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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.metrics2.lib;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import org.apache.hadoop.hbase.metrics.Interns;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import org.apache.hadoop.hbase.metrics.Snapshot;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.hadoop.metrics2.MetricHistogram;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.hadoop.metrics2.MetricsInfo;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.metrics2.MetricsRecordBuilder;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span><a name="line.26"></a> |
| <span class="sourceLineNo">027</span>/**<a name="line.27"></a> |
| <span class="sourceLineNo">028</span> * Extended histogram implementation with metric range counters.<a name="line.28"></a> |
| <span class="sourceLineNo">029</span> */<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>@InterfaceAudience.Private<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>public abstract class MutableRangeHistogram extends MutableHistogram implements MetricHistogram {<a name="line.31"></a> |
| <span class="sourceLineNo">032</span><a name="line.32"></a> |
| <span class="sourceLineNo">033</span> public MutableRangeHistogram(MetricsInfo info) {<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> this(info.name(), info.description());<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> }<a name="line.35"></a> |
| <span class="sourceLineNo">036</span><a name="line.36"></a> |
| <span class="sourceLineNo">037</span> public MutableRangeHistogram(String name, String description) {<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> super(name, description);<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> }<a name="line.39"></a> |
| <span class="sourceLineNo">040</span><a name="line.40"></a> |
| <span class="sourceLineNo">041</span> /**<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * Returns the type of range histogram size or time<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> */<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> public abstract String getRangeType();<a name="line.44"></a> |
| <span class="sourceLineNo">045</span><a name="line.45"></a> |
| <span class="sourceLineNo">046</span> /**<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * Returns the ranges to be counted<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> */<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> public abstract long[] getRanges();<a name="line.49"></a> |
| <span class="sourceLineNo">050</span><a name="line.50"></a> |
| <span class="sourceLineNo">051</span> @Override<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> public synchronized void snapshot(MetricsRecordBuilder metricsRecordBuilder, boolean all) {<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> // Get a reference to the old histogram.<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> Snapshot snapshot = histogram.snapshot();<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> if (snapshot != null) {<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> updateSnapshotMetrics(name, desc, histogram, snapshot, metricsRecordBuilder);<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> updateSnapshotRangeMetrics(metricsRecordBuilder, snapshot);<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> }<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> }<a name="line.59"></a> |
| <span class="sourceLineNo">060</span><a name="line.60"></a> |
| <span class="sourceLineNo">061</span> public void updateSnapshotRangeMetrics(MetricsRecordBuilder metricsRecordBuilder,<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> Snapshot snapshot) {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> long priorRange = 0;<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> long cumNum = 0;<a name="line.64"></a> |
| <span class="sourceLineNo">065</span><a name="line.65"></a> |
| <span class="sourceLineNo">066</span> final long[] ranges = getRanges();<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> final String rangeType = getRangeType();<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> for (int i = 0; i < ranges.length; i++) {<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> long val = snapshot.getCountAtOrBelow(ranges[i]);<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> if (val - cumNum > 0) {<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> metricsRecordBuilder.addCounter(<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> Interns.info(name + "_" + rangeType + "_" + priorRange + "-" + ranges[i], desc),<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> val - cumNum);<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> }<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> priorRange = ranges[i];<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> cumNum = val;<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> }<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> long val = snapshot.getCount();<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> if (val - cumNum > 0) {<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> metricsRecordBuilder.addCounter(<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> Interns.info(name + "_" + rangeType + "_" + priorRange + "-inf", desc), val - cumNum);<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><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> @Override<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> public long getCount() {<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> return histogram.getCount();<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> }<a name="line.88"></a> |
| <span class="sourceLineNo">089</span>}<a name="line.89"></a> |
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