[Libguestfs] [PATCH] v2v: -o rhv-upload: cancel disk transfer on open failure

[Richard W.M. Jones]

On Thu, Sep 19, 2019 at 12:38:39PM +0200, Pino Toscano wrote:
> Make sure to cancel the trasfer in RHV in case of failure during the
> open/creation of the disk in RHV, so it is automatically removed.
> ---
>  v2v/rhv-upload-plugin.py | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/v2v/rhv-upload-plugin.py b/v2v/rhv-upload-plugin.py
> index 57e90484f..51a7f381a 100644
> --- a/v2v/rhv-upload-plugin.py
> +++ b/v2v/rhv-upload-plugin.py
> @@ -193,12 +193,14 @@ def open(readonly):
>          if transfer.phase != types.ImageTransferPhase.INITIALIZING:
>              break
>          if time.time() > endt:
> +            transfer_service.cancel()
>              raise RuntimeError("timed out waiting for transfer status "
>                                 "!= INITIALIZING")
>  
>      # Now we have permission to start the transfer.
>      if params['rhv_direct']:
>          if transfer.transfer_url is None:
> +            transfer_service.cancel()
>              raise RuntimeError("direct upload to host not supported, "
>                                 "requires ovirt-engine >= 4.2 and only works "
>                                 "when virt-v2v is run within the oVirt/RHV "
> @@ -225,6 +227,7 @@ def open(readonly):
>              destination_url.port,
>          )
>      else:
> +        transfer_service.cancel()
>          raise RuntimeError("unknown URL scheme (%s)" % destination_url.scheme)
>  
>      # The first request is to fetch the features of the server.
> @@ -259,6 +262,7 @@ def open(readonly):
>          pass
>  
>      else:
> +        transfer_service.cancel()
>          raise RuntimeError("could not use OPTIONS request: %d: %s" %
>                             (r.status, r.reason))
>  

I've no problem with the patch so ACK, but is there not a way to
combine all those separate calls into one place somehow?  They all
seem to originate in one method (.open).

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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