[Tutor] Checking for file completion.

[Dave Angel]

On 02/21/2012 01:10 PM, Tony Pelletier wrote:
> Hi,
>
> I'm struggling with what I think seems to be a problem.  I've created a
> program that does numerous SOAP calls.  In short, I create a report on a
> report server, pull that file down then parse that file that's been written
> locally for data to make more SOAP calls.  My problem is I'm grabbing the
> filename then losing it somewhere along the way.  The only thing I can
> think of is that it's still open/being written and causing me a problem.
>
> Main starts like such.
>
> def main():
> service = Service()
> cleanup()
> reportId = createReport(service)
> #time.sleep(3)
> filename = getReport(service,reportId)
> getEventAttachments(service, filename)
>
> Here are the results from a test run.
>
> Deleting "files" directory...
> "files" directory successfully created...
> Report in Processing state...
> WeeklyDeliveriesReport_2012-02-21.csv
> WeeklyDeliveriesReport_2012-02-21.csv report succesfully written out...
> None
> File still being written out...
>
>
> getReport() returns a filename and you actually see it twice up in the
> results.
>
> def getReport(service, reportId):
> reportIds = service.client.factory.create('ArrayOfstring')
> reportIds.string.append(reportId)
>
> try:
> result = service.client.service.ReportQueryById(reportIds, 'True')
> if result.Report[0].ReportStatus == 'Processing':
> print 'Report in Processing state...'
> time.sleep(3)
> getReport(service,reportId)
>
> else:
>
> filename =  result.Report[0].ReportFileArgs.ReportFileArg[0].UserFileName
> print filename
> encodedfile = result.Report[0].ReportFileArgs.ReportFileArg[0].EncodedValue
>
> encodedstring = encodedfile.encode('utf-8')
> str_list = []
> for line in encodedstring:
> line = line.rstrip()
> str_list.append(line)
> string = ''.join(str_list)
> data = base64.b64decode(string)
> outfile = open(filename, 'w')
> outfile.write(data)
> outfile.close()
> shutil.copyfile(filename, os.path.join('files', filename))
> print filename + ' report succesfully written out...'
> logging.info(filename + ' report succesfully written out...')
> return filename
> except suds.WebFault as e:
> print e.fault.detail
>
> then from main, I'm using filename to then make the call to
> getEventAttachments and passing in filename.  The None you see is a result
> of my "print filename" statement.
>
> Now, if I uncomment that time.sleep(3), it runs flawlessly which I think
> tells me that the file is still being written to.  I *think*...
>
> Two questions.
> 1.  Is that not it and if so, am I missing something obvious?
> 2.  If it is it, is there a way to check to see if the file I'm trying to
> read from is done being written to?
>
> Thanks
> Tony
>

Please post your message again, as a text message rather than an html 
one.  Reading non-trivial python code that's lost all its indentation is 
impossible.  You've done it before, but that case was simple enough to 
not matter much.



-- 

DaveA