/**
* 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.fusesource.hawtdb.internal;
import java.util.ArrayList;
import java.util.List;
import org.fusesource.hawtdb.metric.MetricCounter;
import org.fusesource.hawtdb.metric.Period;
/**
*
* @author <a href="http://hiramchirino.com">Hiram Chirino</a>
*/
public class Benchmarker {
public static abstract class BenchmarkAction<A extends Actor> implements Action<A> {
public final MetricCounter success = new MetricCounter();
public final MetricCounter failed = new MetricCounter();
protected final String name;
public BenchmarkAction(String name) {
this.name = name;
success.setName(name+" success");
failed.setName(name+" failed");
}
public void init(A actor) {
}
final public void run(final A actor) throws Exception {
try {
execute(actor);
success.increment();
} catch (Throwable e) {
e.printStackTrace();
failed.increment();
}
}
abstract protected void execute(A actor) throws Exception;
public String getName() {
return name;
}
}
int samples = 3;
int period = 1000 * 5;
String name;
public void benchmark(ArrayList<? extends Actor> actors, ArrayList<? extends MetricCounter> metrics) throws Exception {
for (Actor actor : actors) {
actor.start();
}
try {
displayRates(metrics);
} finally {
for (Actor actor : actors) {
actor.stop();
}
for (Actor actor : actors) {
actor.waitForStop();
}
}
}
protected void displayRates(List<? extends MetricCounter> metrics) throws InterruptedException {
System.out.println("Gathering rates for: " + getName());
for (int i = 0; i < samples; i++) {
Period p = new Period();
Thread.sleep(period);
for (MetricCounter metric : metrics) {
System.out.println(metric.getRateSummary(p));
metric.reset();
}
}
}
public int getSamples() {
return samples;
}
public void setSamples(int samples) {
this.samples = samples;
}
public int getPeriod() {
return period;
}
public void setPeriod(int period) {
this.period = period;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}