QPID-4533: Modified perftests to support writing results to a database, and enhanced visualisation-jfc to allow it to read these results.

Previously only CSV output/input was supported by these modules respectively.
Also modified files in perftests/etc/ to allow convenient running of perftests.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1440312 13f79535-47bb-0310-9956-ffa450edef68

9 files changed, 211 insertions, 51 deletions

diff --git a/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/ChartingUtil.java b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/ChartingUtil.java
index a329f33b00..e1403be397 100644
--- a/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/ChartingUtil.java
+++ b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/ChartingUtil.java
@@ -30,7 +30,7 @@ import org.apache.qpid.disttest.charting.chartbuilder.ChartBuilder;
 import org.apache.qpid.disttest.charting.chartbuilder.ChartBuilderFactory;
 import org.apache.qpid.disttest.charting.definition.ChartingDefinition;
 import org.apache.qpid.disttest.charting.definition.ChartingDefinitionCreator;
-import org.apache.qpid.disttest.charting.seriesbuilder.JdbcCsvSeriesBuilder;
+import org.apache.qpid.disttest.charting.seriesbuilder.JdbcSeriesBuilder;
 import org.apache.qpid.disttest.charting.seriesbuilder.SeriesBuilder;
 import org.apache.qpid.disttest.charting.writer.ChartWriter;
 import org.jfree.chart.JFreeChart;
@@ -44,28 +44,46 @@ import org.slf4j.LoggerFactory;
  * The following arguments are understood:
  * </p>
  * <ol>
- *  <li>chart-defs=<i>directory contain chartdef file(s)</i></li>
- *  <li>output-dir=<i>directory in which to produce the PNGs</i></li>
+ *  <li>{@link #OUTPUT_DIR_PROP}</li>
+ *  <li>{@link #CHART_DEFINITIONS_PROP}</li>
+ *  <li>{@link #SUMMARY_TITLE_PROP}</li>
+ *  <li>{@link #JDBC_DRIVER_NAME_PROP}</li>
+ *  <li>{@link #JDBC_URL_PROP}</li>
  * </ol>
+ * Default values are indicated by the similarly named constants in this class.
  */
 public class ChartingUtil
 {
     private static final Logger LOGGER = LoggerFactory.getLogger(ChartingUtil.class);
 
+    /** directory in which to produce the PNGs */
     public static final String OUTPUT_DIR_PROP = "outputdir";
     public static final String OUTPUT_DIR_DEFAULT = ".";
 
+    /** the path to the directory containing the chart definition files */
     public static final String CHART_DEFINITIONS_PROP = "chart-defs";
     public static final String CHART_DEFINITIONS_DEFAULT = ".";
 
     public static final String SUMMARY_TITLE_PROP = "summary-title";
     public static final String SUMMARY_TITLE_DEFAULT = "Performance Charts";
 
+    /** the class name of the JDBC driver to use for reading the chart data */
+    public static final String JDBC_DRIVER_NAME_PROP = "jdbcDriverClass";
+    public static final String JDBC_DRIVER_NAME_DEFAULT = JdbcSeriesBuilder.DEFAULT_JDBC_DRIVER_NAME;
+
+    /** the JDBC URL of the data to be charted */
+    public static final String JDBC_URL_PROP = "jdbcUrl";
+    public static final String JDBC_URL_DEFAULT = JdbcSeriesBuilder.DEFAULT_JDBC_URL;
+
+
     private Map<String,String> _cliOptions = new HashMap<String, String>();
+
     {
         _cliOptions.put(OUTPUT_DIR_PROP, OUTPUT_DIR_DEFAULT);
         _cliOptions.put(CHART_DEFINITIONS_PROP, CHART_DEFINITIONS_DEFAULT);
         _cliOptions.put(SUMMARY_TITLE_PROP, SUMMARY_TITLE_DEFAULT);
+        _cliOptions.put(JDBC_DRIVER_NAME_PROP, JDBC_DRIVER_NAME_DEFAULT);
+        _cliOptions.put(JDBC_URL_PROP, JDBC_URL_DEFAULT);
     }
 
     public static void main(String[] args) throws Exception
@@ -86,21 +104,20 @@ public class ChartingUtil
 
     private void produceAllCharts()
     {
-        final String chartingDefsDir = _cliOptions.get(CHART_DEFINITIONS_PROP);
-        final File chartDirectory = new File(_cliOptions.get(OUTPUT_DIR_PROP));
-        LOGGER.info("Chart chartdef directory/file: {} output directory : {}", chartingDefsDir, chartDirectory);
-
-        List<ChartingDefinition> definitions  = loadChartDefinitions(chartingDefsDir);
-
-        LOGGER.info("There are {} chart(s) to produce", definitions.size());
 
         final ChartWriter writer = new ChartWriter();
-        writer.setOutputDirectory(chartDirectory);
+        writer.setOutputDirectory(new File(_cliOptions.get(OUTPUT_DIR_PROP)));
+
+        SeriesBuilder seriesBuilder = new JdbcSeriesBuilder(
+                _cliOptions.get(JDBC_DRIVER_NAME_PROP),
+                _cliOptions.get(JDBC_URL_PROP));
 
-        final SeriesBuilder seriesBuilder = new JdbcCsvSeriesBuilder();
-        for (ChartingDefinition chartingDefinition : definitions)
+        for (ChartingDefinition chartingDefinition : loadChartDefinitions())
         {
-            ChartBuilder chartBuilder = ChartBuilderFactory.createChartBuilder(chartingDefinition.getChartType(), seriesBuilder);
+            ChartBuilder chartBuilder = ChartBuilderFactory.createChartBuilder(
+                    chartingDefinition.getChartType(),
+                    seriesBuilder);
+
             JFreeChart chart = chartBuilder.buildChart(chartingDefinition);
             writer.writeChartToFileSystem(chart, chartingDefinition);
         }
@@ -109,6 +126,18 @@ public class ChartingUtil
         writer.writeHtmlSummaryToFileSystem(summaryChartTitle);
     }
 
+    private List<ChartingDefinition> loadChartDefinitions()
+    {
+        final String chartingDefsDir = _cliOptions.get(CHART_DEFINITIONS_PROP);
+
+        LOGGER.info("Chart chartdef directory/file: {}", chartingDefsDir);
+
+        List<ChartingDefinition> definitions  = loadChartDefinitions(chartingDefsDir);
+
+        LOGGER.info("There are {} chart(s) to produce", definitions.size());
+        return definitions;
+    }
+
     private List<ChartingDefinition> loadChartDefinitions(String chartingDefsDir)
     {
         ChartingDefinitionCreator chartingDefinitionLoader = new ChartingDefinitionCreator();
diff --git a/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/chartbuilder/CategoryDataSetBasedChartBuilder.java b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/chartbuilder/CategoryDataSetBasedChartBuilder.java
index ba027d9d93..ffa85d5c50 100644
--- a/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/chartbuilder/CategoryDataSetBasedChartBuilder.java
+++ b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/chartbuilder/CategoryDataSetBasedChartBuilder.java
@@ -27,6 +27,7 @@ import org.apache.qpid.disttest.charting.definition.ChartingDefinition;
 import org.apache.qpid.disttest.charting.definition.SeriesDefinition;
 import org.apache.qpid.disttest.charting.seriesbuilder.SeriesBuilderCallback;
 import org.apache.qpid.disttest.charting.seriesbuilder.SeriesBuilder;
+import org.apache.qpid.disttest.charting.seriesbuilder.SeriesRow;
 import org.jfree.chart.JFreeChart;
 import org.jfree.chart.axis.CategoryLabelPositions;
 import org.jfree.data.category.DefaultCategoryDataset;
@@ -52,11 +53,11 @@ public abstract class CategoryDataSetBasedChartBuilder extends BaseChartBuilder
         _seriesBuilder.setSeriesBuilderCallback(new SeriesBuilderCallback()
         {
             @Override
-            public void addDataPointToSeries(SeriesDefinition seriesDefinition, Object[] row)
+            public void addDataPointToSeries(SeriesDefinition seriesDefinition, SeriesRow row)
             {
-                String x = String.valueOf(row[0]);
-                double y = Double.parseDouble(row[1].toString());
-                dataset.addValue( y, seriesDefinition.getSeriesLegend(), x);
+                String x = row.dimensionAsString(0);
+                double y = row.dimensionAsDouble(1);
+                dataset.addValue(y, seriesDefinition.getSeriesLegend(), x);
             }
 
             @Override
@@ -71,6 +72,12 @@ public abstract class CategoryDataSetBasedChartBuilder extends BaseChartBuilder
                 // unused
             }
 
+            @Override
+            public int getNumberOfDimensions()
+            {
+                return 2;
+            }
+
         });
 
         _seriesBuilder.build(chartingDefinition.getSeries());
diff --git a/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/chartbuilder/StatisticalBarCharBuilder.java b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/chartbuilder/StatisticalBarCharBuilder.java
index 1669ee1bb2..61acc8cfdf 100644
--- a/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/chartbuilder/StatisticalBarCharBuilder.java
+++ b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/chartbuilder/StatisticalBarCharBuilder.java
@@ -28,6 +28,7 @@ import org.apache.qpid.disttest.charting.definition.ChartingDefinition;
 import org.apache.qpid.disttest.charting.definition.SeriesDefinition;
 import org.apache.qpid.disttest.charting.seriesbuilder.SeriesBuilder;
 import org.apache.qpid.disttest.charting.seriesbuilder.SeriesBuilderCallback;
+import org.apache.qpid.disttest.charting.seriesbuilder.SeriesRow;
 import org.jfree.chart.JFreeChart;
 import org.jfree.chart.axis.CategoryAxis;
 import org.jfree.chart.axis.CategoryLabelPositions;
@@ -62,11 +63,11 @@ public class StatisticalBarCharBuilder extends BaseChartBuilder
         _seriesBuilder.setSeriesBuilderCallback(new SeriesBuilderCallback()
         {
             @Override
-            public void addDataPointToSeries(SeriesDefinition seriesDefinition, Object[] row)
+            public void addDataPointToSeries(SeriesDefinition seriesDefinition, SeriesRow row)
             {
-                String x = String.valueOf(row[0]);
-                double mean = Double.parseDouble(row[1].toString());
-                double stdDev = Double.parseDouble(row[2].toString());
+                String x = row.dimensionAsString(0);
+                double mean = row.dimensionAsDouble(1);
+                double stdDev = row.dimensionAsDouble(2);
                 dataset.add(mean, stdDev, seriesDefinition.getSeriesLegend(), x);
             }
 
@@ -82,6 +83,12 @@ public class StatisticalBarCharBuilder extends BaseChartBuilder
                 // unused
             }
 
+            @Override
+            public int getNumberOfDimensions()
+            {
+                return 3;
+            }
+
         });
 
         _seriesBuilder.build(chartingDefinition.getSeries());
diff --git a/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/chartbuilder/XYDataSetBasedChartBuilder.java b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/chartbuilder/XYDataSetBasedChartBuilder.java
index 168794be50..46b6ac6fab 100644
--- a/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/chartbuilder/XYDataSetBasedChartBuilder.java
+++ b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/chartbuilder/XYDataSetBasedChartBuilder.java
@@ -29,6 +29,7 @@ import org.apache.qpid.disttest.charting.definition.ChartingDefinition;
 import org.apache.qpid.disttest.charting.definition.SeriesDefinition;
 import org.apache.qpid.disttest.charting.seriesbuilder.SeriesBuilderCallback;
 import org.apache.qpid.disttest.charting.seriesbuilder.SeriesBuilder;
+import org.apache.qpid.disttest.charting.seriesbuilder.SeriesRow;
 import org.jfree.chart.JFreeChart;
 import org.jfree.data.xy.DefaultXYDataset;
 
@@ -61,11 +62,10 @@ public abstract class XYDataSetBasedChartBuilder extends BaseChartBuilder
             }
 
             @Override
-            public void addDataPointToSeries(SeriesDefinition seriesDefinition,
-                    Object[] row)
+            public void addDataPointToSeries(SeriesDefinition seriesDefinition, SeriesRow row)
             {
-                double x = Double.parseDouble(row[0].toString());
-                double y = Double.parseDouble(row[1].toString());
+                double x = row.dimensionAsDouble(0);
+                double y = row.dimensionAsDouble(1);
                 _xyPairs.add(new Double[] {x, y});
             }
 
@@ -77,6 +77,12 @@ public abstract class XYDataSetBasedChartBuilder extends BaseChartBuilder
                 dataset.addSeries(seriesDefinition.getSeriesLegend(), seriesData);
             }
 
+            @Override
+            public int getNumberOfDimensions()
+            {
+                return 2;
+            }
+
             private double[][] listToSeriesDataArray()
             {
                 double[][] seriesData = new double[2][_xyPairs.size()];
diff --git a/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/seriesbuilder/JdbcCsvSeriesBuilder.java b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/seriesbuilder/JdbcSeriesBuilder.java
index a9adce0afc..2cd8d9951f 100644
--- a/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/seriesbuilder/JdbcCsvSeriesBuilder.java
+++ b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/seriesbuilder/JdbcSeriesBuilder.java
@@ -19,7 +19,6 @@
  */
 package org.apache.qpid.disttest.charting.seriesbuilder;
 
-import java.io.File;
 import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.ResultSet;
@@ -28,19 +27,35 @@ import java.sql.Statement;
 import java.util.Iterator;
 import java.util.List;
 
+import org.apache.commons.lang.builder.ToStringBuilder;
+import org.apache.commons.lang.builder.ToStringStyle;
 import org.apache.qpid.disttest.charting.ChartingException;
 import org.apache.qpid.disttest.charting.definition.SeriesDefinition;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
-public class JdbcCsvSeriesBuilder implements SeriesBuilder
+/**
+ * A {@link SeriesBuilder} that uses JDBC to read series data
+ */
+public class JdbcSeriesBuilder implements SeriesBuilder
 {
+    private static final Logger LOGGER = LoggerFactory.getLogger(JdbcSeriesBuilder.class);
 
-    static
-    {
-        registerCsvDriver();
-    }
+    public static final String DEFAULT_JDBC_DRIVER_NAME = "org.relique.jdbc.csv.CsvDriver";
+
+    /** the dot at the end denotes the current directory */
+    public static final String DEFAULT_JDBC_URL = "jdbc:relique:csv:.";
 
+    private final String _jdbcUrl;
     private SeriesBuilderCallback _callback;
 
+    public JdbcSeriesBuilder(String jdbcDriverClass, String jdbcUrl)
+    {
+        registerDriver(jdbcDriverClass);
+        _jdbcUrl = jdbcUrl;
+        LOGGER.info("Created: " + this);
+    }
+
     @Override
     public void setSeriesBuilderCallback(SeriesBuilderCallback callback)
     {
@@ -63,9 +78,7 @@ public class JdbcCsvSeriesBuilder implements SeriesBuilder
         Statement stmt = null;
         try
         {
-            File seriesDir = getValidatedSeriesDirectory(seriesDefinition);
-
-            conn = DriverManager.getConnection("jdbc:relique:csv:" + seriesDir.getAbsolutePath());
+            conn = DriverManager.getConnection(_jdbcUrl);
 
             final String seriesStatement = seriesDefinition.getSeriesStatement();
 
@@ -81,7 +94,8 @@ public class JdbcCsvSeriesBuilder implements SeriesBuilder
                     row[i] = results.getObject(i+1);
                 }
 
-                _callback.addDataPointToSeries(seriesDefinition, row);
+                SeriesRow seriesRow = SeriesRow.createValidSeriesRow(_callback.getNumberOfDimensions(), row);
+                _callback.addDataPointToSeries(seriesDefinition, seriesRow);
             }
             _callback.endSeries(seriesDefinition);
         }
@@ -116,26 +130,22 @@ public class JdbcCsvSeriesBuilder implements SeriesBuilder
         }
     }
 
-    private File getValidatedSeriesDirectory(SeriesDefinition series)
-    {
-        File seriesDir = new File(series.getSeriesDirectory());
-        if (!seriesDir.isDirectory())
-        {
-            throw new ChartingException("seriesDirectory must be a directory : " + seriesDir);
-        }
-        return seriesDir;
-    }
-
-    private static void registerCsvDriver() throws ExceptionInInitializerError
+    private void registerDriver(String driverClassName) throws ExceptionInInitializerError
     {
         try
         {
-            Class.forName("org.relique.jdbc.csv.CsvDriver");
+            Class.forName(driverClassName);
+            LOGGER.info("Loaded JDBC driver class " + driverClassName);
         }
         catch (ClassNotFoundException e)
         {
-            throw new RuntimeException("Could not load CSV/JDBC driver", e);
+            throw new RuntimeException("Could not load JDBC driver " + driverClassName, e);
         }
     }
 
+    @Override
+    public String toString()
+    {
+        return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE).append("jdbcUrl", _jdbcUrl).toString();
+    }
 }
diff --git a/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/seriesbuilder/SeriesBuilder.java b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/seriesbuilder/SeriesBuilder.java
index 86e471efaf..0dfba304a9 100644
--- a/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/seriesbuilder/SeriesBuilder.java
+++ b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/seriesbuilder/SeriesBuilder.java
@@ -25,8 +25,15 @@ import org.apache.qpid.disttest.charting.definition.SeriesDefinition;
 
 public interface SeriesBuilder
 {
+    /**
+     * Uses the supplied {@link SeriesDefinition}s to read the series data
+     * and pass it to the callback set up in {@link #setSeriesBuilderCallback(SeriesBuilderCallback)}.
+     */
     void build(List<SeriesDefinition> seriesDefinitions);
 
+    /**
+     * Stores the supplied callback so it can be used in {@link #build(List)}.
+     */
     void setSeriesBuilderCallback(SeriesBuilderCallback seriesBuilderCallback);
 
 }
\ No newline at end of file
diff --git a/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/seriesbuilder/SeriesBuilderCallback.java b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/seriesbuilder/SeriesBuilderCallback.java
index 7e23953fdb..c9c35d26b4 100644
--- a/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/seriesbuilder/SeriesBuilderCallback.java
+++ b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/seriesbuilder/SeriesBuilderCallback.java
@@ -24,7 +24,8 @@ import org.apache.qpid.disttest.charting.definition.SeriesDefinition;
 public interface SeriesBuilderCallback
 {
     public void beginSeries(SeriesDefinition seriesDefinition);
-    public void addDataPointToSeries(SeriesDefinition seriesDefinition, Object[] row);
-    public void endSeries(SeriesDefinition seriesDefinition);
 
+    public int getNumberOfDimensions();
+    public void addDataPointToSeries(SeriesDefinition seriesDefinition, SeriesRow row);
+    public void endSeries(SeriesDefinition seriesDefinition);
 }
diff --git a/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/seriesbuilder/SeriesRow.java b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/seriesbuilder/SeriesRow.java
new file mode 100644
index 0000000000..6c87b88c45
--- /dev/null
+++ b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/seriesbuilder/SeriesRow.java
@@ -0,0 +1,92 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.qpid.disttest.charting.seriesbuilder;
+
+import java.util.Arrays;
+
+import org.apache.commons.lang.builder.EqualsBuilder;
+import org.apache.commons.lang.builder.HashCodeBuilder;
+
+/**
+ * A data point in a chart. Thinly wraps an array to provide a convenient place to validate the number of dimensions,
+ * and to access dimensions in a typesafe manner.
+ */
+public class SeriesRow
+{
+    private final Object[] _dimensions;
+
+    public static SeriesRow createValidSeriesRow(int expectedNumberOfDimensions, Object[] dimensions)
+    {
+        int actualNumberOfDimensions = dimensions.length;
+        if(expectedNumberOfDimensions != actualNumberOfDimensions)
+        {
+            throw new IllegalArgumentException("Expected " + expectedNumberOfDimensions
+                    + " dimensions but found " + actualNumberOfDimensions
+                    + " in: " + Arrays.asList(dimensions));
+        }
+        return new SeriesRow(dimensions);
+    }
+
+    public SeriesRow(Object... dimensions)
+    {
+        _dimensions = dimensions;
+    }
+
+    public Object dimension(int dimension)
+    {
+        return _dimensions[dimension];
+    }
+
+    public String dimensionAsString(int dimension)
+    {
+        return String.valueOf(dimension(dimension));
+    }
+
+    public double dimensionAsDouble(int dimension)
+    {
+        return Double.parseDouble(dimensionAsString(dimension));
+    }
+
+    @Override
+    public int hashCode()
+    {
+        return new HashCodeBuilder().append(_dimensions).toHashCode();
+    }
+
+    @Override
+    public boolean equals(Object obj)
+    {
+        if (obj == null)
+        {
+            return false;
+        }
+        if (obj == this)
+        {
+            return true;
+        }
+        if (obj.getClass() != getClass())
+        {
+            return false;
+        }
+        SeriesRow rhs = (SeriesRow) obj;
+        return new EqualsBuilder().append(_dimensions, rhs._dimensions).isEquals();
+    }
+
+
+}
\ No newline at end of file
diff --git a/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/writer/ChartWriter.java b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/writer/ChartWriter.java
index 888d7dc3d7..341f01ccd1 100644
--- a/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/writer/ChartWriter.java
+++ b/qpid/java/perftests/visualisation-jfc/src/main/java/org/apache/qpid/disttest/charting/writer/ChartWriter.java
@@ -153,5 +153,6 @@ public class ChartWriter
     public void setOutputDirectory(final File chartDirectory)
     {
         _chartDirectory = chartDirectory;
+        LOGGER.info("Set chart directory: {}", chartDirectory);
     }
 }