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/*
* 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.writer;
import java.io.BufferedOutputStream;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.util.SortedSet;
import java.util.TreeSet;
import org.apache.qpid.disttest.charting.ChartingException;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ChartWriter
{
private static final Logger LOGGER = LoggerFactory.getLogger(ChartWriter.class);
static final String SUMMARY_FILE_NAME = "chart-summary.html";
private File _chartDirectory = new File(".");
private SortedSet<File> _chartFiles = new TreeSet<File>();
public void writeChartToFileSystem(JFreeChart chart, String chartStemName)
{
OutputStream pngOutputStream = null;
try
{
File pngFile = new File(_chartDirectory, chartStemName + ".png");
pngOutputStream = new BufferedOutputStream(new FileOutputStream(pngFile));
ChartUtilities.writeChartAsPNG(pngOutputStream, chart, 600, 400, true, 0);
pngOutputStream.close();
_chartFiles.add(pngFile);
LOGGER.info("Written {} chart", pngFile);
}
catch (IOException e)
{
throw new ChartingException("Failed to create chart", e);
}
finally
{
if (pngOutputStream != null)
{
try
{
pngOutputStream.close();
}
catch (IOException e)
{
throw new ChartingException("Failed to create chart", e);
}
}
}
}
public void writeHtmlSummaryToFileSystem()
{
if(_chartFiles.size() < 2)
{
LOGGER.info("Only " + _chartFiles.size() + " chart image(s) have been written so no HTML summary file will be produced");
return;
}
String htmlHeader =
"<html>\n" +
" <head>\n" +
" <title>Performance Charts</title>\n" +
" </head>\n" +
" <body>\n";
String htmlFooter =
" </body>\n" +
"</html>";
BufferedWriter writer = null;
try
{
File summaryFile = new File(_chartDirectory, SUMMARY_FILE_NAME);
LOGGER.debug("About to produce HTML summary file " + summaryFile.getAbsolutePath() + " from charts " + _chartFiles);
writer = new BufferedWriter(new FileWriter(summaryFile));
writer.write(htmlHeader);
writer.write(" <ul>\n");
for (File chartFile : _chartFiles)
{
writer.write(" <li><a href='#"+ chartFile.getName() +"'>" + chartFile.getName() + "</a></li>\n");
}
writer.write(" </ul>\n");
for (File chartFile : _chartFiles)
{
writer.write(" <a name='" + chartFile.getName() + "'/>\n");
writer.write(" <img src='" + chartFile.getName() + "'/>\n");
}
writer.write(htmlFooter);
writer.close();
}
catch (Exception e)
{
throw new ChartingException("Failed to create HTML summary file", e);
}
finally
{
if(writer != null)
{
try
{
writer.close();
}
catch(IOException e)
{
throw new ChartingException("Failed to create HTML summary file", e);
}
}
}
}
public void setOutputDirectory(final File chartDirectory)
{
_chartDirectory = chartDirectory;
}
}
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