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DetailedExecutionMonitor.java
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DetailedExecutionMonitor.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.unsafe.impl.batchimport.staging;
import java.io.PrintStream;
import org.neo4j.unsafe.impl.batchimport.stats.DetailLevel;
import org.neo4j.unsafe.impl.batchimport.stats.Keys;
import org.neo4j.unsafe.impl.batchimport.stats.StepStats;
import static java.lang.String.format;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.neo4j.helpers.Format.duration;
/**
* An {@link ExecutionMonitor} that prints very detailed information about each {@link Stage} and the
* {@link Step steps} therein.
*/
public class DetailedExecutionMonitor extends ExecutionMonitor.Adapter
{
private final PrintStream out;
public DetailedExecutionMonitor( PrintStream out )
{
this( out, 5 );
}
public DetailedExecutionMonitor( PrintStream out, long intervalSeconds )
{
super( intervalSeconds, SECONDS );
this.out = out;
}
@Override
public void start( StageExecution execution )
{
StringBuilder names = new StringBuilder();
names.append( names.length() > 0 ? ", " : "" ).append( execution.getStageName() );
out.println( format( "%n>>>>> EXECUTING STAGE(s) %s <<<<<%n", names ) );
}
@Override
public void end( StageExecution execution, long totalTimeMillis )
{
out.println( "Stage total time " + duration( totalTimeMillis ) );
}
@Override
public void check( StageExecution execution )
{
Step<?> bottleNeck = execution.stepsOrderedBy( Keys.avg_processing_time, false ).iterator().next().first();
StringBuilder builder = new StringBuilder();
int i = 0;
for ( Step<?> step : execution.steps() )
{
StepStats stats = step.stats();
builder.append( i > 0 ? format( "%n " ) : "--" )
.append( stats.toString( DetailLevel.BASIC ) )
.append( step == bottleNeck ? " <== BOTTLE NECK" : "" );
i++;
}
String toPrint = builder.toString();
printAndBackUpAgain( toPrint );
}
private void printAndBackUpAgain( String toPrint )
{
out.println( toPrint );
}
}