[Libguestfs] [PATCH v3] v2v: -o rhv-upload: Use Unix domain socket to access imageio (RHBZ#1588088).

[Richard W.M. Jones]

On Wed, Jun 27, 2018 at 12:37:20PM +0300, Nir Soffer wrote:
> I tested the patch yesterday, and unix socket did not work - silently.
> 
> After changing the code to:
> 
>     try:
>         with builtin_open("/etc/vdsm/vdsm.id") as f:
>             vdsm_id = f.readline().strip()
>     except Exception as e:
>         debug("cannot read host hardware id: %s" % e)
>         return None
> 
> Then I got this message:
> 
>     cannot read host hardware id: name 'builtin_open' is not defined
> 
> We are paying the price of python :-)

Ah, that's a typo.

The Python 3 version is meant to use builtins.open.

However confusingly I was testing the Python 2 version which has
a RHEL-only patch that does:

  -import builtins
  +from __builtin__ import open as builtin_open 

  (https://github.com/libguestfs/libguestfs/commit/e5826e63b53a0aadc8a8d5261ebfca843d0e4068)

Because I wasn't expecting the Python 3 version to work, I didn't
notice this error.

And yes you're right, Strong Typing FTW.  It's why we use OCaml where
possible.

I will fix this.  Were there any other problems?

Rich.

-- 
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