException {</span> |
| <span class="source-line-no">149</span><span id="line-149"> if (!HttpServer.isInstrumentationAccessAllowed(getServletContext(), req, resp)) {</span> |
| <span class="source-line-no">150</span><span id="line-150"> resp.setStatus(HttpServletResponse.SC_UNAUTHORIZED);</span> |
| <span class="source-line-no">151</span><span id="line-151"> setResponseHeader(resp);</span> |
| <span class="source-line-no">152</span><span id="line-152"> resp.getWriter().write("Unauthorized: Instrumentation access is not allowed!");</span> |
| <span class="source-line-no">153</span><span id="line-153"> return;</span> |
| <span class="source-line-no">154</span><span id="line-154"> }</span> |
| <span class="source-line-no">155</span><span id="line-155"></span> |
| <span class="source-line-no">156</span><span id="line-156"> // make sure async profiler home is set</span> |
| <span class="source-line-no">157</span><span id="line-157"> if (asyncProfilerHome == null || asyncProfilerHome.trim().isEmpty()) {</span> |
| <span class="source-line-no">158</span><span id="line-158"> resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);</span> |
| <span class="source-line-no">159</span><span id="line-159"> setResponseHeader(resp);</span> |
| <span class="source-line-no">160</span><span id="line-160"> resp.getWriter()</span> |
| <span class="source-line-no">161</span><span id="line-161"> .write("ASYNC_PROFILER_HOME env is not set.\n\n"</span> |
| <span class="source-line-no">162</span><span id="line-162"> + "Please ensure the prerequsites for the Profiler Servlet have been installed and the\n"</span> |
| <span class="source-line-no">163</span><span id="line-163"> + "environment is properly configured. For more information please see\n"</span> |
| <span class="source-line-no">164</span><span id="line-164"> + "http://hbase.apache.org/book.html#profiler\n");</span> |
| <span class="source-line-no">165</span><span id="line-165"> return;</span> |
| <span class="source-line-no">166</span><span id="line-166"> }</span> |
| <span class="source-line-no">167</span><span id="line-167"></span> |
| <span class="source-line-no">168</span><span id="line-168"> // if pid is explicitly specified, use it else default to current process</span> |
| <span class="source-line-no">169</span><span id="line-169"> pid = getInteger(req, "pid", pid);</span> |
| <span class="source-line-no">170</span><span id="line-170"></span> |
| <span class="source-line-no">171</span><span id="line-171"> // if pid is not specified in query param and if current process pid cannot be determined</span> |
| <span class="source-line-no">172</span><span id="line-172"> if (pid == null) {</span> |
| <span class="source-line-no">173</span><span id="line-173"> resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);</span> |
| <span class="source-line-no">174</span><span id="line-174"> setResponseHeader(resp);</span> |
| <span class="source-line-no">175</span><span id="line-175"> resp.getWriter()</span> |
| <span class="source-line-no">176</span><span id="line-176"> .write("'pid' query parameter unspecified or unable to determine PID of current process.");</span> |
| <span class="source-line-no">177</span><span id="line-177"> return;</span> |
| <span class="source-line-no">178</span><span id="line-178"> }</span> |
| <span class="source-line-no">179</span><span id="line-179"></span> |
| <span class="source-line-no">180</span><span id="line-180"> final int duration = getInteger(req, "duration", DEFAULT_DURATION_SECONDS);</span> |
| <span class="source-line-no">181</span><span id="line-181"> final Output output = getOutput(req);</span> |
| <span class="source-line-no">182</span><span id="line-182"> final Event event = getEvent(req);</span> |
| <span class="source-line-no">183</span><span id="line-183"> final Long interval = getLong(req, "interval");</span> |
| <span class="source-line-no">184</span><span id="line-184"> final Integer jstackDepth = getInteger(req, "jstackdepth", null);</span> |
| <span class="source-line-no">185</span><span id="line-185"> final Long bufsize = getLong(req, "bufsize");</span> |
| <span class="source-line-no">186</span><span id="line-186"> final boolean thread = req.getParameterMap().containsKey("thread");</span> |
| <span class="source-line-no">187</span><span id="line-187"> final boolean simple = req.getParameterMap().containsKey("simple");</span> |
| <span class="source-line-no">188</span><span id="line-188"> final Integer width = getInteger(req, "width", null);</span> |
| <span class="source-line-no">189</span><span id="line-189"> final Integer height = getInteger(req, "height", null);</span> |
| <span class="source-line-no">190</span><span id="line-190"> final Double minwidth = getMinWidth(req);</span> |
| <span class="source-line-no">191</span><span id="line-191"> final boolean reverse = req.getParameterMap().containsKey("reverse");</span> |
| <span class="source-line-no">192</span><span id="line-192"></span> |
| <span class="source-line-no">193</span><span id="line-193"> if (process == null || !process.isAlive()) {</span> |
| <span class="source-line-no">194</span><span id="line-194"> try {</span> |
| <span class="source-line-no">195</span><span id="line-195"> int lockTimeoutSecs = 3;</span> |
| <span class="source-line-no">196</span><span id="line-196"> if (profilerLock.tryLock(lockTimeoutSecs, TimeUnit.SECONDS)) {</span> |
| <span class="source-line-no">197</span><span id="line-197"> try {</span> |
| <span class="source-line-no">198</span><span id="line-198"> File outputFile =</span> |
| <span class="source-line-no">199</span><span id="line-199"> new File(OUTPUT_DIR, "async-prof-pid-" + pid + "-" + event.name().toLowerCase() + "-"</span> |
| <span class="source-line-no">200</span><span id="line-200"> + ID_GEN.incrementAndGet() + "." + output.name().toLowerCase());</span> |
| <span class="source-line-no">201</span><span id="line-201"> Files.createDirectories(Paths.get(OUTPUT_DIR));</span> |
| <span class="source-line-no">202</span><span id="line-202"> List<String> cmd = new ArrayList<>();</span> |
| <span class="source-line-no">203</span><span id="line-203"> Path profilerScriptPath = Paths.get(asyncProfilerHome, "bin", PROFILER_SCRIPT);</span> |
| <span class="source-line-no">204</span><span id="line-204"> if (!Files.exists(profilerScriptPath)) {</span> |
| <span class="source-line-no">205</span><span id="line-205"> LOG.info(</span> |
| <span class="source-line-no">206</span><span id="line-206"> "async-profiler script {} does not exist, fallback to use old script {}(version <= 2.9).",</span> |
| <span class="source-line-no">207</span><span id="line-207"> PROFILER_SCRIPT, OLD_PROFILER_SCRIPT);</span> |
| <span class="source-line-no">208</span><span id="line-208"> profilerScriptPath = Paths.get(asyncProfilerHome, OLD_PROFILER_SCRIPT);</span> |
| <span class="source-line-no">209</span><span id="line-209"> }</span> |
| <span class="source-line-no">210</span><span id="line-210"> cmd.add(profilerScriptPath.toString());</span> |
| <span class="source-line-no">211</span><span id="line-211"> cmd.add("-e");</span> |
| <span class="source-line-no">212</span><span id="line-212"> cmd.add(event.getInternalName());</span> |
| <span class="source-line-no">213</span><span id="line-213"> cmd.add("-d");</span> |
| <span class="source-line-no">214</span><span id="line-214"> cmd.add("" + duration);</span> |
| <span class="source-line-no">215</span><span id="line-215"> cmd.add("-o");</span> |
| <span class="source-line-no">216</span><span id="line-216"> cmd.add(output.name().toLowerCase());</span> |
| <span class="source-line-no">217</span><span id="line-217"> cmd.add("-f");</span> |
| <span class="source-line-no">218</span><span id="line-218"> cmd.add(outputFile.getAbsolutePath());</span> |
| <span class="source-line-no">219</span><span id="line-219"> if (interval != null) {</span> |
| <span class="source-line-no">220</span><span id="line-220"> cmd.add("-i");</span> |
| <span class="source-line-no">221</span><span id="line-221"> cmd.add(interval.toString());</span> |
| <span class="source-line-no">222</span><span id="line-222"> }</span> |
| <span class="source-line-no">223</span><span id="line-223"> if (jstackDepth != null) {</span> |
| <span class="source-line-no">224</span><span id="line-224"> cmd.add("-j");</span> |
| <span class="source-line-no">225</span><span id="line-225"> cmd.add(jstackDepth.toString());</span> |
| <span class="source-line-no">226</span><span id="line-226"> }</span> |
| <span class="source-line-no">227</span><span id="line-227"> if (bufsize != null) {</span> |
| <span class="source-line-no">228</span><span id="line-228"> cmd.add("-b");</span> |
| <span class="source-line-no">229</span><span id="line-229"> cmd.add(bufsize.toString());</span> |
| <span class="source-line-no">230</span><span id="line-230"> }</span> |
| <span class="source-line-no">231</span><span id="line-231"> if (thread) {</span> |
| <span class="source-line-no">232</span><span id="line-232"> cmd.add("-t");</span> |
| <span class="source-line-no">233</span><span id="line-233"> }</span> |
| <span class="source-line-no">234</span><span id="line-234"> if (simple) {</span> |
| <span class="source-line-no">235</span><span id="line-235"> cmd.add("-s");</span> |
| <span class="source-line-no">236</span><span id="line-236"> }</span> |
| <span class="source-line-no">237</span><span id="line-237"> if (width != null) {</span> |
| <span class="source-line-no">238</span><span id="line-238"> cmd.add("--width");</span> |
| <span class="source-line-no">239</span><span id="line-239"> cmd.add(width.toString());</span> |
| <span class="source-line-no">240</span><span id="line-240"> }</span> |
| <span class="source-line-no">241</span><span id="line-241"> if (height != null) {</span> |
| <span class="source-line-no">242</span><span id="line-242"> cmd.add("--height");</span> |
| <span class="source-line-no">243</span><span id="line-243"> cmd.add(height.toString());</span> |
| <span class="source-line-no">244</span><span id="line-244"> }</span> |
| <span class="source-line-no">245</span><span id="line-245"> if (minwidth != null) {</span> |
| <span class="source-line-no">246</span><span id="line-246"> cmd.add("--minwidth");</span> |
| <span class="source-line-no">247</span><span id="line-247"> cmd.add(minwidth.toString());</span> |
| <span class="source-line-no">248</span><span id="line-248"> }</span> |
| <span class="source-line-no">249</span><span id="line-249"> if (reverse) {</span> |
| <span class="source-line-no">250</span><span id="line-250"> cmd.add("--reverse");</span> |
| <span class="source-line-no">251</span><span id="line-251"> }</span> |
| <span class="source-line-no">252</span><span id="line-252"> cmd.add(pid.toString());</span> |
| <span class="source-line-no">253</span><span id="line-253"> process = ProcessUtils.runCmdAsync(cmd);</span> |
| <span class="source-line-no">254</span><span id="line-254"></span> |
| <span class="source-line-no">255</span><span id="line-255"> // set response and set refresh header to output location</span> |
| <span class="source-line-no">256</span><span id="line-256"> setResponseHeader(resp);</span> |
| <span class="source-line-no">257</span><span id="line-257"> resp.setStatus(HttpServletResponse.SC_ACCEPTED);</span> |
| <span class="source-line-no">258</span><span id="line-258"> String relativeUrl = "/prof-output-hbase/" + outputFile.getName();</span> |
| <span class="source-line-no">259</span><span id="line-259"> resp.getWriter()</span> |
| <span class="source-line-no">260</span><span id="line-260"> .write("Started [" + event.getInternalName()</span> |
| <span class="source-line-no">261</span><span id="line-261"> + "] profiling. This page will automatically redirect to " + relativeUrl + " after "</span> |
| <span class="source-line-no">262</span><span id="line-262"> + duration + " seconds. "</span> |
| <span class="source-line-no">263</span><span id="line-263"> + "If empty diagram and Linux 4.6+, see 'Basic Usage' section on the Async "</span> |
| <span class="source-line-no">264</span><span id="line-264"> + "Profiler Home Page, https://github.com/jvm-profiling-tools/async-profiler."</span> |
| <span class="source-line-no">265</span><span id="line-265"> + "\n\nCommand:\n" + Joiner.on(" ").join(cmd));</span> |
| <span class="source-line-no">266</span><span id="line-266"></span> |
| <span class="source-line-no">267</span><span id="line-267"> // to avoid auto-refresh by ProfileOutputServlet, refreshDelay can be specified</span> |
| <span class="source-line-no">268</span><span id="line-268"> // via url param</span> |
| <span class="source-line-no">269</span><span id="line-269"> int refreshDelay = getInteger(req, "refreshDelay", 0);</span> |
| <span class="source-line-no">270</span><span id="line-270"></span> |
| <span class="source-line-no">271</span><span id="line-271"> // instead of sending redirect, set auto-refresh so that browsers will refresh</span> |
| <span class="source-line-no">272</span><span id="line-272"> // with redirected url</span> |
| <span class="source-line-no">273</span><span id="line-273"> resp.setHeader("Refresh", (duration + refreshDelay) + ";" + relativeUrl);</span> |
| <span class="source-line-no">274</span><span id="line-274"> resp.getWriter().flush();</span> |
| <span class="source-line-no">275</span><span id="line-275"> } finally {</span> |
| <span class="source-line-no">276</span><span id="line-276"> profilerLock.unlock();</span> |
| <span class="source-line-no">277</span><span id="line-277"> }</span> |
| <span class="source-line-no">278</span><span id="line-278"> } else {</span> |
| <span class="source-line-no">279</span><span id="line-279"> setResponseHeader(resp);</span> |
| <span class="source-line-no">280</span><span id="line-280"> resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);</span> |
| <span class="source-line-no">281</span><span id="line-281"> resp.getWriter()</span> |
| <span class="source-line-no">282</span><span id="line-282"> .write("Unable to acquire lock. Another instance of profiler might be running.");</span> |
| <span class="source-line-no">283</span><span id="line-283"> LOG.warn("Unable to acquire lock in " + lockTimeoutSecs</span> |
| <span class="source-line-no">284</span><span id="line-284"> + " seconds. Another instance of profiler might be running.");</span> |
| <span class="source-line-no">285</span><span id="line-285"> }</span> |
| <span class="source-line-no">286</span><span id="line-286"> } catch (InterruptedException e) {</span> |
| <span class="source-line-no">287</span><span id="line-287"> LOG.warn("Interrupted while acquiring profile lock.", e);</span> |
| <span class="source-line-no">288</span><span id="line-288"> resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);</span> |
| <span class="source-line-no">289</span><span id="line-289"> }</span> |
| <span class="source-line-no">290</span><span id="line-290"> } else {</span> |
| <span class="source-line-no">291</span><span id="line-291"> setResponseHeader(resp);</span> |
| <span class="source-line-no">292</span><span id="line-292"> resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);</span> |
| <span class="source-line-no">293</span><span id="line-293"> resp.getWriter().write("Another instance of profiler is already running.");</span> |
| <span class="source-line-no">294</span><span id="line-294"> }</span> |
| <span class="source-line-no">295</span><span id="line-295"> }</span> |
| <span class="source-line-no">296</span><span id="line-296"></span> |
| <span class="source-line-no">297</span><span id="line-297"> private Integer getInteger(final HttpServletRequest req, final String param,</span> |
| <span class="source-line-no">298</span><span id="line-298"> final Integer defaultValue) {</span> |
| <span class="source-line-no">299</span><span id="line-299"> final String value = req.getParameter(param);</span> |
| <span class="source-line-no">300</span><span id="line-300"> if (value != null) {</span> |
| <span class="source-line-no">301</span><span id="line-301"> try {</span> |
| <span class="source-line-no">302</span><span id="line-302"> return Integer.valueOf(value);</span> |
| <span class="source-line-no">303</span><span id="line-303"> } catch (NumberFormatException e) {</span> |
| <span class="source-line-no">304</span><span id="line-304"> return defaultValue;</span> |
| <span class="source-line-no">305</span><span id="line-305"> }</span> |
| <span class="source-line-no">306</span><span id="line-306"> }</span> |
| <span class="source-line-no">307</span><span id="line-307"> return defaultValue;</span> |
| <span class="source-line-no">308</span><span id="line-308"> }</span> |
| <span class="source-line-no">309</span><span id="line-309"></span> |
| <span class="source-line-no">310</span><span id="line-310"> private Long getLong(final HttpServletRequest req, final String param) {</span> |
| <span class="source-line-no">311</span><span id="line-311"> final String value = req.getParameter(param);</span> |
| <span class="source-line-no">312</span><span id="line-312"> if (value != null) {</span> |
| <span class="source-line-no">313</span><span id="line-313"> try {</span> |
| <span class="source-line-no">314</span><span id="line-314"> return Long.valueOf(value);</span> |
| <span class="source-line-no">315</span><span id="line-315"> } catch (NumberFormatException e) {</span> |
| <span class="source-line-no">316</span><span id="line-316"> return null;</span> |
| <span class="source-line-no">317</span><span id="line-317"> }</span> |
| <span class="source-line-no">318</span><span id="line-318"> }</span> |
| <span class="source-line-no">319</span><span id="line-319"> return null;</span> |
| <span class="source-line-no">320</span><span id="line-320"> }</span> |
| <span class="source-line-no">321</span><span id="line-321"></span> |
| <span class="source-line-no">322</span><span id="line-322"> private Double getMinWidth(final HttpServletRequest req) {</span> |
| <span class="source-line-no">323</span><span id="line-323"> final String value = req.getParameter("minwidth");</span> |
| <span class="source-line-no">324</span><span id="line-324"> if (value != null) {</span> |
| <span class="source-line-no">325</span><span id="line-325"> try {</span> |
| <span class="source-line-no">326</span><span id="line-326"> return Double.valueOf(value);</span> |
| <span class="source-line-no">327</span><span id="line-327"> } catch (NumberFormatException e) {</span> |
| <span class="source-line-no">328</span><span id="line-328"> return null;</span> |
| <span class="source-line-no">329</span><span id="line-329"> }</span> |
| <span class="source-line-no">330</span><span id="line-330"> }</span> |
| <span class="source-line-no">331</span><span id="line-331"> return null;</span> |
| <span class="source-line-no">332</span><span id="line-332"> }</span> |
| <span class="source-line-no">333</span><span id="line-333"></span> |
| <span class="source-line-no">334</span><span id="line-334"> private Event getEvent(final HttpServletRequest req) {</span> |
| <span class="source-line-no">335</span><span id="line-335"> final String eventArg = req.getParameter("event");</span> |
| <span class="source-line-no">336</span><span id="line-336"> if (eventArg != null) {</span> |
| <span class="source-line-no">337</span><span id="line-337"> Event event = Event.fromInternalName(eventArg);</span> |
| <span class="source-line-no">338</span><span id="line-338"> return event == null ? Event.CPU : event;</span> |
| <span class="source-line-no">339</span><span id="line-339"> }</span> |
| <span class="source-line-no">340</span><span id="line-340"> return Event.CPU;</span> |
| <span class="source-line-no">341</span><span id="line-341"> }</span> |
| <span class="source-line-no">342</span><span id="line-342"></span> |
| <span class="source-line-no">343</span><span id="line-343"> private Output getOutput(final HttpServletRequest req) {</span> |
| <span class="source-line-no">344</span><span id="line-344"> final String outputArg = req.getParameter("output");</span> |
| <span class="source-line-no">345</span><span id="line-345"> if (req.getParameter("output") != null) {</span> |
| <span class="source-line-no">346</span><span id="line-346"> try {</span> |
| <span class="source-line-no">347</span><span id="line-347"> return Output.valueOf(outputArg.trim().toUpperCase());</span> |
| <span class="source-line-no">348</span><span id="line-348"> } catch (IllegalArgumentException e) {</span> |
| <span class="source-line-no">349</span><span id="line-349"> return Output.HTML;</span> |
| <span class="source-line-no">350</span><span id="line-350"> }</span> |
| <span class="source-line-no">351</span><span id="line-351"> }</span> |
| <span class="source-line-no">352</span><span id="line-352"> return Output.HTML;</span> |
| <span class="source-line-no">353</span><span id="line-353"> }</span> |
| <span class="source-line-no">354</span><span id="line-354"></span> |
| <span class="source-line-no">355</span><span id="line-355"> static void setResponseHeader(final HttpServletResponse response) {</span> |
| <span class="source-line-no">356</span><span id="line-356"> response.setHeader(ACCESS_CONTROL_ALLOW_METHODS, ALLOWED_METHODS);</span> |
| <span class="source-line-no">357</span><span id="line-357"> response.setHeader(ACCESS_CONTROL_ALLOW_ORIGIN, "*");</span> |
| <span class="source-line-no">358</span><span id="line-358"> response.setContentType(CONTENT_TYPE_TEXT);</span> |
| <span class="source-line-no">359</span><span id="line-359"> }</span> |
| <span class="source-line-no">360</span><span id="line-360"></span> |
| <span class="source-line-no">361</span><span id="line-361"> static String getAsyncProfilerHome() {</span> |
| <span class="source-line-no">362</span><span id="line-362"> String asyncProfilerHome = System.getenv(ASYNC_PROFILER_HOME_ENV);</span> |
| <span class="source-line-no">363</span><span id="line-363"> // if ENV is not set, see if -Dasync.profiler.home=/path/to/async/profiler/home is set</span> |
| <span class="source-line-no">364</span><span id="line-364"> if (asyncProfilerHome == null || asyncProfilerHome.trim().isEmpty()) {</span> |
| <span class="source-line-no">365</span><span id="line-365"> asyncProfilerHome = System.getProperty(ASYNC_PROFILER_HOME_SYSTEM_PROPERTY);</span> |
| <span class="source-line-no">366</span><span id="line-366"> }</span> |
| <span class="source-line-no">367</span><span id="line-367"></span> |
| <span class="source-line-no">368</span><span id="line-368"> return asyncProfilerHome;</span> |
| <span class="source-line-no">369</span><span id="line-369"> }</span> |
| <span class="source-line-no">370</span><span id="line-370"></span> |
| <span class="source-line-no">371</span><span id="line-371"> public static class DisabledServlet extends HttpServlet {</span> |
| <span class="source-line-no">372</span><span id="line-372"></span> |
| <span class="source-line-no">373</span><span id="line-373"> private static final long serialVersionUID = 1L;</span> |
| <span class="source-line-no">374</span><span id="line-374"></span> |
| <span class="source-line-no">375</span><span id="line-375"> @Override</span> |
| <span class="source-line-no">376</span><span id="line-376"> protected void doGet(final HttpServletRequest req, final HttpServletResponse resp)</span> |
| <span class="source-line-no">377</span><span id="line-377"> throws IOException {</span> |
| <span class="source-line-no">378</span><span id="line-378"> resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);</span> |
| <span class="source-line-no">379</span><span id="line-379"> setResponseHeader(resp);</span> |
| <span class="source-line-no">380</span><span id="line-380"> resp.getWriter()</span> |
| <span class="source-line-no">381</span><span id="line-381"> .write("The profiler servlet was disabled at startup.\n\n"</span> |
| <span class="source-line-no">382</span><span id="line-382"> + "Please ensure the prerequisites for the Profiler Servlet have been installed and the\n"</span> |
| <span class="source-line-no">383</span><span id="line-383"> + "environment is properly configured. For more information please see\n"</span> |
| <span class="source-line-no">384</span><span id="line-384"> + "http://hbase.apache.org/book.html#profiler\n");</span> |
| <span class="source-line-no">385</span><span id="line-385"> return;</span> |
| <span class="source-line-no">386</span><span id="line-386"> }</span> |
| <span class="source-line-no">387</span><span id="line-387"></span> |
| <span class="source-line-no">388</span><span id="line-388"> }</span> |
| <span class="source-line-no">389</span><span id="line-389"></span> |
| <span class="source-line-no">390</span><span id="line-390">}</span> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
