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BoltMessageLogging.java
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BoltMessageLogging.java
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/*
* Copyright (c) 2002-2017 "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.bolt.logging;
import io.netty.channel.Channel;
import java.io.File;
import java.time.ZoneId;
import java.util.concurrent.Executor;
import org.neo4j.graphdb.factory.GraphDatabaseSettings;
import org.neo4j.io.fs.FileSystemAbstraction;
import org.neo4j.kernel.configuration.Config;
import org.neo4j.logging.Log;
import org.neo4j.scheduler.JobScheduler;
public class BoltMessageLogging
{
private final BoltMessageLog boltMessageLog;
private BoltMessageLogging( BoltMessageLog boltMessageLog )
{
this.boltMessageLog = boltMessageLog;
}
public static BoltMessageLogging create( FileSystemAbstraction fs, JobScheduler scheduler, Config config, Log log )
{
return new BoltMessageLogging( createBoltMessageLog( fs, scheduler, config, log ) );
}
public static BoltMessageLogging none()
{
return new BoltMessageLogging( null );
}
public BoltMessageLogger newLogger( Channel channel )
{
return boltMessageLog == null ? NullBoltMessageLogger.getInstance()
: new BoltMessageLoggerImpl( boltMessageLog, channel );
}
private static BoltMessageLog createBoltMessageLog( FileSystemAbstraction fs, JobScheduler scheduler,
Config config, Log log )
{
if ( config.get( GraphDatabaseSettings.bolt_logging_enabled ) )
{
try
{
File boltLogFile = config.get( GraphDatabaseSettings.bolt_log_filename );
Executor executor = scheduler.executor( JobScheduler.Groups.boltLogRotation );
ZoneId logTimeZoneId = config.get( GraphDatabaseSettings.log_timezone ).getZoneId();
return new BoltMessageLog( fs, logTimeZoneId, boltLogFile, executor );
}
catch ( Throwable t )
{
log.warn( "Unable to create bolt message log. It is thus disabled", t );
}
}
return null;
}
}