[Twisted-Python] dynamic FTP realm

[Paul Wiseman]

I'm very new to twisted (I've only just started using it, so I apologise if
anything I ask is seemingly obvious!).

I'm looking to try and set up a FTP server which will serve a file
structure and files which don't exists on the server (the file structure
information is stored on cassandra, and the files are on s3). The file
structure and files will also be unique to the user, so different logins
will generate the file structure for that particular user, but I guess I
can adress that later.

firstly is this possible?

I imagine there will be some methods for listing folders, and listing files
that I can override and in there I can make a request to get the list and
return it.

I found this<http://twistedmatrix.com/documents/current/core/examples/ftpserver.py>
example
of a ftp server but I can't seem to find out how I can override or change
FTPRealm to alter how it lists files/folders.

Any advice or pointers to some ftp tutorials would be hugely appreciated,

Many thanks!

Paul
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