Creating a permanent log of messages on the JForex platform at Dukascopy

[Bob Matthews]

Hi

I have an automated strategy running on the JForex platform at Dukascopy

My strategy outputs quite a lot of data..............using myConsole.getOut().println(....);

When I click on my strategy name tag at the bottom of the platform screen I see only a few lines from my strategy output (being the latest output)

What do I need to do, to capture ALL output ?

Bob M

private IConsole myConsole = null;
myConsole = context.getConsole();

[Norm Radder]

What do I need to do, to capture ALL output ?

For example do you mean: write the output to a file?

What package is the IConsole class in?  What methods does it have that might be useful?

[Bob Matthews]

yes - write the output to a file is what I am seeking.

The package:-
public class XXX implements IStrategy {

[Norm Radder]

I was asking what package the IConsole class was in.  What import statement do you use to be able to use the IConsole class?  Were is the class file located?

If you want to write the lines written using the IConsole class's methods, you should read the API doc for that class to see if it has any useful methods for writing those lines to a file.

For example the System.out object in Java SE has methods that allow the code to intercept what is written with calls to System.out.println() so it can be written to a disk file.

[Bob Matthews]

Is the following example what I should be adapting ?

package jforex.logging;

import java.util.Arrays;
import java.util.List;

import com.dukascopy.api.*;
import com.dukascopy.api.IIndicators.AppliedPrice;
import com.dukascopy.api.IIndicators.MaType;
import com.dukascopy.api.util.DateUtils;

/**
 * The following strategy demonstrates how to log the most commonly used 
 * values and arrays of values in in JForex API 
 *
 */
public class LoggingValues implements IStrategy {
    
    private IConsole console;
    private IHistory history;
    private IIndicators indicators;

    @Override
    public void onStart(IContext context) throws JFException {
        console = context.getConsole();
        history = context.getHistory();
        indicators = context.getIndicators();
        
        IBar prevBar = history.getBar(Instrument.EURUSD, Period.TEN_SECS, OfferSide.BID, 1);
        long time = prevBar.getTime();
        
        double max = indicators.max(Instrument.EURUSD, Period.TEN_SECS, OfferSide.BID, AppliedPrice.CLOSE, 20, 1);        
        //log single double value; time value; object (given that it has an overridden toString method)
        console.getOut().format("single-value max indicator result: %.5f previous bar time=%s previous bar=%s", max, DateUtils.format(time), prevBar).println();
        
        //log 2-dimensional array
        double[][] bbands = indicators.bbands(Instrument.EURUSD, Period.TEN_SECS, OfferSide.BID, AppliedPrice.CLOSE, 
                20, 5, 4, MaType.SMA, Filter.NO_FILTER, 5, time, 0);
        print("2-dimensional bbands indicator result array: " + arrayToString(bbands));
        
        //log 1-dimensional array
        double[] maxArr = indicators.max(Instrument.EURUSD, Period.TEN_SECS, OfferSide.BID, AppliedPrice.CLOSE, 
                20, Filter.NO_FILTER, 5, time, 0);
        print("1-dimensional max indicator result array: " + arrayToString(maxArr));
        
        List<IBar> bars = history.getBars(Instrument.EURUSD, Period.TEN_SECS, OfferSide.BID, Filter.NO_FILTER, 5, time, 0);
        //log indexed array of objects, unindexed array of objects, list of objects
        console.getOut().format("previous bars \n as indexed array: %s \n as unindexed array: %s \n as list: %s", 
                arrayToString(bars.toArray()), Arrays.toString(bars.toArray()), bars).println();

        context.stop();
    }
    
    private void print(Object o){
        console.getOut().println(o);
    }
    
    public static String arrayToString(double[] arr) {
        StringBuilder sb = new StringBuilder();
        for (int r = 0; r < arr.length; r++) {
            sb.append(String.format("[%s] %.5f; ",r, arr[r]));
        }
        return sb.toString();
    }

    public static String arrayToString(Object[] arr) {
        StringBuilder sb = new StringBuilder();
        for (int r = 0; r < arr.length; r++) {
            sb.append(String.format("[%s] %s; ",r, arr[r]));
        }
        return sb.toString();
    }

    public static String arrayToString(double[][] arr) {
        StringBuilder sb = new StringBuilder();
        for (int r = 0; r < arr.length; r++) {
            for (int c = 0; c < arr[r].length; c++) {
                sb.append(String.format("[%s][%s] %.5f; ",r, c, arr[r][c]));
            }
            sb.append("; ");
        }
        return sb.toString();
    }

    @Override
    public void onTick(Instrument instrument, ITick tick) throws JFException {}
    @Override
    public void onBar(Instrument instrument, Period period, IBar askBar, IBar bidBar) throws JFException {}
    @Override
    public void onMessage(IMessage message) throws JFException {}
    @Override
    public void onAccount(IAccount account) throws JFException {}
    @Override
    public void onStop() throws JFException {}

}

[Norm Radder]

Sorry, I do not know anything about the classes in the com.dukascopy.api packages.  Is there a website or forum for classses in those packages?

[Ron McLeod]

Docs here: Interface IConsole

[Paul Clapham]

Bob Matthews wrote:When I click on my strategy name tag at the bottom of the platform screen I see only a few lines from my strategy output (being the latest output)

What do I need to do, to capture ALL output ?

So your "strategy name tag" only shows you the last few lines of the output? Sounds like it might be configured to discard old output after some point. You could look at its configuration and see if there's something there which you could do differently.

[Bob Matthews]

Hi Paul

I agree completely
I have posted a query to Dukascopy Support but their response is yet to come
I must say their support is piteful

[Mohammed Al-otaibi]

Norm Radder wrote:

What do I need to do, to capture ALL output ?

For example do you mean: write the output to a file?

What package is the IConsole class in?  What methods does it have that might be useful?

core java solve the problem, by ouputing to excel
also Duca supports this type of process.

I guest Duca anllow max mesaage of 100 only!

I think they have a filed to detmine number of messages!

[Mohammed Al-otaibi]

Bob Matthews wrote:Hi

I have an automated strategy running on the JForex platform at Dukascopy

My strategy outputs quite a lot of data..............using myConsole.getOut().println(....);

When I click on my strategy name tag at the bottom of the platform screen I see only a few lines from my strategy output (being the latest output)

What do I need to do, to capture ALL output ?

Bob M

private IConsole myConsole = null;
myConsole = context.getConsole();

void setMaxMessages(int maxNumber)
Sets the maximum number of messages. Unrestricted by default.
Parameters:
maxNumber - maximum number of messages in Messages table. Passing -1 makes it unrestricted.