Apache SSHD SFTP file upload question

[Nilesh Apte]

Hi:

I tried Apache FTP server and ftplet (to capture when a file is 
downloaded/uploaded).With ftplet, I can put my file handling logic in 
"onUploadEnd" and need not poll a folder for the file.
Is there anything in Apache SSHD SFTP which will let me do similar ( 
notify on successful file upload)? SFTP too support commands similar to 
ftp, so why don't we have "FTPlet" kind of thing for SFTP?

Thanks,
Nilesh.