Re: [PATCH v2 virt-manager] osdict: handle libosinfo lookup failure

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Cole Robinson <crobinso@xxxxxxxxxx> writes:

> On 03/26/2014 09:41 AM, Giuseppe Scrivano wrote:
>> Cole Robinson <crobinso@xxxxxxxxxx> writes:
>> 
>>> On 03/26/2014 08:51 AM, Giuseppe Scrivano wrote:
>>>> Signed-off-by: Giuseppe Scrivano <gscrivan@xxxxxxxxxx>
>>>> ---
>>>> OK to include this patch into the series?
>>>>
>>>>  virtinst/osdict.py | 7 +++++--
>>>>  1 file changed, 5 insertions(+), 2 deletions(-)
>>>>
>>>> diff --git a/virtinst/osdict.py b/virtinst/osdict.py
>>>> index 13f6670..f37ccab 100644
>>>> --- a/virtinst/osdict.py
>>>> +++ b/virtinst/osdict.py
>>>> @@ -165,9 +165,12 @@ def get_recommended_resources(variant, arch):
>>>>  
>>>>  
>>>>  def lookup_os_by_media(location):
>>>> -    media = libosinfo.Media.create_from_location(location, None)
>>>> +    try:
>>>> +        media = libosinfo.Media.create_from_location(location, None)
>>>> +    except:
>>>> +        return None
>>>
>>> I'd like to see the error here logged, it either shouldn't happen so it will
>>> rarely trigger, or its potentially informative. ACK otherwise
>> 
>> I've preferred to just mute it as the error was that the location could
>> not be opened, and that makes sense when we pass a URL.  Should this be
>> changed?
>> 
>
> It's still informative, for the logs at least. There could be another error
> going on in libosinfo and we would want to track that at least. But we could
> avoid the URL error by not passing a URL location to libosinfo, just skip if
> distroinstaller._is_url is False

ok thanks, I didn't see that function, ok to push this version (and
enable again the exception in osdict.py)?

--- a/virtinst/distroinstaller.py
+++ b/virtinst/distroinstaller.py
@@ -473,6 +474,16 @@ class DistroInstaller(Installer):
 
     def detect_distro(self, guest):
         try:
+            if not _is_url(self.conn, self.location):
+                name = osdict.lookup_os_by_media(self.location)
+                if name:
+                    logging.debug("installer.detect_distro returned=%s", name)
+                    return name
+        except:
+            logging.debug("libosinfo detect failed", exc_info=True)
+
+        try:

Giuseppe

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