/*
* Copyright 2013 Peter Lawrey
*
* Licensed 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 com.higherfrequencytrading.chronicle.impl;
import com.higherfrequencytrading.chronicle.Excerpt;
import org.jetbrains.annotations.NotNull;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.logging.*;
import static com.higherfrequencytrading.chronicle.impl.GlobalSettings.USE_UNSAFE;
import static com.higherfrequencytrading.chronicle.impl.GlobalSettings.deleteOnExit;
/**
* To log 2,000,000 messages took 0.416 seconds using Chronicle and 15.507 seconds using Logger
*/
public class FileLoggingMain {
public static void main(String... args) throws IOException {
int count = 2 * 1000 * 1000;
long time1 = timeLogToChronicle(count);
long time2 = timeLogToLogger(count);
System.out.printf("To log %,d messages took %.3f seconds using Chronicle and %.3f seconds using Logger%n", count, time1 / 1e9, time2 / 1e9);
}
private static long timeLogToChronicle(int count) throws IOException {
long start = System.nanoTime();
final String basePath = System.getProperty("java.io.tmpdir", "/tmp") + "/my.logger.log";
deleteOnExit(basePath);
IntIndexedChronicle tsc = new IntIndexedChronicle(basePath);
tsc.useUnsafe(USE_UNSAFE);
Excerpt excerpt = tsc.createExcerpt();
double d = 0.001, factor = 1 + 10.0 / count;
long timeInMS = System.currentTimeMillis() % 86400000;
for (int i = 0; i < count; i++) {
d *= factor;
excerpt.startExcerpt(128);
excerpt.appendTime(timeInMS).append(" [ ");
excerpt.append(Thread.currentThread().getName()).append(" ] FINE ");
excerpt.append("result= ").append(d, 6).append('\n');
excerpt.finish();
}
tsc.close();
return System.nanoTime() - start;
}
private static final SimpleDateFormat TIME = new SimpleDateFormat("HH:mm:ss.SSS");
private static long timeLogToLogger(int count) throws IOException {
long start = System.nanoTime();
FileHandler handler = new FileHandler("my.logger.log");
handler.setFormatter(new Formatter() {
@NotNull
@Override
public String format(@NotNull LogRecord record) {
return TIME.format(record.getMillis()) + " [ " + Thread.currentThread().getName() + " ] "
+ record.getLevel() + " " + record.getMessage() + "\n";
}
});
// Add to the desired logger
Logger logger = Logger.getLogger("com.higherfrequencytrading.chronicle");
logger.addHandler(handler);
logger.setLevel(Level.FINE);
double d = 0.001, factor = 1 + 10.0 / count;
for (int i = 0; i < count; i++) {
d *= factor;
logger.log(Level.FINE, "result= " + d);
}
handler.close();
return System.nanoTime() - start;
}
}