Dear Laxman,
a proposal :
with SFG (in the dashboard), you can define a service configuration of "File system"'s type to collect your file.
This service, on file detection in this directory, should be configured to launch a BP for this file.
This BP would have to push the file in a Producer's mailbox.
Then you will work within the SFG's framework of Producer and Consumer Partner.
Best regard.
V Lahousse
------------------------------
Vincent Lahousse
------------------------------