Re: [Duplicity-talk] local_path.exists() fails when testing a new backend

[edgar . soldin]

this should be fixed by Mike. 
http://bazaar.launchpad.net/~duplicity-team/duplicity/0.7-series/revision/992

was merged to 0.7 branch 28.June  ..ede

On 10.07.2014 00:33, address@hidden wrote:
> Hi guys,
> 
> sorry if I ask again, but has anyone an idea why that backend call is failing?
> I would really appreciate your help. We are really close to complete
> the backend for Skylable client and this would be an additional
> opportunity also for Duplicity.
> 
> Thank you so much for your help.
> 
> Cheers.
> 
> 
> On 3 July 2014 21:32, address@hidden <address@hidden> wrote:
>> Hi guys,
>>
>> as you probably know I'm working on the Duplicity backend for Skylable
>> service. I'm basing my work on your "devel" branch (0.7.x) and you can
>> find my work in progress here:
>> https://github.com/andreagrandi/duplicity-sx
>>
>> Now, let's go to the issue. It looks like I've problems implementing
>> the _get method of my backend.
>>
>> On high level, this is the error I get when I execute a command like this:
>>
>> PYTHONPATH=. ./bin/duplicity -v9 sx://indian.skylable.com/vol-andy80/ 
>> ./test-bkp
>>
>> output here: http://pastebin.com/JF4LuWXZ
>>
>> Debugging my code with ipdb I can see this:
>>
>>> /home/andrea/Downloads/duplicity/duplicity/backends/sxbackend.py(39)_get()
>>      38         commandline = "sxcp {0} {1}".format(remote_path,
>> local_path.name)
>> ---> 39         self.subprocess_popen(commandline)
>>      40
>>
>> ipdb> n
>>> /home/andrea/Downloads/duplicity/duplicity/backend.py(541)get()
>>     540             self.backend._get(remote_filename, local_path)
>> --> 541             if not local_path.exists():
>>     542                 raise BackendException(_("File %s not found
>> locally after get "
>>
>> ipdb> local_path.exists()
>> ipdb> local_path
>> (() /tmp/duplicity-V8v6rE-tempdir/mktemp-0tsmWi-2 None)
>>
>> as you can see the .exists() method doesn't return anything, while
>> inspecting the object it contains a file that I've verified being
>> existing (the only two things that I don't understand are: is that
>> empty tumple at the beginning ok? It's the None at the end ok?):
>>
>> andrea-Inspiron-660:duplicity andrea [master] $ ls -al
>> /tmp/duplicity-V8v6rE-tempdir/mktemp-0tsmWi-2
>> -rw-rw-r-- 1 andrea andrea 4455795 lug  3 21:20
>> /tmp/duplicity-V8v6rE-tempdir/mktemp-0tsmWi-2
>>
>> The code of course fails because tha exists() fails:
>>
>>> /home/andrea/Downloads/duplicity/duplicity/backend.py(542)get()
>>     541             if not local_path.exists():
>> --> 542                 raise BackendException(_("File %s not found
>> locally after get "
>>     543                                          "from backend") %
>> util.ufn(local_path.name))
>>
>> Now my question is: why the .exists() fails if the path exists? What's
>> wrong with my code?
>>
>> Thank you so much. Cheers.
>>
>> --
>> Andrea Grandi -  Software Engineer / Qt Ambassador / Nokia Developer Champion
>> website: http://www.andreagrandi.it
> 
> 
>