/*
* Druid - a distributed column store.
* Copyright (C) 2012, 2013 Metamarkets Group Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package io.druid.segment;
import com.google.common.base.Stopwatch;
import com.google.common.collect.Maps;
import com.metamx.common.ISE;
import com.metamx.common.logger.Logger;
import java.util.Map;
import java.util.concurrent.TimeUnit;
/**
*/
public class LoggingProgressIndicator extends BaseProgressIndicator
{
private static Logger log = new Logger(LoggingProgressIndicator.class);
private final String progressName;
private final Stopwatch global;
private final Map<String, Stopwatch> sections = Maps.newHashMap();
public LoggingProgressIndicator(String progressName)
{
this.progressName = progressName;
this.global = Stopwatch.createUnstarted();
}
@Override
public void start()
{
log.info("Starting [%s]", progressName);
global.start();
}
@Override
public void stop()
{
long time = global.elapsed(TimeUnit.MILLISECONDS);
global.stop();
log.info("[%s] complete. Elapsed time: [%,d] millis", progressName, time);
}
@Override
public void startSection(String section)
{
log.info("[%s]: Starting [%s]", progressName, section);
Stopwatch sectionWatch = sections.get(section);
if (sectionWatch != null) {
throw new ISE("[%s]: Cannot start progress tracker for [%s]. It is already started.", progressName, section);
}
sectionWatch = Stopwatch.createStarted();
sections.put(section, sectionWatch);
}
@Override
public void progressSection(String section, String message)
{
Stopwatch sectionWatch = sections.get(section);
if (sectionWatch == null) {
throw new ISE("[%s]: Cannot progress tracker for [%s]. Nothing started.", progressName, section);
}
long time = sectionWatch.elapsed(TimeUnit.MILLISECONDS);
log.info("[%s]: [%s] : %s. Elapsed time: [%,d] millis", progressName, section, message, time);
}
@Override
public void stopSection(String section)
{
Stopwatch sectionWatch = sections.remove(section);
if (sectionWatch == null) {
throw new ISE("[%s]: Cannot stop progress tracker for [%s]. Nothing started.", progressName, section);
}
long time = sectionWatch.elapsed(TimeUnit.MILLISECONDS);
sectionWatch.stop();
log.info("[%s]: [%s] has completed. Elapsed time: [%,d] millis", progressName, section, time);
}
}