Hi everybody,

Would be interesting to know if it's possible to add some user defined information to the reports page after the strategy testing was finished. For example: maximal/minimal price between position open and close times, profit/loss of long and short orders and so on.

Is it possible to implement such things with the API?

The report is just an html file, so you might add content to it in a similar way to this:

package singlejartest;

import com.dukascopy.api.*;
import com.dukascopy.api.system.ISystemListener;
import com.dukascopy.api.system.ITesterClient;
import com.dukascopy.api.system.TesterFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.*;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashSet;
import java.util.Set;
import java.util.TimeZone;
import java.util.concurrent.Future;

/**
 * This small program demonstrates how to initialize Dukascopy tester and start a strategy
 * with a customization of strategy's report
 */
@RequiresFullAccess
public class TesterMainCustomReport {
   private static final Logger LOGGER = LoggerFactory.getLogger(Main.class);

   // url of the DEMO jnlp
   private static String jnlpUrl = "https://www.dukascopy.com/client/demo/jclient/jforex.jnlp";
   // user name
   private static String userName = "USERNAME";
   // password
   private static String password = "PASSWORD";
   
   public static void insertStringInFile(File inFile, int lineno, String lineToBeInserted) throws Exception {
      // temp file
      File outFile = new File("$$$$$$$$.tmp");

      // input
      FileInputStream fis = new FileInputStream(inFile);
      BufferedReader in = new BufferedReader(new InputStreamReader(fis));

      // output
      FileOutputStream fos = new FileOutputStream(outFile);
      PrintWriter out = new PrintWriter(fos);

      String thisLine = "";
      int i = 1;
      while ((thisLine = in.readLine()) != null) {
         if (i == lineno)
            out.println(lineToBeInserted);
         out.println(thisLine);
         i++;
      }
      out.flush();
      out.close();
      in.close();

      inFile.delete();
      outFile.renameTo(inFile);
   }

   public static void main(String[] args) throws Exception {
      // get the instance of the IClient interface
      final ITesterClient client = TesterFactory.getDefaultInstance();
      // set the listener that will receive system events
      client.setSystemListener(new ISystemListener() {
         @Override
         public void onStart(long processId) {
            LOGGER.info("Strategy started: " + processId);
         }

         @Override
         public void onStop(long processId) {
            LOGGER.info("Strategy stopped: " + processId);
            File reportFile = new File("C:\\temp\\report.html");
            try {
               client.createReport(processId, reportFile);
               insertStringInFile(reportFile, 90, "<tr><th>__________INSERTED LINE__________</th><td>1.2345</td></tr>");
            } catch (Exception e) {
               LOGGER.error(e.getMessage(), e);
            }
            if (client.getStartedStrategies().size() == 0) {
               System.exit(0);
            }
         }

         @Override
         public void onConnect() {
            LOGGER.info("Connected");
         }

         @Override
         public void onDisconnect() {
            // tester doesn't disconnect
         }
      });

      LOGGER.info("Connecting...");
      // connect to the server using jnlp, user name and password
      // connection is needed for data downloading
      client.connect(jnlpUrl, userName, password);

      // wait for it to connect
      int i = 10; // wait max ten seconds
      while (i > 0 && !client.isConnected()) {
         Thread.sleep(1000);
         i--;
      }
      if (!client.isConnected()) {
         LOGGER.error("Failed to connect Dukascopy servers");
         System.exit(1);
      }

      // custom historical data
      String dateFromStr = "05/25/2011 00:00:00";
      String dateToStr = "05/26/2011 00:00:00";

      final SimpleDateFormat dateFormat = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss");
      dateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));

      Date dateFrom = dateFormat.parse(dateFromStr);
      Date dateTo = dateFormat.parse(dateToStr);

      client.setDataInterval(Period.THIRTY_MINS, OfferSide.BID, ITesterClient.InterpolationMethod.CLOSE_TICK, dateFrom.getTime(),
            dateTo.getTime());

      // set instruments that will be used in testing
      Set<Instrument> instruments = new HashSet<Instrument>();
      instruments.add(Instrument.EURUSD);
      LOGGER.info("Subscribing instruments...");
      client.setSubscribedInstruments(instruments);
      // setting initial deposit
      client.setInitialDeposit(Instrument.EURUSD.getSecondaryCurrency(), 50000);
      // load data
      LOGGER.info("Downloading data");
      Future<?> future = client.downloadData(null);
      // wait for downloading to complete
      future.get();
      // start the strategy
      LOGGER.info("Starting strategy");

      client.startStrategy(new MA_Play(), new LoadingProgressListener() {

         @Override
         public void dataLoaded(long startTime, long endTime, long currentTime, String information) {
            LOGGER.info(information);
         }

         @Override
         public void loadingFinished(boolean allDataLoaded, long startTime, long endTime, long currentTime) {
         }

         @Override
         public boolean stopJob() {
            return false;
         }
      });
      // now it's running

   }
}

Thanks for example code. But so far I understand I need additional libraries for drawing of charts.

Please elaborate what additional libraries for drawing of charts do you mean.

For example OpenOffice SDK to create spreadsheets programmatically and insert charts or JFreeChart.
So far I know there is no way to draw charts in HTML only by using HTML-tags. You can only insert an image which contains the chart.

You are right, there is no built-in support for such libraries and probably the best you can do is to insert an image in a similar fashion than that of the example above.