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Python tell when an ftp transfer sits on completion

Answer 1

A:

I've never used ftplib, but perhaps you could do:

Get the name and size of the file you want.
Start a new daemonic thread to download the file.
In the main thread, check every few seconds whether the file size on disk equals the target size.
When it does, wait a few seconds to give the connection a chance to close nicely, and then exit the program.

John Fouhy 2009-07-09 22:49:44

Answer 2

A:

I think some debugging could be useful. Could you fold the class below into your code? (I didn't do it myself because I know this version works, and didn't want to risk making an error. You should be able to just put the class at the top of your file and replace the body of the loop with what I've written after #LOOP BODY)

class CounterFile():
    def __init__(self, file, maxsize):
        self.file = file
        self.count = 0
        self.maxsize = maxsize

    def write(self, bytes):
        self.count += len(bytes)
        print "total %d bytes / %d"%(self.count, self.maxsize)
        if self.count == self.maxsize:
            print "   Should be complete"
        self.file.write(bytes)


from ftplib import FTP
ftp = FTP('ftp.gimp.org')
ftp.login('ftp', '[email protected]')
ftp.set_debuglevel(2)

ftp.cwd('/pub/gimp/v2.6/')
fname = 'gimp-2.6.2.tar.bz2'

# LOOP BODY
sz = ftp.size(fname)
if sz is None:
    print "Could not get size!"
    sz = 0
ret_status = ftp.retrbinary('RETR ' + fname, CounterFile(open(fname, 'wb'), sz).write)

thouis 2009-12-21 14:58:02

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Python tell when an ftp transfer sits on completion

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