Re: [PATCH v5 3/4] hmp: Use QMP query-netdev in hmp_info_network

[Jason Wang <jasowang@redhat.com>]

----- Original Message -----
> Jason Wang <jasowang@redhat.com> writes:
> 
> [...]
> > One more stupid question, instead of generating the string via hard
> > codes, is there any method (dict?) to iterate all the key/values
> > automatically?
> 
> QAPI visitors.
> 
> The lazy way: use the QObject output visitor to convert the QAPI type
> (here: NetdevInfo) to QObject, then qobject_to_json() to convert to
> JSON text.
> 
> If you don't want JSON, replace qobject_to_json().  Perhaps you can
> create something that's generally useful for HMP, not just "info
> network".  I'd pick keyval_parse() syntax.
> 
> The detour through QObject creates and destroys a rather fat temporary
> data structure.  Tolerable when the amount of data is small.  An output
> visitor that directly creates the string is more efficient.  Takes a bit
> more code, though.  I intend to post one for JSON, to reduce QMP's
> malloc gluttony.
> 

Thanks a lot for the answer.

Alexey, let's try what Markus suggested here.