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LoggingMonitor.java
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LoggingMonitor.java
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/*
* Copyright (c) 2002-2018 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j 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.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.kernel.api.labelscan;
import org.apache.commons.lang3.exception.ExceptionUtils;
import java.util.StringJoiner;
import org.neo4j.kernel.api.labelscan.LabelScanStore.Monitor;
import org.neo4j.logging.Log;
import static org.neo4j.helpers.Format.duration;
/**
* Logs about important events about {@link LabelScanStore} {@link Monitor}.
*/
public class LoggingMonitor extends Monitor.Adaptor
{
private final Log log;
public LoggingMonitor( Log log )
{
this.log = log;
}
@Override
public void noIndex()
{
log.info( "No label index found, this might just be first use. Preparing to rebuild." );
}
@Override
public void notValidIndex()
{
log.warn( "Label index could not be read. Preparing to rebuild." );
}
@Override
public void rebuilding()
{
log.info( "Rebuilding label index, this may take a while" );
}
@Override
public void rebuilt( long roughNodeCount )
{
log.info( "Label index rebuilt (roughly " + roughNodeCount + " nodes)" );
}
@Override
public void recoveryCleanupRegistered()
{
log.info( "Label index cleanup job registered" );
}
@Override
public void recoveryCleanupStarted()
{
log.info( "Label index cleanup job started" );
}
@Override
public void recoveryCleanupFinished( long numberOfPagesVisited, long numberOfCleanedCrashPointers, long durationMillis )
{
StringJoiner joiner = new StringJoiner( ", ", "Label index cleanup job finished: ", "" );
joiner.add( "Number of pages visited: " + numberOfPagesVisited );
joiner.add( "Number of cleaned crashed pointers: " + numberOfCleanedCrashPointers );
joiner.add( "Time spent: " + duration( durationMillis ) );
log.info( joiner.toString() );
}
@Override
public void recoveryCleanupClosed()
{
log.info( "Label index cleanup job closed" );
}
@Override
public void recoveryCleanupFailed( Throwable throwable )
{
log.info( "Label index cleanup job failed.\nCaused by: " + ExceptionUtils.getStackTrace( throwable ) );
}
}