001/* 002 * Copyright 2012 Anyware Services 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016package org.ametys.runtime.plugins.admin.jvmstatus.monitoring.sample; 017 018import java.awt.Color; 019import java.io.IOException; 020import java.lang.management.ManagementFactory; 021import java.lang.management.ThreadMXBean; 022import java.util.HashMap; 023import java.util.Map; 024 025import org.rrd4j.ConsolFun; 026import org.rrd4j.DsType; 027import org.rrd4j.core.RrdDef; 028import org.rrd4j.core.Sample; 029import org.rrd4j.graph.RrdGraphDef; 030 031import org.ametys.runtime.plugins.admin.jvmstatus.monitoring.SampleManager; 032 033/** 034 * {@link SampleManager} for collecting the number of live threads. 035 */ 036public class ThreadSampleManager extends AbstractSampleManager 037{ 038 @Override 039 protected void _configureDatasources(RrdDef rrdDef) 040 { 041 _registerDatasources(rrdDef, "daemon", DsType.GAUGE, 0, Double.NaN); 042 _registerDatasources(rrdDef, "total", DsType.GAUGE, 0, Double.NaN); 043 } 044 045 @Override 046 protected Map<String, Object> _internalCollect(Sample sample) throws IOException 047 { 048 Map<String, Object> result = new HashMap<>(); 049 ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean(); 050 051 int daemon = threadMXBean.getDaemonThreadCount(); 052 sample.setValue("daemon", daemon); 053 result.put("daemon", daemon); 054 055 int total = threadMXBean.getThreadCount(); 056 sample.setValue("total", total); 057 result.put("total", total); 058 059 return result; 060 } 061 062 @Override 063 protected String _getGraphTitle() 064 { 065 return "Live thread"; 066 } 067 068 @Override 069 protected void _populateGraphDefinition(RrdGraphDef graphDef, String rrdFilePath) 070 { 071 graphDef.datasource("daemon", rrdFilePath, "daemon", ConsolFun.AVERAGE); 072 graphDef.datasource("total", rrdFilePath, "total", ConsolFun.AVERAGE); 073 // User thread are not daemon thread ;) 074 graphDef.datasource("user", "total,daemon,-"); 075 076 077 graphDef.area("total", new Color(229, 229, 229), "Total thread count"); 078 graphDef.line("daemon", new Color(28, 76, 128), "Daemon thread count", 2); 079 graphDef.line("user", new Color(148, 30, 109), "User thread count", 2); 080 081 graphDef.gprint("user", ConsolFun.LAST, "Cur user: %.0f"); 082 graphDef.gprint("user", ConsolFun.MAX, "Max user: %.0f"); 083 graphDef.gprint("daemon", ConsolFun.LAST, "Cur daemon: %.0f"); 084 graphDef.gprint("daemon", ConsolFun.MAX, "Max daemon: %.0f"); 085 graphDef.gprint("total", ConsolFun.LAST, "Cur total: %.0f"); 086 graphDef.gprint("total", ConsolFun.MAX, "Max total: %.0f"); 087 088 // Do not scale units 089 graphDef.setUnitsExponent(0); 090 graphDef.setVerticalLabel("thread count"); 091 } 092}