SimpleDetailedWorkloadMetricsFormatter.java

package com.ldbc.driver.runtime.metrics;

import com.google.common.collect.Lists;
import com.ldbc.driver.temporal.TemporalUtil;

import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.Collections;
import java.util.List;
import java.util.TimeZone;
import java.util.concurrent.TimeUnit;

public class SimpleDetailedWorkloadMetricsFormatter implements WorkloadMetricsFormatter
{
    private static final String DEFAULT_NAME = "<no name given>";
    private static final String DEFAULT_UNIT = "<no unit given>";
    private static final String OFFSET = "    ";
    private static final DecimalFormat INTEGER_FORMATTER = new DecimalFormat( "###,###,###,###" );
    private static final DecimalFormat FLOAT_FORMATTER = new DecimalFormat( "###,###,###,##0.00" );
    private static final TemporalUtil TEMPORAL_UTIL = new TemporalUtil();
    private static final SimpleDateFormat dateTimeFormat = new SimpleDateFormat( "yyyy-MM-dd - HH:mm:ss.SSS" );

    public String format( WorkloadResultsSnapshot workloadResultsSnapshot )
    {
        List<OperationMetricsSnapshot> sortedMetrics = Lists.newArrayList( workloadResultsSnapshot.allMetrics() );
        Collections.sort( sortedMetrics, new OperationTypeMetricsManager.OperationMetricsNameComparator() );

        int padRightDistance = 40;
        StringBuilder sb = new StringBuilder();
        sb.append( "------------------------------------------------------------------------------\n" );
        sb.append( String.format( "%1$-" + padRightDistance + "s", "Operation Count:" ) )
                .append( INTEGER_FORMATTER.format( workloadResultsSnapshot.totalOperationCount() ) ).append( "\n" );
        sb.append( String.format( "%1$-" + padRightDistance + "s", "Duration:" ) )
                .append( TEMPORAL_UTIL.nanoDurationToString( workloadResultsSnapshot.totalRunDurationAsNano() ) )
                .append( "\n" );
        double opsPerNs = (workloadResultsSnapshot.totalOperationCount() /
                           (double) workloadResultsSnapshot.totalRunDurationAsNano());
        double opsPerS = opsPerNs * TimeUnit.SECONDS.toNanos( 1 );
        sb.append( String.format( "%1$-" + padRightDistance + "s", "Throughput:" ) )
                .append( FLOAT_FORMATTER.format( opsPerS ) ).append( " (op/s)\n" );
        sb.append( String.format( "%1$-" + padRightDistance + "s",
                "Start Time (" + TimeZone.getDefault().getDisplayName() + "):" ) )
                .append( dateTimeFormat.format( workloadResultsSnapshot.startTimeAsMilli() ) ).append( "\n" );
        sb.append( String.format( "%1$-" + padRightDistance + "s",
                "Finish Time (" + TimeZone.getDefault().getDisplayName() + "):" ) )
                .append( dateTimeFormat.format( workloadResultsSnapshot.latestFinishTimeAsMilli() ) ).append( "\n" );
        sb.append( "------------------------------------------------------------------------------\n" );
        for ( OperationMetricsSnapshot metric : sortedMetrics )
        {
            sb.append( formatOneMetricRuntime( OFFSET, metric ) );
        }
        sb.append( "------------------------------------------------------------------------------\n" );
        return sb.toString();
    }

    private String formatOneMetricRuntime( String offset, OperationMetricsSnapshot metric )
    {
        int padRightDistance = 20;
        String name = (null == metric.name()) ? DEFAULT_NAME : metric.name();
        String unit = (null == metric.durationUnit()) ? DEFAULT_UNIT : metric.durationUnit().toString();
        StringBuilder sb = new StringBuilder();
        sb.append( offset ).append( String.format( "%s\n", name ) );
        sb.append( offset ).append( offset ).append( String.format( "%1$-" + padRightDistance + "s", "Units:" ) )
                .append( unit ).append( "\n" );
        sb.append( offset ).append( offset ).append( String.format( "%1$-" + padRightDistance + "s", "Count:" ) )
                .append( INTEGER_FORMATTER.format( metric.runTimeMetric().count() ) ).append( "\n" );
        sb.append( offset ).append( offset ).append( String.format( "%1$-" + padRightDistance + "s", "Min:" ) )
                .append( INTEGER_FORMATTER.format( metric.runTimeMetric().min() ) ).append( "\n" );
        sb.append( offset ).append( offset ).append( String.format( "%1$-" + padRightDistance + "s", "Max:" ) )
                .append( INTEGER_FORMATTER.format( metric.runTimeMetric().max() ) ).append( "\n" );
        sb.append( offset ).append( offset ).append( String.format( "%1$-" + padRightDistance + "s", "Mean:" ) )
                .append( FLOAT_FORMATTER.format( metric.runTimeMetric().mean() ) ).append( "\n" );
        sb.append( offset ).append( offset )
                .append( String.format( "%1$-" + padRightDistance + "s", "50th Percentile:" ) )
                .append( INTEGER_FORMATTER.format( metric.runTimeMetric().percentile50() ) ).append( "\n" );
        sb.append( offset ).append( offset )
                .append( String.format( "%1$-" + padRightDistance + "s", "90th Percentile:" ) )
                .append( INTEGER_FORMATTER.format( metric.runTimeMetric().percentile90() ) ).append( "\n" );
        sb.append( offset ).append( offset )
                .append( String.format( "%1$-" + padRightDistance + "s", "95th Percentile:" ) )
                .append( INTEGER_FORMATTER.format( metric.runTimeMetric().percentile95() ) ).append( "\n" );
        sb.append( offset ).append( offset )
                .append( String.format( "%1$-" + padRightDistance + "s", "99th Percentile:" ) )
                .append( INTEGER_FORMATTER.format( metric.runTimeMetric().percentile99() ) ).append( "\n" );
        return sb.toString();
    }
}