org.graylog2.indexer.ranges.RebuildIndexRangesJob Maven / Gradle / Ivy
/**
* This file is part of Graylog.
*
* Graylog 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 3 of the License, or
* (at your option) any later version.
*
* Graylog 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 Graylog. If not, see .
*/
package org.graylog2.indexer.ranges;
import com.google.common.base.Stopwatch;
import com.google.inject.assistedinject.Assisted;
import com.google.inject.assistedinject.AssistedInject;
import org.graylog2.indexer.Deflector;
import org.graylog2.shared.system.activities.Activity;
import org.graylog2.shared.system.activities.ActivityWriter;
import org.graylog2.system.jobs.SystemJob;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.concurrent.TimeUnit;
public class RebuildIndexRangesJob extends SystemJob {
public interface Factory {
RebuildIndexRangesJob create(Deflector deflector);
}
private static final Logger LOG = LoggerFactory.getLogger(RebuildIndexRangesJob.class);
private static final int MAX_CONCURRENCY = 1;
private volatile boolean cancelRequested = false;
private volatile int indicesToCalculate = 0;
private volatile int indicesCalculated = 0;
protected final Deflector deflector;
private final ActivityWriter activityWriter;
protected final IndexRangeService indexRangeService;
@AssistedInject
public RebuildIndexRangesJob(@Assisted Deflector deflector,
ActivityWriter activityWriter,
IndexRangeService indexRangeService) {
this.deflector = deflector;
this.activityWriter = activityWriter;
this.indexRangeService = indexRangeService;
}
@Override
public void requestCancel() {
this.cancelRequested = true;
}
@Override
public int getProgress() {
if (indicesToCalculate <= 0) {
return 0;
}
// lolwtfbbqcasting
return (int) Math.floor(((float) indicesCalculated / (float) indicesToCalculate) * 100);
}
@Override
public String getDescription() {
return "Rebuilds index range information.";
}
@Override
public void execute() {
info("Re-calculating index ranges.");
String[] indices = deflector.getAllGraylogIndexNames();
if (indices == null || indices.length == 0) {
info("No indices, nothing to calculate.");
return;
}
indicesToCalculate = indices.length;
Stopwatch sw = Stopwatch.createStarted();
for (String index : indices) {
if (cancelRequested) {
info("Stop requested. Not calculating next index range, not updating ranges.");
sw.stop();
return;
}
try {
final IndexRange indexRange = indexRangeService.calculateRange(index);
indexRangeService.save(indexRange);
LOG.debug("Created ranges for index {}: {}", index, indexRange);
} catch (Exception e) {
LOG.info("Could not calculate range of index [" + index + "]. Skipping.", e);
} finally {
indicesCalculated++;
}
}
info("Done calculating index ranges for " + indices.length + " indices. Took " + sw.stop().elapsed(TimeUnit.MILLISECONDS) + "ms.");
}
protected void info(String what) {
LOG.info(what);
activityWriter.write(new Activity(what, RebuildIndexRangesJob.class));
}
@Override
public boolean providesProgress() {
return true;
}
@Override
public boolean isCancelable() {
return true;
}
@Override
public int maxConcurrency() {
return MAX_CONCURRENCY;
}
@Override
public String getClassName() {
return this.getClass().getCanonicalName();
}
}