/**
* This file is part of Graylog2.
*
* Graylog2 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.
*
* Graylog2 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 Graylog2. If not, see <http://www.gnu.org/licenses/>.
*/
package org.graylog2.indexer.rotation;
import com.google.inject.Inject;
import org.graylog2.Configuration;
import org.graylog2.indexer.indices.IndexStatistics;
import org.graylog2.indexer.indices.Indices;
import org.graylog2.plugin.indexer.rotation.RotationStrategy;
import javax.annotation.Nullable;
import javax.inject.Singleton;
import java.text.MessageFormat;
@Singleton
public class SizeBasedRotationStrategy implements RotationStrategy {
private final Indices indices;
private final long maxSize;
@Inject
public SizeBasedRotationStrategy(Configuration configuration, Indices indices) {
this.indices = indices;
maxSize = configuration.getElasticSearchMaxSizePerIndex();
}
@Nullable
@Override
public Result shouldRotate(final String index) {
final IndexStatistics indexStats = indices.getIndexStats(index);
if (indexStats == null) {
return null;
}
final long sizeInBytes = indexStats.getPrimaries().store.getSizeInBytes();
final boolean shouldRotate = sizeInBytes > maxSize;
return new Result() {
public final MessageFormat ROTATE = new MessageFormat("Storage size for index <{0}> is {1} bytes, exceeding the maximum of {2} bytes. Rotating index.");
public final MessageFormat NOT_ROTATE = new MessageFormat("Storage size for index <{0}> is {1} bytes, below the maximum of {2} bytes. Not doing anything.");
@Override
public String getDescription() {
MessageFormat format = shouldRotate() ? ROTATE : NOT_ROTATE;
return format.format(new Object[] {
index,
sizeInBytes,
maxSize
});
}
@Override
public boolean shouldRotate() {
return shouldRotate;
}
};
}
}