001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.activemq.tool.sampler; 018 019 import java.io.IOException; 020 021 import org.apache.activemq.tool.reports.AbstractPerfReportWriter; 022 import org.apache.activemq.tool.sampler.plugins.CpuSamplerPlugin; 023 import org.apache.activemq.tool.sampler.plugins.LinuxCpuSamplerPlugin; 024 025 public class CpuSamplerTask extends AbstractPerformanceSampler { 026 027 private CpuSamplerPlugin plugin; 028 029 public void createPlugin() throws IOException { 030 createPlugin(System.getProperty("os.name")); 031 } 032 033 public void createPlugin(String osName) throws IOException { 034 if (osName == null) { 035 throw new IOException("No defined OS name found. Found: " + osName); 036 } 037 038 if (osName.equalsIgnoreCase(CpuSamplerPlugin.LINUX)) { 039 plugin = new LinuxCpuSamplerPlugin(getInterval()); 040 } else { 041 throw new IOException("No CPU Sampler Plugin found for OS: " + osName + ". CPU Sampler will not be started."); 042 } 043 } 044 045 public void sampleData() { 046 if (plugin != null && perfReportWriter != null) { 047 perfReportWriter.writeCsvData(AbstractPerfReportWriter.REPORT_PLUGIN_CPU, "index=" + sampleIndex + "," + plugin.getCpuUtilizationStats()); 048 } 049 } 050 051 protected void onRampUpStart() { 052 super.onRampUpStart(); 053 if (plugin != null) { 054 plugin.start(); 055 } 056 } 057 058 protected void onRampDownEnd() { 059 super.onRampDownEnd(); 060 if (plugin != null) { 061 plugin.stop(); 062 } 063 } 064 }