| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.activemq.tool.sampler; |
| |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import org.apache.activemq.tool.properties.AbstractObjectProperties; |
| import org.apache.activemq.tool.reports.PerformanceReportWriter; |
| |
| public abstract class AbstractPerformanceSampler extends AbstractObjectProperties implements PerformanceSampler { |
| |
| protected long rampUpTime = 30 * 1000; // 30 secs |
| protected long rampDownTime = 30 * 1000; // 30 secs |
| protected long duration = 5 * 60 * 1000; // 5 mins |
| protected long interval = 1000; // 1 sec |
| protected PerformanceReportWriter perfReportWriter; |
| protected PerformanceEventListener perfEventListener; |
| protected final AtomicBoolean isRunning = new AtomicBoolean(false); |
| protected long sampleIndex; |
| |
| public long getRampUpTime() { |
| return rampUpTime; |
| } |
| |
| public void setRampUpTime(long rampUpTime) { |
| this.rampUpTime = rampUpTime; |
| } |
| |
| public long getRampDownTime() { |
| return rampDownTime; |
| } |
| |
| public void setRampDownTime(long rampDownTime) { |
| this.rampDownTime = rampDownTime; |
| } |
| |
| public long getDuration() { |
| return duration; |
| } |
| |
| public void setDuration(long duration) { |
| this.duration = duration; |
| } |
| |
| public long getInterval() { |
| return interval; |
| } |
| |
| public void setInterval(long interval) { |
| this.interval = interval; |
| } |
| |
| public PerformanceReportWriter getPerfReportWriter() { |
| return perfReportWriter; |
| } |
| |
| public void setPerfReportWriter(PerformanceReportWriter perfReportWriter) { |
| this.perfReportWriter = perfReportWriter; |
| } |
| |
| public PerformanceEventListener getPerfEventListener() { |
| return perfEventListener; |
| } |
| |
| public void setPerfEventListener(PerformanceEventListener perfEventListener) { |
| this.perfEventListener = perfEventListener; |
| } |
| |
| public void startSampler() { |
| isRunning.set(true); |
| Thread t = new Thread(this); |
| t.start(); |
| } |
| |
| public void run() { |
| try { |
| onRampUpStart(); |
| if (perfEventListener != null) { |
| perfEventListener.onRampUpStart(this); |
| } |
| |
| try { |
| Thread.sleep(rampUpTime); |
| } catch (InterruptedException e) { |
| e.printStackTrace(); |
| } |
| |
| onSamplerStart(); |
| if (perfEventListener != null) { |
| perfEventListener.onSamplerStart(this); |
| } |
| |
| sample(); |
| |
| onSamplerEnd(); |
| if (perfEventListener != null) { |
| perfEventListener.onSamplerEnd(this); |
| } |
| |
| try { |
| Thread.sleep(rampDownTime); |
| } catch (InterruptedException e) { |
| e.printStackTrace(); |
| } |
| |
| onRampDownEnd(); |
| if (perfEventListener != null) { |
| perfEventListener.onRampDownEnd(this); |
| } |
| } finally { |
| isRunning.set(false); |
| synchronized (isRunning) { |
| isRunning.notifyAll(); |
| } |
| } |
| } |
| |
| protected void sample() { |
| // Compute for the actual duration window of the sampler |
| long endTime = System.currentTimeMillis() + duration - rampDownTime - rampUpTime; |
| |
| while (System.currentTimeMillis() < endTime) { |
| try { |
| Thread.sleep(interval); |
| } catch (InterruptedException e) { |
| e.printStackTrace(); |
| } |
| sampleData(); |
| sampleIndex++; |
| } |
| } |
| |
| public abstract void sampleData(); |
| |
| public boolean isRunning() { |
| return isRunning.get(); |
| } |
| |
| public void waitUntilDone() { |
| while (isRunning()) { |
| try { |
| synchronized (isRunning) { |
| isRunning.wait(0); |
| } |
| } catch (InterruptedException e) { |
| e.printStackTrace(); |
| } |
| } |
| } |
| |
| // Call back functions to customize behavior of thread. |
| protected void onRampUpStart() { |
| } |
| |
| protected void onSamplerStart() { |
| } |
| |
| protected void onSamplerEnd() { |
| } |
| |
| protected void onRampDownEnd() { |
| } |
| } |