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Subject: RE: file upload (PUT method) progress report
Date: Tue, 11 Nov 2003 08:45:33 -0000
Message-ID: 
 <825BF35A92B3F0479CC164ECBBE9376E0DE64D@kccxoex06.corp.kpmgconsulting.com>
Thread-Topic: file upload (PUT method) progress report
Thread-Index: AcOn5sJ/iEaxYJI6T3OKY4AGqB8QGAAR4Uqw
From: "Kalnichevski, Oleg" <oleg.kalnichevski@bearingpoint.com>
To: "Commons HttpClient Project" <commons-httpclient-dev@jakarta.apache.org>

Yong,
You should be using PostMethod.setRequestBody(InputStream) method to =
provide the request content body (as Mike pointed out) and wrap the =
source InputStream with a FilterInputStream. Exactly what you choose to =
do in the FilterInputStream is up to you. One possibility is to file =
events containing progress details. Here's a code snippet that should =
give you a pointer in that direction. Hope this helps

Oleg


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=3D=3D=3D

import java.util.EventObject;

public class ProgressEvent extends EventObject {

    private int current;   =20
    private int total;   =20
               =20
	public ProgressEvent( Object source, int current, int total ) {
        super( source );
        this.current =3D current;
        this.total =3D total;
	}
   =20
    public int getCurrent()
    {
        return this.current;
    }
   =20
   =20
    public int getTotal()
    {
        return this.total;
    }
   =20
}
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=3D=3D=3D
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import xxx.ProgressEvent;=20
import xxx.ProgressListenerList;=20

public class ProgressInputStream extends FilterInputStream
{
    private ProgressListenerList listeners =3D null;
    private int current;
    private int total;

	public ProgressInputStream( InputStream in, ProgressListenerList =
listeners, int total )
	{
        super( in );
        this.listeners =3D listeners;
        this.current =3D 0;
        this.total =3D total;
	}
       =20
	public int read(byte[] b, int off, int len) throws IOException
	{
		int result =3D super.read(b, off, len);
        if ( result !=3D -1 )
        {
            this.current +=3D result;
            callListeners();           =20
        }
        return result;
	}

	public int read(byte[] b) throws IOException
	{
		int result =3D super.read(b);
        if ( result !=3D -1 )
        {
            this.current +=3D result;
            callListeners();           =20
        }
        return result;
	}

    private void callListeners()
    {
        if ( this.listeners !=3D null )
        {
            this.listeners.callListeners( new ProgressEvent( this, =
this.current, this.total ) );
        }
    }
}
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=3D=3D=3D

import java.util.EventListener;

public interface ProgressListener extends EventListener
{
    public void progressNotification( ProgressEvent event );
}

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=3D=3D=3D

import java.util.Vector;=20

public class ProgressListenerList {

    // I have to use Vector here because of Java 1.1.8 compatibiliy =
requirements
    private Vector v =3D null;


    public ProgressListenerList()
    {
       super();
    }


    public synchronized void addListner( ProgressListener listnener )
    {
        if ( listnener =3D=3D null )
        {
            return;
        }
        if ( this.v =3D=3D null )
        {
            this.v =3D new Vector( 1 );
        }
        int i =3D this.v.indexOf( listnener );
        if ( i =3D=3D -1 )
        {
            this.v.addElement( listnener );
        }      =20
    }


    public synchronized void removeListner( ProgressListener listnener )
    {
        if ( listnener =3D=3D null )
        {
            return;
        }
        if ( this.v =3D=3D null )
        {
            return;
        }
        int i =3D this.v.indexOf( listnener );
        if ( i !=3D -1 )
        {
            this.v.removeElementAt( i );
        }      =20
        if ( this.v.size() =3D=3D 0 )
        {
            this.v =3D null;
        }
    }


    public synchronized void clear()
    {
        if ( this.v !=3D null )
        {
            this.v.removeAllElements();
            this.v =3D null;
        }
    }


    public synchronized void invokeListeners( ProgressEvent event )
    {
        if ( this.v =3D=3D null )
        {
            return;
        }
        for ( int i =3D 0; i < this.v.size(); i++ )
        {
            ( ( ProgressListener )this.v.elementAt( i ) =
).progressNotification( event );
        }
    }

    public synchronized int size()
    {
        if ( this.v =3D=3D null )
        {
            return 0;
        }
        else
        {
            return this.v.size();
        }
    }

}
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=3D=3D=3D

-----Original Message-----
From: Yong Chen [mailto:Yong.Chen@MCDATA.com]
Sent: Tuesday, November 11, 2003 01:03
To: commons-httpclient-dev@jakarta.apache.org
Subject: file upload (PUT method) progress report


Hi,

I'm using putmethod to put (large size) file on server. After calling =
executeMethod(), I want to know the progress or the percentage of file =
uploaded so I can report it to UI.

1. Is there any to do it now?
2. If not, are there any plans for adding it to the future release?

Thanks,
Yong Chen

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