/*
* Hibernate Search, full-text search for your domain model
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.search.batchindexing.impl;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicLong;
import org.hibernate.search.batchindexing.MassIndexerProgressMonitor;
import org.hibernate.search.util.logging.impl.Log;
import org.hibernate.search.util.logging.impl.LoggerFactory;
/**
* A very simple implementation of {@code MassIndexerProgressMonitor} which
* uses the logger at INFO level to output indexing speed statistics.
*
* @author Sanne Grinovero
*/
public class SimpleIndexingProgressMonitor implements MassIndexerProgressMonitor {
private static final Log log = LoggerFactory.make();
private final AtomicLong documentsDoneCounter = new AtomicLong();
private final AtomicLong totalCounter = new AtomicLong();
private volatile long startTime;
private final int logAfterNumberOfDocuments;
/**
* Logs progress of indexing job every 50 documents written.
*/
public SimpleIndexingProgressMonitor() {
this( 50 );
}
/**
* Logs progress of indexing job every {@code logAfterNumberOfDocuments}
* documents written.
*
* @param logAfterNumberOfDocuments log each time the specified number of documents has been added
*/
public SimpleIndexingProgressMonitor(int logAfterNumberOfDocuments) {
this.logAfterNumberOfDocuments = logAfterNumberOfDocuments;
}
@Override
public void entitiesLoaded(int size) {
//not used
}
@Override
public void documentsAdded(long increment) {
long current = documentsDoneCounter.addAndGet( increment );
if ( current == increment ) {
startTime = System.nanoTime();
}
if ( current % getStatusMessagePeriod() == 0 ) {
printStatusMessage( startTime, totalCounter.get(), current );
}
}
@Override
public void documentsBuilt(int number) {
//not used
}
@Override
public void addToTotalCount(long count) {
totalCounter.addAndGet( count );
log.indexingEntities( count );
}
@Override
public void indexingCompleted() {
log.indexingEntitiesCompleted( totalCounter.get() );
}
protected int getStatusMessagePeriod() {
return logAfterNumberOfDocuments;
}
protected void printStatusMessage(long startTime, long totalTodoCount, long doneCount) {
long elapsedMs = TimeUnit.NANOSECONDS.toMillis( System.nanoTime() - startTime );
log.indexingDocumentsCompleted( doneCount, elapsedMs );
float estimateSpeed = doneCount * 1000f / elapsedMs;
float estimatePercentileComplete = doneCount * 100f / totalTodoCount;
log.indexingSpeed( estimateSpeed, estimatePercentileComplete );
}
}