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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.http;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.File;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.ArrayList;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.List;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.concurrent.TimeUnit;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.concurrent.locks.Lock;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.concurrent.locks.ReentrantLock;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import javax.servlet.http.HttpServlet;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import javax.servlet.http.HttpServletRequest;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import javax.servlet.http.HttpServletResponse;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.util.ProcessUtils;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.slf4j.Logger;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.slf4j.LoggerFactory;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span><a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hbase.thirdparty.com.google.common.base.Joiner;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span><a name="line.37"></a> |
| <span class="sourceLineNo">038</span>/**<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * Servlet that runs async-profiler as web-endpoint. Following options from async-profiler can be<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * specified as query paramater. // -e event profiling event: cpu|alloc|lock|cache-misses etc. // -d<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * duration run profiling for 'duration' seconds (integer) // -i interval sampling interval in<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * nanoseconds (long) // -j jstackdepth maximum Java stack depth (integer) // -b bufsize frame<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * buffer size (long) // -t profile different threads separately // -s simple class names instead of<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> * FQN // -o fmt[,fmt...] output format: summary|traces|flat|collapsed|svg|tree|jfr|html // --width<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * px SVG width pixels (integer) // --height px SVG frame height pixels (integer) // --minwidth px<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * skip frames smaller than px (double) // --reverse generate stack-reversed FlameGraph / Call tree<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * Example: - To collect 30 second CPU profile of current process (returns FlameGraph svg) curl<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * "http://localhost:10002/prof" - To collect 1 minute CPU profile of current process and output in<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * tree format (html) curl "http://localhost:10002/prof?output=tree&amp;duration=60" - To collect 30<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * second heap allocation profile of current process (returns FlameGraph svg) curl<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * "http://localhost:10002/prof?event=alloc" - To collect lock contention profile of current process<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * (returns FlameGraph svg) curl "http://localhost:10002/prof?event=lock" Following event types are<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * supported (default is 'cpu') (NOTE: not all OS'es support all events) // Perf events: // cpu //<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> * page-faults // context-switches // cycles // instructions // cache-references // cache-misses //<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * branches // branch-misses // bus-cycles // L1-dcache-load-misses // LLC-load-misses //<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * dTLB-load-misses // mem:breakpoint // trace:tracepoint // Java events: // alloc // lock<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> */<a name="line.57"></a> |
| <span class="sourceLineNo">058</span>@InterfaceAudience.Private<a name="line.58"></a> |
| <span class="sourceLineNo">059</span>public class ProfileServlet extends HttpServlet {<a name="line.59"></a> |
| <span class="sourceLineNo">060</span><a name="line.60"></a> |
| <span class="sourceLineNo">061</span> private static final long serialVersionUID = 1L;<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> private static final Logger LOG = LoggerFactory.getLogger(ProfileServlet.class);<a name="line.62"></a> |
| <span class="sourceLineNo">063</span><a name="line.63"></a> |
| <span class="sourceLineNo">064</span> private static final String ACCESS_CONTROL_ALLOW_METHODS = "Access-Control-Allow-Methods";<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> private static final String ALLOWED_METHODS = "GET";<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> private static final String ACCESS_CONTROL_ALLOW_ORIGIN = "Access-Control-Allow-Origin";<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> private static final String CONTENT_TYPE_TEXT = "text/plain; charset=utf-8";<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> private static final String ASYNC_PROFILER_HOME_ENV = "ASYNC_PROFILER_HOME";<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> private static final String ASYNC_PROFILER_HOME_SYSTEM_PROPERTY = "async.profiler.home";<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> private static final String PROFILER_SCRIPT = "/profiler.sh";<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> private static final int DEFAULT_DURATION_SECONDS = 10;<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> private static final AtomicInteger ID_GEN = new AtomicInteger(0);<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> static final String OUTPUT_DIR = System.getProperty("java.io.tmpdir") + "/prof-output-hbase";<a name="line.73"></a> |
| <span class="sourceLineNo">074</span><a name="line.74"></a> |
| <span class="sourceLineNo">075</span> enum Event {<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> CPU("cpu"),<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> WALL("wall"),<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> ALLOC("alloc"),<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> LOCK("lock"),<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> PAGE_FAULTS("page-faults"),<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> CONTEXT_SWITCHES("context-switches"),<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> CYCLES("cycles"),<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> INSTRUCTIONS("instructions"),<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> CACHE_REFERENCES("cache-references"),<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> CACHE_MISSES("cache-misses"),<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> BRANCHES("branches"),<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> BRANCH_MISSES("branch-misses"),<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> BUS_CYCLES("bus-cycles"),<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> L1_DCACHE_LOAD_MISSES("L1-dcache-load-misses"),<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> LLC_LOAD_MISSES("LLC-load-misses"),<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> DTLB_LOAD_MISSES("dTLB-load-misses"),<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> MEM_BREAKPOINT("mem:breakpoint"),<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> TRACE_TRACEPOINT("trace:tracepoint"),;<a name="line.93"></a> |
| <span class="sourceLineNo">094</span><a name="line.94"></a> |
| <span class="sourceLineNo">095</span> private final String internalName;<a name="line.95"></a> |
| <span class="sourceLineNo">096</span><a name="line.96"></a> |
| <span class="sourceLineNo">097</span> Event(final String internalName) {<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> this.internalName = internalName;<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> }<a name="line.99"></a> |
| <span class="sourceLineNo">100</span><a name="line.100"></a> |
| <span class="sourceLineNo">101</span> public String getInternalName() {<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> return internalName;<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> }<a name="line.103"></a> |
| <span class="sourceLineNo">104</span><a name="line.104"></a> |
| <span class="sourceLineNo">105</span> public static Event fromInternalName(final String name) {<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> for (Event event : values()) {<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> if (event.getInternalName().equalsIgnoreCase(name)) {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> return event;<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> }<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> }<a name="line.110"></a> |
| <span class="sourceLineNo">111</span><a name="line.111"></a> |
| <span class="sourceLineNo">112</span> return null;<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> }<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> }<a name="line.114"></a> |
| <span class="sourceLineNo">115</span><a name="line.115"></a> |
| <span class="sourceLineNo">116</span> enum Output {<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> SUMMARY,<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> TRACES,<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> FLAT,<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> COLLAPSED,<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> // No SVG in 2.x asyncprofiler.<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> SVG,<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> TREE,<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> JFR,<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> // In 2.x asyncprofiler, this is how you get flamegraphs.<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> HTML<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> }<a name="line.127"></a> |
| <span class="sourceLineNo">128</span><a name="line.128"></a> |
| <span class="sourceLineNo">129</span> @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "SE_TRANSIENT_FIELD_NOT_RESTORED",<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> justification = "This class is never serialized nor restored.")<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> private transient Lock profilerLock = new ReentrantLock();<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> private transient volatile Process process;<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> private String asyncProfilerHome;<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> private Integer pid;<a name="line.134"></a> |
| <span class="sourceLineNo">135</span><a name="line.135"></a> |
| <span class="sourceLineNo">136</span> public ProfileServlet() {<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> this.asyncProfilerHome = getAsyncProfilerHome();<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> this.pid = ProcessUtils.getPid();<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> LOG.info("Servlet process PID: " + pid + " asyncProfilerHome: " + asyncProfilerHome);<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> }<a name="line.140"></a> |
| <span class="sourceLineNo">141</span><a name="line.141"></a> |
| <span class="sourceLineNo">142</span> @Override<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> protected void doGet(final HttpServletRequest req, final HttpServletResponse resp)<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> throws IOException {<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> if (!HttpServer.isInstrumentationAccessAllowed(getServletContext(), req, resp)) {<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> resp.setStatus(HttpServletResponse.SC_UNAUTHORIZED);<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> setResponseHeader(resp);<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> resp.getWriter().write("Unauthorized: Instrumentation access is not allowed!");<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> return;<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> }<a name="line.150"></a> |
| <span class="sourceLineNo">151</span><a name="line.151"></a> |
| <span class="sourceLineNo">152</span> // make sure async profiler home is set<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> if (asyncProfilerHome == null || asyncProfilerHome.trim().isEmpty()) {<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> setResponseHeader(resp);<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> resp.getWriter()<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> .write("ASYNC_PROFILER_HOME env is not set.\n\n"<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> + "Please ensure the prerequsites for the Profiler Servlet have been installed and the\n"<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> + "environment is properly configured. For more information please see\n"<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> + "http://hbase.apache.org/book.html#profiler\n");<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> return;<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> }<a name="line.162"></a> |
| <span class="sourceLineNo">163</span><a name="line.163"></a> |
| <span class="sourceLineNo">164</span> // if pid is explicitly specified, use it else default to current process<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> pid = getInteger(req, "pid", pid);<a name="line.165"></a> |
| <span class="sourceLineNo">166</span><a name="line.166"></a> |
| <span class="sourceLineNo">167</span> // if pid is not specified in query param and if current process pid cannot be determined<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> if (pid == null) {<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> setResponseHeader(resp);<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> resp.getWriter()<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> .write("'pid' query parameter unspecified or unable to determine PID of current process.");<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> return;<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> }<a name="line.174"></a> |
| <span class="sourceLineNo">175</span><a name="line.175"></a> |
| <span class="sourceLineNo">176</span> final int duration = getInteger(req, "duration", DEFAULT_DURATION_SECONDS);<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> final Output output = getOutput(req);<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> final Event event = getEvent(req);<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> final Long interval = getLong(req, "interval");<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> final Integer jstackDepth = getInteger(req, "jstackdepth", null);<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> final Long bufsize = getLong(req, "bufsize");<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> final boolean thread = req.getParameterMap().containsKey("thread");<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> final boolean simple = req.getParameterMap().containsKey("simple");<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> final Integer width = getInteger(req, "width", null);<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> final Integer height = getInteger(req, "height", null);<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> final Double minwidth = getMinWidth(req);<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> final boolean reverse = req.getParameterMap().containsKey("reverse");<a name="line.187"></a> |
| <span class="sourceLineNo">188</span><a name="line.188"></a> |
| <span class="sourceLineNo">189</span> if (process == null || !process.isAlive()) {<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> try {<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> int lockTimeoutSecs = 3;<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> if (profilerLock.tryLock(lockTimeoutSecs, TimeUnit.SECONDS)) {<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> try {<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> File outputFile =<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> new File(OUTPUT_DIR, "async-prof-pid-" + pid + "-" + event.name().toLowerCase() + "-"<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> + ID_GEN.incrementAndGet() + "." + output.name().toLowerCase());<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> List<String> cmd = new ArrayList<>();<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> cmd.add(asyncProfilerHome + PROFILER_SCRIPT);<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> cmd.add("-e");<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> cmd.add(event.getInternalName());<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> cmd.add("-d");<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> cmd.add("" + duration);<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> cmd.add("-o");<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> cmd.add(output.name().toLowerCase());<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> cmd.add("-f");<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> cmd.add(outputFile.getAbsolutePath());<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> if (interval != null) {<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> cmd.add("-i");<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> cmd.add(interval.toString());<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> }<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> if (jstackDepth != null) {<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> cmd.add("-j");<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> cmd.add(jstackDepth.toString());<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> }<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> if (bufsize != null) {<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> cmd.add("-b");<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> cmd.add(bufsize.toString());<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> }<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> if (thread) {<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> cmd.add("-t");<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> }<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> if (simple) {<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> cmd.add("-s");<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> }<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> if (width != null) {<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> cmd.add("--width");<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> cmd.add(width.toString());<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> }<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> if (height != null) {<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> cmd.add("--height");<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> cmd.add(height.toString());<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> }<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> if (minwidth != null) {<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> cmd.add("--minwidth");<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> cmd.add(minwidth.toString());<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> }<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> if (reverse) {<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> cmd.add("--reverse");<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> }<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> cmd.add(pid.toString());<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> process = ProcessUtils.runCmdAsync(cmd);<a name="line.241"></a> |
| <span class="sourceLineNo">242</span><a name="line.242"></a> |
| <span class="sourceLineNo">243</span> // set response and set refresh header to output location<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> setResponseHeader(resp);<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> resp.setStatus(HttpServletResponse.SC_ACCEPTED);<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> String relativeUrl = "/prof-output-hbase/" + outputFile.getName();<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> resp.getWriter()<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> .write("Started [" + event.getInternalName()<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> + "] profiling. This page will automatically redirect to " + relativeUrl + " after "<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> + duration + " seconds. "<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> + "If empty diagram and Linux 4.6+, see 'Basic Usage' section on the Async "<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> + "Profiler Home Page, https://github.com/jvm-profiling-tools/async-profiler."<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> + "\n\nCommand:\n" + Joiner.on(" ").join(cmd));<a name="line.253"></a> |
| <span class="sourceLineNo">254</span><a name="line.254"></a> |
| <span class="sourceLineNo">255</span> // to avoid auto-refresh by ProfileOutputServlet, refreshDelay can be specified<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> // via url param<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> int refreshDelay = getInteger(req, "refreshDelay", 0);<a name="line.257"></a> |
| <span class="sourceLineNo">258</span><a name="line.258"></a> |
| <span class="sourceLineNo">259</span> // instead of sending redirect, set auto-refresh so that browsers will refresh<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> // with redirected url<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> resp.setHeader("Refresh", (duration + refreshDelay) + ";" + relativeUrl);<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> resp.getWriter().flush();<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> } finally {<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> profilerLock.unlock();<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> }<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> } else {<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> setResponseHeader(resp);<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> resp.getWriter()<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> .write("Unable to acquire lock. Another instance of profiler might be running.");<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> LOG.warn("Unable to acquire lock in " + lockTimeoutSecs<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> + " seconds. Another instance of profiler might be running.");<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> }<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> } catch (InterruptedException e) {<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> LOG.warn("Interrupted while acquiring profile lock.", e);<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> }<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> } else {<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> setResponseHeader(resp);<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> resp.getWriter().write("Another instance of profiler is already running.");<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> }<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> }<a name="line.283"></a> |
| <span class="sourceLineNo">284</span><a name="line.284"></a> |
| <span class="sourceLineNo">285</span> private Integer getInteger(final HttpServletRequest req, final String param,<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> final Integer defaultValue) {<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> final String value = req.getParameter(param);<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> if (value != null) {<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> try {<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> return Integer.valueOf(value);<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> } catch (NumberFormatException e) {<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> return defaultValue;<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> }<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> }<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> return defaultValue;<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> }<a name="line.296"></a> |
| <span class="sourceLineNo">297</span><a name="line.297"></a> |
| <span class="sourceLineNo">298</span> private Long getLong(final HttpServletRequest req, final String param) {<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> final String value = req.getParameter(param);<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> if (value != null) {<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> try {<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> return Long.valueOf(value);<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> } catch (NumberFormatException e) {<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> return null;<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> }<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> }<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> return null;<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> }<a name="line.308"></a> |
| <span class="sourceLineNo">309</span><a name="line.309"></a> |
| <span class="sourceLineNo">310</span> private Double getMinWidth(final HttpServletRequest req) {<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> final String value = req.getParameter("minwidth");<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> if (value != null) {<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> try {<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> return Double.valueOf(value);<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> } catch (NumberFormatException e) {<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> return null;<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> }<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> }<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> return null;<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> }<a name="line.320"></a> |
| <span class="sourceLineNo">321</span><a name="line.321"></a> |
| <span class="sourceLineNo">322</span> private Event getEvent(final HttpServletRequest req) {<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> final String eventArg = req.getParameter("event");<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> if (eventArg != null) {<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> Event event = Event.fromInternalName(eventArg);<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> return event == null ? Event.CPU : event;<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> }<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> return Event.CPU;<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> }<a name="line.329"></a> |
| <span class="sourceLineNo">330</span><a name="line.330"></a> |
| <span class="sourceLineNo">331</span> private Output getOutput(final HttpServletRequest req) {<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> final String outputArg = req.getParameter("output");<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> if (req.getParameter("output") != null) {<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> try {<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> return Output.valueOf(outputArg.trim().toUpperCase());<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> } catch (IllegalArgumentException e) {<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> return Output.HTML;<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> }<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> }<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> return Output.HTML;<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> }<a name="line.341"></a> |
| <span class="sourceLineNo">342</span><a name="line.342"></a> |
| <span class="sourceLineNo">343</span> static void setResponseHeader(final HttpServletResponse response) {<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> response.setHeader(ACCESS_CONTROL_ALLOW_METHODS, ALLOWED_METHODS);<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> response.setHeader(ACCESS_CONTROL_ALLOW_ORIGIN, "*");<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> response.setContentType(CONTENT_TYPE_TEXT);<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> }<a name="line.347"></a> |
| <span class="sourceLineNo">348</span><a name="line.348"></a> |
| <span class="sourceLineNo">349</span> static String getAsyncProfilerHome() {<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> String asyncProfilerHome = System.getenv(ASYNC_PROFILER_HOME_ENV);<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> // if ENV is not set, see if -Dasync.profiler.home=/path/to/async/profiler/home is set<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> if (asyncProfilerHome == null || asyncProfilerHome.trim().isEmpty()) {<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> asyncProfilerHome = System.getProperty(ASYNC_PROFILER_HOME_SYSTEM_PROPERTY);<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> }<a name="line.354"></a> |
| <span class="sourceLineNo">355</span><a name="line.355"></a> |
| <span class="sourceLineNo">356</span> return asyncProfilerHome;<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> }<a name="line.357"></a> |
| <span class="sourceLineNo">358</span><a name="line.358"></a> |
| <span class="sourceLineNo">359</span> public static class DisabledServlet extends HttpServlet {<a name="line.359"></a> |
| <span class="sourceLineNo">360</span><a name="line.360"></a> |
| <span class="sourceLineNo">361</span> private static final long serialVersionUID = 1L;<a name="line.361"></a> |
| <span class="sourceLineNo">362</span><a name="line.362"></a> |
| <span class="sourceLineNo">363</span> @Override<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> protected void doGet(final HttpServletRequest req, final HttpServletResponse resp)<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> throws IOException {<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> setResponseHeader(resp);<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> resp.getWriter()<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> .write("The profiler servlet was disabled at startup.\n\n"<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> + "Please ensure the prerequisites for the Profiler Servlet have been installed and the\n"<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> + "environment is properly configured. For more information please see\n"<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> + "http://hbase.apache.org/book.html#profiler\n");<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> return;<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> }<a name="line.374"></a> |
| <span class="sourceLineNo">375</span><a name="line.375"></a> |
| <span class="sourceLineNo">376</span> }<a name="line.376"></a> |
| <span class="sourceLineNo">377</span><a name="line.377"></a> |
| <span class="sourceLineNo">378</span>}<a name="line.378"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
