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

[address@hidden]

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



-- 
Andrea Grandi -  Software Engineer / Qt Ambassador / Nokia Developer Champion
website: http://www.andreagrandi.it