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| <pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> *<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * or more contributor license agreements. See the NOTICE file<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * distributed with this work for additional information<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * regarding copyright ownership. The ASF licenses this file<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * to you under the Apache License, Version 2.0 (the<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * "License"); you may not use this file except in compliance<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> * with the License. You may obtain a copy of the License at<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> *<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> *<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * Unless required by applicable law or agreed to in writing, software<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * See the License for the specific language governing permissions and<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * limitations under the License.<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> */<a name="line.18"></a> |
| <span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.executor;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span><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.io.Writer;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.lang.management.ThreadInfo;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.List;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.Map;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.Map.Entry;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.concurrent.BlockingQueue;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.concurrent.ConcurrentMap;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.concurrent.Executors;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.concurrent.LinkedBlockingQueue;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import java.util.concurrent.ThreadPoolExecutor;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import java.util.concurrent.TimeUnit;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import java.util.concurrent.atomic.AtomicLong;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span><a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.monitoring.ThreadMonitoring;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.slf4j.Logger;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.slf4j.LoggerFactory;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span><a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hbase.thirdparty.com.google.common.collect.Lists;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hbase.thirdparty.com.google.common.collect.Maps;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hbase.thirdparty.com.google.common.util.concurrent.ListenableFuture;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hbase.thirdparty.com.google.common.util.concurrent.ListeningScheduledExecutorService;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.hbase.thirdparty.com.google.common.util.concurrent.MoreExecutors;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.apache.hbase.thirdparty.com.google.common.util.concurrent.ThreadFactoryBuilder;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span><a name="line.48"></a> |
| <span class="sourceLineNo">049</span>/**<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * This is a generic executor service. This component abstracts a<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * threadpool, a queue to which {@link EventType}s can be submitted,<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * and a <code>Runnable</code> that handles the object that is added to the queue.<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> *<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> * <p>In order to create a new service, create an instance of this class and<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * then do: <code>instance.startExecutorService("myService");</code>. When done<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * call {@link #shutdown()}.<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> *<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * <p>In order to use the service created above, call<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * {@link #submit(EventHandler)}.<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> */<a name="line.60"></a> |
| <span class="sourceLineNo">061</span>@InterfaceAudience.Private<a name="line.61"></a> |
| <span class="sourceLineNo">062</span>public class ExecutorService {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> private static final Logger LOG = LoggerFactory.getLogger(ExecutorService.class);<a name="line.63"></a> |
| <span class="sourceLineNo">064</span><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> // hold the all the executors created in a map addressable by their names<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> private final ConcurrentMap<String, Executor> executorMap = new ConcurrentHashMap<>();<a name="line.66"></a> |
| <span class="sourceLineNo">067</span><a name="line.67"></a> |
| <span class="sourceLineNo">068</span> // Name of the server hosting this executor service.<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> private final String servername;<a name="line.69"></a> |
| <span class="sourceLineNo">070</span><a name="line.70"></a> |
| <span class="sourceLineNo">071</span> private final ListeningScheduledExecutorService delayedSubmitTimer =<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> MoreExecutors.listeningDecorator(Executors.newScheduledThreadPool(1, new ThreadFactoryBuilder()<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> .setDaemon(true).setNameFormat("Event-Executor-Delay-Submit-Timer").build()));<a name="line.73"></a> |
| <span class="sourceLineNo">074</span><a name="line.74"></a> |
| <span class="sourceLineNo">075</span> /**<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> * Default constructor.<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> * @param servername Name of the hosting server.<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> */<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> public ExecutorService(final String servername) {<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> this.servername = servername;<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> }<a name="line.81"></a> |
| <span class="sourceLineNo">082</span><a name="line.82"></a> |
| <span class="sourceLineNo">083</span> /**<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> * Start an executor service with a given name. If there was a service already<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> * started with the same name, this throws a RuntimeException.<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> * @param name Name of the service to start.<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> */<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> @VisibleForTesting<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> public void startExecutorService(String name, int maxThreads) {<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> Executor hbes = this.executorMap.compute(name, (key, value) -> {<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> if (value != null) {<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> throw new RuntimeException("An executor service with the name " + key +<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> " is already running!");<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> }<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> return new Executor(key, maxThreads);<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> });<a name="line.96"></a> |
| <span class="sourceLineNo">097</span><a name="line.97"></a> |
| <span class="sourceLineNo">098</span> LOG.debug(<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> "Starting executor service name={}, corePoolSize={}, maxPoolSize={}",<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> name, hbes.threadPoolExecutor.getCorePoolSize(),<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> hbes.threadPoolExecutor.getMaximumPoolSize());<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> }<a name="line.102"></a> |
| <span class="sourceLineNo">103</span><a name="line.103"></a> |
| <span class="sourceLineNo">104</span> boolean isExecutorServiceRunning(String name) {<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> return this.executorMap.containsKey(name);<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> }<a name="line.106"></a> |
| <span class="sourceLineNo">107</span><a name="line.107"></a> |
| <span class="sourceLineNo">108</span> public void shutdown() {<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> this.delayedSubmitTimer.shutdownNow();<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> for(Entry<String, Executor> entry: this.executorMap.entrySet()) {<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> List<Runnable> wasRunning =<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> entry.getValue().threadPoolExecutor.shutdownNow();<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> if (!wasRunning.isEmpty()) {<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> LOG.info(entry.getValue() + " had " + wasRunning + " on shutdown");<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> }<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> }<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> this.executorMap.clear();<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> }<a name="line.118"></a> |
| <span class="sourceLineNo">119</span><a name="line.119"></a> |
| <span class="sourceLineNo">120</span> Executor getExecutor(final ExecutorType type) {<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> return getExecutor(type.getExecutorName(this.servername));<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> }<a name="line.122"></a> |
| <span class="sourceLineNo">123</span><a name="line.123"></a> |
| <span class="sourceLineNo">124</span> Executor getExecutor(String name) {<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> Executor executor = this.executorMap.get(name);<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> return executor;<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> @VisibleForTesting<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> public ThreadPoolExecutor getExecutorThreadPool(final ExecutorType type) {<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> return getExecutor(type).getThreadPoolExecutor();<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> }<a name="line.132"></a> |
| <span class="sourceLineNo">133</span><a name="line.133"></a> |
| <span class="sourceLineNo">134</span> public void startExecutorService(final ExecutorType type, final int maxThreads) {<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> String name = type.getExecutorName(this.servername);<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> if (isExecutorServiceRunning(name)) {<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> LOG.debug("Executor service {} already running on {}", this,<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> this.servername);<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> return;<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> }<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> startExecutorService(name, maxThreads);<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> }<a name="line.142"></a> |
| <span class="sourceLineNo">143</span><a name="line.143"></a> |
| <span class="sourceLineNo">144</span> /**<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> * Initialize the executor lazily, Note if an executor need to be initialized lazily, then all<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> * paths should use this method to get the executor, should not start executor by using<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> * {@link ExecutorService#startExecutorService(ExecutorType, int)}<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> */<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> public ThreadPoolExecutor getExecutorLazily(ExecutorType type, int maxThreads) {<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> String name = type.getExecutorName(this.servername);<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> return executorMap<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> .computeIfAbsent(name, (executorName) -> new Executor(executorName, maxThreads))<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> .getThreadPoolExecutor();<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> }<a name="line.154"></a> |
| <span class="sourceLineNo">155</span><a name="line.155"></a> |
| <span class="sourceLineNo">156</span> public void submit(final EventHandler eh) {<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> Executor executor = getExecutor(eh.getEventType().getExecutorServiceType());<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> if (executor == null) {<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> // This happens only when events are submitted after shutdown() was<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> // called, so dropping them should be "ok" since it means we're<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> // shutting down.<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> LOG.error("Cannot submit [" + eh + "] because the executor is missing." +<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> " Is this process shutting down?");<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> } else {<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> executor.submit(eh);<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> }<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> }<a name="line.167"></a> |
| <span class="sourceLineNo">168</span><a name="line.168"></a> |
| <span class="sourceLineNo">169</span> // Submit the handler after the given delay. Used for retrying.<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> public void delayedSubmit(EventHandler eh, long delay, TimeUnit unit) {<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> ListenableFuture<?> future = delayedSubmitTimer.schedule(() -> submit(eh), delay, unit);<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> future.addListener(() -> {<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> try {<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> future.get();<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> } catch (Exception e) {<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> LOG.error("Failed to submit the event handler {} to executor", eh, e);<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> }<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> }, MoreExecutors.directExecutor());<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> }<a name="line.179"></a> |
| <span class="sourceLineNo">180</span><a name="line.180"></a> |
| <span class="sourceLineNo">181</span> public Map<String, ExecutorStatus> getAllExecutorStatuses() {<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> Map<String, ExecutorStatus> ret = Maps.newHashMap();<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> for (Map.Entry<String, Executor> e : executorMap.entrySet()) {<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> ret.put(e.getKey(), e.getValue().getStatus());<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> }<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> return ret;<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> }<a name="line.187"></a> |
| <span class="sourceLineNo">188</span><a name="line.188"></a> |
| <span class="sourceLineNo">189</span> /**<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> * Executor instance.<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> */<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> static class Executor {<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> // how long to retain excess threads<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> static final long keepAliveTimeInMillis = 1000;<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> // the thread pool executor that services the requests<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> final TrackingThreadPoolExecutor threadPoolExecutor;<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> // work queue to use - unbounded queue<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> final BlockingQueue<Runnable> q = new LinkedBlockingQueue<>();<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> private final String name;<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> private static final AtomicLong seqids = new AtomicLong(0);<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> private final long id;<a name="line.201"></a> |
| <span class="sourceLineNo">202</span><a name="line.202"></a> |
| <span class="sourceLineNo">203</span> protected Executor(String name, int maxThreads) {<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> this.id = seqids.incrementAndGet();<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> this.name = name;<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> // create the thread pool executor<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> this.threadPoolExecutor = new TrackingThreadPoolExecutor(<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> maxThreads, maxThreads,<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> keepAliveTimeInMillis, TimeUnit.MILLISECONDS, q);<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> // name the threads for this threadpool<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> ThreadFactoryBuilder tfb = new ThreadFactoryBuilder();<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> tfb.setNameFormat(this.name + "-%d");<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> tfb.setDaemon(true);<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> this.threadPoolExecutor.setThreadFactory(tfb.build());<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> }<a name="line.215"></a> |
| <span class="sourceLineNo">216</span><a name="line.216"></a> |
| <span class="sourceLineNo">217</span> /**<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> * Submit the event to the queue for handling.<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> * @param event<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> */<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> void submit(final EventHandler event) {<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> // If there is a listener for this type, make sure we call the before<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> // and after process methods.<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> this.threadPoolExecutor.execute(event);<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> }<a name="line.225"></a> |
| <span class="sourceLineNo">226</span><a name="line.226"></a> |
| <span class="sourceLineNo">227</span> TrackingThreadPoolExecutor getThreadPoolExecutor() {<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> return threadPoolExecutor;<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> }<a name="line.229"></a> |
| <span class="sourceLineNo">230</span><a name="line.230"></a> |
| <span class="sourceLineNo">231</span> @Override<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> public String toString() {<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> return getClass().getSimpleName() + "-" + id + "-" + name;<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> }<a name="line.234"></a> |
| <span class="sourceLineNo">235</span><a name="line.235"></a> |
| <span class="sourceLineNo">236</span> public ExecutorStatus getStatus() {<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> List<EventHandler> queuedEvents = Lists.newArrayList();<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> for (Runnable r : q) {<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> if (!(r instanceof EventHandler)) {<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> LOG.warn("Non-EventHandler " + r + " queued in " + name);<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> continue;<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> }<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> queuedEvents.add((EventHandler)r);<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> }<a name="line.244"></a> |
| <span class="sourceLineNo">245</span><a name="line.245"></a> |
| <span class="sourceLineNo">246</span> List<RunningEventStatus> running = Lists.newArrayList();<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> for (Map.Entry<Thread, Runnable> e :<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> threadPoolExecutor.getRunningTasks().entrySet()) {<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> Runnable r = e.getValue();<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> if (!(r instanceof EventHandler)) {<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> LOG.warn("Non-EventHandler " + r + " running in " + name);<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> continue;<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> }<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> running.add(new RunningEventStatus(e.getKey(), (EventHandler)r));<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> }<a name="line.255"></a> |
| <span class="sourceLineNo">256</span><a name="line.256"></a> |
| <span class="sourceLineNo">257</span> return new ExecutorStatus(this, queuedEvents, running);<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> }<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> }<a name="line.259"></a> |
| <span class="sourceLineNo">260</span><a name="line.260"></a> |
| <span class="sourceLineNo">261</span> /**<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> * A subclass of ThreadPoolExecutor that keeps track of the Runnables that<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> * are executing at any given point in time.<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> */<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> static class TrackingThreadPoolExecutor extends ThreadPoolExecutor {<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> private ConcurrentMap<Thread, Runnable> running = Maps.newConcurrentMap();<a name="line.266"></a> |
| <span class="sourceLineNo">267</span><a name="line.267"></a> |
| <span class="sourceLineNo">268</span> public TrackingThreadPoolExecutor(int corePoolSize, int maximumPoolSize,<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> long keepAliveTime, TimeUnit unit, BlockingQueue<Runnable> workQueue) {<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue);<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> }<a name="line.271"></a> |
| <span class="sourceLineNo">272</span><a name="line.272"></a> |
| <span class="sourceLineNo">273</span> @Override<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> protected void afterExecute(Runnable r, Throwable t) {<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> super.afterExecute(r, t);<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> running.remove(Thread.currentThread());<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> }<a name="line.277"></a> |
| <span class="sourceLineNo">278</span><a name="line.278"></a> |
| <span class="sourceLineNo">279</span> @Override<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> protected void beforeExecute(Thread t, Runnable r) {<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> Runnable oldPut = running.put(t, r);<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> assert oldPut == null : "inconsistency for thread " + t;<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> super.beforeExecute(t, r);<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> }<a name="line.284"></a> |
| <span class="sourceLineNo">285</span><a name="line.285"></a> |
| <span class="sourceLineNo">286</span> /**<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> * @return a map of the threads currently running tasks<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> * inside this executor. Each key is an active thread,<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> * and the value is the task that is currently running.<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> * Note that this is not a stable snapshot of the map.<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> */<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> public ConcurrentMap<Thread, Runnable> getRunningTasks() {<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> return running;<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> }<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> }<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> * A snapshot of the status of a particular executor. This includes<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> * the contents of the executor's pending queue, as well as the<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> * threads and events currently being processed.<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> *<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> * This is a consistent snapshot that is immutable once constructed.<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> */<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> public static class ExecutorStatus {<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> final Executor executor;<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> final List<EventHandler> queuedEvents;<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> final List<RunningEventStatus> running;<a name="line.307"></a> |
| <span class="sourceLineNo">308</span><a name="line.308"></a> |
| <span class="sourceLineNo">309</span> ExecutorStatus(Executor executor,<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> List<EventHandler> queuedEvents,<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> List<RunningEventStatus> running) {<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> this.executor = executor;<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> this.queuedEvents = queuedEvents;<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> this.running = running;<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> }<a name="line.315"></a> |
| <span class="sourceLineNo">316</span><a name="line.316"></a> |
| <span class="sourceLineNo">317</span> public List<EventHandler> getQueuedEvents() {<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> return queuedEvents;<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> }<a name="line.319"></a> |
| <span class="sourceLineNo">320</span><a name="line.320"></a> |
| <span class="sourceLineNo">321</span> public List<RunningEventStatus> getRunning() {<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> return running;<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> }<a name="line.323"></a> |
| <span class="sourceLineNo">324</span><a name="line.324"></a> |
| <span class="sourceLineNo">325</span> /**<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> * Dump a textual representation of the executor's status<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> * to the given writer.<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> *<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> * @param out the stream to write to<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> * @param indent a string prefix for each line, used for indentation<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> */<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> public void dumpTo(Writer out, String indent) throws IOException {<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> out.write(indent + "Status for executor: " + executor + "\n");<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> out.write(indent + "=======================================\n");<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> out.write(indent + queuedEvents.size() + " events queued, " +<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> running.size() + " running\n");<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> if (!queuedEvents.isEmpty()) {<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> out.write(indent + "Queued:\n");<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> for (EventHandler e : queuedEvents) {<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> out.write(indent + " " + e + "\n");<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> }<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> out.write("\n");<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> }<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> if (!running.isEmpty()) {<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> out.write(indent + "Running:\n");<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> for (RunningEventStatus stat : running) {<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> out.write(indent + " Running on thread '" +<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> stat.threadInfo.getThreadName() +<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> "': " + stat.event + "\n");<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> out.write(ThreadMonitoring.formatThreadInfo(<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> stat.threadInfo, indent + " "));<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> out.write("\n");<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> }<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> }<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> out.flush();<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> }<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> /**<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> * The status of a particular event that is in the middle of being<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> * handled by an executor.<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> */<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> public static class RunningEventStatus {<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> final ThreadInfo threadInfo;<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> final EventHandler event;<a name="line.365"></a> |
| <span class="sourceLineNo">366</span><a name="line.366"></a> |
| <span class="sourceLineNo">367</span> public RunningEventStatus(Thread t, EventHandler event) {<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> this.threadInfo = ThreadMonitoring.getThreadInfo(t);<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> this.event = event;<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> }<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> }<a name="line.371"></a> |
| <span class="sourceLineNo">372</span>}<a name="line.372"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
